CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Crosby J-Series pressure relief valves are a robust and proven technology providing reliable overpressure protection
in applications including air, gas, steam, vapor, liquid and two-phase media.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
GENERAL APPLICATION
TECHNICAL DATA
The J-Series Pressure Relief Valve provides
overpressure protection from very basic to
the most demanding applications. Backed by
over 140 years of engineering and application
experience, its versatile and rugged design
make it a proven solution for oil and gas, process
and power industry overpressure protection.
Sizes:
Orifices:
Inlet ratings:
Temperature range:
Set pressures
JOS-E:
JLTJOS-E:
JBS-E/JBSBP-E:
JLTJBS-E/JLTJBSBP-E:
JDS-E:
JLTJDS-E:
Code:
Emerson.com
1" D 2" to 12" W 16"
25 D 50 to 200 T 250
(EN Type)
0.110 to 60.75 in2
(71 to 39,193 mm2)
ANSI Classes 150,
300, 600, 900,
1500, 2500
EN Classes PN 10,
PN 16, PN 25, PN 40
-450 to +1000°F
(-268 to +538°C)
•
•
ASME/NB certified capacities for air,
water and steam.
Full compliance with all major global
pressure relief standards including
ASME VIII, Section XIII, API 526/527,
EN4126 and PED/CE.
Highly customizable to meet
most applications.
Interchangeable parts to reduce
maintenance costs.
Full nozzle configuration.
Simple and reliable design.
Easy maintenance.
Soft seat options for superior
seat tightness.
Adjustable blowdown to reduce
product loss.
Restricted Lift available.
Available with inlet and outlet connections
according to EN 1092-1.
Dual capacity certified to ASME Code
Case 2787
Balanced Diaphragm technology
Available with wired or wireless volumetric
emissions monitoring and bellows
leak detection
5 to 6000 psig
(0.35 to 413.79 barg)
15 to 6000 psig
(1.03 to 413.79 barg)
25 to 6000 psig
(1.72 to 413.79 barg)
25 to 6000 psig
(1.72 to 413.79 barg)
25 to 1480 psig
(1.72 to 102 barg)
25 to 1480 psig
(1.72 to 102 barg)
ASME Section VIII and
Section XIII (15 psig
(1.03 barg) and above)
© 2017 Emerson. All Rights Reserved.
VCTDS-00597-EN 23/10
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
CONTENTS
Introduction/description���������������������������������������������������������������������������������������������������������������������������1
Product range�������������������������������������������������������������������������������������������������������������������������������������������2
O-ring soft seats ������������������������������������������������������������������������������������������������������������������������������������22
Variations from standard materials�������������������������������������������������������������������������������������������������������23
Caps and lifting levers����������������������������������������������������������������������������������������������������������������������������27
Sizes, dimensions, weights and pressure/temperature limits for ANSI flanges�������������������������������30
Sizes, dimensions, weights and pressure/temperature limits for EN1092-1 flanges�����������������������75
Capacity tables (U.S.C.S.)�����������������������������������������������������������������������������������������������������������������������89
Capacity tables (metric)........................................................................................................................ 102
Equivalents and conversion factors�����������������������������������������������������������������������������������������������������114
Block body relief valves������������������������������������������������������������������������������������������������������������������������115
Ordering information����������������������������������������������������������������������������������������������������������������������������117
Valve sizing��������������������������������������������������������������������������������������������������������������������������������������������123
PRODUCT RANGE
Series JOS-E and JLTJOS-E are the standard conventional relief valve designs for applications
when the discharge is to the atmosphere or to a low pressure exhaust system designed to contain
the process fluid.
Series JBS-E and JLTJBS-E pressure relief valves incorporate a bellows which is balanced
to minimize the effects of variable back pressure on valve set pressure and can also handle
applications involving high built-up back pressure.
Series JDS-E and JLTJDS-E designs offer a robust balanced diaphragm design, replacing
traditional bellows, to minimize the effects of variable back pressure on valve set pressure with
improved durability and enhanced Kb factor increasing capacity and back pressure rating.
For liquid service applications, Series JLTJOS-E, JLTJDS-E and JLTJBS-E provide stable operating
performance using our industry-recognized liquid trim design, which allows the valve to achieve
full lift at 10% overpressure without valve chatter.
Series JOS-H-E are open bonnet pressure relief valves intended for ASME Code Section VIII and
Section XIII steam service applications and are furnished with a regular lifting lever as standard.
Series JBSBP-E and JLTJBSBP-E are balanced bellows valves with a supplementary
back pressure balancing piston with optional wired or wireless bellows leak detection
monitoring options.
Series JOS-E-B, JDS-E-B and and JBS-E-B are BlockBody pressure relief valves that provide a
cost-effective alternative to multiple high pressure smaller orifice valves.
Series JOS-E-RL, JDS-E-RL and JBS-E-RL are restricted lift valves with a physical stop reducing
the rated capacity to meet application requirements.
J-Series capacities are certified by the National Board of Boiler and Pressure Vessel Inspectors.
Castings and forgings are procured to ASME/ASTM material specifications and are available in a
number of material combinations such as Monel®, Hastelloy® and stainless steel in addition to a
number of special material combinations such as titanium, duplex stainless steel and Inconel®,
which are available on application.
ASME inlet and outlet connections
Dimensions of flanges conform to current ASME standards. All steel raised face flanges are spiral
concentric serrated finish with 45 to 55 grooves per inch and a finish between 125 Ra and 250 Ra.
EN inlet and outlet connections
Dimensions of EN flanged Inlet and Outlet connections conform to EN 1092-1 with Type B1 raised
face flange as standard.
Other flange connections
Other flange facings, such as ring type joint or special connection types, are available on request.
2
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SEAT DESIGN
FIGURE 1
Series JOS-E, JDS-E and JBS-E relief valves are available with soft seats (Figure 1) or metal seats
(Figure 2). Their two-piece disc holder/disc insert construction provides thermal balancing assuring
maximum seat tightness and meets the requirements of API Standard 527, ‘Seat tightness of pressure
relief valves’.
Where system operating conditions permit, soft or elastomer O-ring seat construction is available
as an option. This two-seat design (Figure 1) has a metal-to-metal seat located downstream of the
soft seat. The O-ring is the primary seal. The flat metal-to-metal seat controls the compression
of the O-ring and also serves as a secondary seal should the O-ring be damaged. Elastomeric
O-ring soft seat valves are tightness tested at 95% of set pressure, exceeding the requirements of
API Standard 527.
Standard O-ring materials include FKM, NBR, EPR, TFE, silicone rubber and FFKM (see page 22 for
pressure and temperature limits). Other soft seat materials are available on application.
DUAL CERTIFICATION
FIGURE 2
The JLT trim (Figure 2) offers a significant increase in capacity at 10% overpressure and, in many
cases, results in selection of a smaller valve with an associated reduction in inlet and discharge
piping costs.
The JLT design is also capacity certified for gas and vapor service and can be applied in two-phase
flow applications. Additionally, the JLT design allows for ASME Code Case 2787, which allows
the marking of multiple capacities on the valve nameplate if required. The JLT design is a logical
choice where the process fluid may be a liquid or gas depending on the overpressure condition.
BELLOWS CONVERTIBILITY
The flanged, spring operated pressure relief valve is designed and manufactured as a conventional
valve and a balanced bellows valve. The conversion from conventional Series JOS-E or JLTJOS-E
in sizes 1" D 2" through 8" T2 10" requires only the addition of a bellows assembly and bellows
tail-piece gasket. No other parts are necessary.
FIGURE 3
BELLOWS AND TOP FLANGE
All standard JBS-E and JLTJBS-E valves feature a standard bellows and top flange (Figure 3)
manufactured from Inconel® alloy 625, which is a fatigue-resistant material and provides improved
corrosion resistance compared to 316L stainless steel. It is highly resistant to pitting, crevice
corrosion and inter-granular attack.
The standard bellows assembly threads onto the disc holder with a bellows tailpiece and gasket.
A welded bellows attachment is available as an option.
BALANCED DIAPHRAGM
The JDS-E Balanced Diaphragm technology reduces maintenance costs, improves reliability,
increases safety and is backed by extensive testing.
FIGURE 4
All existing JOS-E, JLTJOS-E, JBS-E, JLTJBS-E valves can be easily upgraded to the JDS-E
balanced diaphragm with available upgrade kits (Figure 4).
NOTE
Inconel® is a mark owned by Special Metals Corporation.
3
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
EASE OF MAINTENANCE AND COMPONENT INTERCHANGEABILITY
FIGURE 5
The JOS-E, JDS-E and JBS-E’s disc insert retention, disc holder and nozzle ring have been
engineered to ensure ease of maintenance, minimize spare parts and provide a high degree of
component part interchangeability (Figure 5).
The disc insert is held securely in place with a compressible retention clip. A ‘universal’ disc holder
allows simple and cost effective conversions from conventional to balanced design ensuring
cost-effective balanced diaphragm or bellows replacement.
The nozzle ring encloses the adjustment slot at the bottom of the ring giving a rugged,
durable design.
CAP, LIFTING LEVER AND SPINDLE INTERCHANGEABILITY
All J-Series Relief Valves permit easy cap or lifting lever conversions, with maximum
standardization and interchangeability of parts.
CERTIFICATIONS AND TYPE APPROVALS
•
•
•
•
•
•
•
•
•
ASME Boiler and Pressure Code Section VIII and Section XIII
National Board of Boiler and Pressure Vessel Inspectors Capacity Certifications
Canadian Registration Number
Pressure Equipment Directive (2014/68/EU), (ISO-4126-1) (CE)
China Manufacturing License (TS)
United States Coast Guard (USCG)
Australia (AS-1271)
Bureau Veritas (BV) certification
Dual capacity certified to ASME Code Case 2787
Contact your local Emerson sales representative for further details.
AVAILABLE OPTIONS
Materials
• Special materials Alloy 20, duplex, titanium; others upon request
• Xylan coating inside body/bonnet/cap
• Spring coatings and platings
• Materials of construction for applications above 1000°F (538°C)
• Special gasket materials including graphite, Hastelloy®, PTFE etc.
Connections
• 300# cosmetic or fully rated non-standard outlets
• Special connections such as tri-clamp, Grayloc etc.
• International flange standards
• Flat face and RFSF flange options
ASSET MANAGEMENT TAG (RFID)
Accessories
• Steam jacketed bodies
Monitoring
• Bellows Leak Detection using a Rosemount™ 2051 or 3051 Wired or Wireless
Pressure Transmitter. (Requires Balancing Piston (BP) model valve)
• Rosemount™ 708 Wireless Acoustic Transmitter
• Fisher™ 4200 Wired Position Transmitter
• TopWorx™ Wired and Wireless Limit Switches
• Asset Management Tag (RFID)
Others
• High pressure forged block body design
• Special painting or coating
• Special cleaning and testing
• Welded disc holder
• Lethal service construction
• Fugitive Emissions compliant construction
BELLOWS LEAK DETECTION
4
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-E/JLTJOS-E PRODUCT OVERVIEW
Series JOS-E and JLTJOS-E are the standard conventional relief valve designs for applications
when the discharge is to the atmosphere or to a low pressure exhaust system designed to contain
the process fluid.
Their exceptionally rugged design features a high guiding surface ratio and corrosion
resistant trim.
For liquid service applications, Series JLTJOS-E provide stable operating performance using
our industry-recognized liquid trim design, which allows the valve to achieve full lift at 10%
overpressure without valve chatter.
Temperature range[1][2]
JOS-E and JLTJOS-E( )5:
JOS-E and JLTJOS-E( )6:
JOS-E and JLTJOS-E( )7:
-20 to 650°F (-29 to 343°C)
651 to 800°F (344 to 427°C)
801 to 1000°F (428 to 538°C)
NOTES
1. Temperature range is defined using the allowable temperature at the inlet of the valve.
2. Temperature ranges shown are for standard materials of construction.
SERIES JOS-E
(with metal-to-metal seat)
SERIES JLTJOS-E
(with O-ring seat)
5
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-E AND JLTJOS-E STANDARD MATERIALS OF CONSTRUCTION
No.
1
1
2
3
4
5
8
9
10
11
12
13
14
15
Part name
Body - JOS-E and JLTJOS-E ( )5 and ( )6
Body - JOS-E and JLTJOS-E ( )7
Nozzle(2)
Nozzle ring[3]
Set screw[3] (except P to T orifice JLT)
Disc holder[2]
Disc insert(2)
Retention clip(2,4)
O-ring (seat)[1]
O-ring retainer(3)
O-ring retainer screw(3)
Nozzle ring lockscrew P to T orifice JLT(3) (not shown)
Set screw plug P to T orifice JLT(3) (not shown)
Guide[3]
16
17
18
18
19
20
20
Spindle[3]
Spindle cotter pin(2) (L to T orifice)
Spring - JOS-E and JLTJOS-E ( )5[3]
Spring - JOS-E and JLTJOS-E ( )6 and ( )7[3]
Spring washer[3]
Bonnet - JOS-E and JLTJOS-E ( )5 and ( )6
Bonnet - JOS-E and JLTJOS-E ( )7
Standard material
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
316 SS
316 SS
316 SS
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
------ASTM A297 Gr. HE SST
416 SS(8)
SS
Chrome steel[5]
Alloy steel[5][6]
CS
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
21
Bonnet stud(3)
ASME SA193 Gr. B7
22
24
25
27
28
Bonnet stud nut(3)
Adjusting bolt(3)
Adjusting bolt nut(3)
Gasket (set screw)[1]
Gasket (guide)(1)
33
34
36
40
41
Bonnet vent plug
Seal and wire
Nameplate (not shown)
Cap
Gasket (cap)(1)
ASME SA194 CL 2H
316 SS[7]
316 SS
316 SS
316 SS
CS
Lead and SS
SS
CS
316 SS
NOTES
1. Consumable spare part
2. Repair spare part
3. Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. ANSI Pressure Class 900, 1500 and 2500 inlet ratings use 416 SS
8. Crosby may substitute 316 SS.
6
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-E AND JLTJOS-E CONVENTIONAL PRESSURE RELIEF VALVES
40
12
24
11
25
10
34
41
19
20
SERIES JLTJOS-E
(with O-ring seat)
18
33
19
16
21
17
22
28
15
9
8
5
3
4
34
27
1
2
SERIES JOS-E
(with metal-to-metal seat)
7
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JDS-E/JLTJDS-E PRODUCT OVERVIEW
Series JDS-E and JLTJDS-E Pressure Relief Valves incorporate a reinforced diaphragm providing
balanced operation to minimize the effects of variable back pressure on set pressure and allows
for operation with higher built-up back pressure compared with a bellows valve.
The Crosby Balanced Diaphragm extends the back pressure limits up to 80% of set pressure and
increases the Kb factor up to 15%, expanding the application range of spring-loaded PRVs.
Temperature range[1][2]
JDS-E and JLTJDS-E( )5:
-13 to 500°F (-25 to 260°C)
NOTES
1. Temperature range is defined using the allowable temperature at the inlet of the valve.
2. Temperature ranges shown are for standard materials of construction.
Details
• Back pressure limits extended up to 80%
• 15% improvement in Kb factor enables sizing of smaller and/or fewer valves
• 100x more resilient than metal bellows for high-frequency cycling, ensuring safety
• Same springs as standard JOS valves reducing spare parts and inventory costs
• Easily convert existing Crosby J-Series with Balanced Diaphragm upgrade kits
• Cycle, burst and fire tested and independently witnessed by Lloyd's Register
SERIES JDS-E
SERIES JDS-E
SERIES JDS-E DIAPHRAGM
8
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JDS-E AND JLTJDS-E STANDARD MATERIALS OF CONSTRUCTION
No.
1
1
2
3
4
5
7A
7B
7C
7D
Part name
Body - JDS-E and JLTJDS-E ( )5 and ( )6
Body - JDS-E and JLTJDS-E ( )7
Nozzle(2)
Nozzle ring[3]
Set screw[3] (except P to T orifice JLT)
Disc holder[2]
Gasket diaphragm(1)
Spacer diaphragm(3)
Diaphragm(1)
Plate diaphragm(3)
7E
7F
8
9
10
11
12
13
14
15
Lock washer(1)
Lock washer nut(3)
Disc insert(2)
Retention clip(2,4)
O-ring (seat)(1)
O-ring retainer(3)
O-ring retainer screw(3)
Nozzle ring lockscrew L to T orifice JLT(3) (not shown)
Set screw plug P to T orifice JLT(3) (not shown)
Guide[3]
16
17
18
18
19
20
20
21
22
23
24
25
27
28
31
34
36
40
41
Spindle[3]
Spindle cotter pin(2) (L to T orifice)
Spring - JOS-E and JLTJOS-E ( )5[3]
Spring - JOS-E and JLTJOS-E ( )6 and ( )7[3]
Spring washer[3]
Bonnet - JOS-E and JLTJOS-E ( )5 and ( )6
Bonnet - JOS-E and JLTJOS-E ( )7
Bonnet stud(3)
Bonnet stud nut(3)
Bonnet adapter(3)
Adjusting bolt(3)
Adjusting bolt nut(3)
Gasket (set screw)(1)
Gasket (guide)(1)
Gasket (Bonnet Adapter)(1)
Seal and wire
Nameplate (not shown)
Cap
Gasket (cap)[1]
Standard material
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
316 SS
316 SS
316 SS
316L SS
25% Glass Filled PTFE
316 SS
Nomex with FKM Coating
316 SS
316 SS
316 SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
------ASTM A297 Gr. HE SST
416 SS(7)
SS
Chrome steel[5]
Alloy steel[5][6]
CS
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
ASME SA193 Gr. B7
ASME SA194 CL 2H
316 SS
316 SS[7]
316 SS
316 SS
316 SS
316 SS
Lead and SS
SS
CS
316 SS
NOTES
1. Consumable spare part
2. Repair spare part
3. Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. Crosby may substitute 316 SS.
9
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JDS-E AND JLTJDS-E BALANCED PRESSURE RELIEF VALVES
40
7F
24
25
7D
41
7C
34
7B
7E
19
20
7A
Note: this vent must
remain open on JDS-E and
JLTJDS-E construction
18
19
16
21
22
23
31
28
15
9
5
8
12
4
11
10
34
27
3
1
2
Series JLTJDS-E
(with O-ring seat)
NOTE
Bonnet vent must remain open on JDS-E and JLTJDS-E construction.
10
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JBS-E/JLTJBS-E PRODUCT OVERVIEW
Series JBS-E and JLTJBS-E pressure relief valves incorporate a bellows which is balanced
to minimize the effects of variable back pressure on valve set pressure and can also handle
applications involving high built-up back pressure.
Additionally, the bellows serves to isolate the guide, spindle, spring and other parts contained in
the bonnet chamber from corrosive fluids or media such as a highly viscous fluid or slurry which
could render the relief valve inoperative.
Their exceptionally rugged design features a high guiding surface ratio and corrosion
resistant trim.
For liquid service applications, Series JLTJBS-E provides stable operating performance using
our industry-recognized liquid trim design, which allows the valve to achieve full lift at 10%
overpressure without valve chatter.
Temperature range[1][2]
JBS-E and JLTJBS-E( )5:
JBS-E and JLTJBS-E( )6:
JBS-E and JLTJBS-E( )7:
-20 to 650°F (-29 to 343°C)
651 to 800°F (344 to 427°C)
801 to 1000°F (428 to 538°C)
NOTES
1. Temperature range is defined using the allowable temperature at the inlet of the valve.
2. Temperature ranges shown are for standard materials of construction.
SERIES JBS-E
(with metal-to-metal seat)
SERIES JBS-E
(with O-ring seat)
11
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JBS-E AND JLTJBS-E MATERIALS OF CONSTRUCTION
No.
1
1
2
3
4
5
6A
6B
6C
8
9
10
11
12
13
14
15
16
17
18
18
19
20
20
21
22
24
25
27
28
34
36
40
41
Part name
Body - JBS-E and JLTJBS-E ( )5 and ( )6
Body - JBS-E and JLTJBS-E ( )7
Nozzle(2)
Nozzle ring[3]
Set screw[3] (except P to T orifice JLT)
Disc holder[2]
Bellows tailpiece(2,8)
Bellows(2, 8)
Bellows flange(2,8)
Disc insert(2)
Retention clip(2,4)
O-ring (seat)[1]
O-ring retainer(3)
O-ring retainer screw(3)
Nozzle ring lockscrew P to T orifice JLT(3) (not shown)
Set screw plug P to T orifice JLT(3) (not shown)
Guide[3]
Spindle[3]
Spindle cotter pin(2) (L to T orifice)
Spring - JBS-E and JLTJBS-E ( )5[3]
Spring - JBS-E and JLTJBS-E ( )6 and ( )7[3]
Spring washer[3]
Bonnet - JBS-E and JLTJBS-E ( )5 and ( )6
Bonnet - JBS-E and JLTJBS-E ( )7
Bonnet stud(3)
Bonnet stud nut(3)
Adjusting bolt(3)
Adjusting bolt nut(3)
Gasket (set screw)[1]
Gasket (guide)(1)
Seal and wire
Nameplate (not shown)
Threaded cap
Gasket (cap)[1]
Standard material
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
316 SS
316 SS
316 SS
316L SS
316L SS
Inconel® 625
Inconel® 625
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
------ASTM A297 Gr. HE SST
416 SS(9)
SS
Chrome steel[5]
Alloy steel[5][6]
CS
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
ASME SA193 Gr. B7
ASME SA194 CL 2H
316 SS[7]
316 SS
316 SS
316 SS
Lead and SS
SS
CS
316 SS
NOTES
1. Consumable spare part
2. Repair spare part
3 Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. ANSI Pressure Class 900, 1500 and 2500 inlet ratings use 416SS
8. Supplied as a bellows assembly
9. Crosby may substitute 316 SS.
12
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JBS-E AND JLTJBS-E BALANCED BELLOWS PRESSURE RELIEF VALVES
40
24
12
11
25
10
34
41
19
Note: this vent must
remain open on JBS-E
and JLTJBS-E construction
20
SERIES JBS-E
(with O-ring seat)
18
19
21
16
22
17
28
15
6C
6B
9
6A
8
29
5
3
4
34
27
1
2
SERIES JBS-E
(with metal-to-metal seat)
13
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JLTJOS-E/JLTJDS-E/JLTJBS-E LIQUID TRIM PRESSURE RELIEF VALVES
Series JLTJOS-E , JLTJDS-E and JLTJBS-E Pressure Relief Valves for liquid service were developed
using our unique contoured trim design (Figure 5). The JLT trim offers a significant increase
in capacity at 10% overpressure and in many cases, results in selection of a smaller valve with
an associated reduction in inlet and discharge piping costs. It provides smooth and stable valve
operation on liquid service applications.
OPERATION
When system pressure reaches the specified set pressure, a small stream of fluid begins to flow
from the valve. Valve disc lift at this pressure is minimal.
As the system pressure increases into the range of 3% to 5% overpressure, the valve then opens
with a pop type lift to the full lift position. At 10% overpressure, the JLT valve will have attained full
lift and be flowing an amount equal or greater than the rated capacity (Figure 6).
As the system pressure begins to drop, flow through the valve decreases until the valve reseats
with a clean positive closing action.
The JLT design is also capacity certified for gas and vapor service and can be applied in two-phase
flow applications.
FIGURE 5
FIGURE 6
TYPICAL FLOW CURVE - CONTOURED TRIM DESIGN (JLT)
100
Liquid trim disc holder
with contour
50
25
Pop lift
Closed
% Maximum rated capacity
75
Uniform increase in lift
-15 -10 -5
0
Blow
down
5
10 15 20 25
30
Overpressure
Set point
14
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-H-E OPEN BONNET STEAM SERVICE PRESSURE RELIEF VALVES
Series JOS-H-E relief valves (Figure 8) are intended for ASME Code Section VIII and Section XIII
steam service applications and are furnished with a regular lifting lever as standard.
The standard chrome steel spring in the JOS-H-E open bonnet design is exposed for
atmospheric cooling.
Optional accessories include a test rod as well as a weather hood. Materials of construction are
identical to the standard closed bonnet JOS-E design.
The JOS-H-E has a maximum temperature rating of 800°F [427°C] using WCB/WCC.
carbon steel body and bonnet and chrome steel spring.
Series JOS-H-E (and JOS-E) relief valves for steam service at set pressures above 450 psig
(31.02 barg) use a 316L stainless steel disc holder with disc bushing and threaded 17-4 ph
stainless steel disc insert (see Figure 7).
FIGURE 8
FIGURE 7
Disc holder
Bushing
Disc insert
Steam service trim for set pressures
greater than 450 psi (31.02 bar)
JOS-H-E conventional open bonnet
(Drain hole optional for ASME
Section VIII applications)
15
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-E/JBS-E/JDS-E/JLT RESTRICTED LIFT PRESSURE RELIEF VALVES
All Crosby J-Series Pressure Relief Valves are available in a restricted lift version. The purpose of
a restricted lift valve is to more closely match the required capacity of the protected vessel or pipe
with the actual and rated capacities of the relief valve providing over-pressure protection.
Restricted lift (RL) versions of the J-Series may be built by a certified Emerson manufacturing
facility or by an ASME certified Assembler with the required certification specific to the RL version.
OPERATION
The restricted lift design adds a stainless steel washer to the top of the disc holder. The washer
restricts the lift of the disc holder by creating a physical stop with the guide at a lower lift value
than the disc holder and guide alone.
When system pressure reaches the specified set pressure, the valve begins to go into lift. As the
system pressure increases the valve will exhibit a pop type lift at either set pressure or 3-5%
overpressure depending on the trim type. At 10% overpressure the valve will have attained its
restricted full lift.
As the system pressure begins to drop, flow through the valve decreases until the valve reseats
identically to any other trim configuration.
The JOS-E-RL/JLTJOS-E-RL design is capacity certified on gas, liquid, and steam and can be used
on any JOS-E/JLTJOS-E trim variant.
Spacers
Spacers
Liquid trim disc
holder with contour
Diaphragm
Spacers
SERIES JLTJOS-E-RL TRIM
JDS-E-RL TRIM
JBS-E-RL TRIM
16
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-E AND JLT-JOS-E PRESSURE RELIEF VALVES FOR SOUR GAS SERVICE
Level 1 - T
his level indicates that all materials used in the primary (wetted while the valve is
closed) pressure zone of the pressure relief valve meet the material requirements of the
current revision of ANSI/NACE MR0175/ISO 15156-1:2015. Materials of construction for
Level 1 valves are standard and can be found on page 6.
Level 2 - T
his level indicates that all materials used in the primary (wetted while the valve is
closed) and secondary (wetted while the valve is open and flowing) pressure zones
of the pressure relief valve meet the material requirements of the current revision of
ANSI/NACE MR0175/ISO 15156-1:2015.
The purchaser must decide whether their specific application requires compliance to NACE
recommendations. Emerson will provide materials that meet the material requirements in the
requested NACE specification; however, the purchaser must ensure all valve materials selected
meet their application’s NACE requirements.
SERIES JOS-E AND JLTJOS-E MATERIALS OF CONSTRUCTION[2]
No.
Part name
1
2
3
4
5
8
9
Body
Nozzle
Nozzle ring
Set screw
Disc holder
Disc insert
Retention clip
Standard NACE material
Level 2 (N2)
ASME SA216 Gr. WCB/WCC
316 SS
316 SS
316 SS
316L SS
316 SS
Inconel® X750
15
16
17
18
19
20
21
22
24
25
27
28
30
34
40
41
Guide
Spindle
Spindle cotter pin
Spring
Spring washer
Bonnet
Bonnet stud
Bonnet stud nut
Adjusting bolt
Adjusting bolt nut
Set screw gasket
Guide gasket
Bonnet vent plug
Seal and wire
Threaded cap
Cap gasket
ASTM A297 Gr. HE SST
316 SS*
SS
Inconel® X750*
316 SS*
ASME SA216 Gr. WCB/WCC
ASME A193 Gr. B7M[1]
ASME A194 Class 2HM[1]
316 SS*
316 SS
316 SS
316 SS
CS
Lead and SS
CS
316 SS
40
24
25
34
19
20
18
33
19
16
21
17
22
28
15
9
8
5
3
* Variation from standard and NACE Level 1 product.
NOTES
1. The ASME A193 Gr. B7M bonnet stud and ASME A194 Class 2HM bonnet stud nut will have hardness of
HRC - 22 maximum. Other materials can be provided upon request.
2. For special material availability, please contact your local sales representative.
41
4
34
27
1
2
SERIES JOS-E
17
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JBS-E/JLTJBS-E AND JDS-E/JLTJDS-E PRESSURE RELIEF VALVES FOR SOUR
GAS SERVICE
Level 1 - T
his level indicates that all materials used in the primary (wetted while the valve is
closed) pressure zone of the pressure relief valve meet the material requirements
of the current revision of ANSI/NACE MR0175/ISO 15156-1:2015. Materials
of construction for Level 1 valves are standard and can be found on pages 9
(Series JDS-E) and 12 (Series JBS-E).
Level 2 - T
his level indicates that all materials used in the primary (wetted while the valve is
closed) and secondary (wetted while the valve is open and flowing) pressure zones
of the pressure relief valve meet the material requirements of the current revision of
ANSI/NACE MR0175/ISO 15156-1:2015. The Inconel® 625 bellows isolates valve spring
and other critical components from the process fluid.
The purchaser must decide whether their specific application requires compliance to NACE
recommendations. Emerson will provide materials that meet the material requirements in the
requested NACE specification; however, the purchaser must ensure all valve materials selected
meet their application’s NACE requirements.
SERIES JBS-E AND JLTJBS-E MATERIALS OF CONSTRUCTION[3][4]
Standard NACE material
Level 2 (N2)
ASME SA216 Gr. WCB/WCC
316 SS
316 SS
316 SS
No.
Part name
1
2
3
4
6C
Body
Nozzle
Nozzle ring
Set screw
Bellows flange[1]
6B
6A
5
8
9
Bellows[1]
Bellows tailpiece[1]
Disc holder
Disc insert
Retention clip
Inconel 625
Inconel® 625
316L SS
316L SS
316 SS
Inconel® X750
15
16
17
18
19
20
21
22
24
25
27
28
29
34
40
41
Guide
Spindle
Spindle cotter pin
Spring
Spring washer
Bonnet
Bonnet stud
Bonnet stud nut
Adjusting bolt
Adjusting bolt nut
Set screw gasket
Guide gasket
Tailpiece gasket
Seal and wire
Threaded cap
Cap gasket
ASTM A297 Gr. HE SST
416 SS(5)
SS
Chrome steel-aluminum metallized*
Steel
ASME SA216 Gr. WCB/WCC
ASME A193 Gr. B7M[2]
ASME A194 Class 2HM[2]
316 SS
316 SS
316 SS
316 SS
316 SS
Lead and SS
CS
316 SS
40
24
25
34
41
®
* Variation from standard product; Crosby may upgrade to Inconel® X750.
NOTES
1. Supplied as a bellows assembly.
2. The ASME A193 Gr. B7M bonnet stud and ASME A194 Class 2HM bonnet stud nut will have hardness of
HRC - 22 maximum. Other materials can be provided upon request.
3. For special material availability, please contact your local sales representative.
4. N1 designation available for JBS-E and JLTJBS-E series with standard chrome steel springs
(non-standard option).
5. Crosby may substitute 316 SS.
19
20
18
19
21
16
22
17
28
15
6C
6B
9
6A
8
29
5
3
4
34
27
1
2
SERIES JBS-E
(with bellows)
18
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JBS-E/JLTJBS-E AND JDS-E/JLTJDS-E PRESSURE RELIEF VALVES FOR SOUR
GAS SERVICE (continued)
7F
SERIES JDS-E AND JLTJDS-E MATERIALS OF CONSTRUCTION
[2][3]
No.
Part name
1
1
2
3
4
5
7A
7B
7C
7D
7E
7F
8
9
Body - JDS-E and JLTJDS-E ( )5 and ( )6
Body - JDS-E and JLTJDS-E ( )7
Nozzle
Nozzle ring
Set screw (except P to T orifice JLT)
Disc holder
Gasket diaphragm
Spacer diaphragm
Diaphragm
Plate diaphragm
Lock washer
Lock washer nut
Disc insert
Retention clip
Standard NACE material
Level 2 (N2)
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
316 SS
316 SS
316 SS
316L SS
25% Glass Filled PTFE
316 SS
Nomex with FKM Coating
316 SS
316 SS
316 SS
316 SS
Inconel® X750
10
11
12
13
14
15
16
O-ring (seat)
O-ring retainer
O-ring retainer screw(s)
Nozzle ring lockscrew P to T orifice JLT (not shown)
Set screw plug P to T orifice JLT (not shown)
Guide
Spindle
Specify
316 SS
18-8 SS
------ASTM A297 Gr. HE SST
416 SS(4)
17
18
18
19
20
20
21
Spindle cotter pin L to T orifice (not shown)
Spring - JOS-E and JLTJOS-E ( )5
Spring - JOS-E and JLTJOS-E ( )6 and ( )7
Spring washer
Bonnet - JOS-E and JLTJOS-E ( )5 and ( )6
Bonnet - JOS-E and JLTJOS-E ( )7
Bonnet stud
SS
Chrome steel
Alloy steel
CS
ASME SA216 Gr. WCB/WCC
ASME SA217 Gr. WC6
ASME A193 Gr. B7M[1]
22
Bonnet stud nut
ASME A194 Class 2HM[1]
23
24
25
27
28
34
36
40
41
Bonnet adapter
Adjusting bolt
Adjusting bolt nut
Gasket (set screw)
Gasket (guide)
Seal and wire
Nameplate (not shown)
Cap
Gasket (cap)
316 SS
316 SS
316 SS
316 SS
316 SS
Lead and SS
SS
CS
316 SS
7D
7C
7B
7E
7A
SERIES JDS-E
(WITH DIAPHRAGM)
40
24
25
41
34
19
20
18
16
19
21
22
31
28
23
15
9
5
8
4
34
27
3
NOTES
1. The ASME A193 Gr. B7M bonnet stud and ASME A194 Class 2HM bonnet stud nut will have hardness of
HRC - 22 maximum. Other materials can be provided upon request.
2. For special material availability, please contact your local sales representative.
3. N1 designation available for JDS-E and JLTJDS-E series with standard chrome steel springs
(non-standard option).
4. Crosby may substitute 316 SS.
1
2
Series JDS-E (with Diaphragm)
19
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JBSBP-E AND JLTJBSBP-E BALANCED BELLOWS VALVES WITH SUPPLEMENTARY
BACK PRESSURE BALANCING PISTON
Series JBSBP-E and JLTJBSBP-E are extensions to the standard bellows pressure relief valves
which have been designed and tested in collaboration with engineers of one of the world’s leading
petroleum companies. This adaptation provides additional assurance of balanced performance in
the event of bellows failure on installations with discharge manifold systems where constant or
variable back pressures are present.
With the standard bellows pressure relief valve, if the bellows is broken or ruptured, the valve will
perform in the manner of a standard valve without bellows. Introduction of the supplementary
back pressure balancing piston assures full performance characteristics of the valve until
necessary replacement of the bellows can be made, affording double protection.
Unless compensated for, the effects of back pressure may cause (1) a change in the opening
pressure (2) a decrease in valve capacity and (3) valve performance to become unstable at higher
back pressure.
Use of the bellows valve with supplementary balancing piston maintains the balancing effect even
after bellows failure enabling the valve to function in essentially the same manner as with the
bellows intact. However, the bonnet of the valve must be vented to ensure proper valve functioning.
The vent also serves as a ‘tell-tale’ in case of a ruptured or broken bellows.
Design
The auxiliary balancing piston is incorporated in the basic bellows valve, modified to include the
piston (5B) and the cylinder (5C) which is part of the disc holder.
The guiding clearances are held to a minimum and, in addition, grooves in the piston form a
labyrinth seal to reduce flow between the piston and cylinder. In the event of a bellows failure, the
leakage of fluid to atmosphere is kept to a minimum.
5B
5C
20
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
BELLOWS LEAK DETECTION
SERIES JBSBP-E AND JLTJBSBP-E BALANCED BELLOWS WITH BACK PRESSURE BALANCING
PISTON WITH MONITORING
Crosby Bellows Leak Detection utilizes a RosemountTM Pressure Transmitter and the back
pressure balancing piston design to provide instant, timestamped notification of a bellows failure
while reducing emissions and providing real-time information to evaluate and quantify fugitive
emissions through the bonnet vent.
Design
Bellows leak detection utilizes a Rosemount wired or wireless pressure transmitter that is
plumbed into the adapter (5C) and measures the chamber formed by the backup piston and the
bellows. In the event of a bellows rupture or failure, pressure will build up in the chamber which
will be sensed by the transmitter and instantly reported.
•
•
•
•
•
•
•
•
Instant notification of bellows rupture
High sensitivity detecting bellows rupture down to 0.0009 in2 at 1 psig
Balanced operation in the event of a bellows failure
Volumetric emissions calculation for risk and maintenance assessment
Over 90% reduction in emissions through the bonnet vent
Easy system integration with wired or wireless Rosemount transmitters
Can be easily installed in Crosby J-Series with available upgrade kits
Pressure limits are same as Series JBS-E
Rosemount Transmitter Details
• Rosemount™ 2051T In-line Pressure Transmitter
- Wireless
- Wired 4-20 mA based on HART® Protocol
- NACE MR0175/ISO 15156 for wetted materials
- Aluminum housing
- FM Explosion-proof, Dust Ignition-proof or FM Intrinsically Safe, Division 2
- Consult factory for additional configurations
•
Rosemount™ 3051T In-line Pressure Transmitter
- Wireless
- Wired 4-20 mA based on HART® Protocol
- NACE MR0175/ISO 15156 for wetted materials
- Aluminum housing
- FM Explosion-proof, Dust Ignition-proof or FM Intrinsically Safe, Division 2
- Advanced diagnostics
- Improved accuracy
- Consult factory for additional configurations
•
Reference Selection Guide for Bellows Leak Detection variation codes and PRV2SIZE for
sizing and selection
Transmitter temperature limited to 250°F (121°C), Consult factory for higher
temperature applications
For additional information on Rosemount transmitters, please contact your local Emerson
sales contact.
•
•
Rosemount™ 2051T In-line
Pressure Transmitter
Rosemount™ 3051T In-line
Pressure Transmitter
21
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
O-RING SOFT SEAT MATERIALS AND PRESSURE/TEMPERATURE LIMITS
1.03
6.90
Set
SetPressure,
pressure, bargbarg
34.5
69.0
102
260
FFKM (80)
500
FFKM (90)
TFE
TFE
400
100
50
0
-150
NBR (90)
EPR (90)
FFKM (90)
FKM (90)
TFE
NBR (60)
EPR (70)
Silicone (50)
NBR (90)
EPR (90)
Silicone (70)
TFE
15
100
200
300
400
500
600
700
800
900
1000
1200
Set pressure,
psig
Set Pressure,
psig
Figures in ( ) are durometer hardness specifications
MAXIMUM SET PRESSURE LIMITS
Maximum set pressure
psig
barg
1480
1480
1480
1480
1480
1480
1480
1000
1100
1000
1000
600
300
300
300
-45
102.0
102.0
102.0
102.0
102.0
102.0
102.0
68.9
75.8
68.9
68.9
41.3
20.6
20.6
20.6
NOTES
1. Other soft seat materials are available on request.
For O-ring seats below -150°F (-101°C) consult
your sales representative. For steam service,
metal-to-metal seats are recommended; consult
your sales representative if soft seats are required.
Minimum cold differential test pressure for TFE
seat is 100 psig (6.89 barg).
1400
-101
1480set
or max.
set
1480 or max.
pressure
rating soft
of the
rating pressure
of the O-ring
O-ring soft seat valve
seat valve.
Figures in ( ) are Durometer Hardness
Specifications.
Orifice
D
E
F
G
H
J
K
L
M
N
P
Q
R
T
T2
-17
Silicone (80)
TFE
TFE
TFE
temperature, °C
InletInlet
Temperauture,
°C
FKM (75)
FFKM (80)
Silicone (50)
93
NBR (70)
EPR (70)
-50
FFKM (90)
FKM (90)
TFE
NBR (70)
EPR (80) 325°F Max
FFKM (80)
Silicone (70)
FKM (75)
TFE
Silicone (50)
FKM (75)
200
FFKM (80)
Silicone (80)
FKM (75)
TFE
NBR (50)
EPR (70)
Inlet temperature, °F
Inlet Temperauture, °F
300
204
EPR
TFE
Ethylene Propylene Rubber
Tetrafluoroethylene
22
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
JOS-E, JBS-E AND JLT - VARIATIONS FROM STANDARD MATERIALS[9]
No.
1
Part name
Body
2
3
Nozzle
Nozzle ring[3]
4
5
6C
6B
6A
8
9
10
11
12
15
Set screw[3]
Disc holder[2]
Bellows flange[2][8]
Bellows[2][8]
Bellows tailpiece[2][8]
Disc insert[1]
Retention clip[1][4]
O-ring[1]
O-ring retainer[2]
Retainer screws[2]
Guide[3]
16
17
18
Spindle[3](14)
Spindle cotter pin[1]
Spring[3]
19
Spring washer[3]
JOS-E/JBS-E/JLT
-55 to 650°F
(-48.5 to 343°C)
( ) ( ) LT
( ) ( ) L6
ASME SA352
ASME SA352
Gr. LCB/LCC
Gr. LCB/LCC
316 SS
316 SS
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
416 SS
SS
Chrome steel[5]
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
416 SS
SS
Inconel® X750
CS
316 SS
Low temperature
316 Stainless steel
JOS-E/JBS-E/JLT( )4 JOS-E/JBS-E/JLT( )2 JOS-E/JBS-E/JLT JOS-E/JBS-E/JLT JOS-E/JBS-E/JLT
-55 to 650°F
-450 to -55°F
-20 to 650°F
-55 to 1000°F
-50 to 500°F
(-48.5 to 343°C)
(-268 to -48.5°C)
(-29 to 343°C)
(-48.5 to 538°C)
(-45.6 to 260°C)
( ) ( ) S4
( ) ( ) S6
()()S
ASME SA351
ASME SA351
ASME SA216
ASME SA351
ASME SA351
Gr. CF8M
Gr. CF8M
Gr. WCB/WCC
Gr. CF8M
Gr. CF8M
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
416 SS
SS
Chrome steel[5] or
Inconel® X750
CS
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
316 SS
SS
316 SS
316 SS
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
316 SS
SS
Chrome steel[5] or
Alloy steel[6]
316 SS
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
316 SS
SS
Inconel® X750
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
316 SS
Inconel® X750
Specify
316 SS
18-8 SS
ASTM A297
Gr. HE SST
316 SS
SS
316 SS
316 SS
316 SS
NOTES
1. Consumable spare part
2. Repair spare part
3. Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. ANSI Pressure Class 900, 1500 and 2500 inlet ratings use 416 SS
8. Supplied as a bellows assembly
9. Material temperature range defined by temperature seen at inlet of valve
10. Temperature limit for 316 SS spring is +500°F (+260°C)
11. Temperatures above +650°F (+343°C), alloy steel nickel plated or Inconel® X750 supplied
12. Permitted by ASME Code Case 1750
13. Minimum temperature for Inconel® X750 springs is -320°F (-196°C)
14. Crosby may substitute 316 SS.
23
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
JOS-E, JBS-E AND JLT - VARIATIONS FROM STANDARD MATERIALS[9] (continued)
Low temperature
316 Stainless steel
JOS-E/JBS-E/JLT
JOS-E/JBS-E/JLT( )4 JOS-E/JBS-E/JLT( )2 JOS-E/JBS-E/JLT JOS-E/JBS-E/JLT JOS-E/JBS-E/JLT
-55 to 650°F
-55 to 650°F
-450 to -76°F
-20 to 650°F
-55 to 1000°F
-55 to 500°F
(-48.5 to 343°C)
(-48.5 to 343°C)
(-268 to -60°C)
(-29 to 343°C)
(-48.5 to 538°C)
(-48.5 to 260°C)
( ) ( ) LT
( ) ( ) L6
( ) ( ) S4
( ) ( ) S6
()()S
No. Part name
20 Bonnet
ASME SA352 ASME SA352
ASME SA351
ASME SA351
ASME SA216
ASME SA351
ASME SA351
Gr. LCB/LCC Gr. LCB/LCC
Gr. CF8M
Gr. CF8M
Gr. WCB/WCC
Gr. CF8M
Gr. CF8M
21 Bonnet stud
ASME SA320 ASME SA320
ASME SA193
ASME SA193
ASME SA193
ASME SA193
ASME SA193
Gr. L7
Gr. L7
Gr. B8
Gr. B8
Gr. B7
Gr. B8
Gr. B8
22 Bonnet stud nut
ASME SA194 ASME SA194
ASME SA194
ASME SA194
ASME SA194
ASME SA194
ASME SA194
Gr. 7L
Gr. 7L
Gr. 8
Gr. 8
CL. 2H
Gr. 8
Gr. 8
24 Adjusting bolt
316 SS
316 SS
316 SS
316 SS
316 SS[6]
316 SS
316 SS
25 Adjusting bolt nut
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
27 Set screw gasket[1]
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
28 Guide gasket[2]
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
29 Tailpiece gasket[1]
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
30 Pipe plug (non-bellows)
CS
CS
316 SS
316 SS
CS
316 SS
316 SS
34 Seal and wire
Lead and SS Lead and SS
Lead and SS
Lead and SS
Lead and SS
Lead and SS
Lead and SS
35 Seal clip (not shown)
SS
SS
SS
SS
SS
SS
SS
36 Nameplate (not shown)
SS
SS
SS
SS
SS
SS
SS
40 Threaded cap
CS
CS
316 SS
316 SS
CS
316 SS
316 SS
41 Cap gasket[1]
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
NOTES
1. Consumable spare part
2. Repair spare part
3. Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. ANSI Pressure Class 900, 1500 and 2500 inlet ratings use 416 SS
8. Supplied as a bellows assembly
9. Material temperature range defined by temperature seen at inlet of valve
10. Temperature limit for 316 SS spring is +500°F (+260°C)
11. Temperatures above +650°F (+343°C), alloy steel nickel plated or Inconel® X750 supplied
12. Permitted by ASME Code Case 1750
13. Minimum temperature for Inconel® X750 springs is -320°F (-196°C)
40
24
25
41
34
19
12
10
17
30
20
11
18
19
21
22
15
8
5
34
16
17
28
9
3
4
27
1
2
COTTER PINS
Used in L orifice and above only
JLT
O-ring soft seat
JOS-E
24
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
JOS-E, JBS-E AND JLT - VARIATIONS FROM STANDARD MATERIALS[9] (continued)
No.
1
Part name
Body
2
3
4
5
6C
6B
6A
8
9
10
11
12
Nozzle
Nozzle ring[3]
Set screw[3]
Disc holder[2]
Bellows flange[2][8]
Bellows[2][8]
Bellows tailpiece[2][8]
Disc insert[1]
Retention clip[1][4]
O-ring[1]
O-ring retainer[2]
Retainer screws[2]
15
16
17
Guide[3]
Spindle[3]
Spindle cotter pin[1]
18
19
Spring[3]
Spring washer[3]
20
Bonnet
21
Bonnet stud
22
24
25
26
27
28
29
30
34
35
40
41
Bonnet stud nut
Adjusting bolt
Adhusting bolt nut
Nameplate (not shown)
Set screw gasket[1]
Guide gasket[2]
Tail piece gasket[1]
Pipe plug (non-bellows)
Seal and wire
Seal clip
Threaded cap
Cap gasket[1]
Monel®
( ) ( ) M1
ASME SA216
Gr. WCB/WCC
Monel®
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
Monel®
Inconel® X750
Specify
Monel®
Monel®
ASTM A297
Gr. HE SST
416 SS(14)
SS
Chrome steel[5]
or Alloy steel[5]
( ) ( ) M4
( ) ( ) M5
( ) ( ) M6
()()M
( )5 M7
( )2 M7
ASME SA216
ASME SA494
ASME SA494
ASME SA494
ASME SA351
SME SA351
Gr. WCB/WCC
Gr. M35-1[9]
Gr. M35-1[9]
Gr. M35-1[9]
CF8M
CF8M
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
316 SS
316 SS
Monel®
Monel®
Monel®
Monel®
316 SS
316 SS
Monel®
Monel®
Monel®
Monel®
316L SS
316L SS
Monel®
Monel®
Monel®
Monel®
Inconel® 625 Inconel® 625
Monel®
Monel®
Monel®
Monel®
Inconel® 625 Inconel® 625
Monel®
Monel®
Monel®
Monel®
316L SS
316L SS
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Inconel® X750 Inconel® X750 Inconel® X750 Inconel® X750 Inconel® X750 Inconel® X750
Specify
Specify
Specify
Specify
Specify
Specify
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
Monel®
A297
A297
Monel®
Monel®
Monel®
Monel®
Gr. HE SST
Gr. HE SST
Monel®
Monel®
Monel®
Monel®
316 SS
316 SS
®
®
®
Monel
Monel
Monel
Monel®
SS
SS
Chrome steel[6] Chrome steel[6]
Monel® or
or Alloy steel[6] Nickel plated[11] Inconel® X750 Inconel® X750
316 SS
316 SS
CS
ASME SA216
Gr. WCB/WCC
ASME SA193
Gr. B7
ASME SA194
CL. 2H
316 SS[7]
316 SS
SS
316 SS
316 SS
316 SS
CS
Lead and SS
SS
CS
316 SS
316 SS
ASME SA216
Gr. WCB/WCC
ASME SA193
Gr. B7
ASME SA194
CL. 2H
Monel®
Monel®
SS
Monel®
Monel®
Monel®
CS
Lead and SS
SS
CS
Monel®
316 SS
ASME A494
Gr. M35-1[11]
ASME SA193
Gr. B8
ASME SA194
Gr. 8
Monel®
Monel®
SS
Monel®
Monel®
Monel®
Monel®
Lead and SS
SS
Monel®
Monel®
Monel®
ASME A494
Gr. M35-1[11]
ASME SA193
Gr. B8
ASME SA194
Gr. 8
Monel®
Monel®
SS
Monel®
Monel®
Monel®
Monel®
Lead and SS
SS
Monel®
Monel®
( )5 M8
( )2 M8
SME SA351
SME SA351
CF8M
CF8M
Monel®
Monel®
316 SS
316 SS
316 SS
316 SS
316L SS
316L SS
Inconel® 625 Inconel® 625
Inconel® 625 Inconel® 625
316L SS
316L SS
Monel®
Monel®
Inconel® X750 Inconel® X750
Specify
Specify
Monel®
Monel®
Monel®
Monel®
A297
A297
Gr. HE SST
Gr. HE SST
316 SS
316 SS
SS
SS
Inconel® X750
Monel®
316 SS
316 SS
316 SS
ASME A494
Gr. M35-1[11] SA351 CF8M SA351 CF8M SA351 CF8M
ASME SA193
Gr. B8
SA 193 Gr. B8 SA 193 Gr. B8 SA 193 Gr. B8
ASME SA194
Gr. 8
SA 194 Gr. 8 SA 194 Gr. 8 SA 194 Gr. 8
Monel®
316 SS
316 SS
316 SS
Monel®
316 SS
316 SS
316 SS
SS
SS
SS
SS
Monel®
316 SS
316 SS
316 SS
Monel®
316 SS
316 SS
316 SS
Monel®
316 SS
316 SS
316 SS
Monel®
316 SS
316 SS
316 SS
Lead and SS Lead and SS Lead and SS Lead and SS
SS
SS
SS
SS
Monel®
316 SS
316 SS
316 SS
Monel®
316 SS
316 SS
316 SS
Inconel® X750
316 SS
SA351 CF8M
SA 193 Gr. B8
SA 194 Gr. 8
316 SS
316 SS
SS
316 Ss
316 SS
316 SS
316 SS
Lead and SS
SS
316 SS
316 SS
NOTES
1. Consumable spare part
2. Repair spare part
3. Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. ANSI Pressure Class 900, 1500 and 2500 inlet ratings use 416 SS
8. Supplied as a bellows assembly
9. Material temperature range defined by temperature seen at inlet of valve
10. Temperature limit for 316 SS spring is +500°F (+260°C)
11. Temperatures above +650°F (+343°C), alloy steel nickel plated or Inconel® X750 supplied
12. Permitted by ASME Code Case 1750
13. Minimum temperature for Inconel® X750 springs is -320°F (-196°C)
14. Crosby may substitute 316 SS.
25
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
JOS-E, JBS-E AND JLT - VARIATIONS FROM STANDARD MATERIALS[9] (continued)
( ) ( ) H1
ASME SA216
Gr. WCB/WCC
Hastelloy® C
316 SS
316 SS
316L SS
Inconel® 625
Inconel® 625
316L SS
Hastelloy® C
Inconel® X750
Specify
Hastelloy® C
Hastelloy® C
ASTM A297
Gr. HE SST
416 SS(14)
SS
Chrome steel[5]
Hastelloy®
( ) ( ) H4
ASME SA 216
Gr. WCB/WCC
Hastelloy® C
Hastelloy® C
Monel®
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Inconel® X750
Specify
Hastelloy® C
Hastelloy® C
( ) ( ) H5
ASME SA494
Gr. CW-12MW
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Inconel® X750
Specify
Hastelloy® C
Hastelloy® C
( ) ( ) H6
ASME SA494
Gr. CW-12MW
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Inconel® X750
Specify
Hastelloy® C
Hastelloy® C
()()H
ASME SA494
Gr. CW-12MW
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Inconel® X750
Specify
Hastelloy® C
Hastelloy® C
Hastelloy® C
Monel®
Monel®
Chrome steel[6]
Hastelloy® C
Hastelloy® C
Hastelloy® C or Monel®
Chrome steel[6]
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C
Hastelloy® C or Monel®
Hastelloy® C or
or Nickel plated[11]
316 SS
ASME A494
Gr. CW-12MW
Inconel® X750
Hastelloy® C
ASME A494
Gr. CW-12MW
Inconel® X750
Hastelloy® C
ASME A494
Gr. CW-12MW
Hastelloy® C
Hastelloy® C
Hastelloy® C
316 SS
316 SS
316 SS
316 SS
CS
Lead and SS
SS
SS
CS
or Alloy steel[6]
316 SS
ASME SA216
Gr. WCB/WCC
ASME SA193
Gr. B7
ASME SA194
CL. 2H
Monel®
Monel®
Monel®
Monel®
Monel®
CS
Lead and SS
SS
SS
CS
316 SS
Monel®
Hastelloy® C
Hastelloy® C
Hastelloy® C
Monel®
Monel®
Monel®
Hastelloy® C
Lead and SS
SS
SS
Hastelloy® C
Monel®
Hastelloy® C
Hastelloy® C
Hastelloy® C
Monel®
Monel®
Monel®
Hastelloy® C
Lead and SS
SS
SS
Hastelloy® C
Monel®
Hastelloy® C
Hastelloy® C
Hastelloy® C
Monel®
Monel®
Monel®
Hastelloy® C
Lead and SS
SS
SS
Hastelloy® C
Monel®
No.
Part name
1
2
3
4
5
6C
6B
6A
8
9
10
11
12
Body
Nozzle
Nozzle ring[3]
Set screw[3]
Disc holder[2]
Bellows flange[2][8]
Bellows[2][8]
Bellows tailpiece[2][8]
Disc insert[1]
Retention clip[1][4]
O-ring[1]
O-ring retainer[2]
Retainer screws[2]
15
16
17
Guide[3]
Spindle[3]
Spindle cotter pin[1]
18
19
Spring[3]
Spring washer[3]
20
Bonnet
21
Bonnet stud
22
24
Bonnet stud nut
Adjusting bolt
or Alloy steel[5]
CS
ASME SA216
Gr. WCB/WCC
ASME SA193
Gr. B7
ASME SA194
CL. 2H
316 SS[6]
25
27
28
29
30
34
35
36
40
Adjusting bolt nut
Set screw gasket[1]
Guide gasket[2]
Tailpiece gasket[1]
Pipe plug (non-bellows)
Seal and wire
Seal clip (not shown)
Nameplate (not shown)
Threaded cap
41
Cap gasket[1]
NOTES
1. Consumable spare part
2. Repair spare part
3. Insurance spare part
4. Furnished with disc insert
5. Corrosion resistant coating
6. Crosby may upgrade to Inconel® X750
7. ANSI Pressure Class 900, 1500 and 2500 inlet ratings use 416 SS
8. Supplied as a bellows assembly
9. Material temperature range defined by temperature seen at inlet of valve
10. Temperature limit for 316 SS spring is +500°F (+260°C)
11. Temperatures above +650°F (+343°C), alloy steel nickel plated or Inconel® X750 supplied
12. Permitted by ASME Code Case 1750
13. Minimum temperature for Inconel® X750 springs is -320°F (-196°C)
14. Crosby may substitute 316 SS.
40
24
25
34
41
19
20
18
19
21
22
15
6C
6B
6A
8
5
3
4
34
Note: this vent must
remain open on
JBS-E and JLTJBS-E
construction
16
17
28
9
29
27
1
2
JBS-E
26
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Cap
Dog shaft
Lever nut
Lever nut
lockwasher
Packing gland sleeve
Spindle
Packing gland nut
Cap
Lever
Packing gland
Packing
Dog shaft
gasket
Seal and
wire
Cap plug
Threaded cap
Type A
Test rod
Cap gasket
Cap or cap
top
Cap plug
gasket
Type J
Packed lifting lever
Type D
(Top view of packing gland construction used for
special materials)
Spindle
Lever nut
Cap and test rod
Cap
Type B - threaded cap
Type E - packed lifting lever
Type H - bolted cap
Type K - threadedcap
Type M - bolted cap
Cap
Spindle
Cap stud
Lever
Lockwasher
Dog shaft bearing
Gasket
Dog shaft
O-ring
Cap
Cap stud nut
Dog
Type G
Valve spindle
Seal and wire
Bolted cap
Type L
Packed lifting lever
Type D
(top view)
Spindle nut
Cap
Cap top
Cotter pin
Forked lever
Cotter pin
Cotter pin
Cap top gasket
Spindle nut
Dog
Dog shaft
Cap
Pin
Spindle
Adjusting bolt
Cap set screw
Pin
Adjusting
bolt nut
Lever
Regular lifting lever
Cap gasket
Seal and
wire
Type C
Packed lifting lever
Type D
27
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
CAPS AND LIFTING LEVERS
Caps
Styles JOS-E/JBS-E/JLT pressure relief valves are furnished with a closed bonnet and screwed
cap over the adjusting bolt. The following types of top construction are available, except where
indicated otherwise:
Screwed cap (Type J) - where no lifting lever is required.
Bolted cap (Type L) - where no lifting lever is required. Available to special order.
Lifting levers
ASME Code Section VIII and Section XIII requires that a lifting lever must be supplied with the
valve when the service is: (1) air (2) water at the valve inlet that exceeds 140°F (60°C), excluding
overpressure or relief events or (3) steam.
Regular (Type C) - for steam and air service where the valve cap is not required to be tight on the
discharge side and where conditions dictate a requirement for periodic testing. Regular lifting
levers may be furnished with a supplementary gagging device on special order (designated as
Type T).
Packed (Type D) - For services where tightness on the discharge side is necessary and where
conditions dictate a requirement for periodic testing. Also recommended for hot water services.
ASME Code Section VIII and Section XIII requirements for lifting levers: The omission of the lifting
lever is permitted under Code Case 2203. However, Emerson requires that orders for relief valves
intended for steam, air or water over 140°F (60°C) without lifting levers must indicate that the valves
are specified in accordance with Code Case 2203. The buyer is responsible for obtaining jurisdictional
approval for use of this Code Case.
Test rods
Types K, E or M - valves with screwed caps, packed lifting levers or bolted caps can be fitted to
accommodate test rods which will hold the valve closed when the equipment on which they are
installed is hydrostatically tested.
Type J screwed cap changes to Type K with test rod. Type D packed lifting lever changes to Type E
with test rod.
Type L bolted cap changes to Type M with test rod.
Height restricted applications
For applications where there are height restrictions, cap Types A, B, G and H are available.
CAUTION
Test rods should never be tightened more than finger-tight as over-tightening may damage internal
parts. Also, a test rod should never be kept on the valve during operation of the equipment. During
normal operation the test rod is replaced with a cap plug and gasket to maintain tightness on the
discharge side.
28
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
CAP AND LEVER MATERIALS
Part name
Cap (A, J, K, D, E, L, M)
JOS/JBS-( )5,6,7
-55 to 1000°F
(-48.5 to 538°C)
CS
Standard material
JOS/JBS-( )4
-55 to 650°F
(-48.5 to 343°C)
316 SS
JOS/JBS-( )2
-450 to -55°F
(-268 to -48.5°C)
316 SS
( )( )M7,
M8 and
( ) ( )S, S6
316 SS
Variations from standard materials
( )( )S4
CS
Cap (C)
Cap top (D, E)
Cap set screw (C)
Cap stud
Cap stud nut
Lever (D, E)
Lever (C)
Forked lever (C)
Pin (lever, forked lever)
Cotter Pins
Lever nut (D, E)
Lever nut lockwasher
Spindle nut
Iron/steel
Steel
SS
Alloy steel
Steel
Steel
Malleable iron
Malleable iron
Steel
Steel
Steel
Steel
Steel
Iron/steel
316 SS
SS
304 SS
304 SS
Steel
Malleable iron
Malleable iron
Steel
Steel
Steel
Steel
Steel
316 SS
316 SS
SS
304 SS
304 SS
316 SS
316 SS
316 SS
SS
SS
316 SS
SS
316 SS
316 SS
316 SS
SS
304 SS
304 SS
316 SS
316 SS
316 SS
SS
SS
316 SS
SS
316 SS
Iron/steel
Steel
SS
Alloy steel
Steel
Steel
Malleable iron
Malleable iron
Steel
Steel
316 SS
Steel
316 SS
Steel
416 SS
416 SS
FKM
Steel
416 SS
416 SS
FKM
316 SS
316 SS
316 SS
316 SS
316 SS
316 SS
[2]
[2]
[2]
[2]
[2]
[2]
[2]
[2]
[2]
[2]
Dog
Dog shaft
Dog shaftbearing
Dog shaft bearing O-ring
Packing gland
Packing gland sleeve
Packing gland nut
Packing
Test rod (K, E, M)
Cap plug (K, E, M)
[2]
[2]
416 SS
416 SS
416 SS
416 SS
316 SS
316 SS
316 SS
PTFE
416 SS
316 SS
Gaskets
316SS
316SS
316SS
( )( )M and
( )( )M5[1], M6
Monel®
( )( )M4 and
( ) ( )H4[1]
CS
( )( )H and
( )( )H5[1], H6
Hastelloy® C
[3]
[3]
[3]
Monel®
Steel
Hastelloy® C
[3]
[3]
[3]
304 SS
304 SS
316 SS
Alloy steel
Steel
Steel
Hastelloy® C
Hastelloy® C
316 SS
[3]
[3]
[3]
[3]
[3]
[3]
[3]
[3]
[3]
SS
SS
SS
Monel®
Steel
316 SS
Steel
SS
316 SS
SS
Monel®
Monel®
Monel®
Monel®
Monel®
Hastelloy® C
Hastelloy® C
Hastelloy® C
[2]
[2]
[2]
[2]
[2]
[2]
[2]
[2]
316 SS
316 SS
316 SS
PTFE
416 SS
316 SS
316 SS
416 SS
Steel
PTFE
416 SS
416 SS
Monel®
Monel®
Monel®
PTFE
416 SS
Monel®
Monel®
416 SS
Steel
PTFE
416 SS
416 SS
Monel®
Monel®
Monel®
PTFE
416 SS
Hastelloy® C
316SS
316SS
Monel®
Monel®
Monel®
NOTES
1. Special material valves ( )( )M1 and ( )( )H1 use caps and lifting gear of standard materials.
2. Packing gland construction is standard for special material valves.
3. Type C cap not available in M4, M5, M6, M, H4, H5, H6 or H material options.
29
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
D ORIFICE, 0.110 sq.in. (71 sq.mm) API EFFECTIVE AREA
Valve series
JOS-E-
Valve size
Standard connections
Inlet X Orifice
ANSI flanges raised face
Inlet
Outlet
X Outlet
-450 to -76°F
(-268 to -60°C)
Maximum set pressure psig (barg)
Inlet
-75 to -21°F
-20 to +100°F
+650°F[1][6]
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][6])
Back press. limit at
+800°F
+1000°F
(+427°C)
(+538°C)
100°F psig (38°C barg)
JOS[2]
JBS/JDS[2]
15
1D2
150
150
285 (19.6)
125 (8.62)
285 (19.6)
230 (15.8)
25
1D2
300
150
550 (37.9)
285 (19.6)
285 (19.6)
230 (15.8)
35
1D2
300
150
740 (51.0)
550 (37.9)
285 (19.6)
230 (15.8)
JOS-H-EJOS-E-
45
1D2
600
150
1480 (102)
1100 (75.9)
285 (19.6)
230 (15.8)
55
1½ D2
900
300
2220 (153)
1650 (111)
600 (41.3)
600 (41.3)
JBS-E-
65
1½ D2
1500
300
3705 (255)
2745 (185)
600 (41.3)
600 (41.3)
JLTJOS-E-
75
16
1½ D3[5]
1D2
2500
150
300
150
6000 (413)
4575 (316)
125 (8.62)
80 (5.51)
740 (51.0)
285 (19.6)
600 (41.3)
230 (15.8)
JBS-E-
26
1D2
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
JDS-E-[6]
36
1D2
300
150
550 (37.9)
410 (28.2)
285 (19.6)
230 (15.8)
JLTJOS-E-
46
56
1D2
1½ D2
600
900
150
300
1100 (75.9)
1650 (111)
825 (56.8)
1235 (85.1)
285 (19.6)
600 (41.3)
230 (15.8)
600 (41.3)
JBS-E-
66
1½ D2
1500
300
2745 (185)
2055 (142)
600 (41.3)
600 (41.3)
JLTJOS-E-
76
1½ D3[5]
2500
300
4575 (316)
3430 (236)
740 (51.0)
600 (41.3)
37
1D2
300
150
510 (35.1)
215 (14.8)
290 (20)
230 (15.8)
600
150
1015 (70)
430 (29.6)
290 (20)
230 (15.8)
JBS-EJDS-E-
[6]
JLT[1]
JBS-EJLTJOS-E-
47
1D2
57
1½ D2
900
300
1525 (105)
650 (44.8)
600 (41.3)
600 (41.3)
JBS-E-
67
1½ D2
1500
300
2540 (175)
1080 (74.4)
600 (41.3)
600 (41.3)
JLTJOS-E-
77
14
1½ D3[5]
1D2
2500
150
300
150
4230 (291)
1800 (124)
275 (18.9)
750 (51.7)
275 (18.9)
600 (41.3)
230 (15.8)
JBS-E-
24
1D2
300
150
275 (18.9)
275 (18.9)
230 (15.8)
JLT-
34
1D2
300
150
720 (49.6)
275 (18.9)
230 (15.8)
1D2
1D2
600
150
150
150
1440 (99.3)
JOS-E-
44
12
275 (18.9)
275 (18.9)
275 (18.9)
230 (15.8)
230 (15.8)
JBS-E-
22
1D2
300
150
275 (18.9)
275 (18.9)
230 (15.8)
JLT-
32
1D2
300
150
720 (49.6)
275 (18.9)
230 (15.8)
42
1D2
600
150
1440 (99.3)
275 (18.9)
230 (15.8)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated valves
may be set below 15 psig.
4. Series designations: JLTJOS-E, JLTJDS-E and JLTJBS-E signify Series JOS-E, JDS-E and JBS-E with liquid trim
for liquid and gas service.
5. Optional 2½" outlet available. Contact the factory for dimensions.
6. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
10 psig (0.68 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
30
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
Type J
Type C
Type D
Type L
(Threaded Cap)
(Regular Lifting Lever) Also JOS-H-E
(Packed Lifting Lever)
(Bolted Cap)
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
4 ⅛ (105)
32, 34, 35, 36, 37
4 ⅛ (105)
42, 44, 45, 46, 47
4 ⅛ (105)
JOS-E-, JBS-E-, JLT55, 56, 57, 65, 66, 67
4 ⅛ (105)
5 ½ (140)
75, 76, 77[5]
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
4 ⅛ (105)
32, 34, 35, 36, 37
4 ⅛ (105)
42, 44, 45, 46, 47
4 ⅛ (105)
55, 56, 57, 65, 66, 67
4 ⅛ (105)
5 ½ (140)
75, 76, 77[5]
JDS-E
12, 14, 15, 22, 24, 25
4 ⅛ (105)
4 ⅛ (105)
32, 34, 35
42, 44, 45
4 ⅛ (105)
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
Valve (cap) type
length
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
4 ½ (114)
4 ½ (114)
4 ½ (114)
19/16 (40)
19/16 (40)
19/16 (40)
16 ¾ (426)
16 ¾ (426)
16 ¾ (426)
19 ¾ (502)
19 ¾ (502)
19 ¾ (502)
19 (483)
19 (483)
19 (483)
19 ½ (495)
19 ½ (495)
19 ½ (495)
36 (16)
36 (16)
36 (16)
5 ½ (140)
7 (178)
2 (51)
2 ½ (64)
17 ½ (445)
18 ¾ (477)
20 ½ (521)
21 ¾ (552)
19 ¾ (502)
21 (533)
20 ¼ (514)
21 ½ (546)
65 (29)
75 (34)
4 ½ (114)
4 ½ (114)
4 ½ (114)
5 ½ (140)
7 (178)
1 9/16 (40)
1 9/16 (40)
1 9/16 (40)
2 (51)
2 ½ (64)
16 ¾ (426)
16 ¾ (426)
16 ¾ (426)
17 ½ (445)
18 ¾ (477)
19 ¾ (502)
19 ¾ (502)
19 ¾ (502)
20 ½ (521)
21 ¾ (552)
19 (483)
19 (483)
19 (483)
19 ¾ (502)
21 (533)
19 ½ (495)
19 ½ (495)
19 ½ (495)
20 ¼ (514)
21 ½ (546)
36 (16)
36 (16)
36 (16)
65 (29)
75 (34)
4 ½ (114)
4 ½ (114)
4 ½ (114)
1 9/16 (40)
1 9/16 (40)
1 9/16 (40)
17 (432)
17 (432)
17 (432)
20 (508)
20 (508)
20 (508)
19 ¼ (489)
19 ¼ (489)
19 ¼ (489)
19 ¾ (502)
19 ¾ (502)
19 ¾ (502)
36.7 (17)
36.7 (17)
36.7 (17)
31
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
D Orifice, 0.110 sq.in. [71 sq.mm] API effective area
1000
900
800
16
700
600
36
46
25
500
Inlet temperature (°F)
47
37
26
400
15
300
35
45
200
100
44
34
14/24
0
-100
-200
12/22
-300
42
32
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500, CLASS 2500
D Orifice, 0.110 sq.in. [71 sq.mm] API effective area
1000
900
77
67
57
800
Inlet temperature (°F)
76
66
56
700
600
500
400
55
300
75
65
200
100
0
-100
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Set pressure (psig)
32
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
E ORIFICE, 0.196 sq.in. (126 sq.mm) API EFFECTIVE AREA
Standard connections
Valve series
JOS-E-
Valve size Inlet
ANSI flanges raised
X Orifice X
face
Outlet
Inlet
Outlet
15
1E2
150
25
1E2
35
Maximum set pressure psig (barg)
-450 to -76°F
-75 to -21°F
(-268 to -60°C)
(-59 to -30°C)
Inlet
-20 to +100°F
+650°F[1][6]
Back press. limit at
+800°F
+1000°F
(+427°C)
(+538°C)
100°F psig (38°C barg)
JOS[2]
JBS/JDS[2]
(-29 to +38°C)
(+343°C[1][6])
150
285 (19.6)
125 (8.62)
285 (19.6)
230 (15.8)
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
1E2
300
150
740 (51.0)
550 (37.9)
285 (19.6)
230 (15.8)
JOS-H-E-[1]
JOS-E-
45
1E2
600
150
1480 (102)
1100 (75.9)
285 (19.6)
230 (15.8)
55
1½ E2
900
300
2220 (153)
1650 (111)
600 (41.3)
600 (41.3)
JBS-E-
65
1½ E2
1500
300
3705 (255)
2745 (185)
600 (41.3)
600 (41.3)
JLTJOS-E-
75
16
1½ E3[5]
1E2
2500
150
300
150
6000 (413)
4575 (316)
125 (8.62)
80 (5.51)
740 (51.0)
285 (19.6)
600 (41.3)
230 (15.8)
JBS-E-
26
1E2
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
JDS-E-[6]
36
1E2
300
150
550 (37.9)
410 (28.2)
285 (19.6)
230 (15.8)
JLTJOS-E-
46
56
1E2
1½ E2
600
900
150
300
1100 (75.9)
1650 (111)
825 (56.8)
1235 (85.1)
285 (19.6)
600 (41.3)
230 (15.8)
600 (41.3)
JBS-E-
66
1½ E2
1500
300
2745 (185)
2055 (142)
600 (41.3)
600 (41.3)
JLTJOS-E-
76
1½ E3[5]
2500
300
4575 (316)
3430 (236)
740 (51.0)
600 (41.3)
37
1E2
300
150
510 (35.1)
215 (14.8)
290 (20)
230 (15.8)
47
1E2
600
150
1015 (70)
430 (29.6)
290 (20)
230 (15.8)
JBS-EJDS-E-
[6]
JLT-
JBS-EJLTJOS-E-
57
1½ E2
900
300
1525 (105)
650 (44.8)
600 (41.3)
600 (41.3)
JBS-E-
67
1½ E2
1500
300
2540 (175)
1080 (74.4)
600 (41.3)
600 (41.3)
JLT-
77
14
1½ E3[5]
1E2
2500
150
300
150
4230 (291)
1800 (124)
275 (18.9)
750 (51.7)
275 (18.9)
600 (41.3)
230 (15.8)
24
1E2
300
150
275 (18.9)
275 (18.9)
230 (15.8)
34
1E2
300
150
720 (49.6)
275 (18.9)
230 (15.8)
44
12
1E2
1E2
600
150
150
150
1440 (99.3)
275 (18.9)
275 (18.9)
275 (18.9)
230 (15.8)
230 (15.8)
22
1E2
300
150
275 (18.9)
275 (18.9)
230 (15.8)
32
1E2
300
150
720 (49.6)
275 (18.9)
230 (15.8)
42
1E2
600
150
1440 (99.3)
275 (18.9)
230 (15.8)
JOS-EJBS-EJLTJOS-EJBS-EJLT-
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated valves
may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Optional 2½" outlet available. Contact the factory for dimensions.
6. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
33
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
4 ⅛ (105)
32, 34, 35, 36, 37
42, 44, 45, 46, 47
JOS-E-, JBS-E-, JLT55, 56, 57, 65, 66, 67
75, 76, 77[5]
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
55, 56, 57, 65, 66, 67
75, 76, 77[5]
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
4 ½ (114)
19/16 (40)
4 ⅛ (105)
4 ⅛ (105)
4 ½ (114)
4 ½ (114)
19/16 (40)
19/16 (40)
16 ¾ (426)
16 ¾ (426)
16 ¾ (426)
19 ¾ (502)
19 ¾ (502)
19 ¾ (502)
19 (483)
19 (483)
19 (483)
19 ½ (495)
19 ½ (495)
19 ½ (495)
36 (16)
36 (16)
36 (16)
4 ⅛ (105)
5 ½ (140)
5 ½ (140)
7 (178)
2 (51)
2 ½ (64)
17 ½ (445)
18 ¾ (477)
20 ½ (521)
21 ¾ (552)
19 ¾ (502)
21 (533)
20 ¼ (514)
21 ½ (546)
65 (29)
75 (34)
4 ⅛ (105)
4 ⅛ (105)
4 ⅛ (105)
4 ⅛ (105)
5 ½ (140)
4 ½ (114)
4 ½ (114)
4 ½ (114)
5 ½ (140)
7 (178)
1 9/16 (40)
1 9/16 (40)
1 9/16 (40)
2 (51)
2 ½ (64)
16 ¾ (426)
16 ¾ (426)
16 ¾ (426)
17 ½ (445)
18 ¾ (477)
19 ¾ (502)
19 ¾ (502)
19 ¾ (502)
20 ½ (521)
21 ¾ (552)
19 (483)
19 (483)
19 (483)
19 ¾ (502)
21 (533)
19 ½ (495)
19 ½ (495)
19 ½ (495)
20 ¼ (514)
21 ½ (546)
36 (16)
36 (16)
36 (16)
65 (29)
75 (34)
4 ⅛ (105)
4 ⅛ (105)
4 ⅛ (105)
4 ½ (114)
4 ½ (114)
4 ½ (114)
1 9/16 (40)
1 9/16 (40)
1 9/16 (40)
17 (432)
17 (432)
17 (432)
20 (508)
20 (508)
20 (508)
19 ¼ (489)
19 ¼ (489)
19 ¼ (489)
19 ¾ (502)
19 ¾ (502)
19 ¾ (502)
36.7 (17)
36.7 (17)
36.7 (17)
34
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
E Orifice, 0.196 sq.in. (126 sq.mm) API effective area
1000
900
37
800
16
700
47
26
36
46
Inlet temperature (°F)
600
500
25
400
15
300
35
45
200
100
14/24
44
34
0
-100
-200
32
12/22
-300
42
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500, CLASS 2500
E Orifice, 0.196 sq.in. (126 sq.mm) API effective area
1000
900
57
67
77
800
Inlet temperature (°F)
66
56
700
76
600
500
400
55
65
75
300
200
100
0
-100
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Set pressure (psig)
35
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
F ORIFICE, 0.307 sq.in. (198 sq.mm) API EFFECTIVE AREA
Valve series
JOS-EJBS-EJDS-E-
[6]
JLTJOS-H-E-
[1]
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges
X Orifice X
Outlet
raised face
Inlet
Outlet
Inlet
-20 to +100°F
+650°F[1][6]
15
1½ F2
150
25
1½ F2
35
45
-450 to -76°F
-75 to -21°F
(-268 to -60°C)
(-59 to -30°C)
Back press. limit at
100°F psig
+800°F
+1000°F
(+427°C)
(+538°C)
(38°C barg)
JOS[2]
JBS/JDS[2]
(-29 to +38°C)
(+343°C[1][6])
150
285 (19.6)
125 (8.62)
285 (19.6)
230 (15.8)
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
1½ F2
300
150
740 (51.0)
550 (37.9)
285 (19.6)
230 (15.8)
1½ F2
600
150
1480 (102)
1100 (75.9)
285 (19.6)
230 (15.8)
JOS-E-
55
1½ F3
900
300
2220 (153)
1650 (111)
740 (51.0)
500 (34.4)
JBS-E-
65
1½ F3[5]
1500
300
3705 (255)
2745 (185)
740 (51.0)
500 (34.4)
JLT-
1½ F3[5]
1½ F2
2500
150
300
150
5000 (344)
JOS-E-
75
16
4575 (316)
125 (8.62)
80 (5.51)
740 (51.0)
285 (19.6)
500 (34.4)
230 (15.8)
JBS-E-
26
1½ F2
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
JDS-E-[6]
36
1½ F2
300
150
550 (37.9)
410 (28.2)
285 (19.6)
230 (15.8)
JLTJOS-E-
46
56
1½ F2
1½ F3[5]
600
900
150
300
1100 (75.9)
1650 (111)
825 (56.8)
1235 (85.1)
285 (19.6)
740 (51.0)
230 (15.8)
500 (34.4)
JBS-E-
66
1½ F3[5]
1500
300
2745 (185)
2055 (142)
740 (51.0)
500 (34.4)
JLT-
76
1½ F3[5]
2500
300
4575 (316)
3430 (236)
740 (51.0)
500 (34.4)
37
1½ F2
300
150
510 (35.1)
215 (14.8)
290 (20)
230 (15.8)
47
1½ F2
600
150
1015 (70)
430 (29.6)
290 (20)
230 (15.8)
JOS-E-
57
1½ F3[5]
900
300
1525 (105)
650 (44.8)
750 (51.7)
500 (34.4)
JBS-E-
67
1½ F3[5]
1500
300
2540 (175)
1080 (74.4)
750 (51.7)
500 (34.4)
JLT-
77
14
1½ F3[5]
1½ F2
2500
150
300
150
4230 (291)
1800 (124)
275 (18.9)
750 (51.7)
275 (18.9)
500 (34.4)
230 (15.8)
24
1½ F2
300
150
275 (18.9)
275 (18.9)
230 (15.8)
34
1½ F2
300
150
720 (49.6)
275 (18.9)
230 (15.8)
44
12
1½ F2
1½ F2
600
150
150
150
1440 (99.3)
275 (18.9)
275 (18.9)
275 (18.9)
230 (15.8)
230 (15.8)
22
1½ F2
300
150
275 (18.9)
275 (18.9)
230 (15.8)
32
1½ F2
300
150
720 (49.6)
275 (18.9)
230 (15.8)
42
1½ F2
600
150
1440 (99.3)
275 (18.9)
230 (15.8)
JOS-EJBS-EJLT-
JOS-EJBS-EJLTJOS-EJBS-EJLT-
[5]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Optional 2½ in. outlet available. Contact the factory for dimensions.
6. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
36
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
22 ½ (572)
22 ½ (572)
23 ¼ (591)
23 ¼ (591)
50 (23)
50 (23)
23 ¼ (591)
23 (584)
26 ¾ (679)
22 ½ (572)
21 ¼ (540)
26 (660)
23 ¼ (591)
21 ¾ (552)
26 ¾ (679)
50 (23)
65 (29)
85 (39)
21 1/12 (537)
21 1/12 (537)
21 1/12 (537)
20 ⅚ (530)
23 ⅚ (606)
24 1/12 (612)
24 1/12 (612)
24 1/12 (612)
23 ⅚ (606)
27 7/12 (701)
23 ⅓ (593)
23 ⅓ (593)
23 ⅓ (593)
22 1/12 (561)
20 ⅚ (530)
24 1/12 (612)
24 1/12 (612)
24 1/12 (612)
22 7/12 (574)
27 7/12 (701)
62.0 (29)
62.0 (29)
62.0 (29)
77.0 (35)
97.0 (44)
20 7⁄12 (522)
20 7⁄12 (522)
20 7⁄12 (522)
23 7⁄12 (599)
23 7⁄12 (599)
23 7⁄12 (599)
22 ⅚ (580)
22 ⅚ (580)
22 ⅚ (580)
23 7⁄12 (599)
23 7⁄12 (599)
23 7⁄12 (599)
51.2 (24)
51.2 (24)
51.2 (24)
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
4 ⅞ (124)
32, 34, 35, 36, 37
4 ⅞ (124)
4 ¾ (121)
6 (152)
1 ¾ (44)
1 ¾ (44)
20 ¼ (515)
20 ¼ (515)
23 ¼ (591)
23 ¼ (591)
42, 44, 45, 46, 47
55, 56, 57, 65, 66, 67
75, 76, 77[5]
4 ⅞ (124)
4 ⅞ (124)
5 ½ (140)
6 (152)
6 ½ (165)
7 (178)
1 ¾ (44)
2 (51)
2 ½ (64)
20 ¼ (515)
20 (508)
23 (584)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
5 ½ (140)
4 ¾ (121)
6 (152)
6 (152)
6 ½ (165)
7 (178)
1 ¾ (44)
1 ¾ (44)
1 ¾ (44)
2 (51)
2 ½ (64)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
4 ¾ (121)
6 (152)
6 (152)
1 ¾ (44)
1 ¾ (44)
1 ¾ (44)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
55, 56, 57, 65, 66, 67
75, 76, 77[5]
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
37
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
F Orifice, 0.307 sq.in. (198 sq.mm) API effective area
1000
900
37
800
26
16
700
47
46
36
Inlet temperature (°F)
600
500
25
400
15
300
35
45
200
100
34
14/24
44
0
-100
-200
12/22
42
32
-300
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500, CLASS 2500
F Orifice, 0.307 sq.in. (198 sq.mm) API effective area
1000
900
57
67
77
800
56
Inlet temperature (°F)
700
66
76
600
500
65
55
75
400
300
200
100
0
-100
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
Set pressure (psig)
38
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
G ORIFICE, 0.503 sq.in. (325 sq.mm) API EFFECTIVE AREA
Standard connections
Valve series
JOS-EJBS-EJDS-E-[6]
JLTJOS-H-E-[1]
JOS-EJBS-EJLTJOS-EJBS-EJDS-E-[6]
JLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
Valve size Inlet
ANSI flanges
X Orifice X
raised face
Inlet
Outlet
Outlet
-450 to -76°F
-75 to -21°F
(-268 to -60°C)
(-59 to -30°C)
Maximum set pressure psig (barg)
Inlet
-20 to +100°F
+650°F[1][6]
(-29 to +38°C)
(+343°C[1][6])
Back press. limit at
100°F psig
+800°F
+1000°F
(+427°C)
(+538°C)
(38°C barg)
JOS[2]
JBS/JDS[2]
15
25
35
45
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
150
300
300
600
150
150
150
150
285 (19.6)
285 (19.6)
740 (51.0)
1480 (102)
125 (8.62)
285 (19.6)
550 (37.9)
1100 (75.9)
285 (19.6)
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
55
65
75
16
26
36
46
56
66
76
1½ G3[5]
2G3
2G3
1½ G3[5]
300
300
300
150
150
150
150
300
300
300
2220 (153)
3705 (255)
3705 (255)
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
2G3
2G3
900
1500
2500
150
300
300
600
900
1500
2500
1650 (111)
2745 (185)
3705 (255)
125 (8.62)
285 (19.6)
550 (37.9)
1100 (75.9)
1650 (111)
2745 (185)
3705 (255)
740 (51.0)
740 (51.0)
740 (51.0)
285 (19.6)
285 (19.6)
285 (19.6)
285 (19.6)
740 (51.0)
740 (51.0)
740 (51.0)
470 (32.4)
470 (32.4)
470 (32.4)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
470 (32.4)
470 (32.4)
470 (32.4)
37
47
1½ G3[5]
1½ G3[5]
300
600
150
150
510 (35.1)
1015 (70)
215 (14.8)
430 (29.6)
290 (20)
290 (20)
230 (15.8)
230 (15.8)
57
67
77
14
24
34
44
12
22
32
42
1½ G3[5]
2G3
2G3
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
1½ G3[5]
900
1500
2500
150
300
300
600
150
300
300
600
300
300
300
150
150
150
150
150
150
150
150
1525 (105)
2540 (175)
3705 (256)
650 (44.8)
1080 (74.4)
1800 (124)
750 (51.7)
750 (51.7)
750 (51.7)
275 (18.9)
275 (18.9)
275 (18.9)
275 (18.9)
275 (18.9)
275 (18.9)
275 (18.9)
275 (18.9)
470 (32.4)
470 (32.4)
500 (32.4)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
230 (15.8)
80 (5.51)
285 (19.6)
410 (28.2)
825 (56.8)
1235 (85.1)
2055 (142)
3430 (236)
275 (18.9)
275 (18.9)
720 (49.6)
1440 (99.3)
275 (18.9)
275 (18.9)
720 (49.6)
1440 (99.3)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Optional 2½" outlet available. Contact the factory for dimensions.
6. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
39
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
12, 14, 15, 16, 22, 24, 25, 26[5]
32, 34, 35, 36, 37, 47[5]
42, 44, 45, 46[5]
55, 56, 57[5]
65, 66, 67, 75, 76, 77
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
55, 56, 57, 65, 66, 67
75, 76, 77[5]
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Center to face
Inlet
Outlet
A
B
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
6 ⅛ (155)
4 ¾ (121)
6 (152)
6 (152)
6 ½ (165)
6 ¾ (171)
1 ¾ (44)
1 ¾ (44)
1 ¾ (44)
2 (51)
2 ¾ (70)
20 ¼ (515)
20 ¼ (515)
20 ¼ (515)
22 ¼ (566)
23 ¼ (591)
23 ¼ (591)
23 ¼ (591)
23 ¼ (591)
26 (660)
27 (686)
22 ½ (572)
22 ½ (572)
22 ½ (572)
25 ¼ (641)
26 ¼ (667)
23 ¼ (591)
23 ¼ (591)
23 ¼ (591)
26 (660)
27 (686)
50 (23)
50 (23)
50 (23)
70 (32)
90 (41)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
6 ⅛ (155)
4 ¾ (121)
6 (152)
6 (152)
6 ½ (165)
6 ¾ (171)
1 ¾ (44)
1 ¾ (44)
1 ¾ (44)
2 (51)
2 ¾ (70)
21 1/12 (537)
21 1/12 (537)
21 1/12 (537)
23 1/12 (586)
24 1/12 (612)
24 1/12 (612)
24 1/12 (612)
24 1/12 (612)
26 ⅚ (682)
27 ⅚ (707)
23 ⅓ (593)
23 ⅓ (593)
23 ⅓ (593)
26 1/12 (663)
27 1/12 (688)
24 1/12 (612)
24 1/12 (612)
24 1/12 (612)
26 ⅚ (682)
27 ⅚ (707)
62.0 (29)
62.0 (29)
62.0 (29)
82.0 (38)
102.0 (47)
4 ⅞ (124)
4 ⅞ (124)
4 ⅞ (124)
4 ¾ (121)
6 (152)
6 (152)
1 ¾ (44)
1 ¾ (44)
1 ¾ (44)
20 7⁄12 (522)
20 7⁄12 (522)
20 7⁄12 (522)
23 7⁄12 (599)
23 7⁄12 (599)
23 7⁄12 (599)
22 ⅚ (580)
22 ⅚ (580)
22 ⅚ (580)
23 7⁄12 (599)
23 7⁄12 (599)
23 7⁄12 (599)
51.2 (24)
51.2 (24)
51.2 (24)
40
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
G Orifice, 0.503 sq.in. (325 sq.mm) API effective area
1000
900
47
37
800
16
700
26
36
46
600
Inlet temperature (°F)
500
25
400
45
15
300
35
200
100
34
14/24
0
44
-100
-200
12/22
-300
42
32
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500, CLASS 2500
G Orifice, 0.503 sq.in. (325 sq.mm) API effective area
1000
900
57
800
56
Inlet temperature (°F)
700
77
67
76
66
600
500
55
400
75
65
300
200
100
0
-100
0
500
1000
1500
2000
2500
3000
3500
4000
Set pressure (psig)
41
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
H ORIFICE, 0.785 sq.in. (506 sq.mm) API EFFECTIVE AREA
Valve series
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][5]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][5])
(+427°C)
(+538°C)
(38°C barg)
Inlet
15
1½ H3
150
150
285 (19.6)
125 (8.62)
285 (19.6)
230 (15.8)
25
1½ H3
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
35
2H3
300
150
740 (51.0)
550 (37.9)
285 (19.6)
230 (15.8)
45
2H3
600
150
1480 (102)
1100 (75.9)
285 (19.6)
230 (15.8)
55
2H3
900
150
2220 (153)
1650 (111)
285 (19.6)
230 (15.8)
65
2H3
1500
300
2750 (189)
2685 (185)
740 (51.0)
415 (28.6)
JOS-E-
16
1½ H3
150
150
125 (8.62)
80 (5.51)
285 (19.6)
230 (15.8)
JBS-E-
26
1½ H3
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
JDS-E-[5]
36
2H3
300
150
550 (37.9)
410 (28.2)
285 (19.6)
230 (15.8)
JLT-
46
2H3
600
150
1100 (75.9)
825 (56.8)
285 (19.6)
230 (15.8)
56
2H3
900
150
1610 (111)
1235 (85.1)
285 (19.6)
230 (15.8)
66
2H3
1500
300
2685 (185)
2055 (142)
740 (51.0)
415 (28.6)
37
2H3
300
150
510 (35.1)
215 (14.8)
290 (20)
230 (15.8)
47
2H3
600
150
1015 (70.0)
430 (29.6)
290 (20)
230 (15.8)
57
2H3
900
150
1525 (105.1)
650 (44.8)
290 (20)
230 (15.8)
67
2H3
1500
300
2540 (175.1)
1080 (74.4)
750 (51.7)
415 (28.6)
14
1½ H3
150
150
275 (18.9)
275 (18.9)
230 (15.8)
24
1½ H3
300
150
275 (18.9)
275 (18.9)
230 (15.8)
34
2H3
300
150
720 (49.6)
275 (18.9)
230 (15.8)
44
2H3
600
150
1440 (99.3)
275 (18.9)
230 (15.8)
12
1½ H3
150
150
275 (18.9)
275 (18.9)
230 (15.8)
22
1½ H3
300
150
275 (18.9)
275 (18.9)
230 (15.8)
32
2H3
300
150
720 (49.6)
275 (18.9)
230 (15.8)
42
2H3
600
150
1440 (99.3)
275 (18.9)
230 (15.8)
JBS-EJDS-E-
[5]
JLTJOS-H-E-
[1]
JOS-EJBS-EJLT-
JOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
JOS[2]
JBS/JDS[2]
Outlet
JOS-E-
Outlet
Back press. limit at
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
42
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
5 ⅛ (130)
32, 34, 35, 36, 37, 47
5 ⅛ (130)
42, 44, 45, 46
6 1/16 (154)
55, 56, 57, 65, 66, 67
6 1/16 (154)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
55, 56, 57, 65, 66, 67
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
4 ⅞ (124)
4 ⅞ (124)
6 ⅜ (162)
6 ⅜ (162)
111/16 (43)
113/16 (46)
113/16 (46)
2 5/16 (59)
20 ½ (521)
20 ½ (521)
23 (585)
24 ½ (623)
23 ½ (597)
23 ½ (597)
26 ¾ (679)
28 ¼ (718)
22 ¾ (578)
22 ¾ (578)
26 (660)
27 ½ (699)
23 ¼ (591)
23 ¼ (591)
26 ¾ (679)
28 ¼ (718)
55 (25)
60 (27)
75 (34)
100 (50)
5 ⅛ (130)
5 ⅛ (130)
6 1/16 (154)
6 1/16 (154)
4 ⅞ (124)
4 ⅞ (124)
6 ⅜ (162)
6 ⅜ (162)
111/16 (43)
113/16 (46)
113/16 (46)
2 5/16 (59)
21 ½ (547)
21 ½ (547)
24 (610)
25 ½ (648)
24 ½(623)
24 ½(623)
27 ¾ (705)
29 ¼ (743)
23 ¾ (604)
23 ¾ (604)
27 (586)
28 ½ (724)
24 ¼ (616)
24 ¼ (616)
27 ¾ (705)
29 ¼ (743)
67.0 (31)
72.0 (33)
87.0 (40)
112.0 (51)
5 ⅛ (130)
5 ⅛ (130)
6 1/16 (154)
4 ⅞ (124)
4 ⅞ (124)
6 ⅜ (162)
1 11/16 (43)
1 13/16 (46)
1 13/16 (46)
20 5/6 (530)
20 5/6 (530)
23 ⅓ (592)
23 5/6 (606)
23 5/6 (606)
27 1/12 (688)
23 1/12 (587)
23 1/12 (587)
26 ⅓ (669)
23 7/12 (580)
23 7/12 (580)
27 1/12 (688)
56.7 (26)
61.7 (28)
76.7 (35)
43
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
H Orifice, 0.785 sq.in. (506 sq.mm) API effective area
1000
900
37
800
16
700
26
47
46
36
600
Inlet temperature (°F)
500
25
400
45
15
300
35
200
100
14/24
44
34
0
-100
-200
12/22
-300
42
32
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500
H Orifice, 0.785 sq.in. (506 sq.mm) API effective area
1000
900
57
67
800
56
Inlet temperature (°F)
700
66
600
500
400
65
55
300
200
100
0
-100
0
500
1000
1500
2000
2500
3000
Set pressure (psig)
44
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
J ORIFICE, 1.287 sq.in. (830 sq.mm) API EFFECTIVE AREA
Valve series
JOS-E-
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Outlet
Inlet
Outlet
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][6]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][6])
(+427°C)
(+538°C)
(38°C barg)
JOS[2]
JBS/JDS[2]
15
2J3
150
150
285 (19.6)
125 (8.62)
285 (19.6)
230 (15.8)
25
2J3
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
35
3J4[5]
300
150
740 (51.0)
550 (37.9)
285 (19.6)
230 (15.8)
45
3J4[5]
600
150
1480 (102)
1100 (75.9)
285 (19.6)
230 (15.8)
55
3J4
900
150
2220 (153)
1650 (111)
285 (19.6)
230 (15.8)
65
3J4
1500
300
2700 (186)
2685 (185)
600 (41.3)
230 (15.8)
JOS-E-
16
2J3
150
150
125 (8.62)
80 (5.51)
285 (19.6)
230 (15.8)
JBS-E-
26
2J3
300
150
285 (19.6)
285 (19.6)
285 (19.6)
230 (15.8)
JDS-E-[6]
36
3J4[5]
300
150
550 (37.9)
410 (28.2)
285 (19.6)
230 (15.8)
JLT-
46
3J4[5]
600
150
1100 (75.9)
825 (56.8)
285 (19.6)
230 (15.8)
56
3J4
900
150
1610 (111)
1235 (85.1)
285 (19.6)
230 (15.8)
66
3J4
1500
300
2685 (186)
2055 (142)
600 (41.3)
230 (15.8)
JBS-EJDS-E-
[6]
JLTJOS-H-E-
[1]
JOS-EJBS-EJLT-
JOS-EJBS-E-[5]
JLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
37
3J4[5]
300
150
510 (35.1)
215 (14.8)
290 (20)
230 (15.8)
47
3J4
600
150
1015 (70.0)
430 (29.6)
290 (20)
230 (15.8)
57
3J4[5]
900
150
1525 (105.1)
650 (44.8)
290 (20)
230 (15.8)
67
3J4
1500
300
2540 (175.1)
1080 (74.4)
600 (41.3)
230 (15.8)
14
2J3
150
150
275 (18.9)
275 (18.9)
230 (15.8)
24
2J3
300
150
275 (18.9)
275 (18.9)
230 (15.8)
34
3J4[5]
300
150
720 (49.6)
275 (18.9)
230 (15.8)
44
3J4[5]
600
150
1440 (99.3)
275 (18.9)
230 (15.8)
12
2J3
150
150
275 (18.9)
275 (18.9)
230 (15.8)
22
2J3
300
150
275 (18.9)
275 (18.9)
230 (15.8)
32
3J4[5]
300
150
500 (34.4)
275 (18.9)
230 (15.8)
42
3J4[5]
600
150
625 (43.1)
275 (18.9)
230 (15.8)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Optional 2½" inlet available. Contact the factory for dimensions.
6. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
45
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
5 ⅜ (137)
32, 34, 35, 36,37, 47
7 ¼ (184)
42, 44, 45, 46
7 ¼ (184)
57
7 ¼ (184)
55, 56, 65, 66, 67
7 ¼ (184)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37, 47
42, 44, 45, 46
57
55, 56, 57, 65, 66, 67
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
4 ⅞ (124)
7 ⅛ (181)
7 ⅛ (181)
7 ⅛ (181)
7 ⅛ (181)
111/16 (43)
2 ¼ (57)
2 ¼ (57)
2 11/16 (68)
2 11/16 (68)
20 ¾ (527)
24 ⅝ (632)
26 ⅞ (683)
26 ⅝ (683)
28 ¾ (826)
23 ¾ (603)
28 ⅝ (727)
30 ⅝ (773)
30 ⅝ (773)
32 ½ (826)
23 ¼ (591)
27 ⅞ (703)
29 ⅞ (759)
29 ⅞ (759)
31 ¾ (806)
23 ¾ (603)
28 ⅝ (727)
30 ⅝ (778)
30 ⅝ (778)
32 ½ (826)
66 (30)
100 (45)
128 (57)
151 (68)
155 (70)
5 ⅜ (137)
7 ¼ (184)
7 ¼ (184)
7 ¼ (184)
7 ¼ (184)
4 ⅞ (124)
7 ⅛ (181)
7 ⅛ (181)
7 ⅛ (181)
7 ⅛ (181)
1 11/16 (43)
2 ¼ (57)
2 ¼ (57)
2 11/16 (68)
2 11/16 (68)
21 ¾ (553)
25 ⅝ (651)
27 ⅞ (709)
27 ⅞ (709)
29 ¾ (749)
24 ¾ (629)
29 ⅝ (753)
31 ⅝ (804)
31 ⅝ (804)
33 ½ (851)
24 ¼ (616)
28 ⅞ (734)
30 ⅞ (785)
30 ⅞ (785)
32 ¾ (832)
24 ¾ (629)
29 ⅝ (753)
31 ⅝ (804)
31 ⅝ (804)
33 ½ (851)
81.0 (37)
115.0 (53)
143.0 (65)
166.0 (76)
170.0 (78)
5 ⅜ (137)
7 ¼ (184)
7 ¼ (184)
4 ⅞ (124)
7 ⅛ (181)
7 ⅛ (181)
1 11/16 (43)
2 ¼ (57)
2 ¼ (57)
21 ¼ (540)
25 ⅛ (639)
27 ⅜ (696)
24 ¼ (616)
29 ⅛ (740)
31 ⅛ (791)
23 ¾ (604)
28 ⅜ (721)
30 ⅜ (772)
24 ¼ (616)
29 ⅛ (740)
31 ⅛ (791)
68.8 (32)
102.8 (47)
130.8 (60)
46
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
J Orifice, 1.287 sq.in. (830 sq.mm) API effective area
1000
900
47
37
800
16
700
26
46
36
Inlet temperature (°F)
600
500
25
400
45
15
300
35
200
100
14/24
0
44
34
-100
-200
12/22
-300
42
32
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500
J Orifice, 1.287 sq.in. (830 sq.mm) API effective area
1000
900
57
67
800
Inlet temperature (°F)
66
56
700
600
500
55
400
65
300
200
100
0
-100
0
500
1000
1500
2000
2500
3000
Set pressure (psig)
47
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
K ORIFICE, 1.838 sq.in. (1186 sq.mm) API EFFECTIVE AREA
Valve series
JOS-E-
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Outlet
Inlet
Outlet
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][5]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][5])
(+427°C)
(+538°C)
(38°C barg)
JOS[2]
JBS/JDS[2]
15
3K4
150
150
285 (19.6)
125 (8.62)
285 (19.6)
150 (10.3)
25
3K4
300
150
285 (19.6)
285 (19.6)
285 (19.6)
150 (10.3)
35
3K4
300
150
740 (51.0)
550 (37.9)
285 (19.6)
150 (10.3)
45
3K4
600
150
1480 (102)
1100 (75.9)
285 (19.6)
200 (13.7)
55
3K6
900
150
2220 (153)
1610 (111)
285 (19.6)
200 (13.7)
65
3K6
1500
300
2220 (153)
2220 (153)
600 (41.3)
200 (13.7)
JOS-E-
16
3K4
150
150
125 (8.62)
80 (5.51)
285 (19.6)
150 (10.3)
JBS-E-
26
3K4
300
150
285 (19.6)
285 (19.6)
285 (19.6)
150 (10.3)
JDS-E-[5]
36
3K4
300
150
550 (37.9)
410 (28.2)
285 (19.6)
150 (10.3)
JLT-
46
3K4
600
150
1100 (75.9)
825 (56.8)
285 (19.6)
200 (13.7)
56
3K6
900
150
1610 (127)
1235 (85.1)
285 (19.6)
200 (13.7)
66
3K6
1500
300
2220 (153)
2055 (142)
600 (41.3)
200 (13.7)
37
3K4
300
150
510 (35.1)
215 (14.8)
290 (20)
150 (10.3)
47
3K4
600
150
1015 (70.0)
430 (29.6)
290 (20)
200 (13.7)
57
3K6
900
150
1525 (105.1)
650 (44.8)
290 (20)
200 (13.7)
67
3K6
1500
300
2220 (153)
1080 (74.4)
600 (41.3)
200 (13.7)
14
3K4
150
150
275 (18.9)
275 (18.9)
150 (10.3)
24
3K4
300
150
275 (18.9)
275 (18.9)
150 (10.3)
34
3K4
300
150
720 (49.6)
275 (18.9)
150 (10.3)
44
3K4
600
150
1440 (99.3)
275 (18.9)
200 (13.7)
12
3K4
150
150
275 (18.9)
275 (18.9)
150 (10.3)
22
3K4
300
150
275 (18.9)
275 (18.9)
150 (10.3)
32
3K4
300
150
525 (36.2)
275 (18.9)
150 (10.3)
42
3K4
600
150
600 (41.3)
275 (18.9)
200 (13.7)
JBS-EJDS-E-
[5]
JLTJOS-H-E-
[1]
JOS-EJBS-EJLT-
JOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
48
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E6 ⅛ (156)
12, 14, 15, 16, 22, 24, 25, 26
6 ⅛ (156)
32, 34, 35, 36, 37, 47
7 ¼ (184)
42, 44, 45, 46
7 13/16 (198)
55, 56, 57
65, 66, 67
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37, 47
42, 44, 45, 46
55, 56, 57
65, 66, 67
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
6 ⅜ (162)
2 ⅛ (54)
26 (661)
29 ¾ (756)
29 (737)
29 ¾ (756)
116 (52)
6 ⅜ (162)
7 ⅛ (181)
2 ⅛ (54)
2 ⅛ (54)
26 (661)
29 ¼ (743)
29 ¾ (756)
33 (838)
29 (737)
32 ½ (826)
29 ¾ (756)
33 ¼ (845)
117 (53)
160 (73)
7 ¾ (197)
8 ½ (216)
8 ½ (216)
2 11/16 (68)
2 11/16 (68)
33 ½ (851)
33 ½ (851)
39 (991)
39 (991)
38 (965)
38 (965)
38 ¾ (984)
38 ¾ (984)
185 (84)
195 (88)
6 ⅛ (156)
6 ⅛ (156)
7 ¼ (184)
7 13/16 (198)
7 ¾ (197)
6 ⅜ (162)
6 ⅜ (162)
7 ⅛ (181)
8 ½ (216)
8 ½ (216)
2 ⅛ (54)
2 ⅛ (54)
2 ⅛ (54)
2 11/16 (68)
2 11/16 (68)
27 ¼ (693)
27 ¼ (693)
30 ½ (775)
34 ¾(883)
34 ¾(883)
31 (788)
31 (788)
34 ¼ (870)
40 ¼ (1023)
40 ¼ (1023)
30 ¼ (794)
30 ¼ (794)
33 ¾ (858)
39 ¼(997)
39 ¼(997)
31 (788)
31 (788)
34 ½ (877)
40 (1017)
40 (1017)
135.0 (62)
136.0 (62)
179.0 (82)
204.0 (93)
214.0 (98)
6 ⅛ (156)
6 ⅛ (156)
7 ¼ (184)
6 ⅜ (162)
6 ⅜ (162)
7 ⅛ (181)
2 ⅛ (54)
2 ⅛ (54)
2 ⅛ (54)
26 ⅔ (697)
26 ⅔ (697)
29 11/12 (760)
30 5/12 (773)
30 5/12 (773)
33 ⅔ (856)
29 ⅔ (754)
29 ⅔ (754)
33 ⅙ (843)
30 5/12 (773)
30 5/12 (773)
32 11/12 (861)
121.0 (55)
122 (56)
165 (75)
49
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART - TO ANSI CLASS 600
K Orifice, 1.838 sq.in. (1186 sq.mm) API effective area
1000
900
37
800
16
700
26
46
36
600
25
500
Inlet temperature (°F)
47
400
45
35
15
300
200
100
14/24
0
44
34
-100
-200
32
12/22
-300
42
-400
-500
0
200
400
600
800
1000
1200
1400
Set pressure (psig)
PRESSURE/TEMPERATURE LIMIT CHART - ANSI CLASS 900, CLASS 1500
K Orifice, 1.838 sq.in. (1186 sq.mm) API effective area
1000
900
57
67
800
Inlet temperature (°F)
66
56
700
600
500
65
400
55
300
200
100
0
-100
0
500
1000
1500
2000
Set pressure (psig)
50
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
L ORIFICE, 2.853 sq.in. (1841 sq.mm) API EFFECTIVE AREA
Valve series
JOS-E-
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges
Inlet
X Orifice X
raised face
Outlet
Inlet
Outlet
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][5]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][5])
(+427°C)
(+538°C)
(38°C barg)
JOS[2]
JBS/JDS[2]
15
3L4
150
150
285 (19.6)
125 (8.62)
285 (19.6)
100 (6.89)
25
3L4
300
150
285 (19.6)
285 (19.6)
285 (19.6)
100 (6.89)
35
4L6
300
150
740 (51.0)
550 (37.9)
285 (19.6)
170 (11.7)
45
4L6
600
150
1000 (68.9)
1000 (68.9)
285 (19.6)
170 (11.7)
55
4L6
900
150
1500 (103)
1500 (103)
285 (19.6)
170 (11.7)
JOS-E-
16
3L4
150
150
125 (8.62)
80 (5.51)
285 (19.6)
100 (6.89)
JBS-E-
26
3L4
300
150
285 (19.6)
285 (19.6)
285 (19.6)
100 (6.89)
JDS-E-[5]
36
4L6
300
150
550 (37.9)
410 (28.2)
285 (19.6)
170 (11.7)
JLT-
46
4L6
600
150
1000 (68.9)
825 (56.8)
285 (19.6)
170 (11.7)
56
4L6
900
150
1500 (103)
1235 (85.1)
285 (19.6)
170 (11.7)
66
4L6
1500
150
1500 (103)
1500 (103)
285 (19.6)
170 (11.7)
37
4L6
300
150
510 (35.1)
215 (14.8)
290 (20)
170 (11.7)
47
4L6
600
150
1000 (68.9)
430 (29.6)
290 (20)
170 (11.7)
57
4L6
900
150
1500 (103)
650 (44.8)
290 (20)
170 (11.7)
67
4L6
1500
150
1500 (103)
1080 (74.4)
290 (20)
170 (11.7)
14
3L4
150
150
275 (18.9)
275 (18.9)
100 (6.89)
24
3L4
300
150
275 (18.9)
275 (18.9)
100 (6.89)
34
4L6
300
150
720 (49.6)
275 (18.9)
170 (11.7)
44
4L6
600
150
1000 (68.9)
275 (18.9)
170 (11.7)
JOS-E-
12
3L4
150
150
275 (18.9)
275 (18.9)
100 (6.89)
JBS-E-
22
3L4
300
150
275 (18.9)
275 (18.9)
100 (6.89)
JLT-
32
4L6
300
150
535 (36.8)
275 (18.9)
170 (11.7)
42
4L6
600
150
535 (36.8)
275 (18.9)
170 (11.7)
JBS-EJDS-E-[5]
JLTJOS-H-E-[1]
JOS-EJBS-EJLT-
JOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
6 psig (0.41 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
51
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
6 ⅛ (156)
32, 34, 35, 36, 37
7 1/16 (179)
42, 44, 45, 46, 47
7 1/16 (179)
55, 56, 57, 66, 67
7 ¾ (197)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
56, 57
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
6 ½ (165)
7 ⅛ (181)
8 (203)
8 ¾ (222)
2 (51)
2 ⅛ (54)
2 ⅜ (60)
2 15/16 (75)
30 ¼ (769)
30 ¼ (769)
31 ½ (801)
34 ¼ (871)
34 (864)
34 (864)
35 ¼ (895)
39 ¾ (1010)
33 ¼ (845)
34 ¼ (870)
34 ¾ (883)
38 ¾ (984)
34 (864)
34 ¼ (870)
35 ¼ (895)
39 ½ (1003)
152 (69)
192 (87)
226 (103)
270 (122)
6 ⅛ (156)
7 1/16 (179)
7 1/16 (179)
7 ¾ (197)
6 ½ (165)
7 ⅛ (181)
8 (203)
8 ¾ (222)
2 (51)
2 ⅛ (54)
2 ⅜ (60)
2 15/16 (75)
31 ⅛ (791)
31 ⅛ (791)
32 ⅜ (823)
35 ⅛ (893)
34 ⅞ (886)
34 ⅞ (886)
36 ⅛ (918)
40 ⅝ (1031)
34 ⅛ (867)
35 ⅛ (893)
35 ⅝ (905)
39 ⅝ (1007)
34 ⅞ (896)
35 ⅛ (893)
36 ⅛ (918)
40 ⅜(1026)
172.0 (79)
212.0 (97)
246.0 (112)
290.0 (132)
6 ⅛ (156)
7 1/16 (179)
7 1/16 (179)
6 ½ (165)
7 ⅛ (181)
8 (203)
2 (51)
2 ⅛ (54)
2 ⅜ (60)
31 ½ (801)
31 ½ (801)
32 ¾ (832)
35 ¼ (896)
35 ¼ (896)
36 ½ (928)
34 ½ (877)
35 ½ (902)
36 (915)
35 ¼ (896)
35 ½ (902)
36 ½ (928)
162.8 (74)
202.8 (92)
236.8 (108)
52
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
L Orifice, 2.853 sq.in. [1841 sq.mm] API effective area
1000
900
37
800
16
700
47
26
36
57
46
66
56
600
Inlet temperature (°F)
500
25
400
300
15
200
100
34
14/24
0
45
35
55
44
-100
-200
12/22
-300
32/42
-400
-500
0
200
400
600
800
1000
1200
1400
1600
Set pressure (psig)
53
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
M ORIFICE, 3.60 sq.in. (2323 sq.mm) API EFFECTIVE AREA
Valve series
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][5]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][5])
(+427°C)
(+538°C)
(38°C barg)
Inlet
Outlet
15
4M6
150
150
285 (19.6)
125 (8.62)
285 (19.6)
25
4M6
300
150
285 (19.6)
285 (19.6)
285 (19.6)
80 (5.51)
35
4M6
300
150
740 (51.0)
550 (37.9)
285 (19.6)
160 (11.0)
45
4M6
600
150
1100 (75.8)
1100 (75.9)
285 (19.6)
160 (11.0)
JOS-E-
16
4M6
150
150
125 (8.62)
80 (5.51)
285 (19.6)
80 (5.51)
JBS-E-
26
4M6
300
150
285 (19.6)
285 (19.6)
285 (19.6)
80 (5.51)
JDS-E-[5]
36
4M6
300
150
550 (37.9)
410 (28.2)
285 (19.6)
160 (11.0)
JLT-
46
4M6
600
150
1100 (75.9)
825 (56.8)
285 (19.6)
160 (11.0)
56
4M6
900
150
1100 (75.8)
1100 (75.8)
285 (19.6)
160 (11.0)
37
4M6
300
150
510 (35.1)
215 (14.8)
290 (20)
160 (11.0)
47
4M6
600
150
1000 (69.0)
430 (29.6)
290 (20)
160 (11.0)
57
4M6
900
150
1100 (75.8)
650 (44.8)
290 (20)
160 (11.0)
14
4M6
150
150
275 (18.9)
275 (18.9)
80 (5.51)
24
4M6
300
150
275 (18.9)
275 (18.9)
80 (5.51)
34
4M6
300
150
720 (49.6)
275 (18.9)
160 (11.0)
1100 (75.8)
JBS-EJDS-E-
[5]
JLTJOS-H-E-[1]
JOS[2]
JBS/JDS[2]
Outlet
JOS-E-
80 (5.51)
JOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
44
4M6
600
150
275 (18.9)
160 (11.0)
12
4M6
150
150
275 (18.9)
275 (18.9)
80 (5.51)
22
4M6
300
150
275 (18.9)
275 (18.9)
80 (5.51)
32
4M6
300
150
525 (36.2)
275 (18.9)
160 (11.0)
42
4M6
600
150
600 (41.3)
275 (18.9)
160 (11.0)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
54
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
7 (178)
32, 34, 35, 36, 37
7 (178)
42, 44, 45, 46, 47
7 (178)
56, 57
7 ¾ (197)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
56, 57
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
A and G
J and L
D
C
D
Approx. weight
lbs (kg)
Type J
7 ¼ (184)
7 ¼ (184)
8 (203)
8 ¾ (222)
2 ⅛ (54)
2 ⅛ (54)
2 7/16 (62)
2 9/16 (65)
29 ¾ (756)
32 ¼ (820)
36 ½ (925)
37 ¼ (947)
33 ½ (851)
36 (914)
42 (1067)
42 ¾ (1086)
33 (838)
35 ½ (902)
41 (1041)
41 ¾ (1060)
33 ¾ (857)
36 (914)
41 ¾ (1060)
42 ½(1080)
201 (91)
222 (101)
265 (120)
290 (132)
7 (178)
7 (178)
7 (178)
7 ¾ (197)
7 ¼ (184)
7 ¼ (184)
8 (203)
8 ¾ (222)
2 ⅛ (54)
2 ⅛ (54)
2 7/16 (62)
2 9/16 (65)
30
33
37
38
⅝ (778)
⅛ (841)
⅜ (950)
⅛ (969)
34 ⅜ (874)
36 ⅞ (937)
42 ⅞ (1090)
43 ⅝ (1109)
33 ⅞ (861)
36 ⅜ (924)
41 ⅞ (1064)
42 ⅝ (1083)
34 ⅝ (880)
36 ⅞ (937)
42 ⅝ (1083)
43 ⅜(1102)
221.0 (101)
242.0 (110)
285.0 (130)
310.0 (141)
7 (178)
7 (178)
7 (178)
7 ¼ (184)
7 ¼ (184)
8 (203)
2 ⅛ (54)
2 ⅛ (54)
2 7/16 (62)
31 ¼ (794)
33 ¾ (858)
38 (966)
35 (889)
37 ½ (953)
43 ½ (1105)
34 ½ (877)
37 (940)
42 ½ (1080)
35 ¼ (896)
37 ½ (953)
43 ¼ (1099)
215.9 (98)
236.9 (108)
279.9 (127)
55
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
M Orifice, 3.60 sq.in. (2323 sq.mm) API effective area
1000
37
900
800
16
700
57
47
36
26
56
46
600
Inlet temperature (°F)
500
25
400
45
35
15
300
200
100
14/24
34
0
44
-100
-200
12/22
-300
32
42
-400
-500
0
200
400
600
800
1000
1200
Set pressure (psig)
56
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
N ORIFICE, 4.34 sq.in. (2800 sq.mm) API EFFECTIVE AREA
Valve series
JOS-EJBS-EJDS-E-[5]
JLT-
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][5]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1][5])
(+427°C)
(+538°C)
(38°C barg)
JOS[2]
JBS/JDS[2]
Outlet
Inlet
Outlet
15
4N6
150
150
285 (19.6)
125 (8.62)
285 (19.6)
25
4N6
300
150
285 (19.6)
285 (19.6)
285 (19.6)
80 (5.51)
35
4N6
300
150
740 (51.0)
550 (37.9)
285 (19.6)
160 (11.0)
1000 (68.9)
1000 (68.9)
80 (5.51)
45
4N6
600
150
285 (19.6)
160 (11.0)
JOS-E-
16
4N6
150
150
125 (8.62)
80 (5.51)
285 (19.6)
80 (5.51)
JBS-E-
26
4N6
300
150
285 (19.6)
285 (19.6)
285 (19.6)
80 (5.51)
JDS-E-[5]
36
4N6
300
150
550 (37.9)
410 (28.2)
285 (19.6)
160 (11.0)
JLT-
46
4N6
600
150
1000 (68.9)
825 (56.8)
285 (19.6)
160 (11.0)
37
4N6
300
150
510 (35.1)
215 (14.8)
290 (20)
160 (11.0)
47
4N6
600
150
1000 (68.9)
430 (29.6)
290 (20)
160 (11.0)
14
4N6
150
150
275 (18.9)
275 (18.9)
80 (5.51)
24
4N6
300
150
275 (18.9)
275 (18.9)
80 (5.51)
34
4N6
300
150
720 (49.6)
275 (18.9)
160 (11.0)
44
4N6
600
150
275 (18.9)
160 (11.0)
12
4N6
150
150
275 (18.9)
275 (18.9)
80 (5.51)
22
4N6
300
150
275 (18.9)
275 (18.9)
80 (5.51)
32
4N6
300
150
450 (31.0)
275 (18.9)
160 (11.0)
42
4N6
600
150
500 (34.4)
275 (18.9)
160 (11.0)
JOS-H-E-[1]
JOS-EJBS-EJLTJOS-EJBS-EJLTJOS-EJBS-EJLT-
1000 (68.9)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
57
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
7 ¾ (197)
32, 34, 35, 36, 37
7 ¾ (197)
42, 44, 45, 46, 47
7 ¾ (197)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
A and G
J and L
D
C
D
Approx. weight
lbs (kg)
Type J
8 ¼ (210)
8 ¼ (210)
8 ¾ (222)
2 ⅛ (54)
2 ⅛ (54)
2 ⅜ (60)
37 ¾ (959)
37 ¾ (959)
37 ¾ (959)
43 ¼ (1099)
43 ¼ (1099)
43 ¼ (1099)
42 ¼ (1073)
42 ¼ (1073)
42 ¼ (1073)
43 (1092)
43 (1092)
43 (1092)
260 (118)
280 (127)
297 (135)
7 ¾ (197)
7 ¾ (197)
7 ¾ (197)
8 ¼ (210)
8 ¼ (210)
8 ¾ (222)
2 ⅛ (54)
2 ⅛ (54)
2 ⅜ (60)
38 ¾ (985)
38 ¾ (985)
38 ¾ (985)
44 ¼ (1124)
44 ¼ (1124)
44 ¼ (1124)
43 ¼ (1099)
43 ¼ (1099)
43 ¼ (1099)
44 (1118)
44 (1118)
44 (1118)
278.0 (126)
298.0 (136)
315.0 (143)
7 ¾ (197)
7 ¾ (197)
7 ¾ (197)
8 ¼ (210)
8 ¼ (210)
8 ¾ (222)
2 ⅛ (54)
2 ⅛ (54)
2 ⅜ (60)
39 ¼ (997)
39 ¼ (997)
39 ¼ (997)
44 ¾ (1137)
44 ¾ (1137)
44 ¾ (1137)
43 ¾ (1112)
43 ¾ (1112)
43 ¾ (1112)
44 ½ (1131)
44 ½ (1131)
44 ½ (1131)
277.7 (126)
297.7 (135)
314.7 (143)
58
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
N Orifice, 4.34 sq.in. (2800 sq.mm) API effective area
1000
47
37
900
800
26
16
700
36
46
600
25
Inlet temperature (°F)
500
45
400
35
300
15
200
100
34
14/24
0
44
-100
-200
12/22
-300
32
42
-400
-500
0
200
400
600
800
1000
1200
Set pressure (psig)
59
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
P ORIFICE, 6.38 sq.in. (4116 sq.mm) API EFFECTIVE AREA
Valve series
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1][5]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(+427°C)
(+538°C)
(38°C barg)
Inlet
Outlet
(-29 to +38°C)
(+343°C[1][6])
15
4P6
150
150
285 (19.6)
125 (8.6)
285 (19.6)
JBS-E-
25
4P6
300
150
285 (19.6)
285 (19.6)
285 (19.6)
80 (5.51)
JDS-E-[5][6]
35
4P6
300
150
525 (36.2)
525 (36.2)
285 (19.6)
150 (10.3)
JLT-
45
4P6
600
150
1000 (68.9)
1000 (68.9)
285 (19.6)
150 (10.3)
JOS-H-E-[1]
55
4P6
900
150
1000 (68.9)
1000 (68.9)
285 (19.6)
150 (10.3)
16
4P6
150
150
125 (8.6)
80 (5.5)
285 (19.6)
80 (5.51)
26
4P6
300
150
285 (19.6)
285 (19.6)
285 (19.6)
80 (5.51)
36
4P6
300
150
525 (36.2)
410 (28.3)
285 (19.6)
150 (10.3)
46
4P6
600
150
1000 (68.9)
825 (56.9)
285 (19.6)
150 (10.3)
56
4P6
900
150
1000 (68.9)
1000 (68.9)
285 (19.6)
150 (10.3)
JOS-E-
37
4P6
300
150
510 (35.1)
215 (14.8)
290 (20)
150 (10.3)
JBS-E-
47
4P6
600
150
1000 (68.9)
430 (29.6)
290 (20)
150 (10.3)
JLT-
57
4P6
900
150
1000 (68.9)
650 (44.8)
290 (20)
150 (10.3)
14
4P6
150
150
275 (19.0)
275 (18.9)
80 (5.51)
24
4P6
300
150
275 (19.0)
275 (18.9)
80 (5.51)
34
4P6
300
150
525 (36.2)
275 (18.9)
150 (10.3)
1000 (68.9)
JOS-EJBS-EJDS-E-[5][6]
JLT-
JOS-EJBS-EJLTJOS-EJBS-EJLT-
JOS[2]
JBS/JDS[2]
Outlet
JOS-E-
80 (5.51)
44
4P6
600
150
275 (18.9)
150 (10.3)
12
4P6
150
150
175 (12.1)
275 (18.9)
80 (5.51)
22
4P6
300
150
175 (12.1)
275 (18.9)
80 (5.51)
32
4P6
300
150
300 (20.7)
275 (18.9)
150 (10.3)
42
4P6
600
150
480 (33.1)
275 (18.9)
150 (10.3)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35, 45 and 55 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
6. JDS-E limited to ANSI 600 Inlet Connections.
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
7 psig (0.48 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
60
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
length
Valve (cap) type
D
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
41 ½ (1054)
42 ¼ (1073)
270 (122)
43 ¼ (1099)
44 (1118)
286 (130)
46 ½ (1181)
46 ½ (1181)
45 ½ (1156)
45 ½ (1156)
46 ¼ (1175)
46 ¼ (1175)
401 (182)
416 (189)
38 (966)
39 ¾ (1010)
42 (1067)
42 (1067)
43 ½ (1105)
45 ¼ (1163)
47 ½ (1220)
47 ½ (1220)
42 ½ (1080)
44 ¼ (1124)
46 ½ (1182)
46 ½ (1182)
43 ½ (1105)
45 (1143)
47 ¼ (1201)
47 ¼ (1201)
291.0 (132)
307.0 (140)
422.0 (192)
437.0 (199)
38 ½ (978)
40 ¼ (1023)
42 ½ (1080)
44 (1118)
45 ¾ (1163)
48 (1220)
43 (1093)
44 ¼ (1124)
47 (1194)
43 ¾ (1112)
45 ½ (1156)
47 ¾ (1213)
293.0 (133)
309.0 (141)
424.0 (193)
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25, 26
7 ⅛ (181)
9 (229)
2 ⅛ (54)
37 (940)
42 ½ (1080)
32, 34, 35, 36, 37
8 ⅞ (225)
10 (254)
2 ⅛ (54)
38 ¾ (984)
44 ¼ (1124)
42, 44, 45, 46, 47
55, 56, 57
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
32, 34, 35, 36, 37
42, 44, 45, 46, 47
55, 56, 57
JDS-E
12, 14, 15, 22, 24, 25
32, 34, 35
42, 44, 45
8 ⅞ (225)
8 ⅞ (225)
10 (254)
10 (254)
2 9/16 (65)
2 ⅝ (67)
41 (1041)
41 (1041)
7 ⅛ (181)
8 ⅞ (225)
8 ⅞ (225)
8 ⅞ (225)
9 (229)
10 (254)
10 (254)
10 (254)
2 ⅛ (54)
2 ⅛ (54)
2 9/16 (65)
2 ⅝ (67)
7 ⅛ (181)
8 ⅞ (225)
8 ⅞ (225)
9 (229)
10 (254)
10 (254)
2 ⅛ (54)
2 ⅛ (54)
2 9/16 (65)
61
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
P Orifice, 6.38 sq.in. (4116 sq.mm) API effective area
950
750
-26
-16
650
Inlet temperature (°F)
550
-57
-47
-37
850
-36
-46
-56
-25
450
-15
350
-45
-35
-55
250
150
-14/-24
-44
-34
50
-50
-150
-12
-22
-250
-32
-42
-350
-450
0
200
400
600
800
1000
Set pressure (psig)
62
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
Q ORIFICE, 11.05 sq.in. (7129 sq.mm) API EFFECTIVE AREA
Valve series
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(+427°C)
(+538°C)
(38°C barg)
JBS/JDS[2]
Inlet
Outlet
(-29 to +38°C)
(+343°C[1])
15
6Q8
150
150
165 (11.3)
125 (8.62)
115 (7.92)
25
6Q8
300
150
165 (11.3)
165 (11.3)
115 (7.92)
70 (4.82)
35
6Q8
300
150
300 (20.6)
300 (20.6)
115 (7.92)
115 (7.92)
45
6Q8
600
150
600 (41.3)
600 (41.3)
115 (7.92)
115 (7.92)
6Q8 (HP)
600
150
1000 (68.9)
1000 (68.9)
115 (7.92)
115 (7.92)
16
6Q8
150
150
125 (8.62)
80 (5.51)
115 (7.92)
70 (4.82)
JOS-E-
26
6Q8
300
150
165 (11.3)
165 (11.3)
115 (7.92)
70 (4.82)
JBS-E-
36
6Q8
300
150
300 (20.6)
300 (20.6)
115 (7.92)
115 (7.92)
JLT-
46
6Q8
600
150
600 (41.3)
600 (41.3)
115 (7.92)
115 (7.92)
6Q8 (HP)
600
150
1000 (68.9)
825 (56.9)
115 (7.92)
115 (7.92)
JOS-EJBS-EJLTJOS-H-E-[1]
Outlet
Back press. limit at
JOS[2]
70 (4.82)
165 (11.3)
165 (11.3)
115 (7.92)
115 (7.92)
150
600 (41.3)
430 (29.6)
115 (7.92)
115 (7.92)
150
1000 (68.9)
430 (29.6)
115 (7.92)
115 (7.92)
165 (11.3)
115 (7.92)
70 (4.82)
150
165 (11.3)
115 (7.92)
70 (4.82)
300
150
300 (20.6)
115 (7.92)
115 (7.92)
6Q8
600
150
600 (41.3)
115 (7.92)
115 (7.92)
6Q8 (HP)
600
150
1000 (68.9)
115 (7.92)
115 (7.92)
12
6Q8
150
150
165 (11.3)
115 (7.92)
70 (4.82)
JOS-E-
22
6Q8
300
150
165 (11.3)
115 (7.92)
70 (4.82)
JBS-E-
32
6Q8
300
150
250 (17.2)
115 (7.92)
115 (7.92)
JLT-
42
6Q8
600
150
300 (20.6
115 (7.92)
115 (7.92)
6Q8 (HP)
600
150
561 (38.7)
115 (7.92)
115 (7.92)
42
6Q8
600
150
561 (38.7)
115 (7.92)
115 (7.92)
44
6Q8
600
150
115 (7.92)
115 (7.92)
45
6Q8
600
150
115 (7.92)
115 (7.92)
46
6Q8
600
150
115 (7.92)
115 (7.92)
47
6Q8
600
150
115 (7.92)
115 (7.92)
JOS-E-
37
6Q8
300
150
JBS-E-
47
6Q8
600
6Q8 (HP)
600
14
6Q8
150
150
JOS-E-
24
6Q8
300
JBS-E-
34
6Q8
JLT-
44
JLT-
JOS-HP-E
JBS-HP-E
1000 (68.9)
1000 (68.9)
1000 (68.9)
1000 (68.9)
1000 (68.9)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16,
9 7/16 (240) 9 ½ (241)
22, 24, 25, 26
32, 34, 35,
9 7/16 (240) 9 ½ (241)
36, 37
42, 44, 45,
9 7/16 (240) 9 ½ (241)
46, 47
JOS-HP-E-, JBS-HP-E42, 44, 45,
9 7/16 (240) 9 ½ (241)
46, 47
JBSBP-E-, JLTBP-E
12, 14, 15, 16,
9 7/16 (240) 9 ½ (241)
22, 24, 25, 26
32, 34, 35,
9 7/16 (240) 9 ½ (241)
36, 37
42, 44, 45,
9 7/16 (240) 9 ½ (241)
46, 47
Valve dimensions, inches (mm)
Use to find
Approximate height
bolt length
Valve (cap) type
D
A and G
J and L
C
2 5/16 (59)
2
D
430 (29.6)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
JLTJOS-E
JLTJBS-E
7 psig (0.48 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
Approx.
weight
lbs (kg)
Type J
Valve height
42 ¼ (1073) 47 ¾ (1213) 46 ¾ (1187) 47 ½ (1207) 481 (218)
(59)
42 ¼ (1073) 47 ¾ (1213) 46 ¾ (1187) 47 ½ (1207) 492 (223)
2 15/16 (75)
46 ¼ (1175) 51 ¾ (1314) 50 ¾ (1289) 51 ½ (1308) 565 (256)
2 15/16 (75)
49 ¼ (1251) 54 ¾ (1391) 53 ¾ (1340) 54 ½ (1384) 585 (265)
2 5/16 (59)
43 ⅜ (1102) 48 ⅞ (1242) 47 ⅞ (1216) 48 ⅝ (1236) 511 (232)
2 5/16 (59)
43 ⅜ (1102) 48 ⅞ (1242) 47 ⅞ (1216) 48 ⅝ (1236) 522 (237)
2 15/16 (75)
47 ⅜ (1204) 52 ⅞ (1344) 51 ⅞ (1318) 54 ⅝ (1388) 595 (270)
5/16
825 (56.9)
A
D
B
63
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
Q Orifice, 11.05 sq.in. (7129 sq.mm) API effective area
1000
950
-37
850
750
-47
-26
-16
HP-46
-46
-36
650
HP-47
Inlet temperature (°F)
550
450
HP-45
-15
-25
350
-45
-35
250
150
-44
-34
-14/24
50
HP-44
-50
-150
-12/-22
-250
-32
-42
HP-42
-350
-450
0
100
200
300
400
500
600
700
800
900
1000
Set pressure (psig)
64
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
R ORIFICE, 16.0 sq.in. (10323 sq.mm) API EFFECTIVE AREA
Valve series
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(-29 to +38°C)
(+343°C[1])
(+427°C)
(+538°C)
(38°C barg)
Outlet
6R8
150
150
100 (6.89)
100 (6.89)
60 (4.13)
25
6R8
300
150
100 (6.89)
100 (6.89)
60 (4.13)
50 (3.44)
35
6R10
300
150
230 (15.8)
230 (15.8)
100 (6.89)
100 (6.89)
45
6R10
600
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
6R10 (HP)
600
150
850 (58.6)
850 (58.6)
100 (6.89)
100 (6.89)
16
6R8
150
150
100 (6.89)
80 (5.51)
60 (4.13)
40 (2.75)
JOS-E-
26
6R8
300
150
100 (6.89)
100 (6.89)
60 (4.13)
50 (3.44)
JBS-E-
36
6R10
300
150
230 (15.8)
230 (15.8)
100 (6.89)
100 (6.89)
JLT-
46
6R10
600
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
6R10 (HP)
600
150
850 (58.6)
825 (56.9)
100 (6.89)
100 (6.89)
100 (6.89)
100 (6.89)
100 (6.89)
JBS-EJLTJOS-H-E-[1]
JOS[2]
JBS/JDS[2]
Inlet
15
JOS-E-
Outlet
Back press. limit at
50 (3.44)
JOS-E-
37
6R8
300
150
100 (6.89)
JBS-E-
47
6R10
600
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
6R10 (HP)
600
150
850 (58.6)
430 (29.65)
100 (6.89)
100 (6.89)
14
6R8
150
150
100 (6.89)
60 (4.13)
50 (3.44)
24
6R8
300
150
100 (6.89)
60 (4.13)
50 (3.44)
34
6R10
300
150
230 (15.8)
100 (6.89)
100 (6.89)
44
6R10
600
150
300 (20.6)
100 (6.89)
100 (6.89)
6R10 (HP)
600
150
850 (58.6)
100 (6.89)
100 (6.89)
12
6R8
150
150
37 (2.55)
27.5 (1.89)
JOS-E-
22
6R8
300
150
55 (3.79)
37 (2.55)
27.5 (1.89)
JBS-E-
32
6R10
300
150
150 (10.3)
100 (6.89)
75 (5.17)
JLT-
42
6R10
600
150
200 (13.7)
100 (6.89)
100 (6.89)
JLT-
JOS-EJBS-E-
JOS-HP-E
JBS-HP-E
55 (3.79)
6R10 (HP)
600
150
395 (27.2)
100 (6.89)
100 (6.89)
42
6R10
600
150
395 (27.2)
100 (6.89)
100 (6.89)
44
6R10
600
150
100 (6.89)
100 (6.89)
45
6R10
600
150
100 (6.89)
100 (6.89)
46
6R10
600
150
100 (6.89)
100 (6.89)
47
6R10
600
150
100 (6.89)
100 (6.89)
850 (58.6)
850 (58.6)
850 (58.6)
850 (58.6)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
825 (56.9)
850 (58.6)
430 (29.6)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
JLTJOS-E
JLTJBS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
65
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Valve height
A
D
B
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 22, 24, 25,
9 7/16 (240)
26, 37
32, 34, 35, 36
9 7/16 (240)
42, 44, 45, 46, 47
9 7/16 (240)
JOS-HP-E, JBS-HP-E
42, 44, 45, 46, 47
9 7/16 (240)
JBSBP-E-, JLTBP-E
12, 14, 15, 16, 22, 24, 25, 26
Valve dimensions, inches (mm)
Use to find
Approximate height
bolt length
Valve (cap) type
A and G
J and L
D
C
D
Approx. weight
lbs (kg)
Type J
9 ½ (241)
2 5/16 (59)
47 ¾ (1213)
53 ¼ (1353)
52 ½ (1334)
53 ¼ (1353)
564 (256)
10 ½ (267)
10 ½ (267)
2 5/16 (59)
2 ¾ (70)
47 ¾ (1213)
47 ¾ (1213)
53 ¼ (1353)
53 ¼ (1353)
52 ½ (1334)
52 ½ (1334)
53 ¼ (1353)
53 ¼ (1353)
602 (273)
631 (286)
10 ½ (267)
2 15/16 (75)
50 ⅞ (1292)
56 ⅜ (1432)
55 ⅜ (1407)
56 ⅛ (1426)
831 (377)
9 7/16 (240)
9 ½ (241)
2 5/16 (59)
48 ⅝ (1236)
54 ⅜ (1382)
53 ⅝ (1363)
54 ⅜ (1382)
596 (271)
32, 34, 35, 36, 37
9
(240)
10 ½ (267)
2 5/16 (59)
48 ⅝ (1236)
54 ⅜ (1382)
53 ⅝ (1363)
54 ⅜ (1382)
634 (288)
42, 44, 45, 46, 47
9 7/16 (240)
10 ½ (267)
2 ¾ (70)
48 ⅝ (1236)
54 ⅜ (1382)
53 ⅝ (1363)
54 ⅜ (1382)
663 (301)
7/16
66
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
R Orifice, 16.0 sq.in. (10,323 sq.mm) API Effective Area
950
-37
850
750
-47
HP-47
-16 -26
-36
-46
HP-46
-15
-25
-35
-45
HP-45
650
Inlet temperature (°F)
550
450
350
250
150
-14/-24
50
-34
HP-44
-44
-50
-150
-12
-22
-250
-350
32
42
HP-42
-450
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
Set pressure (psig)
67
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
T ORIFICE, 26.0 sq.in. (16774 sq.mm) API EFFECTIVE AREA
Valve series
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(+427°C)
(+538°C)
(38°C barg)
JBS/JDS[2]
Inlet
Outlet
(-29 to +38°C)
(+343°C[1])
JOS-E-
15
8T10
150
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
JBS-E-
25
8T10
300
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
JLT-
35
8T10
300
150
120 (8.27)
120 (8.27)
60 (4.13)
60 (4.13)
JOS-H-E-[1]
45
8T10
300
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
16
8T10
150
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
26
8T10
300
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
36
8T10
300
150
120 (8.27)
120 (8.27)
60 (4.13)
60 (4.13)
46
8T10
300
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
37
8T10
300
150
60 (4.13)
60 (4.13)
JOS-E-
14
8T10
150
150
65 (4.48)
30 (2.06)
30 (2.06)
JBS-E-
24
8T10
300
150
65 (4.48)
30 (2.06)
30 (2.06)
JLT-
34
8T10
300
150
120 (8.27)
60 (4.13)
60 (4.13)
JOS-E-
12
8T10
150
150
50 (3.44)
30 (2.06)
25 (1.72)
JBS-E-
22
8T10
300
150
50 (3.44)
30 (2.06)
25 (1.72)
JLT-
32
8T10
300
150
65 (4.48)
45 (3.10)
32.5 (2.24)
JOS-EJBS-EJLT-
Outlet
Back press. limit at
JOS[2]
JOS-EJBS-E-
300 (20.6)
215 (14.8)
JLT-
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
DIMENSIONS AND WEIGHTS
Center to face
Inlet
Outlet
A
B
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E12, 14, 15, 16, 10 ⅞ (276) 11 (279)
22, 24, 25, 26
32, 34, 35,
10 ⅞ (276) 11 (279)
36, 37
45, 46
10 ⅞ (276) 11 (279)
JBSBP-E-, JLTBP-E
12, 14, 15, 22, 10 ⅞ (276) 11 (279)
24, 25,
32, 34, 35
10 ⅞ (276) 11 (279)
42, 44, 45
10 ⅞ (276) 11 (279)
Valve dimensions, inches (mm)
Use to find
Approximate height
bolt length
Valve (cap) type
D
A and G
J and L
C
D
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
JLTJOS-E
JLTJBS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
Approx.
weight
lbs (kg)
Type J
2 9/16 (65)
54 (1372)
59 ½ (1511) 58 ½ (1486) 59 ¼ (1505) 882 (400)
2 9/16 (65)
54 (1372)
59 ½ (1511) 58 ½ (1486) 59 ¼ (1505) 902 (409)
2 9/16 (65)
54 (1372)
59 ½ (1511) 58 ½ (1486) 59 ¼ (1505) 930 (422)
2 9/16 (65)
55 ¾ (1417) 61 ¼ (1556) 60 ¼ (1531)
61 (1550)
943 (428)
2 9/16 (65)
2 9/16 (65)
55 ¾ (1416) 61 ¼ (1556) 60 ¼ (1531)
55 ¾ (1416) 61 ¼ (1556) 60 ¼ (1531)
61 (1550)
61 (1550)
963 (437)
991 (450)
Valve height
A
D
B
68
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
T Orifice, 26.0 sq.in. (16,774 sq.mm) API effective area
1000
900
37
800
700
16/26
36
15/25
35
46
600
Inlet temperature (°F)
500
400
300
45
200
100
14/24
0
34
-100
-200
32
12/22
-300
-400
-500
0
50
100
150
200
250
300
350
Set pressure (psig)
69
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
T2 ORIFICE, 27.872 sq.in. (17981 sq.mm) API EFFECTIVE AREA
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Valve series
JOS-EJBS-EJOS-H-E-
[1]
Outlet
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(+427°C)
(+538°C)
(38°C barg)
JBS/JDS[2]
Inlet
Outlet
(-29 to +38°C)
(+343°C[1])
15
8T210
150
150
65 (4.48)
65 (4.48)
JOS[2]
30 (2.06)
30 (2.06)
25
8T210
300
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
35
8T210
300
150
120 (8.27)
120 (8.27)
60 (4.13)
60 (4.13)
45
8T210
300
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
16
8T210
150
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
JOS-E-
26
8T210
300
150
65 (4.48)
65 (4.48)
30 (2.06)
30 (2.06)
JBS-E-
36
8T210
300
150
120 (8.27)
120 (8.27)
60 (4.13)
60 (4.13)
46
8T210
300
150
300 (20.6)
300 (20.6)
100 (6.89)
100 (6.89)
37
8T210
300
150
60 (4.13)
60 (4.13)
14
8T210
150
150
65 (4.48)
30 (2.06)
30 (2.06)
24
8T210
300
150
65 (4.48)
30 (2.06)
30 (2.06)
34
8T210
300
150
120 (8.27)
60 (4.13)
60 (4.13)
12
8T210
150
150
50 (3.44)
30 (2.06)
25 (1.72)
22
8T210
300
150
50 (3.44)
30 (2.06)
25 (1.72)
32
8T210
300
150
65 (4.48)
45 (3.10)
32.5 (2.24)
JOS-EJBS-EJOS-EJBS-EJOS-EJBS-E-
300 (20.6)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
215 (14.8)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Valve series
Use to find
Approximate height
Valve (cap) type
Inlet
Outlet
bolt length
A
B
D
A and G
J and L
Approx. weight
lbs (kg)
C
D
Valve height
Type J
JOS-E-, JBS-E-, JOS-H-E12, 14, 15, 16,
10⅞
11
29/16
54
59½
58½
59¼
882
22, 24, 25, 26
(276)
(279)
(65)
(1372)
(1511)
(1486)
(1505)
(400)
32, 34, 35, 36, 37
10⅞
11
29/16
54
59½
58½
59¼
902
(276)
(279)
(65)
(1372)
(1511)
(1486)
(1505)
(409)
10⅞
11
29/16
54
59½
58½
59¼
930
(276)
(279)
(65)
(1372)
(1511)
(1486)
(1505)
(422)
45, 46
A
D
B
70
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
T2 Orifice, 27.872 sq.in. (17,981 sq.mm) API effective area
1000
900
37
800
700
16/26
36
15/25
35
46
600
Inlet temperature (°F)
500
400
300
45
200
100
14/24
0
34
-100
-200
32
12/22
-300
-400
-500
0
50
100
150
200
250
300
350
Set pressure (psig)
71
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
V ORIFICE, 42.19 sq.in. (27218 sq.mm) API EFFECTIVE AREA
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(+427°C)
(+538°C)
(38°C barg)
Inlet
Outlet
(-29 to +38°C)
(+343°C[1])
JOS[2]
JBS[2]
JOS-E-
15
10V14
150
150
100 (6.9)
100 (6.9)
60 (4.1)
60 (4.1)
JBS-E-
25
10V14
300
150
100 (6.9)
100 (6.9)
60 (4.1)
60 (4.1)
JOS-H-E-[1]
35
10V14
300
150
316 (21.8)
230 (15.9)
120 (8.3)
120 (8.3)
JOS-E-
16
10V14
150
150
100 (6.9)
80 (5.5)
60 (4.1)
60 (4.1)
JBS-E-
26
10V14
300
150
100 (6.9)
100 (6.9)
60 (4.1)
60 (4.1)
Valve series
JOS-E
Outlet
37
10V14
300
150
60 (4.1)
60 (4.1)
JOS-E-
14
10V14
150
150
100 (6.9)
60 (4.1)
60 (4.1)
JBS-E-
24
10V14
300
150 (60)
100 (6.9)
60 (4.1)
60 (4.1)
12
10V14
150
150
70 (4.8)
60 (4.1)
42 (2.9)
22
10V14
300
150 (42)
70 (4.8)
60 (4.1)
42 (2.9)
32
10V14
300
150
70 (4.8)
60 (4.1)
42 (2.9)
JBS-E
JOS-EJBS-E-
100 (6.9)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25 and 35 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
100 (6.9)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
13 psig (0.89 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find bolt
Approximate height
Inlet
Outlet
length
Valve (cap) type
A
B
D
12
16
2.93
(305)
(406)
(74)
22, 24, 25, 26, 32,
12
16
34, 35, 36, 37
(305)
(406)
Valve series
J and L
Approx. weight
lbs (kg)
C
D
75.2
75.2
75.2
(1910)
(1910)
(1910)
(918)
2.93
75.2
75.2
75.2
2248
(74)
(1910)
(1910)
(1910)
(930)
Valve height
Type J
JOS-E-, JBS-E-, JOS-H-E12, 14, 15, 16,
2175
A
D
B
72
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
V Orifice, 42.19 sq.in. (27,218 sq.mm) API effective area
950
-37
850
750
-16
-36
-26
650
Inlet temperature (°F)
550
450
-35
-15
-25
350
250
150
-14/-24
50
-34
-50
-150
-12
-22
-250
-350
-450
0
-32
50
100
150
200
250
300
350
400
Set pressure (psig)
73
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR ANSI FLANGES
W ORIFICE, 60.75 sq.in. (39193 sq.mm) API EFFECTIVE AREA
Standard connections
Maximum set pressure psig (barg)
Valve size Inlet
ANSI flanges raised
Inlet
X Orifice X
face
Back press. limit at
100°F psig
-450 to -76°F
-75 to -21°F
-20 to +100°F
+650°F[1]
+800°F
+1000°F
(-268 to -60°C)
(-59 to -30°C)
(+427°C)
(+538°C)
(38°C barg)
Outlet
(-29 to +38°C)
(+343°C[1])
15
12W16
150
150
100 (6.9)
100 (6.9)
60 (4.1)
60 (4.1)
JBS-E-
25
12W16
300
150
100 (6.9)
100 (6.9)
60 (4.1)
60 (4.1)
JOS-H-E-[1]
35
12W16
300
150
316 (21.8)
230 (15.9)
120 (8.3)
80 (5.5)
JOS-E-
16
12W16
150
150
100 (6.9)
80 (5.5)
60 (4.1)
60 (4.1)
JBS-E-
26
12W16
300
150
100 (6.9))
100 (6.9)
60 (4.1)
60 (4.1)
37
12W16
300
150
60 (4.1)
60 (4.1)
JOS-E-
14
12W16
150
150
100 (6.9)
60 (4.1)
60 (4.1)
JBS-E-
24
12W16
300
150
100 (6.9)
60 (4.1)
60 (4.1)
12
12W16
150
150
70 (4.8)
60 (4.1)
42 (2.9)
22
12W16
300
150
70 (4.8)
60 (4.1)
42 (2.9)
32
12W16
300
150
154 (10.6)
120 (8.3)
80 (5.5)
JOS-E
JBS-E
JOS-EJBS-E-
Outlet
100 (6.9)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25 and 35 is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
JOS[2]
JBS[2]
Inlet
JOS-E-
Valve series
100 (6.9)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Use to find bolt
Approximate height
Inlet
Outlet
length
Valve (cap) type
A
B
D
Center to face
Valve series
J and L
Approx. weight
lbs (kg)
C
D
Type J
Valve height
JOS-E-, JBS-E-, JOS-H-E12, 14, 15, 16
14
16
3.2
88
88
88
(356)
(406)
(81)
(2235)
(2235)
(2235)
3340
(1515)
22, 24, 25, 26, 32,
14
16
3.2
88
88
88
3400
34, 35, 36, 37
(356)
(406)
(81)
(2235)
(2235)
(2235)
(1542)
A
D
B
74
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE/TEMPERATURE LIMIT CHART
W Orifice, 60.75 sq.in. (39193 sq.mm) API effective area
950
-37
850
750
-16
-36
-26
650
Inlet temperature (°F)
550
450
-35
-15
-25
350
250
150
-14/-24
50
-34
-50
-150
-12
-22
-250
-350
-450
0
-32
50
100
150
200
250
300
350
400
Set pressure (psig)
75
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
D ORIFICE, 0.110 sq.in. (71 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
25xDx50
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
A
Valve series
JOS-E-, JBS-E-, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
41/8 (105)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
41/8 (105)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
D
Y
41/2 (114)
13/4 (45)
11/4 (32)
4
1
1
(114)
C
D
Approx.
weight
lbs (kg)
Type J
163/4 (426) 193/4 (502)
19 (483)
19½ (495)
36 (16)
16
19 (483)
19½ (495)
36 (16)
Use to find
bolt length
B
1/2
3/4
(45)
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
Valve dimensions, inches (mm)
Approximate height
Valve (cap) type
Center to face
Inlet
Outlet
at 100°F psig
-20 to +100°F
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
DIMENSIONS AND WEIGHTS
Back press. limit
1/4
(32)
A and G
3/4
J and L
(426) 19
3/4
(502)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
10 psig (0.68 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
Valve height
A
D
B
76
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
E ORIFICE, 0.196 sq.in. (126 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
25xEx50
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
Inlet
Valve series
A
JOS-E-, JBS-E-, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
41/8 (105)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
41/8 (105)
Outlet
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
Valve dimensions, inches (mm)
Center to face
at 100°F psig
-20 to +100°F
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
DIMENSIONS AND WEIGHTS
Back press. limit
C
D
Approx.
weight
lbs (kg)
Type J
163/4 (426) 193/4 (502)
19 (483)
19½ (495)
36 (16)
163/4 (426) 193/4 (502)
19 (483)
19½ (495)
36 (16)
Approximate height
Use to find
bolt length
B
D
Y
41/2 (114)
13/4 (45)
11/4 (32)
41/2 (114)
13/4 (45)
11/4 (32)
Valve (cap) type
A and G
J and L
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
10 psig (0.68 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
Valve height
D
B
77
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
F ORIFICE, 0.307 sq.in. (198 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
40xFx50
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
47/8 (124)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
47/8 (124)
Outlet
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
B
D
Y
43/4 (121)
2 (51)
11/8 (29)
201/4 (515) 231/4 (591) 221/2 (572) 231/4 (591)
50 (23)
6 (152)
2 (51)
13/16 (30)
201/4 (515) 231/4 (591) 221/2 (572) 231/4 (591)
50 (23)
Valve height
A
D
B
78
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
G ORIFICE, 0.503 sq.in. (325 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
40xGx80
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
47/8 (124)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
47/8 (124)
Outlet
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
B
D
Y
43/4 (121)
17/8 (48)
11/16 (27)
201/4 (515) 231/4 (591) 221/2 (572) 231/4 (591)
50 (23)
6 (152)
2 (51)
11/2 (38)
201/4 (515) 231/4 (591) 221/2 (572) 231/4 (591)
50 (23)
Valve height
A
D
B
79
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
H ORIFICE, 0.785 sq.in. (506 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
40xHx80
40xHx80
50xHx80
40xHx80
40xHx80
50xHx80
50xHx80
40xHx80
40xHx80
50xHx80
40xHx80
40xHx80
50xHx80
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Inlet
Valve series
A
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
51/8 (130)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
51/8 (130)
Outlet
B
Use to find
Approximate height
bolt length
D
Y
Valve (cap) type
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
47/8 (124)
17/8 (48)
11/8 (29)
201/2 (521) 231/2 (597) 223/4 (578) 231/4 (591)
55 (25)
47/8 (124)
2 (51)
11/4 (32)
201/2 (521) 231/2 (597) 223/4 (578) 231/4 (591)
60 (27)
Valve height
A
D
B
80
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
J ORIFICE, 1.287 sq.in. (830 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
50xJx80
50xJx80
80xJx100
50xJx80
50xJx80
80xJx100
80xJx100
50xJx80
50xJx80
80xJx100
50xJx80
50xJx80
80xJx100
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
[ 500 (34.4) ]
[ 500 (34.4) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
145 (10)
145 (10)
232 (16)
[ 230 (15.8) ]
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Inlet
Valve series
A
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
53/8 (137)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
71/4 (184)
Outlet
B
Use to find
Approximate height
bolt length
D
Y
Valve (cap) type
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
47/8 (124)
17/8 (48)
13/8 (35)
203/4 (527) 233/4 (603) 231/4 (591) 233/4 (603)
66 (30)
71/8 (181)
213/32 (61)
11/4 (32)
245/8 (632) 285/8 (727) 277/8 (703) 285/8 (727)
100 (45)
Valve height
A
D
B
81
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
K ORIFICE, 1.838 sq.in. (1186 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
80xKx100
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Center to face
Valve series
Inlet
Outlet
A
B
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
61/8 (156)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
61/8 (156)
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
[ 525 (36.2) ]
[ 525 (36.2) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
DIMENSIONS AND WEIGHTS
Back press. limit
Valve dimensions, inches (mm)
Use to find
Approximate height
bolt length
D
Y
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
Valve (cap) type
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
5 psig (0.34 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
Valve height
A
63/8 (162)
23/8 (60)
11/4 (32)
26 (661)
293/4 (756)
29 (737)
293/4 (756)
116 (52)
63/8 (162)
23/8 (60)
11/4 (32)
26 (661)
293/4 (756)
29 (737)
293/4 (756)
117 (53)
D
B
82
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
L ORIFICE, 2.853 sq.in. (1841 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
80xLx100
80xLx100
100xLx150
80xLx100
80xLx100
100xLx150
100xLx150
80xLx100
80xLx100
100xLx150
80xLx100
80xLx100
100xLx150
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
Inlet
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
61/8 (156)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
71/16 (179)
Outlet
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
[ 535 (36.9) ]
[ 535 (36.9) ]
bolt length
D
Y
B
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
34 (864)
152 (69)
Valve (cap) type
61/2 (165)
21/4 (57)
11/4 (32)
301/4 (769)
34 (864)
331/4 (845)
7
2
1
30
34 (864)
34
1/8
(181)
1/8
(54)
(38°C barg)
JOS
JBS/JDS
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 100 (6.9) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
145 (10)
232 (16)
[ 170 (11.7) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
Valve dimensions, inches (mm)
Use to find
Approximate height
Center to face
at 100°F psig
-20 to +100°F
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
DIMENSIONS AND WEIGHTS
Back press. limit
1/4
(32)
1/4
(769)
1/4
(870) 34
1/4
(870)
192 (87)
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
6 psig (0.41 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
Valve height
A
D
B
83
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
M ORIFICE, 3.60 sq.in. (2323 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
100xMx150
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
[ 525 (36.2) ]
[ 525 (36.2) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
C
D
Approx.
weight
lbs (kg)
Type J
33 (838)
333/4 (857)
201 (91)
351/2 (902)
36 (914)
222 (101)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
7 (178)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
7 (178)
Outlet
B
D
Y
A and G
J and L
71/4 (184)
25/32 (55)
11/4 (32)
293/4 (756) 331/2 (851)
71/4 (184)
25/32 (55)
11/4 (32)
321/4 (820)
Valve height
A
36 (914)
D
B
84
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
N ORIFICE, 4.34 sq.in. (2800 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
100xNx150
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
580 (40)
580 (40)
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
145 (10)
232 (16)
[ 160 (11) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
580 (40)
580 (40)
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
[ 450 (31) ]
[ 450 (31) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
73/4 (197)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7 73/4 (197)
Outlet
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
B
D
Y
81/4 (210)
21/8 (54)
15/16 (33)
373/4 (959) 431/4 (1099) 421/4 (1073) 43 (1092)
260 (118)
81/4 (210)
21/8 (54)
15/16 (33)
373/4 (959) 431/4 (1099) 421/4 (1073) 43 (1092)
280 (127)
Valve height
A
D
B
85
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
P ORIFICE, 6.38 sq.in. (4116 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
100xPx150
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F[5]
+800°F
+1000°F
(-29 to +38°C)
145 (10)
232 (16)
232 (16)
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
363 (25)
363 (25)
[ 525 (36.2) ]
[ 525 (36.2) ]
(+343°C[5])
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
[ 285 (19.6) ]
296 (20.4)
296 (20.4)
474 (32.7)
474 (32.7)
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
203 (14)
203 (14)
[ 285 (19.6) ]
[ 285 (19.6) ]
203 (14)
203 (14)
324 (22.3)
324 (22.3)
315 (21.7)
315 (21.7)
504 (34.7)
504 (34.7)
111 (7.6)
111 (7.6)
178 (12.3)
178 (12.3)
(38°C barg)
JOS
JBS/JDS
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
[ 80 (5.5) ]
232 (16)
[ 80 (5.5) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
145 (10)
232 (16)
[ 150 (10.3) ]
145 (10)
232 (16)
232 (16)
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
[ 275 (18.9) ]
363 (25)
363 (25)
[ 525 (36.2) ]
[ 525 (36.2) ]
145 (10)
[ 175 (12.1) ]
[ 175 (12.1) ]
[ 175 (12.1) ]
[ 175 (12.1) ]
[ 175 (12.1) ]
[ 175 (12.1) ]
[ 300 (20.7) ]
[ 300 (20.7) ]
[ 300 (20.7) ]
[ 300 (20.7) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
5. Temperature range of JDS-E is -13 to 500°F (-25 to 260°C).
LOW SET PRESSURE LIMITS
JOS-E
JBS-E/JDS-E
JLTJOS-E
JLTJBS-E/JLTJDS-E
7 psig (0.48 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
71/8 (181)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7 87/8 (225)
Outlet
B
D
Y
A and G
9 (229)
25/32 (55)
15/16 (33)
37 (940)
10 (254)
27/32 (56)
15/16 (33)
383/4 (984)
J and L
C
D
Approx.
weight
lbs (kg)
Type J
421/2 (1080) 411/2 (1054) 421/4 (1073) 270 (122)
441/4 (1124) 431/4 (1099)
44 (1118)
286 (130)
Valve height
A
D
B
86
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
Q ORIFICE, 11.05 sq.in. (7129 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E
2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
150xQx200
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F
+800°F
+1000°F
(-29 to +38°C)
145 (10)
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
(+343°C)
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
296 (20.4)
296 (20.4)
[ 300 (20.6) ]
[ 300 (20.6) ]
118 (8.1)
[ 125 (8.6) ]
[ 125 (8.6) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
296 (20.4)
296 (20.4)
[ 300 (20.6) ]
[ 300 (20.6) ]
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
203 (14)
203 (14)
[ 300 (20.6) ]
[ 300 (20.6) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
111 (7.6)
111 (7.6)
[ 165 (11.4) ]
[ 165 (11.4) ]
145 (10)
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
145 (10)
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 165 (11.4) ]
[ 250 (17.2) ]
[ 250 (17.2) ]
[ 250 (17.2) ]
[ 250 (17.2) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
(38°C barg)
JOS
JBS/JDS
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 70 (4.8) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
[ 115 (7.9) ]
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
JLTJOS-E
JLTJBS-E
7 psig (0.48 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
A
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
97/16 (240)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7 97/16 (240)
Outlet
Y
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
B
D
91/2 (241)
23/8 (60)
113/32 (36) 421/4 (1073) 473/4 (1213) 463/4 (1187) 471/2 (1207) 481 (218)
91/2 (241)
23/8 (60)
113/32 (36) 421/4 (1073) 473/4 (1213) 463/4 (1187) 471/2 (1207) 492 (223)
Valve height
A
D
B
87
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
R ORIFICE, 16.0 sq.in. (10323 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
1A5
1B5
1C5
2D5
JOS-E2E5
JBS-E2F5
JLT2G5
JOS-H-E- 3D5
3E5
3F5
3G5
1A6
1B6
1C6
2D6
JOS-E2E6
2F6
JBS-E2G6
JLT3D6
3E6
3F6
3G6
3D7
JOS-E3E7
JBS-E3F7
JLT3G7
1A4
1B4
1C4
2D4
JOS-E2E4
JBS-E2F4
2G4
JLT3D4
3E4
3F4
3G4
1A2
1B2
1C2
2D2
JOS-E2E2
JBS-E2F2
2G2
JLT3D2
3E2
3F2
3G2
150xRx200
150xRx200
150xRx250
150xRx200
150xRx200
150xRx250
150xRx250
150xRx200
150xRx200
150xRx250
150xRx200
150xRx200
150xRx250
Inlet
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
PN10
PN16
PN16
PN25
PN25
PN40
PN40
PN25
PN25
PN40
PN40
Maximum set pressure psig (barg)
INLET
-450 to -76°F
Outlet
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F
+800°F
+1000°F
(-29 to +38°C)
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
(+343°C)
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
(+427°C)
(+538°C)
80 (5.5)
[ 80 (5.5) ]
[ 80 (5.5) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
203 (14)
203 (14)
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 230 (15.8) ]
[ 55 (3.8) ]
[ 55 (3.8) ]
[ 55 (3.8) ]
[ 55 (3.8) ]
[ 55 (3.8) ]
[ 55 (3.8) ]
[ 55 (3.8) ]
[ 150 (10.3) ]
[ 150 (10.3) ]
[ 150 (10.3) ]
[ 150 (10.3) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
(38°C barg)
JOS
JBS/JDS
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 60 (4.1) ]
[ 40 (2.7 ]
[ 60 (4.1) ]
[ 40 (2.7 ]
[ 60 (4.1) ]
[ 40 (2.7 ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 50 (4.1) ]
[ 100 (6.9) ]
[ 50 (4.1) ]
[ 100 (6.9) ]
[ 50 (4.1) ]
[ 100 (6.9) ]
[ 50 (4.1) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 60 (4.1) ]
[ 50 (3.4) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 37 (2.5) ]
[ 27.5 (1.9) ]
[ 100 (6.9) ]
[ 75 (5.2) ]
[ 100 (6.9) ]
[ 75 (5.2) ]
[ 100 (6.9) ]
[ 75 (5.2) ]
[ 100 (6.9) ]
[ 75 (5.2) ]
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
JLTJOS-E
JLTJBS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve dimensions, inches (mm)
Center to face
Use to find
Approximate height
Inlet
bolt length
Valve (cap) type
Outlet
A
B
Valve series
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
97/16 (240) 91/2 (241)
2()4, 2()5, 2()6
3()2, 3()4, 3()5, 3()6, 3()7
97/16 (240) 101/2 (267)
D
Y
A and G
J and L
C
D
Approx.
weight
lbs (kg)
Type J
23/8 (60)
113/32 (36) 473/4 (1213) 531/4 (1353) 521/2 (1334) 531/4 (1353) 564 (256)
23/8 (60)
117/32 (39) 473/4 (1213) 531/4 (1353) 521/2 (1334) 531/4 (1353) 602 (273)
Valve height
A
D
B
88
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SIZES AND PRESSURE/TEMPERATURE LIMITS FOR EN-1092-1 FLANGES
T ORIFICE, 26.0 sq.in. (16774 sq.mm) API EFFECTIVE AREA
Valve size
Inlet X
Standard connections
EN 1092-1
Valve
Orifice X
TYPE B1
series
Outlet
JBS-EJLT-
JOS-EJBS-EJLT-
JOS-EJBS-EJLT-
JOS-EJBS-EJLT-
JOS-EJBS-EJLT-
Outlet
-450 to -76°F
-75 to -21°F
(-268 to -60°C) (-59 to -30°C)
Back press. limit
at 100°F psig
-20 to +100°F
+650°F
+800°F
+1000°F
(-29 to +38°C)
(+343°C)
(+427°C)
(+538°C)
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
JOS
(38°C barg)
JBS/JDS
3G4
PN40
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
PN10
PN16
1B2
PN16
PN10
[ 50 (3.4) ]
[ 30 (2) ]
[ 25 (1.7) ]
PN16
PN16
[ 50 (3.4) ]
[ 30 (2) ]
[ 25 (1.7) ]
2D2
PN25
PN10
[ 50 (3.4) ]
[ 30 (2) ]
[ 25 (1.7) ]
2E2
PN25
PN16
[ 50 (3.4) ]
[ 30 (2) ]
[ 25 (1.7) ]
PN40
PN40
PN10
PN16
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 45 (3.1) ]
[ 45 (3.1) ]
[ 32.5 (2.2) ]
[ 32.5 (2.2) ]
1B5
JOS-E-
Inlet
PN16
Maximum set pressure psig (barg)
INLET
1C5
2D5
2E5
200xTx250
200xTx250
3F5
PN16
PN25
PN25
PN40
3G5
PN40
1B6
PN16
1C6
200xTx250
PN16
2D6
PN25
2E6
PN25
3F6
200xTx250
PN40
3G6
PN40
2D7
PN25
2E7
3F7
200xTx250
PN25
PN40
3G7
PN40
1B4
PN16
1C4
200xTx250
PN16
2D4
PN25
2E4
PN25
3F4
1C2
3F2
3G2
200xTx250
200xTx250
200xTx250
PN40
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
NOTES
1. Upper temperature limit of JOS-H-E-15, 25, 35 and 45 valves is +800°F (+427°C).
2. Outlet pressure for temperatures above +100°F (+38°C) should not exceed the ANSI flange rating.
3. Valves set below 15 psig (1.03 barg) cannot be stamped with the ASME Code Symbol. Only metal seated
valves may be set below 15 psig.
4. Series designations: JLTJOS-E and JLTJBS-E signify Series JOS-E, JBS-E with liquid trim for liquid and
gas service.
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 65 (4.5) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
[ 120 (8.3) ]
[ 300 (20.6) ]
[ 300 (20.6) ]
[ 100 (6.9) ]
[ 100 (6.9) ]
178 (12.3)
178 (12.3)
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 30 (2) ]
[ 60 (4.1) ]
[ 60 (4.1) ]
LOW SET PRESSURE LIMITS
JOS-E
JBS-E
JLTJOS-E
JLTJBS-E
8 psig (0.55 barg)
25 psig (1.72 barg)
15 psig (1.03 barg)
25 psig (1.72 barg)
DIMENSIONS AND WEIGHTS
Valve height
Valve dimensions, inches (mm)
Center to face
Use to find
Inlet
Outlet
bolt length
Valve series
A
B
D
Y
JOS-E, JBS-E, JLT-, JOS-H-E
1()2, 1()4, 1()5, 1()6, 2()2,
107/8 (276) 11 (279) 211/16 (68) 11/2 (38)
2()4, 2()5, 2()6, 2()7
3()2, 3()4, 3()5, 3()6, 3()7
107/8 (276) 11 (279) 211/16 (68) 11/2 (38)
Approximate height
Valve (cap) type
A and G
J and L
C
D
Approx. weight
lbs (kg)
Type J
54 (1372) 591/2 (1511) 581/2 (1486) 591/4 (1505)
882 (400)
54 (1372) 591/2 (1511) 581/2 (1486) 591/4 (1505)
902 (409)
A
D
B
89
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E , JLTJBS-E AND JLTJDS-E, USCS Units[1] (United States Customary System)
Set pressures 5 - 880 psig
Set pressure
(psig)
1 psi incr.
5 psi incr.
5
6
7
8
9
10
15
20
30
40
50
60
70
80
90
100
120
140
160
180
200
220
240
260
280
300
320
340
360
380
400
420
440
460
480
D
0.110
2.2
10.8
54.6
64.5
74.3
94.0
115.0
137.0
159.0
180.0
202.0
224.0
245.0
289.0
332.0
376.0
419.0
462.0
506.0
549.0
593.0
636.0
679.0
723.0
766.0
810.0
853.0
896.0
940.0
983.0
1027.0
1070.0
E
0.196
3.9
19.3
F
0.307
6.1
30.3
G
0.503
9.9
49.5
H
0.785
15.5
77.4
Orifice letter designation and effective area, sq.in.
J
K
L
M
N
P
Q
1.287 1.838 2.853
3.60
4.34
6.38
11.05
25.3
36.2
56.2
70.9
85.5
126
218
127
181
281
355
427
628
1088
R
16.0
315
1575
T
26.0
512
2560
T2
27.872
549
2744
V
42.19
835
4173
W
60.75
1362
6810
90.2
93.7
97.2
114.0
132.0
167.0
206.0
244.0
283.0
321.0
360.0
399.0
437.0
515.0
592.0
669.0
746.0
823.0
901.0
978.0
1055.0
1132.0
1210.0
1287.0
1364.0
1441.0
1519.0
1596.0
1673.0
1750.0
1827.0
1905.0
124
130
135
141
146
152
179
207
262
322
383
444
504
565
625
686
807
928
1049
1170
1291
1412
1533
1654
1775
1896
2017
2138
2259
2380
2501
2622
2743
2864
2986
204
213
222
231
240
249
294
339
429
528
627
726
825
923
1022
1121
1319
1517
1715
1913
2111
2309
2507
2705
2903
3101
3299
3497
3695
3892
4090
4288
4486
4684
4882
319
333
347
361
375
389
459
530
670
825
980
1135
1289
1444
1599
1753
2063
2372
2682
2991
3300
3610
3919
4229
4538
4848
5157
5466
5776
6085
6395
6704
7013
7323
7632
522
546
569
592
615
638
753
868
1098
1352
1605
1859
2112
2366
2619
2872
3379
3886
4393
4900
5407
5914
6421
6927
7434
7941
8448
8955
9462
9969
10475
10982
11489
11996
12503
7361
7648
7934
9366
10798
13663
16814
19965
23116
26266
29417
32568
35719
42021
48323
54624
60926
67228
73530
79832
86133
92435
98737
105039
111340
117642
123944
130246
136548
142849
149151
155453
11964
12429
12895
15222
17550
22205
27326
32447
37567
42688
47809
52930
58051
68292
78534
88775
99017
109258
119500
129741
139983
150225
160466
12824
13323
13822
16317
18812
23802
29291
34780
40269
45758
51247
56736
62225
73203
84181
95158
106136
117114
128092
139070
150048
161026
172004
24807
28600
36187
44532
52877
61222
69567
77912
86257
94603
111293
127983
144673
161363
178054
194744
211434
228124
244814
261505
40487
46677
59059
72678
86298
99917
113537
127157
140776
154396
181635
208874
236113
263352
290591
317830
345069
372308
399547
426786
747
780
813
845
878
911
1076
1240
1570
1932
2294
2656
3018
3380
3742
4104
4829
5553
6277
7001
7725
8449
9174
9898
10622
11346
12070
12795
13519
14243
14967
15691
16416
17140
17864
1210
1261
1312
1363
1414
1670
1925
2436
2997
3559
4121
4683
5245
5807
6368
7492
8616
9739
10863
11986
13110
14234
15357
16481
17604
18728
19852
20975
22099
23222
24346
25470
26593
27717
1656
1720
1785
2107
2429
3074
3783
4492
5201
5910
6619
7328
8037
9455
10873
12291
13709
15127
16545
17963
19381
20799
22217
23635
25054
26472
27890
29308
30726
32144
33562
34980
1996
2074
2152
2540
2929
3706
4560
5415
6270
7124
7979
8834
9688
11397
13107
14816
16525
18235
19944
21653
23363
25072
26781
28491
30200
31909
33619
35328
37037
38746
40456
42165
2821
2936
3050
3164
3735
4307
5449
6706
7962
9219
10476
11732
12989
14246
16759
19273
21786
24299
26813
29326
31840
34353
36866
39380
41893
44406
46920
49433
51947
54460
56973
59487
62000
4489
4686
4884
5082
5280
5477
6466
7455
9433
11608
13783
15959
18134
20309
22485
24660
29011
33362
37712
42063
46414
50764
55115
59466
63817
68167
72518
76869
81220
85570
89921
94272
98622
102973
107324
* Numbers marked bold = JOS-E only.
NOTES
1. For air capacities, USCS units are exact equivalents of Imperial units.
2. Not valid below 30 psig set pressure.
3. Capacities below 30 psig set pressure are calculated at 3 psi overpressure.
* Capacity in standard cubic feet per minute of air at 60°F and 10% overpressure. Valve discharging to
atmospheric pressure.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
90
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E , JLTJBS-E AND JLTJDS-E, USCS Units[1] (United States Customary System)
Set pressures 5 - 880 psig (continued)
Set pressure
(psig)
1 psi incr.
5 psi incr.
D
0.110
2.2
10.8
E
0.196
3.9
19.3
F
0.307
6.1
30.3
G
0.503
9.9
49.5
H
0.785
15.5
77.4
Orifice letter designation and effective area, sq.in.
J
K
L
M
N
P
Q
1.287 1.838 2.853
3.60
4.34
6.38
11.05
25.3
36.2
56.2
70.9
85.5
126
218
127
181
281
355
427
628
1088
500
520
540
560
580
600
620
640
660
680
700
720
740
760
780
800
820
840
860
880
1113
1157
1200
1244
1287
1330
1374
1417
1461
1504
1547
1591
1634
1678
1721
1764
1808
1851
1895
1938
1982
2059
2136
2214
2291
2368
2445
2523
2600
2677
2754
2831
2909
2986
3063
3140
3218
3295
3372
3449
3107
3228
3349
3470
3591
3712
3833
3954
4075
4196
4317
4438
4559
4680
4801
4922
5043
5164
5285
5406
5080
5278
5476
5674
5872
6070
6268
6466
6663
6861
7059
7257
7455
7653
7851
8049
8247
8445
8643
8841
7942
8251
8561
8870
9179
9489
9798
10108
10417
10727
11036
11345
11655
11964
12274
12583
12892
13202
13511
13821
13010
13517
14023
14530
15037
15544
16051
16558
17065
17572
18078
18585
19092
19599
20106
20613
21120
21626
22133
22640
18588
19312
20037
20761
21485
22209
22933
23657
24382
25106
25830
26554
27278
28003
28727
29451
30175
30899
31624
32348
28841
29964
31088
32211
33335
34459
35582
36706
37829
38953
40077
41200
42324
43447
44571
45695
46818
47942
49066
50189
36398
37816
39234
40652
42070
43488
44906
46324
47742
49160
50578
51996
53414
54832
56250
57668
59086
60504
61922
63340
43874
45584
47293
49002
50712
52421
54130
55840
57549
59258
60968
62677
64386
66095
67805
69514
71223
72933
74642
76351
64514
67027
69540
72054
74567
77080
79594
82107
84621
87134
89647
92161
94674
97188
99701
102214
104728
107241
109754
112268
111675
116025
120376
124727
129077
133428
137779
142130
146480
150831
155182
159532
163883
168234
172585
176935
181286
185637
189987
194338
R
16.0
315
1575
T
26.0
512
2560
T2
27.872
549
2744
V
42.19
835
4173
W
60.75
1362
6810
161755
168056
174358
180660
186962
193263
199565
205867
212169
218471
224772
231074
237376
243678
249979
256281
262583
268885
NOTES
1. For air capacities, USCS units are exact equivalents of Imperial units.
2. Not valid below 30 psig set pressure.
3. Capacities below 30 psig set pressure are calculated at 3 psi overpressure.
* Capacity in standard cubic feet per minute of air at 60°F and 10% overpressure. Valve discharging to
atmospheric pressure.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
91
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E , JLTJBS-E AND JLTJDS-E, USCS Units[1] (United States Customary System)
Set pressures 900 - 6000 psig
Set pressure
(psig)
1 psi incr.
5 psi incr.
900
920
940
960
980
1000
1100
1200
1300
1400
1480
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4200
4400
4600
4800
5000
5200
5500
5600
5800
6000
D
0.110
2.2
10.8
1981
2025
2068
2111
2155
2198
2415
2632
2849
3066
3240
3283
3500
3717
3934
4151
4368
4585
4802
5019
5236
5453
5670
5887
6104
6321
6538
6755
6972
7189
7406
7623
7840
8057
8274
8491
8708
9142
9576
10009
10443
10877
11311
11962
12179
12613
13047
E
0.196
3.9
19.3
3527
3604
3681
3758
3836
3913
4299
4685
5071
5457
5766
5844
6230
6616
7002
7388
7774
8161
8547
8933
9319
9705
10091
10478
10864
11250
11636
12022
12408
12795
13181
13567
13953
14339
14725
15112
15498
16270
17042
17815
18587
19359
20132
21290
21676
22449
23221
F
0.307
6.1
30.3
5528
5649
5770
5891
6012
6133
6738
7343
7948
8554
9038
9159
9764
10369
10975
11580
12185
12790
13396
14001
14606
15211
15817
16422
17027
17632
18237
18843
19448
20053
20658
21264
21869
22474
23079
23685
24290
25500
26711
27921
29132
30342
G
0.503
9.9
49.5
9039
9237
9435
9632
9830
10028
11018
12008
12997
13987
14779
14977
15966
16956
17946
18935
19925
20915
21904
22894
23883
24873
25863
26852
27842
28832
29821
30811
31801
32790
33780
34770
35759
36749
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
P
Q
0.785
1.287
1.838
2.853
3.60
4.34
6.38
11.05
15.5
25.3
36.2
56.2
70.9
85.5
126
218
77.4
127
181
281
355
427
628
1088
14130
23147
33072
51313
64758
78061 114781 198689
14440
23654
33796
52436
66176
79770 117295 203040
14749
24161
34520
53560
67594
81479 119808 207390
15058
24668
35244
54684
69012
83189 122321 211741
15368
25174
35969
55807
70430
84898 124835 216092
15677
25681
36693
56931
71849
86607 127348 220443
17224
28216
40314
62549
78939
18771
30750
43935
68167
20319
33284
47556
73785
21866
35819
51177
79403
23103
37846
54073
83897
23413
38353
54798
24960
40887
58419
26507
43422
62040
28054
45956
65660
29601
48490
69281
31148
51024
72902
32695
53559
76523
34242
56093
80144
35790
58627
37337
61162
38884
63696
40431
66230
41978
68765
R
16.0
315
1575
T
26.0
512
2560
T2
27.872
549
2744
NOTE
1. For air capacities, USCS units are exact equivalents of Imperial units.
* Capacity in standard cubic feet per minute of air at 60°F and 10% overpressure. Valve discharging to
atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
92
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, USCS Units[1] (United States Customary System)
Differential pressures ∆P[2], 5 - 1040 psi[3]
Differential pressure
∆ P - psi
5
10
15
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
380
400
420
440
460
480
500
520
540
560
580
600
620
640
660
680
D
0.110
E
0.196
F
0.307
G
0.503
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
0.785
1.287
1.838
2.853
3.60
4.34
P
6.38
Q
11.05
R
16.0
T
26.0
6.9
9.8
12.0
13.9
19.6
24.0
27.7
31.0
34.0
36.7
39.2
41.6
43.9
46.0
48.0
50.0
51.9
53.7
55.5
57.2
58.8
60.4
62.0
63.6
65.0
66.5
67.9
69.3
70.7
72.1
73.4
74.7
76.0
77.2
78.4
79.7
80.9
12.3
17.5
21.4
24.7
34.9
42.7
49.4
55.2
60.5
65.3
69.8
74.0
78.0
81.9
85.5
89.0
92.3
95.6
98.7
102.0
105.0
108.0
110.0
113.0
116.0
118.0
121.0
123.0
126.0
128.0
131.0
133.0
135.0
137.0
140.0
142.0
144.0
19.3
27.4
33.5
38.7
54.7
67.0
77.4
86.5
94.8
102.0
109.0
116.0
122.0
128.0
134.0
139.0
145.0
150.0
155.0
159.0
164.0
169.0
173.0
177.0
181.0
186.0
190.0
193.0
197.0
201.0
205.0
208.0
212.0
215.0
219.0
222.0
226.0
31.6
44.7
54.8
63.3
89.5
110.0
127.0
141.0
155.0
167.0
179.0
190.0
200.0
210.0
219.0
228.0
237.0
245.0
253.0
261.0
268.0
276.0
283.0
290.0
297.0
303.0
310.0
316.0
323.0
329.0
335.0
341.0
346.0
352.0
358.0
363.0
369.0
49.4
69.9
85.6
98.9
140.0
171.0
198.0
221.0
242.0
262.0
280.0
297.0
313.0
328.0
343.0
357.0
370.0
383.0
396.0
408.0
420.0
431.0
442.0
453.0
464.0
474.0
484.0
494.0
504.0
514.0
523.0
532.0
542.0
551.0
559.0
568.0
577.0
402
568
696
803
1136
1391
1606
1796
1967
2125
2272
2410
2540
2664
2782
2896
3005
3111
3213
3312
3408
3501
3592
3681
3767
3852
3935
4016
4096
4174
4250
4325
4399
4472
4544
4614
4683
695
983
1204
1390
1966
2408
2781
3109
3406
3679
3933
4171
4397
4611
4816
5013
5202
5385
5561
5733
5899
6060
6218
6371
6521
6668
6811
6952
7089
7224
7357
7487
7615
7741
7865
7987
8107
1007
1424
1744
2014
2848
3488
4028
4503
4933
5328
5696
6042
6368
6679
6976
7261
7535
7800
8055
8303
8544
8778
9006
9229
9446
9658
9866
10069
10269
10464
10656
10845
11030
11213
11392
11569
11743
1636
2314
2834
3273
4629
5669
6546
7318
8017
8659
9257
9819
10350
10855
11338
11801
12246
12676
13092
13494
81
115
140
162
229
281
324
362
397
429
458
486
512
537
561
584
606
627
648
668
687
706
724
742
760
777
794
810
826
842
857
872
887
902
916
930
944
116
164
200
231
327
401
463
517
567
612
655
694
732
768
802
834
866
896
926
954
982
1009
1035
1061
1085
1110
1134
1157
1180
1203
1225
1246
1268
1289
1309
1329
1349
180
254
311
359
508
622
718
803
880
950
1016
1077
1135
1191
1244
1295
1344
1391
1436
1480
1523
1565
1606
1645
1684
1722
1759
1795
1831
1866
1900
1934
1967
1999
2031
2063
2094
227
320
392
453
641
785
906
1013
1110
1199
1282
1359
1433
1503
1570
1634
1696
1755
1813
1868
1923
1975
2027
2077
2125
2173
2220
2266
2311
2355
2398
2440
2482
2523
2563
2603
2642
273
386
473
546
773
946
1092
1221
1338
1445
1545
1639
1727
1812
1892
1970
2044
2116
2185
2252
2318
2381
2443
2503
2562
2620
2676
2731
2785
2838
2890
2942
2992
3041
3090
3138
3185
NOTES
1. USCS units for water and liquids are U.S. gallons per minute (1 U.S. gallon equals 0.8327 Imperial gallon).
2. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
3. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in U.S. gallons per minute of water at 70°F and 10% overpressure.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
93
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, USCS Units[1] (United States Customary System) (continued)
Differential pressures ∆P[2], 5 - 1040 psi[3]
Differential pressure
∆ P - psi
700
720
740
760
780
800
820
840
860
880
900
920
940
960
980
1000
1020
1040
D
0.110
E
0.196
F
0.307
G
0.503
82.0
83.2
84.4
85.5
86.6
87.7
88.8
89.9
90.9
92.0
93.0
94.1
95.1
96.1
97.1
98.1
99.0
100.0
146
148
150
152
154
156
158
160
162
164
166
167
169
171
173
175
176
178
229
232
235
238
242
245
248
251
254
257
259
262
265
268
271
274
276
279
374
380
385
390
395
400
405
410
415
420
424
429
434
438
443
447
452
456
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
0.785
1.287
1.838
2.853
3.60
4.34
585
593
601
610
618
625
633
641
648
656
663
671
678
685
692
699
706
713
958
972
985
998
1012
1024
1037
1050
1062
1074
1087
1099
1110
1122
1134
1145
1157
1168
1369
1389
1408
1427
1445
1464
1482
1500
1518
1535
1552
1570
1587
1603
1620
1636
1653
1669
2124
2154
2184
2213
2242
2271
2299
2327
2355
2382
2409
2435
2462
2488
2513
2539
2564
2589
2681
2719
2756
2793
2830
2866
2902
2937
2972
3006
3040
3073
3107
3140
3172
3204
3236
3268
3232
3277
3323
3367
3411
3455
3498
3540
3582
3623
3664
3705
3745
3784
3824
3863
3901
3939
P
6.38
Q
11.05
R
16.0
4752
4819
4886
4951
5016
5080
5143
5205
5267
5328
5388
5448
5506
5565
5622
5679
5736
5792
8225
8342
8457
8571
8683
8793
8903
9011
9117
9223
9327
9430
9532
9633
9732
9831
11914
12083
12250
12414
12576
12737
12895
13051
T
26.0
NOTES
1. USCS units for water and liquids are U.S. gallons per minute (1 U.S. gallon equals 0.8327 Imperial gallon).
2. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
3. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in U.S. gallons per minute of water at 70°F and 10% overpressure.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
94
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, USCS Units[1] (United States Customary System)
Differential pressures ∆P[2], 1060 - 6600 psi[3]
Differential pressure
∆ P - psi
1060
1080
1100
1120
1140
1160
1180
1200
1220
1240
1260
1280
1300
1320
1340
1360
1380
1400
1420
1440
1460
1480
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
D
0.110
E
0.196
F
0.307
G
0.503
101
102
103
104
105
106
107
107
108
109
110
111
112
113
114
114
115
116
117
118
118
119
120
124
128
132
135
139
142
145
149
152
155
158
161
164
167
180
181
183
185
186
188
190
191
193
194
196
197
199
201
202
204
205
206
208
209
211
212
214
221
228
234
241
247
253
259
265
270
276
281
287
292
297
282
284
287
289
292
295
297
300
302
305
307
309
312
314
317
319
321
324
326
328
331
333
335
346
357
367
377
387
396
406
415
424
432
441
449
458
466
460
465
469
473
478
482
486
490
494
498
502
506
510
514
518
522
525
529
533
537
540
544
548
566
583
600
617
633
648
663
678
693
707
721
735
748
762
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
0.785
1.287
1.838
2.853
3.60
4.34
720
727
733
740
747
753
760
766
772
779
785
791
797
803
809
815
821
827
833
839
845
851
856
884
912
938
964
989
1013
1037
1060
1083
1106
1127
1149
1170
1191
1179
1190
1201
1212
1223
1234
1244
1255
1265
1275
1286
1296
1306
1316
1326
1336
1345
1355
1365
1374
1384
1393
1403
1449
1493
1537
1579
1620
1660
1699
1737
1774
1811
1847
1882
1917
1950
1685
1701
1716
1732
1747
1763
1778
1793
1808
1822
1837
1851
1866
1880
1894
1908
1922
1936
1950
1964
1977
1991
2004
2070
2134
2196
2256
2314
2371
2427
2482
2535
2614
2639
2663
2687
2711
2735
2758
2781
2804
2827
2850
2873
2895
2917
2939
2961
2983
3004
3026
3047
3068
3089
3110
3212
3299
3330
3361
3391
3421
3451
3481
3510
3977
4014
4051
P
6.38
Q
11.05
R
16.0
T
26.0
5847
5902
5957
NOTES
1. USCS units for water and liquids are U.S. gallons per minute (1 U.S. gallon equals 0.8327 Imperial gallon).
2. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
3. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in U.S. gallons per minute of water at 70°F and 10% overpressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
95
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, USCS Units[1] (United States Customary System) (continued)
Differential pressures ∆P[2], 1060 - 6600 psi[3]
Differential pressure
∆ P - psi
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5500
6000
6600
D
0.110
E
0.196
F
0.307
G
0.503
170
173
175
178
181
183
186
189
191
194
196
199
201
203
206
208
210
213
215
217
219
230
240
252
302
307
312
317
322
327
331
336
340
345
349
353
358
362
366
370
374
378
382
386
390
409
427
448
474
482
489
497
504
512
519
526
533
540
547
554
561
567
574
580
587
593
599
605
612
641
775
787
800
812
825
837
849
860
872
883
895
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
0.785
1.287
1.838
2.853
3.60
4.34
1211
P
6.38
Q
11.05
R
16.0
T
26.0
1984
NOTES
1. USCS units for water and liquids are U.S. gallons per minute (1 U.S. gallon equals 0.8327 Imperial gallon).
2. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
3. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in U.S. gallons per minute of water at 70°F and 10% overpressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
96
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E[2], USCS Units[1]
Set pressures 5 - 570 psig
Set pressure
(psig)
1 psi incr.
5 psi incr.
5
6
7
8
9
10
15
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
D
0.11
6.1
30.5
153
181
208
264
325
386
447
508
569
630
691
752
812
873
934
995
1056
1117
1178
1239
1300
1361
1422
1483
1544
1605
1666
1727
1788
1849
E
0.196
10.8
54.2
F
0.307
17.0
85.0
G
0.503
27.8
139
H
0.785
43.5
217
J
1.287
71.2
356
Orifice letter designation and effective area, sq.in.
K
L
M
N
P
Q
1.838 2.853
3.6
4.34
6.38
11.05
102
158
199
240
353
611
509
789
996
1201
1765
3056
253
263
273
322
371
470
578
687
795
904
1012
1121
1229
1338
1446
1555
1663
1772
1880
1989
2097
2206
2314
2423
2531
2640
2748
2857
2965
3074
3182
3291
350
366
381
397
412
428
505
582
737
907
1077
1247
1417
1587
1757
1927
2097
2267
2437
2607
2777
2947
3117
3287
3457
3627
3798
3968
4138
4308
4478
4648
4818
4988
5158
573
599
624
649
674
700
826
952
1205
1483
1761
2039
2317
2595
2873
3151
3429
3708
3986
4264
4542
4820
5098
5376
5654
5932
6210
6488
6766
7044
7322
7600
7878
8156
8434
896
936
975
1015
1055
1094
1292
1489
1884
2319
2754
3188
3623
4058
4492
4927
5361
5796
6231
6665
7100
7535
7969
8404
8839
9273
9708
10143
10577
11012
11447
11881
12316
12751
13185
1469
1534
1598
1663
1728
1792
2116
2440
3087
3799
4511
5223
5935
6647
7359
8071
8783
9495
10207
10919
11631
12343
13055
13767
14479
15191
15903
16615
17327
18039
18751
19463
20175
20887
21599
2099
2191
2284
2376
2469
2561
3024
3486
4411
5428
6445
7463
8480
9497
10515
11532
12549
13566
14584
15601
16618
17636
18653
19670
20687
21705
22722
23739
24757
25774
26791
27808
28826
29843
30860
3400
3544
3687
3831
3974
4692
5409
6844
8422
10001
11579
13157
14736
16314
17892
19471
21049
22627
24206
25784
27363
28941
30519
32098
33676
35254
36833
38411
39989
41568
43146
44725
46303
47881
4653
4834
5016
5921
6826
8637
10629
12621
14613
16605
18597
20589
22581
24573
26565
28557
30549
32541
34533
36524
38516
40508
42500
44492
46484
48476
50468
52460
54452
56444
58436
60428
5609
5828
6046
7137
8229
10412
12813
15214
17615
20016
22417
24818
27219
29620
32022
34423
36824
39225
41626
44027
46428
48829
51230
53632
56033
58434
60835
63236
65637
68038
70439
72840
7927
8248
8569
8890
10495
12100
15310
18840
22371
25901
29432
32963
36493
40024
43554
47085
50616
54146
57677
61207
64738
68269
71799
75330
78861
82391
85922
89452
92983
96514
100044
103575
107105
12612
13167
13723
14278
14834
15390
18168
20945
26501
32613
38725
44836
50948
57059
63171
69282
75394
81505
87617
93729
99840
105952
112063
118175
124286
130398
136510
142621
148733
154844
160956
167067
173179
179290
185402
R
16
885
4426
T
26
1439
7193
T2
27.872
1542
7711
V
42.19
2345
11723
W
60.75
3826
19132
20682
21486
22291
26315
30339
38386
47238
56091
64943
73795
82647
91500
100352
109204
118056
126909
135761
144613
153465
162318
171170
180022
188874
197727
206579
215431
224283
233136
241988
250840
259693
268545
33612
34920
36228
42767
49306
62385
76771
91158
105545
119931
134318
148704
163091
177477
191864
206251
220637
235024
249410
263797
278183
292570
306957
321343
335730
350116
364503
378889
393276
407663
422049
436436
36029
37430
38832
45842
52852
66871
82292
97713
113134
128555
143976
159397
174818
190239
205660
221081
236502
251923
267344
282765
298186
313607
329028
344449
359870
375291
390712
406133
421554
436975
452396
467817
69695
80352
101666
125111
148556
172001
195447
218892
242337
265782
289227
312672
336117
359562
383008
406453
429898
453343
476788
500233
523678
547123
570569
594014
617459
640904
664349
687794
711239
113746
131139
165924
204187
242450
280714
318977
357241
395504
433767
472031
510294
548558
586821
625084
663348
701611
739875
778138
816401
854665
892928
931192
969455
1007718
1045982
1084245
1122509
1160772
Numbers marked bold = JOS-E only.
NOTES
1. USCS - United States Customary System.
2. Upper temperature limit of JDS-E 500°F (260°C)
Capacities of saturated steam to be stated at an overpressure of 10% or 3 psi, whichever is greater, for valves
certified on steam.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
97
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E[2], USCS Units[1]
Set pressures 5 - 570 psig (continued)
Set pressure
(psig)
1 psi incr.
5 psi incr.
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500
510
520
530
540
560
570
D
0.11
6.1
30.5
1910
1971
2032
2093
2154
2215
2275
2336
2397
2458
2519
2580
2641
2702
2763
2824
2885
2946
3007
3068
3129
3190
3251
3312
3373
3495
3556
E
0.196
10.8
54.2
3399
3508
3616
3725
3833
3942
4050
4159
4267
4376
4484
4593
4701
4810
4918
5027
5135
5244
5352
5461
5569
5678
5786
5895
6003
6220
6328
F
0.307
17.0
85.0
5328
5498
5668
5838
6008
6178
6348
6518
6688
6858
7028
7198
7368
7538
7708
7878
8048
8219
8389
8559
8729
8899
9069
9239
9409
9749
9919
G
0.503
27.8
139
8712
8990
9268
9546
9824
10102
10380
10658
10937
11215
11493
11771
12049
12327
12605
12883
13161
13439
13717
13995
14273
14551
14829
15107
15385
15941
16219
H
0.785
43.5
217
13620
14054
14489
14924
15358
15793
16228
16662
17097
17532
17966
18401
18836
19270
19705
20140
20574
21009
21444
21878
22313
22747
23182
23617
24051
24921
25355
J
1.287
71.2
356
22311
23023
23735
24447
25159
25871
26583
27295
28007
28719
29431
30143
30855
31567
32279
32991
33703
34415
35127
35839
36551
37263
37975
38687
39399
40823
41535
Orifice letter designation and effective area, sq.in.
K
L
M
N
P
Q
1.838 2.853
3.6
4.34
6.38
11.05
102
158
199
240
353
611
509
789
996
1201
1765
3056
31878 49460
62420
75242 110636 191514
32895 51038
64412
77643 114167 197625
33912 52616
66404
80044 117697 203737
34929 54195
68396
82445 121228 209848
35947 55773
70387
84846 124758 215960
36964 57351
72379
87247 128289 222071
37981 58930
74371
89648 131820 228183
38999 60508
76363
92049 135350 234295
40016 62087
78355
94450 138881 240406
41033 63665
80347
96852 142412 246518
42050 65243
82339
99253 145942 252629
43068 66822
84331 101654 149473 258741
44085 68400
86323 104055 153003 264852
45102 69978
88315 106456 156534 270964
46120 71557
90307 108857 160065 277075
47137 73135
92299 111258 163595 283187
48154 74713
94291 113659 167126 289299
49171 76292
96283 116060 170656 295410
50189 77870
98275 118462 174187 301522
51206 79449 100267 120863 177718 307633
52223 81027 102259 123264 181248 313745
53241 82605 104250 125665 184779 319856
54258 84184 106242 128066 188310 325968
55275 85762 108234 130467 191840 332079
56292 87340 110226 132868 195371 338191
58327 90497 114210 137670 202432 350414
59344 92075 116202 140072 205963 356526
R
16
885
4426
277397
286249
295102
303954
312806
321658
330511
339363
348215
357067
365920
374772
383624
392476
401329
410181
419033
427885
436738
445590
454442
463294
472147
480999
489851
507556
516408
T
26
1439
7193
450822
T2
V
W
27.872 42.19
60.75
1542
2345
3826
7711
11723 19132
483238 734685 1199036
NOTES
1. USCS - United States Customary System.
2. Upper temperature limit of JDS-E 500°F (260°C)
Capacities of saturated steam to be stated at an overpressure of 10% or 3 psi, whichever is greater, for valves
certified on steam.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
98
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE -Series JOS-E, JBS-E and JDS-E[2], USCS Units[1]
Set pressures 580 - 1780 psig
Set pressure
(psig)
1 psi incr.
5 psi incr.
D
0.110
6.1
30.5
E
0.196
10.8
54.2
F
0.307
17.0
85.0
G
0.503
27.8
139
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
P
0.785
1.287
1.838
2.853
3.60
4.34
6.38
43.5
71.2
102
158
199
240
353
217
356
509
789
996
1201
1765
580
590
600
620
640
660
680
700
720
740
760
780
800
820
840
860
880
900
920
940
960
980
1000
1020
1040
1060
1080
1100
1120
1140
1160
1180
1200
1220
1240
1260
1280
3617
3678
3738
3860
3982
4104
4226
4348
4470
4592
4714
4836
4958
5080
5202
5323
5445
5567
5689
5811
5933
6055
6177
6299
6421
6543
6665
6786
6908
7030
7152
7274
7396
7518
7640
7762
7884
6437
6545
6654
6871
7088
7305
7522
7739
7956
8173
8390
8607
8824
9041
9258
9475
9692
9909
10126
10343
10560
10777
10994
11211
11428
11645
11862
12078
12295
12512
12729
12946
13163
13380
13597
13814
14031
10089
10259
10429
10769
11109
11449
11789
12129
12469
12810
13150
13490
13830
14170
14510
14850
15190
15530
15870
16210
16550
16890
17231
17571
17911
18251
18591
18931
19271
19611
19951
20291
20631
20971
21311
21651
21992
16497
16775
17053
17609
18166
18722
19278
19834
20390
20946
21502
22058
22614
23170
23726
24282
24838
25395
25951
26507
27063
27619
28175
28731
29287
29843
30399
30955
31511
32067
32624
33180
33736
34292
34848
35404
35960
25790
26225
26659
27529
28398
29267
30137
31006
31875
32744
33614
34483
35352
36222
37091
37960
38830
39699
40568
41437
42307
43176
44045
44915
45784
46653
47523
48392
49261
50130
51000
51869
52738
53608
54477
55346
56216
42247
42959
43671
45095
46519
47943
49367
50791
52215
53639
55063
56487
57911
59335
60759
62183
63607
65031
66455
67879
69303
70727
72151
73575
74999
76423
77847
79271
80695
82119
83543
84967
86391
87815
89239
90663
92087
60362
61379
62396
64431
66465
68500
70534
72569
74604
76638
78673
80707
82742
84776
86811
88846
90880
92915
94949
96984
99018
101053
103088
105122
107157
109191
111226
113261
115295
117330
119364
121399
123433
125468
127503
129537
131572
93654
95232
96811
99967
103124
106281
109437
112594
115751
118908
122064
125221
128378
131534
134691
137848
141005
144161
147318
150475
153632
156788
159945
163102
166258
169415
172572
175729
178885
182042
185199
188356
191512
194669
197826
200982
204139
118194
120186
122178
126162
130146
134130
138113
142097
146081
150065
154049
158033
162017
166001
169985
173968
177952
181936
185920
189904
193888
197872
201856
205839
209823
213807
217791
221775
142473
144874
147275
152077
156879
161682
166484
171286
176088
180890
185693
190495
195297
200099
204902
209704
214506
219308
224110
228913
233715
238517
243319
209493
213024
216554
223616
230677
237738
244799
251861
258922
265983
273044
280105
287167
294228
301289
308350
315412
322473
329534
336595
343656
350718
357779
Q
11.05
611
3056
R
16.0
885
4426
362637
368749
374860
387084
399307
411530
423753
435976
448199
460422
472645
484868
497092
509315
521538
533761
545984
558207
570430
582653
594877
607100
619323
525260
534112
542965
560669
578374
596078
613783
631487
649192
666896
684601
702305
720010
737714
755419
T
26.0
1439
7193
T2
27.872
1542
7711
NOTES
1. USCS - United States Customary System.
2. Upper temperature limit of JDS-E 500°F (260°C)
Capacities of saturated steam to be stated at an overpressure of 10% or 3 psi, whichever is greater, for valves
certified on steam.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
99
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E[2], USCS Units[1]
Set pressures 580 - 1780 psig (continued)
Set pressure
(psig)
1 psi incr.
5 psi incr.
D
0.110
6.1
30.5
E
0.196
10.8
54.2
F
0.307
17.0
85.0
G
0.503
27.8
139
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
P
0.785
1.287
1.838
2.853
3.60
4.34
6.38
43.5
71.2
102
158
199
240
353
217
356
509
789
996
1201
1765
1300
1320
1340
1360
1380
1400
1420
1440
1460
1480
1500
1520
1540
1560
1580
1600
1620
1640
1660
1680
1700
1720
1740
1760
1780
8006
8128
8249
8371
8493
8615
8737
8868
8999
9139
9271
9403
9535
9677
9810
9943
10086
10219
10363
10498
10642
10777
10923
11058
11205
14248
14465
14682
14899
15116
15333
15550
15783
16016
16266
16500
16735
16970
17223
17459
17696
17950
18188
18444
18683
18941
19181
19440
19681
19942
22332
22672
23012
23352
23692
24032
24372
24737
25102
25494
25861
26229
26597
26993
27364
27735
28134
28507
28908
29283
29687
30063
30469
30847
31256
36516
37072
37628
38184
38740
39296
39853
40449
41047
41687
42287
42889
43491
44139
44744
45351
46004
46613
47270
47882
48543
49158
49822
50440
51109
57085
57954
58823
59693
60562
61431
62301
63233
64167
65168
66107
67047
67989
69001
69948
70896
71917
72869
73896
74853
75886
76847
77886
78852
79897
93511
94935
96359
97783
99207
100631
102055
103583
105113
106753
108290
109830
111374
113032
114582
116135
117807
119368
121050
122617
124309
125884
127586
129168
130880
133606
135641
137675
139710
141745
143779
145814
147996
150183
152525
154722
156922
159127
161496
163711
165930
168319
170549
172952
175192
177609
179859
182291
184551
186997
Q
11.05
611
3056
R
16.0
885
4426
T
26.0
1439
7193
T2
27.872
1542
7711
207296
210453
213609
216766
219923
223080
226236
229622
233015
236649
240057
NOTES
1. USCS - United States Customary System.
2. Upper temperature limit of JDS-E 500°F (260°C)
Capacities of saturated steam to be stated at an overpressure of 10% or 3 psi, whichever is greater, for valves
certified on steam.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
100
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E[2], USCS Units[1]
Set pressures 1800 - 2900 psig
Set pressure
(psig)
1 psi incr.
5 psi incr.
D
0.110
6.1
30.5
E
0.196
10.8
54.2
F
0.307
17.0
85.0
G
0.503
27.8
139
1800
1820
1840
1860
1880
1900
1920
1940
1960
1980
2000
2020
2040
2060
2080
2100
2120
2140
2160
2180
2200
2220
2240
2260
2280
2300
2320
2340
2360
2380
2400
2420
2440
2460
2480
11341
11488
11636
11773
11922
12071
12221
12371
12510
12661
12813
12965
13117
13270
13424
13578
13745
13901
14056
14212
14382
14540
14697
14869
15028
15201
15376
15536
15711
15888
16065
16242
16421
16600
16779
20184
20447
20710
20954
21219
21484
21751
22018
22265
22534
22804
23074
23346
23618
23892
24166
24464
24740
25017
25295
25597
25877
26158
26464
26746
27055
27365
27651
27963
28276
28591
28907
29225
29543
29864
31635
32046
32459
32841
33256
33673
34090
34509
34896
35318
35741
36165
36590
37017
37446
37875
38342
38775
39209
39645
40119
40557
40997
41477
41920
42404
42889
43337
43826
44318
44811
45307
45804
46304
46805
51729
52401
53076
53701
54380
55060
55743
56429
57061
57751
58442
59136
59831
60529
61230
61932
62696
63404
64114
64826
65601
66318
67037
67822
68546
69337
70131
70863
71663
72467
73274
74084
74897
75714
76534
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
0.785
1.287
1.838 2.853
3.60
4.34
43.5
71.2
102
158
199
240
217
356
509
789
996
1201
80867
81918
82973
83949
85010
86075
87142
88214
89203
90280
91361
92445
93533
94624
95719
96817
98012
99118
100227
101340
102553
103674
104798
106024
107157
108393
109634
110778
112029
113285
114547
115813
117085
118362
119644
P
6.38
353
1765
Q
11.05
611
3056
R
16.0
885
4426
T
26.0
1439
7193
T2
27.872
1542
7711
132468
134190
135918
137518
139256
141000
142749
144504
146124
147889
149659
151435
153217
155005
156798
158597
160554
162365
164183
166006
167993
169829
171670
173680
175534
177559
179593
181467
183516
185574
187640
189715
191798
NOTES
1. USCS - United States Customary System.
2. Upper temperature limit of JDS-E 500°F (260°C)
Capacities of saturated steam to be stated at an overpressure of 10% or 3 psi, whichever is greater, for valves
certified on steam.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
101
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E[2], USCS Units[1] (continued)
Set pressures 1800 - 2900 psig
Set pressure
(psig)
1 psi incr.
5 psi incr.
D
0.110
6.1
30.5
E
0.196
10.8
54.2
F
0.307
17.0
85.0
G
0.503
27.8
139
2500
2520
2540
2560
2580
2600
2620
2640
2660
2680
2700
2720
2740
2760
2780
2800
2820
2840
2860
2880
2900
16960
17141
17339
17522
17721
17906
18107
18309
18512
18717
18922
19128
19335
19560
19769
19996
20225
20455
20686
20935
21169
30185
30508
30859
31185
31540
31868
32226
32586
32948
33311
33676
34043
34411
34812
35184
35589
35995
36404
36815
37260
37675
47309
47815
48366
48876
49432
49947
50508
51072
51639
52208
52781
53356
53933
54561
55144
55778
56416
57057
57701
58398
59049
77358
78185
79086
79920
80830
81671
82589
83511
84438
85369
86305
87245
88190
89216
90170
91207
92249
93297
94350
95490
96555
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
0.785
1.287
1.838 2.853
3.60
4.34
43.5
71.2
102
158
199
240
217
356
509
789
996
1201
P
6.38
353
1765
Q
11.05
611
3056
R
16.0
885
4426
T
26.0
1439
7193
T2
27.872
1542
7711
NOTES
1. USCS - United States Customary System.
2. Upper temperature limit of JDS-E 500°F (260°C)
Capacities of saturated steam to be stated at an overpressure of 10% or 3 psi, whichever is greater, for valves
certified on steam.
Capacities at 15 psig and above are certified by the National Board of Boiler and Pressure Vessel Inspectors
and in accordance with the ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
102
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E, JLTJBS-E AND JLTJDS-E, Metric Units
Set pressures 0.35 - 88 barg
Set pressure
(barg)
1 bar incr.
5 bar incr.
0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
D
71
0.8
4.2
1.4
1.5
1.5
1.5
1.6
1.6
1.7
2.4
4.1
5.8
7.5
9.2
10.8
12.5
14.2
15.9
17.6
19.3
21.0
22.6
24.3
26.0
27.7
29.4
31.1
32.8
34.5
36.1
37.8
39.5
41.2
E
126
1.5
7.5
F
198
2.4
11.8
G
325
3.8
19.2
H
506
6
30.1
Orifice letter designation and effective area, sq.mm.
J
K
L
M
N
P
Q
R
T
T2
V
W
830
1186
1841
2323
2800
4116
7129 10323 16774 17981 27218 39193
9.8
14.1
21.8
27.6
33.2
48.8
84.5 122.4
199
213.3 324.3 529.2
49.2
70.4 109.2 137.8
166
244.2 422.6 612.2 994.9 1066.4 1621.3 2646.1
2.4
2.4
2.5
2.6
2.6
2.7
2.8
2.8
2.9
3.0
4.3
7.3
10.3
13.3
16.3
19.3
22.3
25.3
28.3
31.3
34.3
37.3
40.3
43.3
46.3
49.3
52.4
55.4
58.4
61.4
64.4
67.4
70.4
73.4
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.1
4.2
4.3
4.4
4.5
4.6
4.7
6.8
11.5
16.2
20.9
25.6
30.3
35.0
39.7
44.4
49.2
53.9
58.6
63.3
68.0
72.7
77.4
82.1
86.8
91.5
96.2
100.0
105.0
110.0
115.0
5.4
5.6
5.8
6.0
6.1
6.3
6.5
6.7
6.8
7.0
7.2
7.4
7.5
7.7
11.2
18.9
26.6
34.3
41.9
49.6
57.3
65.0
72.7
80.4
88.1
95.8
103.0
111.0
118.0
126.0
134.0
141.0
149.0
157.0
165.0
172.0
180.0
188.0
8.5
8.8
9.1
9.4
9.6
9.9
10.2
10.4
10.7
11.0
11.3
11.5
11.8
12.1
17.5
29.5
41.6
53.6
65.6
77.6
89.7
101.0
113.0
125.0
137.0
149.0
161.0
173.0
185.0
197.0
209.0
221.0
233.0
246.0
258.0
270.0
282.0
294.0
14.0
14.5
14.9
15.4
15.8
16.2
16.7
17.1
17.6
18.0
18.5
18.9
19.4
19.8
28.8
48.4
68.1
87.8
107.0
127.0
146.0
166.0
186.0
206.0
225.0
245.0
265.0
284.0
304.0
324.0
343.0
363.0
383.0
402.0
422.0
442.0
462.0
481.0
20.0
20.7
21.3
22.0
22.6
23.2
23.9
24.5
25.2
25.8
26.4
27.1
27.7
28.4
41.1
69.2
97.3
125.0
153.0
181.0
209.0
238.0
266.0
294.0
322.0
350.0
378.0
406.0
435.0
463.0
491.0
519.0
547.0
575.0
603.0
632.0
660.0
688.0
33.1
34.1
35.1
36.1
37.1
38.1
39.1
40.0
41.0
42.0
43.0
44.0
63.9
107.0
151.0
194.0
238.0
282.0
325.0
369.0
413.0
456.0
500.0
544.0
587.0
631.0
675.0
718.0
762.0
806.0
849.0
893.0
936.0
980.0
1024.0
1067.0
44.3
45.5
46.8
48.0
49.3
50.6
51.8
53.1
54.3
55.6
80.6
135.0
190.0
245.0
300.0
355.0
411.0
466.0
521.0
576.0
631.0
686.0
741.0
796.0
851.0
906.0
962.0
1017.0
1072.0
1127.0
1182.0
1237.0
1292.0
1347.0
53.4
54.9
56.4
57.9
59.4
60.9
62.5
64.0
65.5
67.0
97.2
163.0
229.0
296.0
362.0
429.0
495.0
561.0
628.0
694.0
761.0
827.0
894.0
960.0
1026.0
1093.0
1159.0
1226.0
1292.0
1358.0
1425.0
1491.0
1558.0
1624.0
76.3
78.5
80.8
83.0
85.2
87.4
89.6
91.9
94.1
96.3
98.5
142.0
240.0
337.0
435.0
533.0
630.0
728.0
826.0
923.0
1021.0
1119.0
1216.0
1314.0
1412.0
1509.0
1607.0
1705.0
1802.0
1900.0
1998.0
2095.0
2193.0
2291.0
2388.0
120
124
128
132
136
139
143
147
151
155
159
162
166
170
247
415
585
754
923
1092
1261
1430
1599
1768
1937
2106
2275
2444
2613
2782
2951
3120
3289
3459
3628
3797
3966
4135
191
197
202
208
213
219
224
230
236
241
247
358
602
847
1092
1337
1582
1826
2071
2316
2561
2806
3051
3296
3540
3785
4030
4275
4520
4765
5010
5255
5499
5744
5989
320
329
338
347
356
365
374
383
392
401
582
979
1377
1775
2173
2571
2969
3367
3764
4162
343
352
362
372
382
391
401
411
420
430
624
1049
1476
1902
2329
2755
3182
3609
4035
4462
625
639
654
949
1595
2244
2892
3541
4189
4838
5487
6135
6784
1549
2604
3662
4721
5779
6838
7896
8955
10013
11071
Set pressure
(kPag)
100 kPa incr.
500 kPa incr.
35
40
45
50
55
60
65
70
75
80
85
90
95
100
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
4400
4600
4800
* Numbers marked bold = JOS-E only.
NOTE
1. Capacities below 2.0 bar set pressure are calculated at 0.2 bar overpressure.
* Capacity in standard cubic meters per minute of air at 16°C and 10% overpressure.
1
Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
103
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E, JLTJBS-E AND JLTJDS-E
Set pressures 0.35 - 88 barg (continued)
Set pressure
(barg)
1 bar incr.
5 bar incr.
D
71
0.8
4.2
E
126
1.5
7.5
F
198
2.4
11.8
G
325
3.8
19.2
H
506
6
30.1
Orifice letter designation and effective area, sq.mm.
J
K
L
M
N
P
Q
R
T
T2
V
W
830
1186
1841
2323
2800
4116
7129 10323 16774 17981 27218 39193
9.8
14.1
21.8
27.6
33.2
48.8
84.5 122.4
199
213.3 324.3 529.2
49.2
70.4 109.2 137.8
166
244.2 422.6 612.2 994.9 1066.4 1621.3 2646.1
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
42.9
44.6
46.3
47.9
49.6
51.3
53.0
54.7
56.4
58.1
59.7
61.4
63.1
64.8
66.5
68.2
69.9
71.5
73.2
74.9
76.4
79.4
82.4
85.4
88.4
91.4
94.4
97.4
100.0
103.0
106.0
109.0
112.0
115.0
118.0
121.0
124.0
127.0
130.0
133.0
119
124
129
133
138
143
147
152
157
162
166
171
176
180
185
190
195
199
204
209
195
203
211
218
226
234
241
249
257
265
272
280
288
295
303
311
318
326
334
341
306
318
330
342
354
366
378
390
402
414
426
438
450
462
474
486
498
510
522
534
501
521
540
560
580
599
619
639
659
678
698
718
737
757
777
796
816
836
855
875
716
744
772
800
829
857
885
913
941
969
997
1026
1054
1082
1110
1138
1166
1194
1222
1251
1111
1155
1198
1242
1286
1329
1373
1417
1460
1504
1548
1591
1635
1679
1722
1766
1810
1853
1897
1941
1402
1458
1513
1568
1623
1678
1733
1788
1843
1898
1953
2009
2064
1691
1757
1823
1890
1956
2023
2089
2156
2222
2288
2486
2584
2681
2779
2877
2974
3072
3170
3267
3365
4304
4473
4642
4811
4980
5149
5318
5487
5656
5825
6234
6479
6724
6969
7214
Set pressure
(kPag)
100 kPa incr.
500 kPa incr.
5000
5200
5400
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
8200
8400
8600
8800
NOTE
1. Capacities below 2.0 bar set pressure are calculated at 0.2 bar overpressure.
* Capacity in standard cubic meters per minute of air at 16°C and 10% overpressure.
1
Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
104
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E, JLTJBS-E AND JLTJDS-E, Metric Units
Set pressures 90 - 410 barg
Set pressure
(barg)
1 bar incr.
5 bar incr.
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
146
148
150
160
170
180
190
D
71
0.8
4.2
E
126
1.5
7.5
F
198
2.4
11.8
G
325
3.8
19.2
H
506
6
30.1
76.6
78.3
80.0
81.7
83.4
85.0
86.7
88.4
90.1
91.8
93.5
95.2
96.8
98.5
100.0
101.0
103.0
105.0
107.0
108.0
110.0
112.0
113.0
115.0
117.0
118.0
120.0
122.0
123.0
125.0
127.0
135.0
144.0
152.0
160.0
136
139
142
145
148
151
154
157
160
163
166
169
172
175
178
181
184
187
190
193
196
199
202
205
208
211
214
217
220
223
226
241
256
271
286
213
218
223
227
232
237
242
246
251
256
260
265
270
274
279
284
289
293
298
303
307
312
317
322
326
331
336
340
345
350
354
378
401
425
449
349
357
365
372
380
388
395
403
411
418
426
434
441
449
457
465
472
480
488
495
503
511
518
526
534
541
549
557
564
572
580
618
657
695
734
546
558
570
582
594
606
618
630
642
654
666
678
690
702
714
726
738
750
763
775
787
799
811
823
835
847
859
871
883
895
907
967
1027
1087
1147
Orifice letter designation and effective area, sq.mm.
J
K
L
M
N
P
Q
830
1186
1841
2323
2800
4116
7129
9.8
14.1
21.8
27.6
33.2
48.8
84.5
49.2
70.4 109.2 137.8
166
244.2 422.6
895
915
934
954
974
993
1013
1033
1052
1072
1092
1112
1131
1151
1171
1190
1210
1230
1249
1269
1289
1308
1328
1348
1368
1387
1407
1427
1446
1466
1486
1584
1683
1781
1279
1307
1335
1363
1391
1419
1448
1476
1504
1532
1560
1588
1616
1645
1673
1701
1729
1757
1785
1813
1842
1870
1898
1926
1954
1982
2010
2039
2067
2095
2123
1984
2028
2072
2115
2159
2203
2246
R
T
T2
V
10323 16774 17981 27218
122.4
199
213.3 324.3
612.2 994.9 1066.4 1621.3
Set pressure
(kPag)
100 kPa incr.
500 kPa incr.
9000
9200
9400
9600
9800
10000
10200
10400
10600
10800
11000
11200
11400
11600
11800
12000
12200
12400
12600
12800
13000
13200
13400
13600
13800
14000
14200
14400
14600
14800
15000
16000
17000
18000
19000
* Capacity in standard cubic meters per minute of air at 16°C and 10% overpressure.
1
Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
105
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
AIR CAPACITIES - Series JOS-E, JBS-E, JDS-E, JLTJOS-E, JLTJBS-E AND JLTJDS-E, Metric Units
Set pressures 90 - 410 barg (continued)
Set pressure
(barg)
1 bar incr.
5 bar incr.
D
71
0.8
4.2
E
126
1.5
7.5
F
198
2.4
11.8
G
325
3.8
19.2
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
169
177
186
194
203
211
219
228
236
245
253
262
270
279
287
295
304
312
321
329
338
346
301
316
331
346
361
376
391
406
421
436
451
466
481
496
511
526
541
556
571
586
601
616
472
496
519
543
566
590
613
637
660
684
707
731
754
778
801
772
811
849
888
926
964
H
506
6
30.1
Orifice letter designation and effective area, sq.mm.
J
K
L
M
N
P
Q
830
1186
1841
2323
2800
4116
7129
9.8
14.1
21.8
27.6
33.2
48.8
84.5
49.2
70.4 109.2 137.8
166
244.2 422.6
R
T
T2
V
10323 16774 17981 27218
122.4
199
213.3 324.3
612.2 994.9 1066.4 1621.3
Set pressure
(kPag)
100 kPa incr.
500 kPa incr.
20000
21000
22000
23000
24000
25000
26000
27000
28000
29000
30000
31000
32000
33000
34000
35000
36000
37000
38000
39000
40000
41000
* Capacity in standard cubic meters per minute of air at 16°C and 10% overpressure.
1
Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
106
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, Metric Units
Differential pressures ∆P[1], 1 - 80 bar[2]
Differential
pressure
∆P - bar
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
D
71
45
63
77
89
100
109
118
126
134
141
148
154
161
167
173
178
184
189
194
199
204
209
214
219
223
227
232
236
240
244
248
252
256
260
264
268
271
275
279
E
126
80
112
137
159
177
194
210
225
238
251
263
275
286
297
308
318
328
337
346
355
364
373
381
389
397
405
413
421
428
435
442
450
457
463
470
477
483
490
496
F
198
124
176
215
249
278
305
329
352
374
394
413
431
449
466
482
498
514
529
543
557
571
584
598
610
623
635
647
659
671
682
694
705
716
727
737
748
758
768
778
G
325
203
288
353
407
455
499
539
576
611
644
676
706
735
762
789
815
840
865
888
911
934
956
977
998
1019
1039
1059
1078
1098
1116
1135
1153
1171
1188
1206
1223
1240
1256
1273
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
506
830
1186
1841
2323
2800
318
522
746
1157
1460
1760
450
738
1055
1636
2065
2490
552
904
1292
2004
2530
3049
637
1044
1492
2314
2921
3521
712
1167
1668
2588
3266
3937
780
1278
1827
2835
3578
4313
843
1381
1973
3062
3864
4658
901
1476
2110
3273
4131
4980
956
1566
2238
3472
4382
5282
1007
1651
2359
3660
4619
5568
1057
1731
2474
3838
4844
5840
1104
1808
2584
4009
5060
6099
1149
1882
2689
4173
5266
6348
1192
1953
2791
4330
5465
6588
1234
2022
2889
4482
5657
6819
1275
2088
2984
4629
5843
7043
1314
2152
3075
4772
6022
7260
1352
2215
3165
4910
6197
7470
1389
2275
3251
5045
6367
7675
1425
2335
3336
5176
6532
7874
1460
2392
3418
5304
6694
8069
1495
2449
3499
5429
6851
8259
1528
2504
3577
5551
7005
8444
1561
2557
3654
5670
7156
8626
1593
2610
3730
5787
7303
8804
1625
2662
3804
5902
7448
8978
1656
2713
3876
6014
7590
9149
1686
2762
3947
6124
7729
9317
1716
2811
4017
6233
7866
9482
1745
2859
4086
6339
8001
9644
1774
2907
4153
6444
8133
9804
1803
2953
4220
6547
8263
9960
1831
2999
4285
6649
8391
10115
1858
3044
4350
6749
8517
10267
1885
3089
4413
6847
8642
10417
1912
3132
4476
6944
8764
10565
1938
3176
4537
7040
8885
10710
1964
3218
4598
7135
9004
10854
1990
3260
4658
7228
9122
10996
P
4116
2589
3661
4484
5178
5789
6342
6850
7323
7767
8187
8587
8969
9335
9687
10027
10356
10675
10984
11285
11579
11865
12144
12417
12684
12945
13202
13453
13700
13943
14181
14415
14646
14873
15097
15317
15535
15749
15960
16169
Q
7129
4481
6338
7762
8963
10021
10978
11858
12676
13445
14173
14864
15525
16159
16769
17358
17927
18479
19015
19536
20043
20538
21022
21494
21956
22409
22853
23288
23716
24135
24548
24954
25353
25746
26133
26515
26891
27262
27628
27989
R
10323
6491
9180
11244
12983
14516
15901
17175
18361
19475
20528
21530
22488
23406
24290
25142
25967
26766
27542
28297
29032
29749
30449
31133
31803
32459
33101
33732
34351
34959
35557
36144
36723
37292
37853
38406
38950
39488
40018
40541
T
16774
10550
14920
18273
21100
23591
25843
27913
29841
31651
33363
34991
36547
38040
39475
40861
42201
43500
44761
45988
47182
48348
49485
50597
Differential
pressure
∆P - kPa
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
NOTES
1. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
2. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in liters per minute of water at 21°C and 10% overpressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
107
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, Metric Units
Differential pressures ∆P[1], 1 - 80 bar[2] (continued)
Differential
pressure
∆P - bar
40
41
42
43
44
45
46
47
48
49
50
52
54
56
58
60
62
64
66
68
70
72
74
76
78
80
D
71
282
286
289
293
296
299
303
306
309
312
316
322
328
334
340
346
352
357
363
368
374
379
384
389
394
399
E
126
503
509
515
521
527
533
539
545
551
556
562
573
584
595
605
616
626
636
646
656
665
675
684
693
702
711
F
198
788
798
808
817
827
836
845
854
863
872
881
899
916
933
949
965
981
997
1013
1028
1043
1058
1072
1087
1101
1115
G
325
1289
1305
1321
1337
1352
1367
1382
1397
1412
1427
1441
1470
1498
1525
1552
1579
1605
1631
1656
1681
1705
1730
1754
1777
1800
1823
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
506
830
1186
1841
2323
2800
2015
3302
4718
7320
9238
11136
2041
3343
4776
7411
9353
11274
2065
3383
4834
7501
9467
11411
2090
3423
4892
7590
9579
11546
2114
3463
4948
7677
9689
11680
2138
3502
5004
7764
9799
11812
2161
3541
5059
7850
9907
11942
2185
3579
5114
7935
10014
12071
2208
3617
5168
8019
10120
12199
2231
3655
5222
8102
10225
12325
2253
3692
5275
8184
10329
12451
2298
3765
5379
8346
10533
12697
2342
3836
5482
8505
10734
12939
2385
3907
5582
8661
10931
13177
2427
3976
5681
8815
11125
13410
2469
4044
5778
8965
11315
13639
2509
4111
5874
9114
11502
13864
2550
4177
5968
9259
11686
14086
2589
4241
6060
9403
11867
14305
2628
4305
6151
9544
12045
14520
2666
4368
6241
9684
12221
14732
2704
4430
6330
9821
12395
14941
2741
4491
6417
9957
12566
15147
2778
4551
6503
10090
12734
2815
4611
6588
10222
12901
2850
4670
6672
10352
13065
P
4116
16375
16578
16779
16978
17174
17368
17560
17750
17938
18124
18308
18670
19026
19375
19718
20055
20387
20713
21034
21350
21662
21969
22272
Q
7129
28346
28698
29046
29389
29729
30065
30397
30726
31051
31373
31691
32319
32935
33539
34133
34716
35290
35855
36411
36958
37498
38030
38554
R
10323
41057
41567
42071
42569
43061
43548
44029
44505
44976
45442
45904
46813
47704
48580
49440
50285
T
16774
Differential
pressure
∆P - kPa
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5200
5400
5600
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
8000
NOTES
1. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
2. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in liters per minute of water at 21°C and 10% overpressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
108
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, Metric Units
Differential pressures ∆P[1], 82 - 455 BAR[2]
Differential
pressure
∆P - bar
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
146
148
150
160
170
180
190
D
71
404
409
414
419
424
428
433
438
442
447
451
455
460
464
468
473
477
481
485
489
493
497
501
505
509
513
517
521
525
528
532
536
540
543
547
565
582
599
616
E
126
720
729
737
746
754
763
771
779
787
795
803
811
819
826
834
842
849
856
864
871
878
885
893
900
907
914
920
927
934
941
948
954
961
967
974
1006
1037
1067
1096
F
198
1129
1142
1156
1169
1182
1196
1208
1221
1234
1246
1259
1271
1283
1295
1307
1319
1331
1343
1354
1365
1377
1388
1399
1410
1421
1432
1443
1454
1464
1475
1485
1496
1506
1517
1527
1577
1625
1672
1718
G
325
1846
1868
1890
1912
1934
1955
1976
1997
2018
2038
2059
2079
2099
2118
2138
2157
2177
2196
2214
2233
2252
2270
2288
2306
2324
2342
2360
2377
2395
2412
2429
2446
2463
2480
2497
2579
2658
2735
2810
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
506
830
1186
1841
2323
2800
2886
4728
6755
10481
13228
2921
4785
6837
10608
13388
2955
4842
6918
10734
2990
4898
6998
10858
3023
4953
7077
10980
3057
5008
7155
11102
3090
5062
7233
11222
3123
5115
7309
11341
3155
5168
7385
11458
3187
5221
7460
11574
3219
5273
7534
11690
3250
5324
7608
11804
3281
5375
7680
11917
3312
5426
7752
12029
3343
5476
7824
12139
3373
5525
7895
12249
3403
5575
7965
12358
3433
5623
8034
3462
5671
8103
3491
5719
8172
3520
5767
8240
3549
5814
8307
3577
5861
8374
3606
5907
8440
3634
5953
8506
3662
5999
8571
3689
6044
8635
6089
8700
3717
3744
6133
8763
3771
6178
8827
3798
6222
8889
3825
6265
8952
3851
6309
9014
3877
6352
9075
3903
6394
9136
4031
6604
9436
4156
6807
4276
7005
4393
7197
P
4116
Q
7129
R
10323
T
16774
Differential
pressure
∆P - kPa
8200
8400
8600
8800
9000
9200
9400
9600
9800
10000
10200
10400
10600
10800
11000
11200
11400
11600
11800
12000
12200
12400
12600
12800
13000
13200
13400
13600
13800
14000
14200
14400
14600
14800
15000
16000
17000
18000
19000
NOTES
1. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
2. See pages 25 to 72 for minimum and maximum set pressure limits.
* Capacity in liters per minute of water at 21°C and 10% overpressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
109
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
WATER CAPACITIES - Series JLTJOS-E, JLTJBS-E and JLTJDS-E, Metric Units
Differential pressures ∆P[1], 82 - 455 BAR[2] (continued)
Differential
pressure
∆P - bar
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
455
D
71
632
647
663
677
692
706
720
734
748
761
774
787
799
812
824
836
848
859
871
882
894
905
916
927
937
948
953
E
126
1125
1152
1180
1206
1232
1257
1282
1307
1331
1354
1378
1400
1423
1445
1467
1488
1509
1530
1550
1571
1591
1611
1630
1649
1668
1687
1697
F
198
1763
1807
1849
1891
1931
1971
2010
2048
2086
2123
2159
2195
2230
2265
2299
2332
2365
2398
G
325
2883
2954
3024
3092
3158
3223
3287
3350
3411
Orifice letter designation and effective area, sq.in.
H
J
K
L
M
N
506
830
1186
1841
2323
2800
4507
7384
P
4116
Q
7129
R
10323
T
16774
Differential
pressure
∆P - kPa
20000
21000
22000
23000
24000
25000
26000
27000
28000
29000
30000
31000
32000
33000
34000
35000
36000
37000
38000
39000
40000
41000
42000
43000
44000
45000
45500
NOTES
1. Differential pressure (∆P) equals inlet pressure (set pressure plus overpressure) at flowing conditions minus
back pressure.
2. See pages 22 to 55 for minimum and maximum set pressure limits.
* Capacity in liters per minute of water at 21°C and 10% overpressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
110
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E, Metric Units Set Pressures 0.35 - 76 barg
Set pressure
(barg)
1 bar incr.2
5 bar incr.2
0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
22
24
26
28
30
32
34
36
38
D
71
E
126
F
198
G
325
H
506
J
830
40
201
71
357
112
559
159
164
169
174
180
185
190
195
200
205
210
215
220
225
327
438
550
662
774
886
997
1109
1221
1333
1445
1557
1669
1781
1892
2004
2116
2228
2340
2564
2787
3011
3235
3459
3682
3906
4130
4353
183
915
261
269
277
286
294
302
311
319
327
335
344
352
360
369
535
717
900
1083
1266
1448
1631
1814
1997
2180
2363
2546
2729
2912
3095
3278
3461
3643
3826
4192
4558
4924
5290
5656
6021
6387
6753
7119
286
1430
408
421
434
447
460
473
486
499
512
525
538
551
564
577
837
1121
1407
1693
1979
2265
2551
2836
3122
3408
3694
3980
4266
4552
4838
5124
5410
5696
5982
6554
7126
7698
8270
8841
9413
9985
10557
11129
468
2342
668
690
711
732
753
775
796
817
839
860
881
902
924
945
1371
1836
2305
2773
3242
3710
4178
4647
5115
5584
6052
6520
6989
7457
7926
8394
8863
9331
9799
10736
11673
12610
13547
14483
15420
16357
17294
18231
70.0
71.8
73.6
75.4
77.3
79.1
80.9
117.0
157.0
197.0
237.0
277.0
317.0
357.0
397.0
437.0
478.0
518.0
558.0
598.0
638.0
678.0
718.0
758.0
798.0
839.0
919.0
999.0
1079.0
1159.0
1240.0
1320.0
1400.0
1480.0
1560.0
114
118
121
124
127
131
134
137
140
144
208
279
351
422
494
565
636
708
779
850
922
993
1065
1136
1207
1279
1350
1421
1493
1635
1778
1921
2064
2206
2349
2492
2635
2777
Orifice letter designation and effective area, sq.mm.
K
L
M
N
P
Q
1186
1841
2323
2800
4116
7129
669
3346
955
985
1016
1046
1077
1107
1137
1168
1198
1229
1259
1290
1320
1350
1959
2624
3293
3962
4632
5301
5970
6639
7309
7978
8647
9316
9986
10655
11324
11993
12663
13332
14001
15340
16678
18017
19355
20694
22032
23371
24709
26048
1038
5192
1310
6552
1580
7898
2323
11614
1576
1623
1671
1718
1765
1812
1859
1907
1954
2001
2048
2095
3039
4071
5110
6148
7186
8225
9263
10302
11340
12378
13417
14455
15493
16532
17570
18609
19647
20685
21724
23800
25877
27954
30031
32107
34184
36261
38338
40414
2109
2168
2228
2287
2347
2406
2466
2526
2585
2645
3836
5138
6449
7759
9070
10380
11691
13001
14312
15622
16932
18243
19553
20864
22174
23485
24795
26106
27416
30037
32658
35279
37900
40521
43142
45763
48383
51004
2542
2614
2685
2757
2829
2901
2973
3044
3116
3188
4624
6194
7774
9353
10933
12512
14092
15672
17251
18831
20411
21990
23570
25150
26729
28309
29889
31468
33048
36207
39366
42526
45685
48844
52004
55163
58322
61481
3632
3738
3843
3949
4054
4160
4266
4371
4477
4582
4688
6800
9108
11431
13753
16076
18399
20721
23044
25367
27690
30012
32335
34658
36980
39303
41626
43949
46271
48594
53239
57885
62530
67176
71821
76467
81112
85758
90403
4021
20103
5739
5922
6105
6288
6470
6653
6836
7019
7202
7384
7567
7750
7933
8115
11770
15766
19787
23807
27828
31849
35870
39890
43911
47932
51952
55973
59994
64014
68035
72056
76076
80097
84118
92159
100200
108242
116283
124324
132366
140407
148448
156490
R
10323
T
16774
T2
17981
V
27218
W
39193
5824
29119
9465
47323
10145
50726
15424
77120
25173
125864
45155
60483
75907
91332
106756
122180
137604
153028
168452
183876
199300
214724
230148
245572
260996
276421
291845
307269
322693
73695
98712
123884
149057
174230
199403
224575
249748
274921
300093
325266
350439
375612
400784
425957
451130
476303
501475
526648
9372
15232
16327
9637
15662
16789
9902
16093
17250
10167
16523
17711
10431
16953
18172
10696
17383
18633
10961
17813
19094
11225
18244
19555
11490
18674
20017
11755
19104
20478
17049
27708
29701
22837
37114
39783
28660
46579
49928
34484
56043
60073
40308
65508
70218
46131
74973
80363
51955
84437
90509
57779
93902 100654
63603 103367 110799
69426 112831 120944
75250 122296 131089
81074 131760 141234
86898 141225 151380
92721 150690 161525
98545 160154 171670
104369 169619 181815
110192 179084 191960
116016 188548 202105
121840 198013 212251
133487
145135
156782
168430
180077
191725
203372
215019
226667
* Numbers marked bold = JOS-E only.
NOTES
1. Capacities below 2.0 bar set pressure are calculated at 0.2 at bar overpressure.
2. Not valid below 2.0 bar set pressure.
* Capacity in kilograms per hour of steam at 10% overpressure.
1
Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
111
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E, Metric Units Set Pressures 0.35 - 76 barg (continued)
Set pressure
(barg)
1 bar incr.2
5 bar incr.2
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
74
76
D
71
E
126
F
198
G
325
H
506
J
830
40
201
1641
1721
1801
1881
1961
2042
2122
2202
2282
2362
2443
2523
2603
2683
2763
2844
2924
3004
3084
71
357
2920
3063
3206
3348
3491
3634
3777
3919
4062
4205
4348
4490
4633
4776
4919
5061
5204
5347
5490
112
559
4577
4801
5025
5248
5472
5696
5920
6143
6367
6591
6814
7038
7262
7486
7709
7933
8157
8381
8604
183
915
7485
7851
8216
8582
8948
9314
9680
10046
10411
10777
11143
11509
11875
12241
12606
12972
13338
13704
14070
286
1430
11701
12273
12845
13417
13988
14560
15132
15704
16276
16848
17420
17992
18564
19136
19707
20279
20851
21423
21995
468
2342
19168
20104
21041
21978
22915
23852
24789
25725
26662
27599
28536
29473
30409
31346
32283
33220
34157
35094
36030
Orifice letter designation and effective area, sq.mm.
K
L
M
N
P
Q
1186
1841
2323
2800
4116
7129
669
3346
27386
28725
30063
31402
32740
34079
35417
36756
38094
39433
40771
42110
43448
44787
46125
47464
48802
50141
51479
1038
5192
42491
44568
46645
48721
50798
52875
54952
57028
59105
61182
63259
65335
67412
69489
71566
73642
75719
77796
79873
1310
6552
53625
56246
58867
61488
64109
66730
69351
71972
74593
77214
79834
82455
85076
87697
90318
92939
95560
98181
1580
7898
64641
67800
70959
74119
77278
80437
83596
86756
89915
93074
96234
99393
102552
105711
108871
2323
11614
95048
99694
104339
108985
113630
118276
122921
127566
132212
136857
141503
146148
150794
155439
160085
4021
20103
164531
172572
180614
188655
196696
204738
212779
220821
228862
236903
244945
252986
261027
269069
277110
R
10323
T
16774
T2
17981
V
27218
W
39193
5824
29119
238314
249962
261609
273257
284904
296552
308199
319846
331494
343141
9465
47323
10145
50726
15424
77120
25173
125864
NOTES
1. Capacities below 2.0 bar set pressure are calculated at 0.2 at bar overpressure.
2. Not valid below 2.0 bar set pressure.
* Capacity in kilograms per hour of steam at 10% overpressure.
1
Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
112
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E, Metric Units Set Pressures 78 - 200 barg
Set pressure
(barg)
1 bar incr.2
5 bar incr.2
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134
136
138
140
142
144
146
148
150
152
154
156
158
Orifice letter designation and effective area, sq.mm.
J
K
L
M
N
P
830
1186
1841
2323
2800
4116
D
71
E
126
F
198
G
325
H
506
40
201
3165
3245
3325
3405
3485
3566
3646
3726
3806
3886
3967
4055
4139
4228
4317
4407
4497
4587
4677
4768
4864
4956
5047
5140
5237
5330
5428
5522
5621
5721
5816
5917
6018
6119
6222
6324
6433
6537
6647
6752
6864
71
357
5632
5775
5918
6061
6203
6346
6489
6632
6774
6917
7060
7217
7367
7526
7684
7844
8003
8164
8325
8487
8657
8820
8983
9147
9321
9486
9662
9828
10005
10183
10351
10530
10710
10891
11073
11256
11450
11634
11831
12017
12216
112
559
8828
9052
9275
9499
9723
9947
10170
10394
10618
10842
11065
11312
11547
11795
12044
12294
12544
12796
13048
13301
13569
13824
14080
14337
14609
14868
15143
15404
15681
15959
16224
16505
16787
17070
17355
17641
17946
18235
18543
18835
19146
183
915
14435
14801
15167
15533
15899
16265
16630
16996
17362
17728
18094
18497
18882
19287
19694
20102
20512
20923
21336
21750
22187
22605
23023
23444
23889
24312
24761
25188
25641
26097
26529
26988
27449
27913
28379
28847
29345
29817
30321
30798
31307
286
1430
22567
23139
23711
24283
24854
25426
25998
26570
27142
27714
28286
28915
29518
30152
30787
31426
32066
32709
33354
34001
34685
35337
35992
36649
37345
38007
38709
39376
40085
40796
41472
42190
42911
43636
44364
45096
45874
46613
47400
48146
48942
468
2342
36967
37904
38841
39778
40715
41651
42588
43525
44462
45399
46336
47367
48354
49392
50433
51479
52528
53581
54638
55698
56818
57887
58959
60036
61175
62260
63410
64503
65663
66829
67935
69111
70293
71480
72673
73872
75147
76357
77646
78869
80172
669
3346
52818
54156
55495
56833
58172
59510
60849
62187
63526
64864
66203
67676
69087
70570
72058
73551
75051
76555
78065
79580
81180
82707
84239
85777
87405
88955
90598
92160
1038
5192
81949
84026
86103
88180
90256
92333
94410
96487
98563
100640
102717
105003
107191
1310
6552
1580
7898
2323
11641
Q
7129
R
10323
T
16774
T2
17981
4021
20103
5824
29119
9465
47323
10145
50726
* Capacity in kilograms per hour of steam at 10% overpressure. Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
113
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SATURATED STEAM CAPACITIES, UNFIRED PRESSURE VESSEL SERVICE - Series JOS-E, JBS-E and JDS-E, Metric Units Set Pressures 78 - 200 barg (continued)
Orifice letter designation and effective area, sq.mm.
J
K
L
M
N
P
830
1186
1841
2323
2800
4116
468
669
1038
1310
1580
2323
2342
3346
5192
6552
7898
11641
Set pressure
(barg)
1 bar incr.2
5 bar incr.2
D
71
40
201
E
126
71
357
F
198
112
559
G
325
183
915
H
506
286
1430
160
162
164
166
168
170
172
174
176
178
180
182
184
186
188
190
192
196
200
6976
7089
7202
7316
7431
7553
7669
7793
7918
8043
8169
8304
8432
8568
8712
8851
8997
9295
9604
12415
12616
12818
13021
13226
13443
13650
13870
14092
14315
14540
14779
15006
15249
15506
15752
16014
16542
17093
19459
19774
20090
20409
20729
21070
21394
21739
22087
22436
22788
23163
23520
23899
24303
24689
25098
25927
26791
31819
32334
32851
33372
33895
34453
34982
35547
36115
36687
37263
37875
38459
39080
39740
40370
41040
42395
43808
49742
50546
51356
52169
52988
53859
Q
7129
4021
20103
R
10323
5824
29119
T
16774
9465
47323
T2
17981
10145
50726
81483
82801
84126
85459
86799
* Capacity in kilograms per hour of steam at 10% overpressure. Valve discharging to atmospheric pressure.
Capacities certified by the National Board of Boiler and Pressure Vessel Inspectors and in accordance with the
ASME Boiler and Pressure Vessel Code, Section VIII and Section XIII.
114
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
Equivalents and conversion factors
Atmospheres
14.70
Atmospheres
1.033
Atmospheres
29.92
Atmospheres
760.0
Atmospheres
407.2
Atmospheres
33.93
Atmospheres
1.013
Atmospheres
101.3
Barrels
42.00
Bars
14.50
Bars
1.020
Bars
100.0
Centimeters
0.3937
Centimeters
0.03281
Centimeters
0.010
Centimeters
0.01094
Cubic centimeters
0.06102
Cubic feet
7.481
Cubic feet
0.1781
Cubic feet per minute
0.02832
Cubic feet per second
448.8
Cubic inches
16.39
Cubic inches
0.004329
Cubic meters
264.2
Cubic meters per hour
4.403
Cubic meters per minute
35.31
Standard cubic feet per min.
60.00
Standard cubic feet per min.
1440
Standard cubic feet per min.
0.02716
Standard cubic feet per min.
1.630
Standard cubic feet per min.
39.11
Standard cubic feet per min.
0.02832
Standard cubic feet per min.
1.699
Standard cubic feet per min.
40.78
Feet
0.3048
Feet
0.3333
Feet
30.48
Feet of water
0.8818
Feet of water
0.4335
Gallons (U.S.)
3785
0.1337
Gallons (U.S.)
Gallons (U.S.)
231.0
Gallons (Imperial)
277.4
Gallons (U.S.)
0.8327
Gallons (U.S.)
3.785
Gallons of water
8.337
Gallons of liquid per minute
500 x Sp. Gr.
per minute
Gallons per minute
0.002228
Gallons per minute
227.0 x SG
Gallons per minute
0.06309
Gallons per minute
3.785
Gallons per minute
0.2271
Grams
0.03527
Inches
2.540
Inches
0.08333
Inches
0.0254
Inches
0.02778
Inches of mercury
1.133
Inches of mercury
0.4912
Inches of mercury
0.03342
Inches of mercury
0.03453
Inches of water
0.03613
Inches of water
0.07355
Pounds per square inch
Kilograms per sq. cm
Inches of mercury
Millimeters of mercury
Inches of water
Feet of water
Bars
KiloPascals
Gallons (U.S.)
Pounds per square inch
Kilograms per sq. cm
KiloPascals
Inches
Feet
Meters
Yards
Cubic inches
Gallons
Barrels
Cubic meters per minute
Gallons per minute
Cubic centimeters
Gallons
Gallons
Gallons per minute
Cubic feet per minute
Standard cubic ft. per hr
Standard cubic ft. per day
Nm3/min.
Nm3/hr.
Nm3/day
Sm3/min.
Sm3/hr.
Sm3/day
Meters
Yards
Centimeters
Inches of mercury
Pounds per square inch
Cubic centimeters
Cubic feet
Cubic inches
Cubic inches
Gallons (Imperial)
Liters
Pounds (at 60°F)
Pounds per hour liquid
(at 60°F)
Cubic feet per second
Kilograms per hour
Liters per second
Liters per minute
M3/hr.
Ounces
Centimeters
Feet
Meters
Yards
Feet of water
Pounds per square inch
Atmospheres
Kilograms per sq. cm
Pounds per sq. in.
Inches of mercury
Kilograms
Kilograms
Kilograms
Kilograms per minute
Kilograms per sq. cm
Kilograms per sq. cm
Kilograms per sq. cm
Kilograms per cubic meter
KiloPascals
KiloPascals
KiloPascals
Liters
Liters
Liters
Liters per hour
Meters
Meters
Meters
Meters
Pounds
Pounds
Pounds
Pounds
Pounds
Pounds
Pounds per hour
Pounds per hour
Pounds per hour liquid
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Pounds per sq. inch
Specific gravity
(of gas or vapors)
Square centimeter
Square inch
Square inch
SSU
SSU
Water (cubic feet)
Temperature:
Centigrade
Kelvin
Fahrenheit
Fahrenheit +460°
Fahrenheit (°F+460) 5/9
2.205
0.001102
35.27
132.3
14.22
0.9678
28.96
16.018
0.1450
0.0100
0.01020
0.03532
1000
0.2642
0.004403
3.281
1.094
100.0
39.37
0.1199
453.6
0.0005
0.4536
0.0004536
16.00
6.323/M.W.
0.4536
0.002/Sp.Gr.
27.68
2.307
2.036
0.07031
0.0680
51.71
0.7032
0.06895
6.895
28.97
Pounds
Short tons (2000 lbs.)
Ounces
Pounds per hour
Pounds per sq. in.
Atmospheres
Inches of mercury
Pounds per cubic foot
Pounds per sq. in.
Bars
Kilograms per sq. cm
Cubic feet
Cubic centimeters
Gallons
Gallons per minute
Feet
Yards
Centimeters
Inches
Gallons H2O at 60°F (U.S.)
Grams
Short tons (2000 lbs.)
Kilograms
Metric tons
Ounces
Cubic feet per minute
Kilograms per hour
Gallons per minute liquid (at 60°F)
Inches of water
Feet of water
Inches of mercury
Kilograms per sq. cm
Atmospheres
Millimeters of mercury
Meters of water
Bar
KiloPascals
Molecular weight (of gas or vapors)
0.1550
6.4516
645.16
0.2205 x SG
0.2162
62.4
Square inch
Square centimeter
Square millimeter
Centipoise
Centistoke
Pounds (at 60°F)
=
=
=
=
=
5/9 (Fahrenheit - 32)
Centigrade + 273
9/5 (Centigrade) + 32
Rankine
Kelvin
115
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SERIES JOS-E-B/JBS-E-B/JDS-E-B BLOCK BODY PRESSURE RELIEF VALVE
Series JOS-E-B/JBS-E-B/JDS-E-B BlockBody valves provide greater capacity and can be set
at pressures and temperatures significantly higher than the traditional design cast steel API
Standard 526 relief valves. One single BlockBody installation has satisfied the capacity of twelve
smaller valves.
The BlockBody design also adds significantly to the scope of materials that can be provided
in accordance with ASME Code Section VIII and Section XIII by adding a wide array of wrought
materials. Utilizing the BlockBody design, higher material integrity is offered which can minimize
non-destructive examination (NDE) requirements.
BlockBody relief valves can be designed to unconventional sizes which can be an advantage
when retrofitting to existing systems. Pressure relief valve outlet sizes can be increased beyond
API standards to eliminate outlet piping reducers and mitigate built-up back pressure in the
downstream piping.
FEATURES
•
•
•
•
•
•
•
•
•
Geometrically designed body and bonnet
eliminates the need for multiple, smaller
orifice cast steel API Standard 526
pressure relief valves.
Provides significant weight reduction
when compared to multiple smaller
orifice PRVs.
Significantly reduces inlet and discharge
piping costs.
Reduced downtime and maintenance.
Fewer spare parts required.
Specific inlet/outlet flange configurations
and combinations available with unique
center-to-face dimensions to meet
existing systems.
Forged body standard construction
increases choice of materials available for
harsh or corrosive service applications.
Suitable for back pressure applications
considerably beyond CI 300 service.
Reliable and field proven design.
116
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
THE BLOCKBODY™ SCOPE OF DESIGN
Eyebolts to
facilitate installation
Bolted cap
construction
Internals based on
standard design
Valve superstructure
(body, bonnet and cap)
manufactured from
solid forged blocks
Fully rated outlets up to
2500 lb. available
No welding used in
construction
Geometric reduced main
valve block for additional
weight saving
Interference fitted
inlet studs
Full nozzle design for
maximum tightness
JBS-E-B
BLOCKBODY DESIGN
TYPICAL MATERIALS OF CONSTRUCTION
Typically, the valve housing (body, bonnet and
cap) is manufactured from forged or other
wrought materials. The body and/or bonnet are
manufactured from a geometrically reduced
block for additional weight reduction.
Unless otherwise stated, all JOS-E/JBS-E
BlockBody relief valves are supplied with a
bolted cap to suit high pressure applications.
BlockBody valves are manufactured to ASME
Boiler and Pressure Code, Section VIII and
Section XIII and relieving capacities are certified
by the National Board of Boiler and Pressure
Vessel Inspectors.
Body, bonnet and cap
• ASME SA105 carbon steel
• ASME SA182 grade F5a alloy steel
• ASME SA182 grade F9 alloy steel
• ASME SA479 type 316 stainless steel
• ASME SB348 grade 7 titanium
• ASME SA182 grade F51 Duplex
stainless steel
• ASME SA479 UNS-S32550 super Duplex
stainless steel
• ASME SA350 grade LF2 carbon steel
• ASTM B348 grade 4 titanium
Trim
• ASME SA479 type 316 stainless steel
• ASME SB425 UNS N08825 Incoloy 825
• ASME SB446 UNS N06625 Inconel 625
• ASME SA479 UNS S31803 Duplex
stainless steel
• ASTM B348 grade 4 titanium
Spring
• High temperature alloy steel
• Titanium
• Inconel® X-750
• Chrome steel
• Type 316 stainless steel
• Hastelloy® B
• Hastelloy® C
• Monel®
• Alloy 20
ACCESSORIES AND OPTIONAL
CONSTRUCTION
Accessories
• Lifting bracket
• Limit switch
• Actuator
Optional construction
• O-ring soft seat
• Special coating systems
• Steam purge
• Supplementary back pressure
balancing piston
Connections
• Ring type joint inlet/outlet
• API 6BX 10,000# inlet
• Grayloc®
• Techlok®
NOTE
Inconel and Monel are registered trademarks of
Special Metals Corporation. Hastelloy is a registered
trademark of Haynes International, Inc. Grayloc is a
registered trademark of Grayloc Products. Techlok is
a registered trademark of Vector International.
117
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
ORDERING INFORMATION
The primary purpose of Series JOS-E/JBS-E/JLT pressure relief valves is to protect lives and
property. To enable us to help you in selecting the right valve for your application, please provide
the information listed below. Details of the process fluid and conditions are especially important.
If there is any doubt as to selection or application of valves or parts, please contact your local
sales representative.
For valve sizes 10" x 14" through 20" x 24", please refer to model JB datasheet VCTDS-00290.
Ordering information
Type (ANSI or EN flange type)
Quantity
Nominal valve size (inlet x orifice x outlet)
Valve series
Inlet connection rating and facing
Outlet connection rating and facing
Service (liquid, gas or vapor)
Set pressure (psig)
Back pressure (psig) if any and whether constant or variable
Maximum service temperature (°F) ambient
Cap or lifting lever type
Valve materials
Seat material
Code requirements
Required capacity
Accumulation (allowable overpressure)
Molecular weight - vapor
Specific gravity - gases and liquids
Viscosity - liquids
Example
ANSI
5
4xLx6
JOS-E-45
600 RF
150 RF
Air
800 psig
Atmosphere
60°F
Type C
Standard
Metal-to-metal standard
ASME Unfired Pressure
Vessel Code, Section VIII and
Section XIII
45433 SCFM
10%
1.0
-
How to order examples
1. To specify a G orifice (0.503 in2.) (325 mm2) Style JOS conventional valve with standard materials
for liquid service at 700 psig (48.2 barg) and at +700°F (+371°C) with a packed lifting lever, the
following designation applies: 11/2 G 3 JLTJOS-E-46-D.
2. To specify an M orifice (3.60 in2.) (2323 mm2) Style JBS bellows valve with back pressure
balancing piston, Monel® nozzle and disc insert, and FFKM O-ring soft seats for gas service
at 200 psig (13.7 barg) and +400°F (+204°C) with threaded cap and test rod, the following
designation applies: 4M6 JBSBP-E-OR-25-M1-K with FFKM.
3. To specify a K orifice (1.838 in2.) (1186 mm2) Style JOS conventional valve with open bonnet
and standard materials for ASME Code Section VIII and Section XIII steam service at 600 psig
(41.3 barg) and +600°F (+316°C) with a regular lifting lever, the following designation applies:
3K4 JOS-H-E-45-C.
4. To specify an EN flange Type E orifice [0.196 in2] [126 mm2] Style JBS bellows valve with
standard threaded cap, set at 100 psig [6.8barg], with a PN16 inlet flange and PN10 outlet
flange for a NACE application, the following designation applies:
DN25DDN50 JBS-E-1B5-J-N2.
Monel® is a mark owned by Special Metals Corporation.
118
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SELECTION GUIDE FOR ANSI FLANGE TYPE
Example:
Inlet x orifice x outlet
1D2
To 12W16
Valve series
JOS-E
Conventional
JBS-E
Bellows
JDS-E
Balanced Diaphragm
JLTJOS-E
Conventional with liquid trim
JLTJBS-E
Bellows with liquid trim
JLTJDS-E
Balanced diaphragm with liquid trim
JBSBP-E
Bellows with balancing piston
JLTJBSBP-E
Bellows with liquid trim and balancing piston
JOS-H-E
Conventional with open bonnet for ASME
Code Section VIII and Section XIII steam service
High pressure Q and R orifice indication
None
Standard
#
600# high pressure Q or R orifice
Seat type
None
Metal
OR
O-Ring[1]
Inlet flange rating[4]
1
150#
2
300# (Reduced Rating)
3
300#
4
600#[2]
5
900#
6
1500#
7
2500#
X
Other
Temperature range[4]
2
-450 to -76°F (-268 to -60°C)
4
-75 to -21°F (-59 to -30°C)
5
-20 to 650°F (-29 to 343°C)
6
651 to 800°F (344 to 427°C)
7
801 to 1000°F (428 to 538°C)
X
Other
Flange facing
None
(Standard) RF x RF
R
RTJ x RF
T
RTJ x RTJ
X
Other
6Q8
JLTJBS-E
#
OR
4
5
R
Model # Examples
1D2JOS-E15J
1D2JOS-E15LTJ
1.5F2JBS-E25SJ
4P6JLT-JBS-EE45RSD-PN2
3J4JBS-E75XXL-PBSPL
6Q8JBS-EX5XXC-SPL
NOTES
1. When ordering soft seats, specify material according to page 22.
2. Except 'T' and 'T2' orifices. These have 300# inlet flange.
3. Series JOS-H-E may be used up to 800°F (427°C).
4. See pages 25 to 58 for appropriate maximum set pressures, temperatures and outlet flange.
5. Refer to page 20 for ASME Code Section VIII and Section XIII requirements regarding lifting lever.
6. For special material availability, please contact your local sales representative.
7. More than one model number supplement can be used at once.
8. Only applies to non-NACE applications.
9. See pages 18 and 19 for ANSI/NACE MR0175/ISO 15156-1:2015 compliance.
10. Series JDS-E Temperature range -13 to 500°F (-11 to 260°C).
119
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SELECTION GUIDE FOR ANSI FLANGE TYPE (continued)
Example
Material variations
None
Standard materials
L6
D
-
PN2
/V7X
C6
CS body and bonnet/316 SS trim/Inconel® X750 spring[8]
S4
CS body and bonnet/316 SS trim/Ctd. chrome steel spring
S6
SST body and bonnet/316 SS trim/Inconel® X750 spring
S
SST body and bonnet/316 SS trim/316 spring
LT
Low temp CS body and bonnet/SST trim/Ctd. chrome steel spring
L6
Low temp CS body and bonnet/SST trim/Inconel® X750 spring
M1
CS body and bonnet/SST and Monel® trim/Ctd. chrome steel spring
M4
CS body and bonnet/Monel® trim/Ctd. chrome steel spring
M5
Monel® body and bonnet/Monel® trim/Ctd. chrome steel spring
M6
Monel® body and bonnet/Monel® trim/Inconel® X750 spring
M7
SST body and bonnet/SST and Monel® trim/316 spring
M8
SST body and bonnet/SST and Monel® trim/Inconel® X750 spring
M
Monel® body and bonnet/Monel® trim/Monel® spring
H1
CS body and bonnet/SST and Hastelloy® Trim/Ctd. chrome steel spring
H4
CS body and bonnet/Hastelloy® trim/Ctd. Chrome steel spring
H5
Hastelloy® body and bonnet/Hastelloy® trim/Ctd. chrome steel spring
H6
Hastelloy® body and bonnet/Hastelloy® trim/Inconel® X750 spring
H
Hastelloy® body and bonnet/Hastelloy® trim/Hastelloy® spring
XX
Other
Cap and lifting lever type[5]
A
Threaded cap (restricted height)
J
Threaded cap
K
Threaded cap with test rod
C
Regular lifting lever
D
Packed lifting lever
E
Packed lifting lever with test rod
L
Bolted cap
M
Bolted cap with test rod
B
Threaded cap with test rod (restricted height)
G
Bolted cap (restricted height)
H
Bolted cap with test rod (restricted height)
T
Regular lifting lever with test rod and Type K with test rod
X
Other
Model number supplement indicator
None
No model number supplement(s) if model number supplement is present
Model number supplements[7]
P
PED Certification
N1
Non-standard ANSI/NACE MR0175/ISO 15156-1:2015 option for bellows models [6][9]
N2
ANSI/NACE MR0175/ISO 15156-1:2015 [6][9]
S
Steam trim set pressure above 450 psig
B
Forged block body configuration
FE
Fugitive Emissions compliance
SPL
Non-standard option or configuration
Monitoring Technology
Monitoring Technology: Bellows Leak Detection
/V7X
Rosemount™ 708 Wireless Acoustic Transmitter
/P2A
Rosemount™ Wired 2051 Pressure Transmitter
/Z2A
Fisher™ 4200 Wired Transmitter
/P3A
Rosemount™ Wired 3051 Pressure Transmitter
/LSA
Wired Limit Switch
/P2X
Rosemount™ Wireless 2051 Pressure Transmitter
/LSX
Wireless Limit Switch
/P3X
Rosemount™ Wireless 3051 Pressure Transmitter
/LOA
Other Wired Position Transmitter
/PWX
Rosemount™ WPG Wireless Pressure Gauge
/LOX
Other Wireless Position Transmitter
/POA
Other Wired Pressure Transmitter
/POX
Other Wireless Pressure Transmitter
NOTES
1. When ordering soft seats, specify material according to page 22.
2. Except 'T' and 'T2' orifices. These have 300# inlet flange.
3. Series JOS-H-E may be used up to 800°F (427°C).
4. See pages 25 to 58 for appropriate maximum set pressures, temperatures and outlet flange.
5. Refer to page 20 for ASME Code Section VIII and Section XIII requirements regarding lifting lever.
6. For special material availability, please contact your local sales representative.
7. More than one model number supplement can be used at once.
8. Only applies to non-NACE applications.
9. See pages 18 and 19 for ANSI/NACE MR0175/ISO 15156-1:2015 compliance.
10. Series JDS-E Temperature range -13 to 500°F (-11 to 260°C).
120
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SELECTION GUIDE FOR EN FLANGE TYPE
Example
Inlet x orifice x outlet
25D50
TO 200T250
Valve Series
JOS-E
Conventional
JBS-E
Bellows
JDS-E
Balanced Diaphragm
JLTJOS-E
Conventional with liquid trim
JLTJBS-E
Bellows with liquid trim
JLTJDS-E
Balanced diaphragm with liquid trim
JBSBP-E
Bellows with balancing piston
JLTJBSBP-E
Bellows with liquid trim and balancing piston
JOS-H-E[2]
Conventional with open bonnet for ASME
Code Section VIII and Section XIII steam service
High pressure Q and R orifice indication
None
Standard
#
600# high pressure Q or R orifice
Seat type
None
Metal
OR
O-ring[1]
50J80
JLTJBS-E
OR
1A
5
Inlet flange rating[3]
1A
PN10 X PN10
1B
PN16 X PN10
1C
PN16 X PN16
2D
PN25 X PN10
2E
PN25 X PN16
2F
PN40 X PN10
2G
PN40 X PN16
3D
PN25 X PN10
3E
PN25 X PN16
3F
PN40 X PN10
3G
PN40 X PN16
XX
Other
Temperature range[3]
2
-450 to -76°F (-268 to -60°C)
4
-75 to -21°F (-59 to -30°C)
5
-20 to 650°F (-29 to 343°C)
6
651 to 800°F (344 to 427°C)
7
801 to 1000°F (428 to 538°C)
x
Other
Flange facing
None
(Standard) Type B1 Raised Face
Model # Examples
25D50JOS-E1A5J
25D50JOS-E1A5LTJ
100P150JLTJBS-E3F4RSD-PN2
80J100JBS-E2E5XXL-PBSPL
150Q200JBS-EXX5C-SPL
NOTES
1. When ordering soft seats, specify material according to page 22.
2. Seires JOS-H-E may be used up to 800°F (427°C).
3. See pages 59 to 72 for appropriate maximum set pressures, temperatures and outlet flange.
4. Refer to page 20 for ASME Code Section VIII and Section XIII requirements regarding lifting lever.
5. For special material availability, please contact your local sales representative.
6. More than one model number supplement can be used at once.
7. Only applies to non-NACE applications.
8. See pages 18 and 19 for ANSI/NACE MR0175/ISO 15156-1:2015 compliance.
9. Series JDS-E Temperature range -13 to 500°F (-11 to 260°C).
121
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
SELECTION GUIDE FOR EN FLANGE TYPE (continued)
Example
L6
D
Material variations
None
Standard materials
C6
CS body and bonnet/316 SS trim/Inconel® X750 spring[7]
S4
CS body and bonnet/316 SS trim/Ctd. chrome steel spring
S6
SST body and bonnet/316 SS trim/Inconel® X750 spring
S
SST body and bonnet/316 SS trim/316 spring
LT
Low temp CS body and bonnet/SST trim/Ctd. chrome steel spring
L6
Low temp CS body and bonnet/SST trim/Inconel® X750 spring
M1
CS body and bonnet/SST and Monel® trim/Ctd. chrome steel spring
M4
CS body and bonnet/Monel® trim/Ctd. chrome steel spring
H1
CS body and bonnet/SST and Hastelloy® Trim/Ctd. chrome steel spring
H4
CS body and bonnet/Hastelloy® trim/Ctd. Chrome steel spring
XX
Other
Cap and lifting lever type[4]
A
Threaded cap (restricted height)
J
Threaded cap
K
Threaded cap with test rod
C
Regular lifting lever
D
Packed lifting lever
E
Packed lifting lever with test rod
L
Bolted cap
M
Bolted cap with test rod
B
Threaded cap with test rod (restricted height)
G
Bolted cap (restricted height)
H
Bolted cap with test rod (restricted height)
T
Regular lifting lever with test rod and Type K with test rod
X
Other
Model number supplement indicator
None
No model number supplement(s) if model number supplement is present
Model number supplements[6]
P
PED Certification
N1
Non-standard ANSI/NACE MR0175/ISO 15156-1:2015 option for bellows models [5][9]
N2
ANSI/NACE MR0175/ISO 15156-1:2015 [5][9]
S
Steam trim set pressure above 450 psig
B
Forged block body configuration
FE
Fugitive Emissions compliance
SPL
Non-standard option or configuration
Monitoring Technology
Monitoring Technology: Bellows Leak Detection
/V7X
Rosemount™ 708 Wireless Acoustic Transmitter
/P2A
Rosemount™ Wired 2051 Pressure Transmitter
/Z2A
Fisher™ 4200 Wired Transmitter
/P3A
Rosemount™ Wired 3051 Pressure Transmitter
/LSA
Wired Limit Switch
/P2X
Rosemount™ Wireless 2051 Pressure Transmitter
/LSX
Wireless Limit Switch
/P3X
Rosemount™ Wireless 3051 Pressure Transmitter
/LOA
Other Wired Position Transmitter
/PWX
Rosemount™ WPG Wireless Pressure Gauge
/LOX
Other Wireless Position Transmitter
/POA
Other Wired Pressure Transmitter
/POX
Other Wireless Pressure Transmitter
PN2
/V7X
NOTES
1. When ordering soft seats, specify material according to page 2.
2. JOS-H-E may be used up to 800°F (427°C).
3. See pages 59 to 72 for appropriate maximum set pressures, temperatures and outlet flange.
4. Refer to page 20 for ASME Code Section VIII and Section XIII requirements regarding lifting lever.
5. For special material availability, please contact your local sales representative.
6. More than one model number supplement can be used at once.
7. Only applies to non-NACE applications.
8. See pages 18 and 19 for ANSI/NACE MR0175/ISO 15156-1:2015 compliance.
9. Series JDS-E Temperature range -13 to 500°F (-11 to 260°C).
122
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
ORDERING INFORMATION - PARTS
To order parts, the following information should
be included:
1. Quantity
2. Part name, i.e., disc insert
3. Size, series and valve number
4. Shop number (from valve nameplate)[1]
5. Serial number (from valve nameplate)
6. Original purchase order number (if shop
number has been destroyed).
A
S
UV
SER.
NO.
CAP.
ANDERSON GREENWOOD CROSBY, EMRT
SET PRESS.
Replacement valves
To replace a valve in service, the shop number,
serial number, set pressure and previous order
number should be specified.
JOS-E15J
STYLE
CDTP
100 PSIG
BP
10 PSIG
91 PSIG
1
TC
OVER
PRESS.
245 SCFM @ 60°F
10%
JOS-E
A
S
M
E
UV
SER.
NO.
ANDERSON GREENWOOD CROSBY, EMRT
SIZE
STYLE
1E2
SET PRESS.
JBS-E-RL-45SJ
CDTP
660 PSIG
660.6 PSIG
BP
12345678
0 PSIG
RESTRICTED CAP.
TC
OVER
PRESS.
1820 SCFM AIR @ 60F
RESTRICTED LIFT
Springs with washers
To order springs with washers, in addition
to the other information included for ‘parts’,
the required valve set pressure must also be
specified. If the spring is for a non-bellows valve
and there is a constant back pressure condition,
that should also be specified as should the
spring material, if other than standard.
1D2
SIZE
12345678
Emerson provides a special ‘fast response’
delivery service of spare parts to satisfy unplanned requirements which can be initiated by
contacting your local representative.
Emergency delivery service is available direct
from the factory, 24 hours a day, 7 days a week.
M
E
1
10%
0.116"
JBS-E-RL
A
S
M
E
UV
SER.
NO.
CAP.
ANDERSON GREENWOOD CROSBY, EMRT
SIZE
1D2
SET PRESS.
STYLE
JBSBP-E15A/P2X
CDTP
100 PSIG
BP
12345678
10 PSIG
TC
OVER
PRESS.
245 SCFM @ 60°F
91 PSIG
1
10%
JBSBP-E (Bellows Leak Detection)
A
S
M
E
UV
ANDERSON GREENWOOD CROSBY, EMRT
SIZE
STYLE
CDTP
SET PRESS.
BP
SER.
NO.
CAP.
TC
OVER
PRESS.
SAMPLE NAMEPLATE
0038
UKCA Tag
(Figures shown are for illustrative purposes only.)
1. For valves manufactured in 2012 or earlier.
123
CROSBY J-SERIES
DIRECT SPRING PRESSURE RELIEF VALVES
PRESSURE RELIEF DEVICE SIZING AND SELECTION SOFTWARE
Emerson PRV2SIZE incorporates over 140 years of experience and engineering expertise for an
extensive array of Anderson Greenwood, Crosby and Varec pressure relief devices and related
products in one software package. It enables you to address numerous applications in a single
sizing and selection platform without the need to use two or more sizing programs.
Emerson PRV2SIZE features:
• User-friendly interface
- Sizing calculations can be saved at any point
- Multiple tags can be opened at one time
• Ability to sort data using a variety of parameters
• Fully configured product selection
• Industry standard sizing methodologies
• Drop-down boxes allow instantaneous change of sizing methodology from API to ASME and
vice - versa
• 2:1 elliptical head tanks for fire sizing applications
• Catalog integration from existing product literature PDF’s
• Detailed product specifications including cross sectional drawings with dimensions
and weights
- U.S. customary system and metric units
• Advanced tools to export and import device tag numbers with the ability to mail files directly
from the software program
• Flow curves for pressure relief valves
• Individual capsule summaries of each product including an image of the selected product
Emerson PRV2SIZE website: valvesizing.emerson.com
VCTDS-00597-EN © 2015, 2023 Emerson Electric Co. All rights reserved 10/23. Crosby is a mark owned by one of the companies in the Emerson Automation Solutions business
unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as
warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions,
which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
Emerson Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson
Electric Co. product remains solely with the purchaser.
Emerson.com