HIGH-PRESSURE
RELIEF VALVES
VALVES & ACTUATORS
H-900HP SERIES
FEATURES
GENERAL
St.St. 316 Construction
n MAWT up to 6000 psi
n Set Pressure from 50 psig to 6000 psig ( 3.50 to 414 bar)
n Identifying colored springs for each pressure range
n Replaceable springs for variable pressure ranges
n Available in all pipe threads and LET-LOK® connections
n Option to comply with standards CE/PED
n Sizes range: 1/4",1/2", 6mm and 12mm
The H-900 HP Series is a relief valve designed for high pressure
services. It is most suited for use where changes in pressure can cause
process issues, system damage or personal injury.
n
MATERIALS OF CONSTRUCTION
Item
No.
Qty.
1/4" Body Size
1/2" Body Size
Cap Plug
Label
1
Polypropylene
Polypropylene
1
Polyester
Polyester
1
St.St 316
St.St 316
4
Adjustment Cap
Spring
1
St.St. 302,17-7PH
St.St. 302,17-7PH
5
Lower Spring Button
1
St.St 316
-
5A
Lower Spring Button
Locking Nut
1
-
St.St 316
1
St.St 316
St.St 316
Bonnet
O-Ring
1
St.St 316
St.St 316
Quad Ring
Retaining Ring
1
1
1
Fluorocarbon FKM
Fluorocarbon FKM
PH15-7 Mo
Fluorocarbon FKM
Fluorocarbon FKM
St.St 316
1
2
3
6
7
8
9
10
Components
3
Location Ring
1
-
Stem
1
St.St 316
-
11A
Stem
1
-
12
Clamps Screw
1
St.St 316
St.St. 316 bonded with
Fluorocarbon FKM
-
13
1
Fluorocarbon FKM
-
14
O-Ring
Insert
1
St.St 316
-
15
Body
1
St.St 316
St.St 316
Seal Meterial
Fluorocarbon
FKM
Buna N
-
Polychloroprene
(CR)
8
EPDM
-
-
-18 (0)
6000
-4 (25)
6000
(413)
6000
10A
11
11A
6000
(413)
14
15
(413)
(413)
10 (50)
65 (150)
5600 (386)
5600 (386)
5600 (386)
5600 (386)
93 (200)
5200 (358)
5200 (358)
5200 (358)
5200 (358)
121 (250)
4900 (338)
4900 (338)
4900 (338)
4900 (338)
-
-
4700 (324)
-
288
10
13
-
-12 (10)
148 (300)
7
12
-34 (-30)
135 (275)
6
MAX SET PRESSURE psig (bar)
-40 (-40)
-1 (30)
5A
H-900HP Body Size: 1/4" & 1/2"
TEMP
°C (°F)
-23 (-10)
5
9
PRESSURE TEMPERATURE RATING
Series
2
4
11
10A
VALVES & ACTUATORS
1
HIGH-PRESSURE RELIEF VALVES H-900HP SERIES
CLEANING & PACKAGING
TESTING
Every H-900HP series relief valve is cleaned in accordance with
Standard Cleaning and Packaging Procedure 8184.
Oxygen Clean & Lubricant Free Cleaning and packaging is
conducted in accordance with Special Cleaning and Packaging
Procedure 8185.
The H-900HP Relief Valve designs have been tested for
Proof and Burst.
Every H-900HP Relief Valve is factory tested for proper assembly,
set and resealing performance.
No detectable leakage is allowed during the shell test.
NOMINAL CRACKING PRESSURE RANGE FOR 1/4"
psig
Bar
NOMINAL CRACKING PRESSURE RANGE FOR 1/2"
Spring
Designator
Color
psig
Bar
Spring
Designator
Color
White
50-350
3.4 - 24
A
White
50-350
3.4 - 24
A
350-750
24 - 51.5
B
Blue
350-750
24 - 51.5
B
Blue
750-1500
51.5 - 103
C
Gold
750-1500
51.5 - 103
C
Gold
1500-2250
103 - 155
D
Turquoise
2250-3000
155 - 206
E
Green
3000-4000
206 - 275
F
Red
4000-5000
275 - 344
G
Silver
5000-6000
344 - 413
H
Black
A
B
C
D
E
F
G
H
STANDARD CONFIGURATION DIMENSIONS
Dimensions
Orifice*
A
B
C
D
Inlet
Outlet
H-900HP
1/4 LET-LOK
1/4 LET-LOK
37
1.45
39
1.53
50
1.97 96.0 3.78
H-900HP
6MM LET-LOK
6MM LET-LOK
37
1.45
39
1.53
50
1.97 96.0 3.78
32
1.26
30
1.18
40
1.57 88.6 3.49
32
1.26
39
1.53
50
1.97 88.6 3.49
H-985HP
1/4 Female NPT
H-995HP
1/4 Male NPT
1/4 LET-LOK
H-900HP
½ LET-LOK
½ LET-LOK
H-900HP
12MM LET-LOK 12MM LET-LOK
H-985HP
½ Male NPT
½ Female NPT
H-995HP
½ Male NPT
½ LET-LOK
mm inch mm inch mm inch mm inch mm inch
3.6 0.14
Lock Wire
Holes
D
46.5 1.83 46.5 1.8 59.2 2.33 150 5.92
6.4 0.25
46.5 1.83 46.5 1.83 59.2 2.33 150 5.92
36.3 1.43 36.3 1.43
49
A
1.93 140 5.52
36.3 1.43 46.5 1.83 59.2 2.33 140 5.52
* Orifice in fully open position
SETTING AND RESEALING PRESSURE
Upstream set pressure is the first indicator of flow process.
Every pressure relief after the first is repeatable within
a deviation of 5% at room temperature.
C
H-900HP RESEAL PRESSURE
n
Blocked upstream set pressure is the first indicator of a stopped
flow process and is always lower than the set pressure.
n Lubricant free cleaned valves have higher reseal pressure.
Series
Test Set Pressure
psig (bar)
H-900HP
100 - 200 (6.8 to 13.7)
850 - 1000 (58.5 to 68.9)
n
HAM-LET ADVANCED CONTROL TECHNOLOGY
B
Min Resealing Pressure
as a
Percentage of set
pressure, %
50
84
289
VALVES & ACTUATORS
Connection / size
Description
FLOW DATA AT 70°F (20ºC) FOR 1/4" BODY SIZE
A
B
SPRING 50-350psig
SPRING 350-750psig
AIR FLOW
WATER FLOW
Water Flow (LPM)
1000
500
2500
si
50 psi
5
600
10
20
30
40
800
14
50 psi
0
55
27
150 psi
200
1000
41
si
400 p
300 psi
400
70
50
60
70
80
90
2
1
41
400 psi
400
27
300 psi
150 psi
200
14
50 psi
0
0.2
0.4
1
0.6 0.8
1.2 1.4 1.6
1.8
2
SPRING 1500-2250psig
AIR FLOW
WATER FLOW
Air Flow (SLPM)
2000
2000
1500
Water Flow (LPM)
2000
2500
psi
110
83
1000 psi
i
800 ps
0
10
20
30
0.2
0.4
0.6
0.8
1.0
165
2400
165
138
1400 psi
1200
0
psi
1600
1600
1000
500
Pressure Drop (Psi)
0
Inlet Pressure (bar)
Inlet Pressure (Psig)
VALVES & ACTUATORS
55
D
SPRING 750-1500psig
0 psi
200
2000
138
si
1600 p
1600
1400 psi
1200
1000 p
110
si
83
i
800 ps
40 50
60
70
80
55
90 100
800
0
Air Flow (SCFM)
290
70
Water Flow (US.GPM)
C
800
7
6
5
550 psi
Air Flow (SCFM)
2400
4
3
700 psi
600
0
100
0
HIGH-PRESSURE RELIEF VALVES H-900HP SERIES
0.04 0.08
0.12 0.16
0.2
0.24
Water Flow (US.GPM)
55
0.28 0.32
Pressure Drop (bar)
Inlet Pressure (Psig)
2000
700 p
800
0
1500
Pressure Drop (Psi)
0
Inlet Pressure (bar)
1000
Pressure Drop (bar)
Air Flow (SLPM)
FLOW DATA AT 70°F (20ºC) FOR 1/4" BODY SIZE
E
F
SPRING 2250-3000psig
SPRING 3000-4000psig
AIR FLOW
WATER FLOW
Water Flow (LPM)
3800
4000
2000
2500
psi
i
ps
3200
3500
250
10
4500
275
4000
206
0 psi
30
40
50
60
70
80
240
i
i
250
0
206
0.2
0.04 0.08 0.12 0.16
172
0.24 0.28 0.32
Water Flow (US.GPM)
SPRING 4000-5000psig
SPRING 5000-6000psig
AIR FLOW
WATER FLOW
Air Flow (SLPM)
300
200
Water Flow (LPM)
400
500
413
i
00 ps
55
5600
5200
4800
359
psi
330
4200
2
4
6
8
psi
10
303
12
14
16
18
20
0.2
0.4
0.6
0.8
1.0
6200
386
4800
4400
0
276
Air Flow (SCFM)
HAM-LET ADVANCED CONTROL TECHNOLOGY
Pressure Drop (Psi)
100
Inter Pressure (bar)
0
0
psi
0 ps
3000
H
4000
310
ps
800
G
6000
1.0
275
2
90 100
0.8
psi
3200
Air Flow (SCFM)
Inlet Pressure (Psig)
0.6
3800
3500
2500
172
20
0.4
i
0 ps
550
5800
5400
400
372
si
0p
480
427
5000
345
i
0 ps
420
4600
317
4200
0
0.04
0.08 0.12
0.16
0.2
0.24
Pressure Drop (bar)
0
310
240
psi
2800
3000
2500
1500
0.2
VALVES & ACTUATORS
1000
500
Pressure Drop (Psi)
0
Inter Pressure (bar)
Inlet Pressure (Psig)
4500
0
Pressure Drop (bar)
Air Flow (SLPM)
290
0.28 0.32
Water Flow (US.GPM)
291
FLOW DATA AT 70°F (20ºC) FOR 1/2" BODY SIZE
A
B
SPRING 50-350psig
SPRING 350-750psig
AIR FLOW
WATER FLOW
Water Flow (LPM)
Air Flow (SLPM)
1000
1500
2000
2500
Inlet Pressure (Psig)
800
550 psi
600
0
0
10
20
30
40
55
800
27
150 psi
200
1000
41
300 psi
400
70
14
50
60
70
80
90
7
6
5
70
55
550 psi
400
300 psi
41
27
150 psi
200
0
0.2
0.4
0.6 0.8
14
1
1.8
1.2 1.4 1.6
2
Water Flow (US.GPM)
Air Flow (SCFM)
C
SPRING 750-1500psig
AIR FLOW
WATER FLOW
1000
1500
Water Flow (LPM)
2000
2500
0
165
2000
138
1600
110
1200
800
83
1000 psi
0
10
20
30
40 50
60
70
80
55
90 100
Pressure Drop (Psi)
500
Inlet Pressure (bar)
2400
0
0.4
0.6
0.8
1.0
2400
165
2000
138
1600
110
1000 psi
1200
800
0
Air Flow (SCFM)
292
0.2
HIGH-PRESSURE RELIEF VALVES H-900HP SERIES
0.04 0.08
0.12 0.16
83
0.2
0.24
Water Flow (US.GPM)
55
0.28 0.32
Pressure Drop (bar)
Air Flow (SLPM)
Inlet Pressure (Psig)
VALVES & ACTUATORS
4
3
600
0
100
2
1
0
Pressure Drop (bar)
500
Pressure Drop (Psi)
0
Inlet Pressure (bar)
1000
APPLICATIONS
OPERATION
The H-900HP is a relief valve and therfore is not certified to
ASME due to not having capacity rating at a given pressure
rise (accumulation).
H-900HP relief valves open when system pressure gets to the set
pressure and close when system pressure drops below the set
pressure.
Warning
n Valves that have not been actuated for some time may contain pressure higher than the set pressure.
n The system designer and user have the sole responsibility for selecting products that will conform to the specific safety codes appropriate for the system.
H-900HP ORDERING INFORMATION
OPTIONAL
00 - HP -
Valve Series
-
SS
-
L
1/4
-
A
-
-
Body Material
End Connection Size
Seal Material
SS - 316 St.St.
1/4"
6MM
1/2"
12MM
BLANK
BU
EP
NE
Valve Type
End Connection
00 - LET-LOK® Ends
85 - Male to Female End
95 - Male to LET-LOK® End
L
N
R
NL
Spring Designator
- LET-LOK®
- NPT
- ISO Tapered
- NPT to LET-LOK®
For other end connections,
please contact HAM-LET
representative.
A, B, C, D, E, F, G, H
-
- Fluorocarbon FKM
- Buna N
- EPDM
- Polychloroprene (CR)
CE/PED Certification
See table:
"NOMINAL CRACKING
PRESSURE RANGE"
BLANK - Standard testing
- Certification PED
CE
97/23/EC
Factory Calibration
Designator
VALVES & ACTUATORS
H-9
Treatment
50-6000 Psi
Example: H-900-HP-SS-L-1/4-A120
Will be Calibrated to 120 Psi
BLANK - Standard Cleaning &
Passivation
OC
LF
ORDERING INFORMATION FOR SPARE KITS
SPRING KIT
SEAL KIT
Includes:
Spring (specific to desired set pressure range) and label.
Includes: O-Rings and label
Z - 900 - HP -
Z - 900 - HP -
SPK
-
1/4
-
A
SK
-
- Oxygen Clean
- Lubricant Free
1/4
Body Designator
per End Connection
Spring Designator
Body Designator
per End Connection
1/4 for all end connections
A, B, C, D, E, F, G, H
1/4 for all end connections
1/2 for all end connections
See table above
n For oxygen applications work shall be carried out according to procedures for
working with oxygen. In case spare kits are ordered for oxygen clean valves, such
kits have to be ordered as oxygen clean by adding "-OC" designator.
Example: Z-900-HP-SK-1/4-VI-OC
1/2 for all end connections
-
VI
Seal Material
VI
BU
EP
NE
- Fluorocarbon FKM
- Buna N
- EPDM
- Polychloroprene (CR)
Warning!
The system designer and user have the sole responsibility for selecting products suitable for their special
application requirements, ensuring their safe and trouble-free installation, operation, and maintenance. Application details, material compatibility and product ratings should all be considered for each selected product.
Improper selection, installation or use of products can cause property damage or personal injury.
H-900HP, Rev.13 ,August 2015
HAM-LET ADVANCED CONTROL TECHNOLOGY
293
VALVES & ACTUATORS
294
HIGH-PRESSURE RELIEF VALVES H-900HP SERIES