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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
TABLE OF CONTENTS
GENERAL INFORMATION
5. LEVEL CONTROL VALVES
INTRODUCTION
G1
300 SERIES FEATURES
G2
300 SERIES CUT-OUT
G2-b
ENGINEERING DATA
BASIC VALVE OPERATING MODES
G3-a
COMPONENTS
G4-a
DIMENSIONS & WEIGHTS
SI
US
G5-a
HEAD LOSS CHARTS
G5-b
CAVITATION DATA
G5-d
CONTROL VALVE PILOTS
G6
CONTROL VALVE ACCESSORIES
G7
CERTIFICATES
G8
1. REMOTE CONTROL & CHECK VALVES
EL
SOLENOID CONTROLLED VALVE
1A-1
CV
HYDRAULIC CHECK VALVE
1B-1
FL
5B-1
AL
ALTITUDE CONTROL VALVE
5C-1
FL/EL
ELECTRIC FLOAT
CONTROLLED VALVE
5D-1
DIFFERENTIAL FLOAT
CONTROLLED PRESSURE
SUSTAINING VALVE
5E-1
FLDI/PS
6. PUMP SYSTEM CONTROL VALVES
BC
PUMP CONTROL VALVE
6A-1
DW
DEEP WELL CONTROL VALVE
6B-1
BC/PS BC/TO PUMP CONTROL/PRESSURE
SUSTAINING VALVE
BC/CD
6D-1
PUMP CONTROL/FLOW RATE
LIMITING VALVE
6E-1
RE
SURGE ANTICIPATING VALVE
6F-1
RE/EL
SURGE ANTICIPATING VALVE
PR
PRESSURE REDUCING VALVE
2A-1
PR(3W)
PRESSURE REDUCING VALVE
(3-WAY CONTROL)
2B-1
PROPORTIONAL PRESSURE
REDUCING VALVE
2C-1
NS
PRESSURE REDUCING &
SUSTAINING VALVE
2D-1
7. SPECIAL CONTROL APPLICATIONS
PR/PS
PR/EL
ELECTRICALLY CONTROLLED
PRESSURE REDUCING VALVE
DI
2E-1
EC
3. PRESSURE SUSTAINING & RELIEF VALVE
PS
PRESSURE SUSTAINING VALVE
3A-1
PS(R)
PRESSURE RELIEF VALVE
3B-1
QR
QUICK RELIEF SAFETY VALVE
3C-1
4. FLOW RATE CONTROL VALVES
FR
FLOW RATE CONTROL VALVE
4A-1
FE
EXCESSIVE FLOW SHUT-OFF VALVE
4B-1
6C-1
PUMP CONTROL/EXTENDED
CLOSURE VALVE
BC/FR
PR(D)
5A-1
FLDI1/FLDI2 DIFFERENTIAL FLOAT
CONTROLLED VALVE
2. PRESSURE REDUCING VALVES
Composite
FLOAT CONTROLLED VALVE
(ELECTRIC ACTIVATION)
6G-1
NON-SLAM CHECK VALVE
6H-1
PRESSURE DIFFERENTIAL
SUSTAINING VALVE
7A-1
ELECTRONICALLY CONTROLLED
VALVE
7B-1
SP
SURGE-PREVENTING CLOSURE
7C-1
NO
NORMALLY OPEN VALVE
7D-1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
GENERAL INFORMATION
INTRODUCTION
DOROT Automatic Control Valves is proud to present the 300 Series Design Manual. This
latest line of products is the culmination of more than 50 years of experience in development
and production.
This manual is intended for use by DOROT distributors, engineering firms, consultants,
and users of hydraulic control systems. It includes all the data required to understand and
design basic applications.
The manual is divided into 8 chapters. The first chapter deals with general information. This
includes a basic introduction as well as engineering data. The following chapters are divided
into control function families, each family performing similar control functions. Within each
chapter there are a number of sections, representing the applications available in the particular
family. Each section contains basic design data making it suitable for use as an independent
source of technical information.
Though this design manual offers comprehensive information on the most common valve
control variations, control application combinations are numerous. For a non-standard solution,
or for further technical information, contact DOROT'S Technical Department or your local
distributor.
Each application section includes the following information:
General Description
A description of the application.
Typical Applications
A diagram of a typical application.
Schematic Control Diagram
A standard layout of the valve and its various
control device. The scheme is not an assembly
instruction, and may be modified in different
valve sizes and operating conditions. (not
binding)
Optional Features
A list of additional options that may be added
to the main control application.
Purchase Specifications
A detailed definition of the valve.
Operating Data Checklist
Specific hydraulic parameters that determine
the precise valve configuration.
How To Order
An example of the correct ordering sequence.
Design Notes
Specific information concerning the application.
For additional information please refer as follow:
Dimensions and Weights
The dimensions and weights of the various
valve sizes.
Components page
A list of materials used in the production of
the various valve components.
For information see p.G5-a.
Size Selection Table
Detailed criteria for the proper selection of
valve size.
Head Loss Chart
The energy loss that is created by the specific
valve as a result of the flow rate
For information see p.G5-b/c.
For information see p.G5-c.
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AUTOMATIC CONTROL VALVES
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
GENERAL INFORMATION
FEATURES BASIC VALVES
POSITION INDICATOR
(OPTIONAL)
SUSPENSION HOOK
SPRING
FULLY SUPPORTED
DIAPHRAGM
DIAPHRAGM DISCS
SEPARATION DISC (OPTIONAL)
FULLY GUIDED STEM
RUBBER SEAL
SEAL DISC
SEAT
CENTERING GUIDE
DRAINAGE BORE (OPTIONAL)
DOROT'S 300 Series, the latest line of state-of-the-art globe type automatic control valves, is designed to withstand
even the most demanding water control system requirements. The experts at DOROT developed this technically
advanced line with capabilities far beyond any other valve on the market.
Features of the 300 Series
• The capability to regulate near zero flow, as standard
on all sizes, completely eliminating the need for a
special low flow device (throttling plug) or a low flow
bypass valve, while ensuring very low head loss in
"fully open" conditions.
• A standard valve model, fit for all control operations.
A specific pilot(s) provides the required application.
• The flange (face-to-face) dimensions suit ISO Standards.
This allows for quick and easy replacement of old
equipment, without the need for additional pipeline
modifications.
• The valve has an internal floating shaft, allowing for
no friction or leakage, eliminating the need for shaft
sealing. The unique design of the shaft provides for
easy field maintenance.
• The valve has a resilient seal disc, guided by an almost
frictionless centering device.
• The valve's body is made of Ductile Iron, withstanding
both high hydraulic and mechanical stresses.
• A standard single-chambe valve, enabling jam-free
operation in sensitive regulation conditions. If desired,
conversion from a single to a double chambered valve
is easily accomplished through the insertion of Dorot's
innovative separation disc, without the need to remove
the valve from the pipeline during the conversion.
• The valve comes with an easily replaceable seat, made
of SST. It maintains excellent durability against erosion,
ensuring a drip-tight seal.
• During the closing procedure, the pace slows down,
preventing any damage that may occur from water
slam/surge.
• The series includes, as an optional feature, a valve
position indicator, attached by a floating connection
(ball & socket), resulting in smooth movement, with
no wear or tear on the indicator seal.
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AUTOMATIC CONTROL VALVES
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AUTOMATIC CONTROL VALVES
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
±
Position- indicator
as an option
±±
Wide range of control
functions, using
DOROT sophisticated
pilot systems
≤
Manual air release
nut
≥
SST stem,
low- friction guiding
of both ends
±∞
Resilient seal,
guarantees
Drip-tight sealing
¥
Optional seperation
(double chamber)
disc
∏
π
Replaceable,
erosion resistant
SST seal
Seal guide that
enables stabilized
regulation at
near-zero flow
µ
Self- flushing, In
line filter provides
clog- free
performance
∂
∑
Unbreakable Ductile
Iron body, made
to stand
water-hammer
pressures and high
bending and
shearing stresses
Corrosion- resistive
polymer coating
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
ENGINEERING DATA
BASIC VALVE OPERATING MODES
On-Off Mode
Standard (Single Chamber) Valve
Closed Mode: The control pressure (taken from the
pipeline) is applied by the control device to the control
chamber (top of the diaphragm).
The pipeline pressure pushes the seal to open, and the
control chamber pressure forces the diaphragm to close.
Since the diaphragm area is larger than the seal area, it has
greater hydraulic force so the valve remains in the "closed"
position.
creates a second control chamber below the diaphragm,
permitting for the activation of the valve in low-pressure
systems and enabling faster valve response. The response
to varying conditions is quick, since there is no restriction
to diaphragm movement due to the fact that the
relevant part of the control chamber has drained.
The closure pace of the double chambered valve tends to
slow toward the end of the "closing" procedure. This feature
reduce the danger of pressure surges in short pipelines.
Closed Mode: The control pressure (taken from the
pipeline) is applied to the top of the diaphragm. The
bottom control chamber drains.
The pipeline pressure pushes the seal to open, but since
the diaphragm area is larger than the seal area it creates
greater hydraulic force and thus the valve closes.
Separation
Disc
Closed Mode
Open Mode: The control device relieves the pressure
from the control chamber. The pipeline pressure forces the
seal to the "open" position so that the fluid can pass through
the valve.
While the valve is open, outlet pressure is applied to the
lower side of the diaphragm.
Closed Mode
Open Mode: The control device releases the pressure
from the top control chamber.
The seal assembly is forced to the "open" position by
the pipeline pressure, allowing flow through the valve.
Open Mode
Double Chamber Valve (Version D)
The double chamber version is created by inserting a separation
disc between the diaphragm and the seal. This assembly
Open Mode
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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Power-Opening Mode
Double Chamber Valve
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Modulating Mode
This operating mode is selected when the control pressure
is taken from an external source ( a water system with
higher pressure, compressed air, etc...) rather than from
the pipeline. This mode is usually selected when pipeline
pressure is extremely low. The control system is able to
pressurize one chamber while simultaneously draining the
other one.
Closed Mode: The control device applies pressure to
the top chamber while draining the bottom chamber. The
diaphragm is forced down, causing the seal to close the
water passage.
Separation
Disc
General
Positioning the seal a short distance (less than 1/4 of the
seat diameter) from the seat, creates friction and turbulence,
causing energy loss in the fluid passing through the valve.
The results are:
-Reduction of pressure and flow rate.
-Increase of inlet pressure.
The position of the seal assembly is dictated by the volume
of control fluid in the top control chamber which is determined
by the control device.
The control device is operated by hand (manual control), by
electric current (solenoid valve), or by hydraulic pressure
(pilot valves, hydraulic relays). All can be used in standard
(single chamber) valves as well as in double chamber valves.
Modulating mode in standard (single chamber) valves.
Control
Device
Closed Mode
Closed
Open Mode: The control device releases the pressure
from the top control chamber and applies pressure to the
bottom control chamber. The seal assembly is forced to the
"open" position, allowing flow through the valve.
Control
Device
Fully Open
Open Mode
Regulating
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2-Way Control Device
The 2-way control device is assembled on a control circuit,
connecting upstream to downstream through the control
chamber.
There are two restrictors assembled in this circuit:
(a) A nozzle or a needle valve at a fixed opening.
(b) A modulating device (pilot), whose passage may vary
from complete closure (b=o) to a fully open size (when
b>a).
The volume of the control media in the chamber is determined
by the relative passages (a) and (b), or in fact by the opening
of (b), as (a) is fixed.
Closed Mode: Pilot (b) senses a downstream pressure
higher than the set-point and closes passage (b). Through
passage (a) the upstream water flows directly into the upper
part of the control chamber, forcing the diaphragm to close
the valve.
a
b
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Regulating Mode: The pilot is set to the required
downstream pressure. The pilot senses when the downstream
pressure reaches the required value causing passage (b)
to equal passage (a) b=a. Now, water that flows through
the control loop passes from (a) through (b) and into the
downstream. The control media in the upper part of the
control chamber is now steady, keeping the diaphragm and
seal in a fixed position. Any change in the downstream
pressure will change the b=a balance. This change adds or
drains water from the control chamber, thus opening or
closing the main valve until it reaches the balanced regulating
position b=a once again.
a
b
b=a
b=o
Regulating Valve
The 2-way control device provides sensitive, accurate, and
constant modulating, control of the main valve. The main
valve does not fully open, as the control device prevents
total draining of the control chamber.
The 2-way control device is standard in most pressure
regulating valves.
Closed Valve
Open Mode: Pilot (b) senses a downstream pressure
lower than the set-point, and fully opens passage (b), larger
than (a). All the water from the upstream flows through (a)
and (b), directly to the downstream, allowing water from
the upper part of the control chamber to partially drain until
the pressure in the chamber equals the downstream pressure.
Pressure in the upper part of the control chamber is decreased
and the upstream water pressure forces the seal disc to
rise (opening the valve).
a
b
Open Valve
b>a
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3-Way Control Device
Proportional Pressure Reducer
The 3-way control device is a small selector valve which:
1.Permits passage of the control media into the main valve
control chamber (initiating the "closing" procedure),
or
2. Permits drainage of the control media from the control
chamber to the atmosphere (initiating the "opening" procedure).
The proportional pressure reducer is a valve that has a control
chamber permanently connected to the downstream.
This valve must be a double chamber [D] type.
The balance of hydraulic forces created between the high
pressure on the small seal area, and the lower downstream
pressure on the larger diaphragm area, causes a fixed ratio
of inlet/outlet pressure of approximately 3:1.
Some of the 3-way control devices have a third mode as
well, which prevents inflow or outflow from the control
chamber, so that the main valve remains fixed when the
device is in this mode.
This mode is used in on-off valves or when the regulating
valve is fully open, in order to obtain specific operating
conditions. Once in position, there is no water flow through
the control chamber.
The 3-way control device may open the main valve entirely,
creating minimum head loss.
The 3-way control device must be used when external media
(not pipeline water) is used to control the valve, or when
the control media is abrasive.
No other control device is needed.
Non-Return (Check Valve) Mode
Double Chamber Valve
Flow in the normal direction forces the seal to the "open"
position, allowing for free flow. When downstream pressure
exceeds upstream pressure, return flow may occur, causing
the seal disc to instantly close as a result of both hydraulic
force and the spring's force.
Closed Valve
Regular Flow
Open Valve
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
ENGINEERING DATA
COMPONENTS
34
41
42
(Drawing refers to model 30 - 3”, 4” + [D])
40
37
38
39
43
28
26
36
27
23
37
24
35
3
25
33
31
24
30
19
29
20
23
31
30
32
22
14
4
1
6
21
5
15
9
10
3
7
11
16
17
12
13
18
8
2
18a
Component No. Description
1
2
3
4
5
6
7
8***
9
10
11
12
13
14
15
Body
Plug
Plug
Seat
Seat Locking Bolt
Seat Locking Bolt (Long)
ID Tag
Bolt Safety Disc
Seal Disc
Seal
Seal Guide
Spring Washer
Bolt
Shaft
O-Ring
* In double chamber models only.
®
AUTOMATIC CONTROL VALVES
12
13
Material
Component No. Description
Material
Component No. Description
Material
Ductile Iron
Brass
Brass
SST
SST304
SST304
Aluminum
SST
Ductile Iron
Rubber
Bronze + SST
SST316
SST316
SST303
Rubber
16
17
18 (3", 4")
18a***
19*
20*
21*
22*
23
24
25
26
27
28
29
SST316
SST316
SST316
SST316
Rubber
Bronze
Rubber
SST302
Ductile Iron
Rubber
Rubber
SST316
SST316
SST316
Ductile Iron
30 (11/2”-8”)
31 (11/2”-8”)
32 (11/2”-8”)
33
34**
35
36
37
38
39
40
41**
42**
43
Steel (SST)
Steel (SST)
Steel (SST)
Steel
SST304
SST302
Brass/Bronze
Rubber
Rubber
Brass
Brass
Brass
SST304
Steel
Washer
Spring Washer
Nut
Bolt
O-Ring
Separating Disc
O-Ring
Lock Spring
Diaphragm Disc
O-Ring
Diaphragm
Washer
Spring Washer
Nut
Bonnet
** Valves equiped with position indicator only.
Washer
Bolt
Nut
Lifting Ring
Position Indicating Rod
Spring
Guiding Cover
O-Ring
O-Ring
Adapter
Air release Nut
L.S. Actuating Nut
Locking Bolt
Cover Bolt
*** For 11/2”, 2”, 6”-20” Valves.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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The numbers match the component list on the reverse side of the page (G4-a).
37
36
41
35
37
40
29
19
23
33
25
23
28
38
26
34
24
14
15
22 21
20
21
22
9
11
10
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AUTOMATIC CONTROL VALVES
Composite
12
13
6
5
18
17
16
4
2
1
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
ENGINEERING DATA
Dimensions & Weights
Globe Flanged type
Valve - D (Nominal) 50 (2”) 65 (2 12”) 80 (3”) 100 (4”) 150 (6”) 200 (8”) 250 (10”) 300 (12”) 350 (14”) 400 (16”) 450 (18”) 500 (20”)
L (mm)
H (mm)*
h (mm)**
DF(PN16) (mm)
DF(PN25) (mm)
P (CONTROL PORT)
230
235
18
165
165
292
294
18
185
185
310
400
28
200
200
350
433
28
220
240
1”
2
C (CONTROL PORT)
W (mm)
Weight*** (Kg)
Vol. Control Chamber (l)
1”
4
170
12
0.1
170
13
0.1
200
22
0.3
235
37
0.7
40 (1 ”)TH 50 (2”)TH 50 (2”)A/TH 50 (2”)A
215
215
170
208
209
209
220
240
h (mm)**
18
18
18
18
DL (mm)
125
125
106
107
DH (mm)
129
129
129
170
W (mm)
Weight*** (Kg)
7
7
7
12
* Including Position-indicating Rod
1100
1250
145
580
620
415
157
4.3
525
245
9.7
1250
1250
145
715
730
2” BSP
2” BSP
NPT
610
405
18.6
1200
1250
145
620
670
610
510
18.6
850
945
50.0
850
822
50.0
850
980
50.0
Angle Type (A) - Flanged
1
2
D (Nominal)
L (mm)
H (mm)*
1”
2
330
80
1.5
980
990
100
520
555
NPT
NPT
NPT
850
944
100
460
485
730
823
80
410
425
1” 1”
&
4 2
Threaded Type (TH)
Valve
600
650
60
345
360
480
558
40
285
305
80 (3”)A 100 (4”)A 150 (6”)A 200 (8”)A
505
250
295
405
635
415
445
570
60
28
28
40
300
150
173
240
138
147
180
415
200
235
330
20
37
76
** Stroke of the indicator Rod
Global Flanged
End Connections
(For PN16 or PN25)
The valve is supplied in
the following international
flange standards:
ISO 2084,2441,5752 ANSI
B16, AS10, JIS B22.
Other standards on
request.
*** Approximate shipping weight (PN 25)
Globe Threaded
Angle Flanged
h
h
c
h
c
c
H
H
H
p
p
D
p
p
D
W
W
L
L
®
AUTOMATIC CONTROL VALVES
Composite
DF
D
DF
DF
p
p
DH
DL
W
L
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
ENGINEERING DATA
Dimensions & Weights
Globe Flanged type
Valve - D (Nominal)
2”
2 12 ”
3”
L (inch.)
H (inch.)*
h (inch.)**
DF(mod.30) (inch.)
DF(mod.31) (inch.)
P (CONTROL PORT)
9
9
1
16
1
4
11
16
1
2
9
16
11
16
3
16
3
4
1
8
6
6
1
2
1
2
11
11
4”
12
15
1
7 78
7
78
7 165
5
7 16
6”
3
4
1
16
1
8
13
17
1
8 1611
7
9 16
C (CONTROL PORT)
W (inch.)
Weight*** (lbs.)
Vol. (gallons)
7
26
0.03
18
21
1
11
12
1 ”TH
8167
1
84
2”TH
8167
1
84
11
16
7
48
0.08
13
176
0.4
9
82
0.18
5
15
* Including Position-indicating Rod
2”A
8163
7
916
11
16
15
16
3
16
5
15
14”
16”
18”
20”
7
16
3
16
15
16
9
16
5
16
3
16
11
16
1
4
3
16
11
16
49 16
3
49 16
11
5 16
28 18
3
28 4
28
32
3
16 18
3
16 4
33
37
3
18 18
1
19 8
38
39
15
3 16
20 12
7
21 8
43
49
5
22 1316
7
24 16
2” BSP
2” BSP
NPT
1”
2
16
346
1.1
NPT
21
540
2.6
24
892
4.9
3
47
49
5
24 167
3
26 8
24
1123
4.9
33
1810
13.2
33
2082
13.2
33
2159
13.2
Angle Type (A) - Flanged
2”A/TH
61611
11
816
11
16
12”
3
4
3
8
1
8
NPT
Threaded Type (TH)
h (inch.)**
DL (inch.)
DH (inch.)
W (inch.)
Weight*** (lbs.)
23
25
2
13 169
3
14 16
10”
1” 1”
&
4 2
NPT
7
29
0.03
1
2
D (Nominal)
L (inch.)
H (inch.)*
1
16
9
16
3
8
1”
2
1”
4
Valve
8”
7
8
15
16
9
16
1
4
3”A
9 1316
5
1616
1
18
7
58
5 167
7
44
11
16
15
16
3
16
4
4
4
4
5
15
7
27
** Stroke of the indicator Rod
Global Flanged
4”A
11161
1
17 2
1
18
13
6 16
5 1316
9
82
6”A
16
7
2216
9
1 16
7
9 16
7 161
13
168
8”A
19 78
25
3
28
13
11 16
14 163
16
340
End Connections
(For mod.30 or mod.31)
The valve is supplied in
the following international
flange standards:
ISO 2084,2441,5752 ANSI
B16, AS10, JIS B22.
Other standards on
request.
*** Approximate shipping weight (mod.31)
Globe Threaded
Angle Flanged
h
h
c
h
c
c
H
H
H
p
p
D
p
p
D
W
W
L
L
®
AUTOMATIC CONTROL VALVES
Composite
DF
D
DF
DF
p
p
DH
DL
W
L
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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Headloss Charts
The graphs below indicate the hydraulic performance of the various control valves, affected by their control circuits:
Graph #1 - Matches On-Off, 3-Way Controlled Valves (fully open).
Graph #2 - Matches Modulating, 2-Way Controlled Valves.
Graph #3 - Matches Relief Valves (operating at high pressure differentials and high velocity flows)
Graph #1
Relevant Control Valves: Solenoid Controlled (EL), Pressure Reducing (3-Way Control) PR(3W), Flow Rate Control (FR),
Excessive Flow Shut-Off (FE), Differential Float Controlled (FLDI1/FLDI2, FLDI/PS), Altitude Control (AL), Electric Float Controlled
(FL/EL), Pump Control (BC, BC/PS, BC/TO, BC/FR, BC/CD), Pressure Differential Sustaining (DI).
Psi mwc
14
10
Head loss
7
1 1/2” / 2”
10
6”
4”
3”
8”
10”
16” / 18” / 20”
1 2” / 14”
7
5
4
5
3
4
3
2
2
1
10
40
20
60
30
40
80 100
60
200
80 100
300
200
400
600
300 400
1000
600
2000
1000
4000
2000
6000
10000
4000
m3/h
20000 gpm
Flow Rate
*Broken lines indicate data of Angle valves
Graph #2
Relevant Control Valves: Hydraulic Check (CV), Pressure Reducing (PR), Proprtional Pressure Reducing PR(D), Pressure
Reducing & Sustaining (PR/PS), Electrically Controlled Pressure Reducing (PR/EL), Pressure Sustaining (PS), Float Controlled
(FL), Electronically Controlled (EC).
Psi mwc
Head loss
14
10
1 1/2” / 2”
10
6”
4”
3”
8”
10”
1 2” / 14”
16” / 18” / 20”
7
5
7
4
5
3
4
3
2
10
40
20
60
80 100
30
40
60
200
80 100
300 400
200
600
1000
Flow Rate
G5-b
2002
Composite
300 400
2000
600
1000
4000
2000
6000
10000
4000
m3/h
20000 gpm
G5-c 3/3/02 12:38 Page 1
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Graph #3
Relevant Control Valves: Pressure Relief PS(R), Quick Relief safety (QR), Surge Anticipating (RE), Surge Anticipating (Electric
Activation) (RE/EL).
Psi kg/cm2
140
1 1/2” / 2”
10
6”
4”
3”
8”
10”
16” / 18” / 20”
1 2” / 14”
15m/s
Pipeline Pressure
100
70
7
5
6.5m/s
4
50
3
40
30
2
20
1
50
200
70
300
100
400
200
600
300
400
1000
600
2000
1000
4000
2000
6000
3000
10000
5000
20000
10000
m3/h
44000
gpm
Flow Rate
Size Selection Table
Valve Size (all types)
40
1
(1 2 ”)
50 65 80 100 150 200 250 300 350 400 450 500
(2”) (2 12 ”) (3”) (4”) (6”) (8”) (10”) (12”) (14”) (16”) (18”) (20”)
Max. Recommended Flow Rate For
Continuos Operation (m3/h - V=5.5m/s)
25
40
40
90
160
350
Max. Recommended Flow Rate For
Continuos Operation (Gpm - V=18f/s)
110
180
180
400
700
1600 2800 4300 6200 8400 11000 13900 17000
<1 m3/h
Min. Recommended Flow Rate
480
970
1400 1900 2500 3150 3900
(<5 Gpm)
Standard Type
Flow Rate Factor:
Kv (Metric)
Cv (US)
Head Loss Factor K (dimensionless)
43
50
2.2
43
50
5.4
43
50
15.4
103
120
6.7
167
195
5.6
407
475
4.8
676 1160 1600 1600 3300 3300 3300
790 1360 1900 1900 3860 3860 3860
5
9
9
3.8 5.9
5.5 4.5
140
164
3.3
190
222
4.3
460
537
4.3
770
900
4.2
Angle Type
Flow Rate Factor:
Kv (Metric)
Cv (US)
Head Loss Factor K (dimensionless)
60
70
1.3
60
70
2.8
For head loss of fully open valves use
the following equations:
3
H(Bar) =
( Q(mKv/h) )
2
H(Psi) =
V2
( Q(Gpm)
Cv )
2
H = K 2g
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Cavitation Data
Inlet pressure
psi mwc
360 250
340
240
230
320 220
300
210
Noisy
Operating
200
Destructive
Cavitation
280 190
260 180
170
240
160
Case-II
220 150
200
140
Case-I
130
180
120
160 110
Case-III
100
140
120
100
90
80
Safe
Operating
conditions
70
60
80
60
40
50
40
30
20
20
10
Outlet
pressure
0
10
10
20
20
30
30
40
50
40
60
50
70
60
80
90
70
100
80
110
mwc
psi
Cavitation Chart
Limits of operating conditions
The chart above sets the safe limits for valves that are supposed to operate at a considerable pressure differential.
Such conditions generate noise and possible cavitation damages to the valve body.
How to use the chart:
i. Determine the maximal dynamic pressure that may be applied in the inlet of the valve.
ii. Draw an horizontal line from the pressure scale at the left side of the chart
iii. Find the requested outlet pressure in the pressure scale at the bottom of the chart.
iv. Draw an upward line at this point.
v. The intersection of the two lines defines the cavitation characteristics of the valve operation.
- In the case that it falls in the RED zone (case I)- the valve may be damaged in a fairly short time.
- In the case that it falls in the Yellow zone (case II)- the valve may generate a noise that exceeds 80db.
- In the case that the intersection is within the white zone (case III)- the valve will perform safely and quietly
General remark: The cavitation and noise data are based on tests done by the Utah State University, US, and Delft Hydraulic Laboratories, Holland.
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®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
CONTROL VALVE
PILOTS
Pressure Reducing Pilot Valve
Model CX-PR
Description:
A 2/2 "normally open" valve, activated by the main valve's downstream
pressure, applied on a spring-loaded diaphragm. This design includes
a needle valve as an integral component in the pilot body, thus creating
a compact, economical, control circuit for the main valve. A wide water
passage guarantees clog-free operation.
Applications:
Pressure Adjustment
Range:
Pressure Reducing Valves - PR, PR/EL All sizes
Standard Spring 10-200 m (15-300 Psi).
CX-PR
Body, Bonnet
Liquid Passage
Diaphragm, Seal
Springs
Plunger
Needle Bolt
Materials:
Pressure Sustaining Pilot Valve
Model CX-PS
Description:
A 2/2 "normally closed" pilot valve, activated by the main valve's
upstream pressure, applied on a spring-loaded diaphragm. This design
includes a needle valve as an integral component in the pilot body,
thus creating a compact, economical, control circuit for the main valve.
A wide water passage guarantees clog-free operation.
Applications:
Pressure Sustaining Valves PS. All sizes
Pressure Relief Valves PS(R). All sizes
Pressure Adjustment
Range:
CX-PS
Standard Spring 10-230 m (15-330 Psi).
Body, Bonnet
Liquid Passage
Diaphragm, Seal
Springs
Plunger
Needle Bolt
Materials:
®
AUTOMATIC CONTROL VALVES
Composite
Brass (SST optional)
SST
NR Rubber
Coated Steel
SST
SST
Brass (SST optional)
SST
NR Rubber
Coated Steel
SST
SST
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
G6-a
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3-Way Pilot Valve
MY
CY CMY
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Model 31-300
Applications:
Pressure Adjustment
Ranges:
Pressure Reducing Valves - PR (3-W), PR/EL (3-W). All sizes
Standard Spring no. 47 (Green)
Spring no. 42 (Yellow)
Spring no. 50 (Red)
10-70 m (14-100 Psi)
5-20m (8-30 Psi)
20-130m (30-190 Psi)
Materials:
Body and Bonnet
Diaphragm
O-Rings
Springs
Plunger
Brass ISO R 426
NR Rubber ISO 1629
NBR Rubber ISO 1629
SST 302
SST 303
A 3/2 spool type, diaphragm operated, spring-loaded pilot valve. It
selects the N.C., N.O, or plugged connection of its common port in
response to the pressure differential between the high and low
pressure sensing ports.
Applications:
Flow Rate Control Valves FR. All sizes
Excessive Flow Shut-Off Valves FE. All sizes
Differential Pressure Sustaining Valves DI. All sizes
Spring no. 70 2.5-5 m
Spring no. 42 8-38 m
Spring no. 47 14-110 m (Green)
3-7 Psi
11-50 Psi
20-160 Psi
Body, Bonnet, Spring Discs
Springs
Plunger
Diaphragm
O-Rings
Brass ISO R426
SST 302
SST 303
NR Rubber ISO 1629
NBR Rubber ISO 1629
Pressure Reducing Pilot
31-300
Model 76-200
Description:
Materials:
Composite
CM
A 3/2 spool type, diaphragm operated, spring loaded pilot valve. It
selects the N.C., N.O, connection of its common port in response to
the pressure at the sensor port.
Pressure Differential
Adjustment Ranges:
2002
Y
Description:
Pressure Differential Pilot
G6-b
M
76-200
Model 68-410
Description:
A 2/2 , Normally- Open, Spring-loaded adjustable pilot valve, equipped
wi th an SST nozzle f or high- ve lo ci t y and high pre s sure
differential.
Extremely simple, compact structure.
Applications:
pressure reducing valves (PR), sizes 11/2”-4”
Pressure Adjustment
Range:
Spring no. 66 (standard, Green)
Spring no. 78 (Yellow)
Spring no. 67 (Red)
1-110m (15-160 Psi)
5-30m (8-45 Psi)
20-200m (30-290 Psi)
Materials:
Body, Bonnet
Liquid Passage Insert, Needle Bolt
Diaphragm, Seal
Springs
Plunger
Brass ISO R 426
SST 316
NR Rubber ISO 1629
SST 302
SST 303
68-410
Pg .G6-c 3/3/02 13:18 Page 1
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Pressure Sustaining/Relief Pilot Valve
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Model 68-500
Description:
A 2/2, "normally closed", diaphragm operated, spring loaded,
adjustable pilot valve, with SST passages for high velocity stream, SST
sealing seat, and a built-in SST inlet restrictor needle bolt.
Applications:
Pressure Sustaining/Relief Valves - PS (2-W), PS/EL(2-W). Sizes 11/2-4”
Two-Stage Opening Pump Control Valves - BC/TO. Sizes 11 /2 -4”
Pressure Reducing/Sustaining Valves - PR/PS. Sizes 11/2-4”
Pressure Adjustment
Range:
Materials:
Standard Spring (no. 58) (Green)
High Pressure Spring (no.63) (Red)
10-160m(8 - 230 Psi)
20-250m (30-360 Psi)
Body, Bonnet
Liquid Passage Insert, Needle Bolt
Diaphragm, Seal
Springs
Plunger
Brass ISO R 426
SST 316
NR Rubber ISO 1629
SST 302
SST 303
Quick Reacting Pilot Valve
Model 66-300
Description:
A 3/2 diaphragm operated, spring loaded, adjustable pilot valve, with
extremely wide liquid passages; it selects the N.O. or N.C. connection
of the common port in response to the pressure at the sensor port.
Applications:
Quick-Relief Valves - QR. Sizes 2"- 20"
Surge Anticipating Valves - RE. Sizes 2"- 20"
Pressure Sustaining / Relief Valve - PS. Sizes 6”-20”
Pressure Adjustment
Ranges:
Materials:
Standard Spring no. 47 (Green)
Spring no. 42 (Yellow)
Spring no. 50 (Red)
10-70m (14-100 Psi)
5-20m (8-30 Psi)
20-130m (30-190 Psi)
Body, Bonnet, Seat
Spring
Plunger
Diaphragm, Seals
O-Ring
Brass ISO R 426
SST 302
SST 303
NR Rubber ISO 1629
NBR Rubber ISO 1629
Pressure Reducing Pilot Valve
68-500
66-300
Model 68-600
Description:
A 2/2, "normally-open", diaphragm operated, spring loaded, adjustable
pilot valve, with a wide water passage for quick activation of the main
valve. SST seat to prevent erosion caused by high-velocity flow.
Applications:
Pressure Adjustment
Range:
Pressure Reducing Valves - PR, PR/EL. sizes 6"-20".
Standard Spring (no. 42) (Yellow)
High Pressure Spring (no. 47) (Green)
5-120m (8-170 PSI)
20-250m (30-360 PSI)
Materials:
Body, Bonnet
Diaphragm, Seal
Springs
Plunger
Seat
Brass ISO R 426
NR Rubber ISO 1629
SST 302
SST 303
SST 316
68-600
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High Pressure Sustaining/Relief Pilot Valve Model 68-700
Description:
A 2/2, "normally-closed", diaphragm operated, spring loaded, adjustable
pilot valve, with a wide water passage made for quick activation of
the main valve. A SST seat to prevent erosion caused by high-velocity
flow.
Applications:
Pressure Sustaining Valves PS, Sizes 6"-20"
Pressure Relief Valves PS(R), Sizes 6"-20"
Pressure Adjustment
Range:
Materials:
Spring no. 50 (red)
20-250m (30-360 Psi)
Body, Bonnet
Diaphragm, Seal
Springs
Plunger
Seat
Brass ISO R 426
NR Rubber ISO 1629
SST 302
SST 303
SST 316
Altitude Control Pilot Valve (3 Way)
Description:
Level Adjustment
Range:
2002
Composite
Model 70-110
A 3/2 diaphragm operated, spring loaded, adjustable pilot valve. The
enlarged diaphragm is extremely sensitive to pressure variations at
the sensor port, so that even a very slight rise or fall of water level
causes an immediate change to the pilot valve position. The distance
between the high and low water levels is adjustable.
Spring no. 50 (Red)
Spring no. 76 (Black)
2-12 m (6-36 ft)
8-50 m (24-150 ft)
Differential Adjustment:
Spring no. 50
Spring no. 76
0.3-4 m (1-12 ft)
Applications:
Materials:
Altitude Control Valves - AL. All sizes
Body and Bonnet
Diaphragm Housing
Plunger
Spring
Diaphragm
0-Rings
Flow Rate Control Pilot Valve
Altitude Control Pilot Valve (2 Way)
G6-d
68-700
70-110
1-4 m (3-12 ft)
Brass ISO R 426
Bronze BS 1400 LG2
SST 303
SST 302
NR Rubber ISO 1629
NBR Rubber ISO 1629
Model 76-600
Description:
A 2/2 diaphragm operated, spring loaded, adjustable pilot valve. The
enlarged diaphragm is extremely sensitive to pressure variations at
the sensor port, so that even a very slight pressure variation causes
an immediate change to the pilot valve position.
Level Adjustment
Range:
Differential Adjustment:
Spring no. 50 (Red)
Spring no. 76 (Black)
2-12 m (6-36 ft)
8-50 m (24-150 ft)
Spring no. 50
Spring no. 76
0.3-4 m
1-4 m
Applications:
Altitude Control Valves - AL. All sizes
Flow Rate Control Valves - FR. All sizes
Materials:
Body and Bonnet
Diaphragm Housing
Plunger
Spring
Diaphragm
0-Rings
Brass ISO R 426
Bronze BS 1400 LG2
SST 303
SST 302
NR Rubber ISO 1629
NBR Rubber ISO 1629
76-600
Pg .G6-e 3/3/02 13:29 Page 1
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2-Way Relay
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Model 28-200
Description:
A 2/2 N.O. pilot valve, activated by a diaphragm and the system
pressure. Wide passages permit clog-free water flow in the main
valve control system. Applying pressure at the relay's control port
causes the passages to close.
Applications:
The conversion of automatic valves to hydraulic or pneumatic remote
control.
Materials:
Body, Control Chamber Cover
Diaphragm, Seal
O-Ring
Plunger
Accelerator Relay
Brass ISO R 426
NR Rubber ISO 1629
NBR Rubber ISO 1629
SST 303
Model 66-200
Description:
A 3/2 diaphragm operated, spring loaded pilot valve, with extremely
wide liquid passages. It selects the N.O. or N.C. connection of the
common port in response to the pressure at the sensor port.
Applications:
Pump Control Valves BC - Sizes 6"-20"
Solenoid Controlled Valves EL - Sizes 6"-20"
Accelerating response of all non-modulating valves.
Sewage and effluent control.
Operation Pressure:
At the N.O. Port
At the N.C. Port
Max.-250 m (360-Psi)
Max.-100 m (150-Psi)
Materials:
Body and Bonnet
Diaphragm, Seals
Spring
Plunger
O-Ring
Brass ISO R 426
NR Rubber ISO 1629
SST 302
SST 303
NBR Rubber ISO 1629
Electric Float Pilot
28-200
66-200
Model 70-200
Description:
A pear-shaped, water-proof container with an internal, electric contactor
which is connected to a 3-wire, electric cable. The electric contactor
alters its connections while the float moves from a horizontal to a
vertical position.
The user can select a N.O. or N.C. connection.
Applications:
Electric Data:
Materials:
Electric Float Controlled Valves EL/FL. All sizes
Up to 380V, 4A Control Current
Plastics or NR Hard Rubber
Float Pilot Valve
70-200
Model 70-400
Description:
A 2/2 pilot valve, activated by a lever and float. Vertical movement
of the float opens or closes the pilot. A rising level closes the pilot,
and a falling level opens the pilot.
The pilot is usually located at a distance from the main valve and is
connected to it by a command tube.
Applications:
Materials:
Float Control Valves FL. All sizes
Body, Lever
Float Ball
Seal
Brass ISO R 426
SST 304
NR Rubber ISO 1629
70-400
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Differential Float Pilot Valve
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Model 70-550
Description:
A 2/2, 3/2 or 4/2 pilot valve, operated by lever assembly, float and
balancing weight. It retains its position until the float reaches a preset
high or low level. It can be assembled on the valve or separately.
Applications:
Level Differential
Adjustment:
Differential Float Controlled Valves FLDI1. All sizes
Materials:
Body, Levers, Weight, and Stoppers
Plunger
Float Rod
Float Ball
O-Rings
Springs
5-180 cm 2"-70" (standard)
It is possible to extend this range by adding 60 cm (24") float rod
segments.
Differential Float Pilot
Brass ISO R 426
SST 303
SST 303
POLYANIDE
NBR Rubber ISO 1629
SST 302
Model 70-610
Description:
A 2/2 or 3/2 valve, activated by a float and arm. It enables the setting
of a maximum water level in the tank/reservoir, and the adjustment
of the lowest level. The pilot can either be attached to the main valve
(when it is assembled on top of the tank) or separately.
Applications:
Differential Float Controlled Valves FLDI2. All sizes
Pressure Differential
Adjustment Ranges:
Materials:
10-40 cm (4-10")
Body, Arm
Float
Plunger
O-Rings
Brass ISO R426
SST 304
SST 303
NBR Rubber ISO 1629
Electric Solenoid Valve
G6-f
2002
Composite
70-550
Description:
A 2/2 or 3/2 pilot valve, activated by an electric current.
The 3/2 type is a selector valve, selecting the upstream connection
(closing) or the relief connection (opening) to the main valve's control
chamber. It is used mainly in 3-way control systems.
The 2/2 type opens or closes its passage on receiving the electric
current. It is used in 2-way control systems.
Both types can be supplied in "normally open" (N.O.) or "normally
closed" (N.C.) modes.
Applications:
Solenoid Controlled Valves EL
Electric on-off or other control valves PR/EL, PS/EL, FL/EL, etc...)
A solenoid valve should be selected when considering operating mode:
(2/2, 3/2, N.O., N.C.)
Electric Data:
Voltage is 24V AC (standard). Others on request.
Frequency is 50 HZ (standard). 60 HZ on request.
Power consumption: 6-12w according to type.
Coil Closure: Rainproof IP 65 (standard). Others on request.
Materials:
Body
Operator, tube
Plunger
Seals
Brass (standard), SST (on request)
SST
SST
NR Rubber
70-610
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
CONTROL VALVE
ACCESSORIES
3-Way Control Valve
A manually operated selector, connecting one of the three control ports to the
common port.
Applications:
Manual override of automatic control.
Hydraulic/pneumatic on-off control.
Materials:
Body
Ball
Seals
Sizes:
3 mm, 6 mm bore
Brass
Chrome-Plated Brass
Teflon
2-Way Cock Valve
A manually operated ball valve, allowing quick on-off operation.
Applications:
Isolates the control systems from the pressure
sources.
On-off control in 2-way systems
Materials:
Body
Ball
Sizes:
1/4", 1/2"
Brass
Chrome Plated Brass
Needle Valve
A 2/2 globe-type, adjustable mini-valve.
Applications:
Restriction of the opening or closing pace of the
main valve.
Upstream flow restriction on 2-way control systems.
Materials:
Sizes:
Chrome-Plated Brass or Stainless Steel.
®
AUTOMATIC CONTROL VALVES
Composite
1/4", 1/2"
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
G7-a
2002
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Non-Return Check Valve
A spring-loaded, wide passage, mechanical valve, that permits free flow in one
direction, but prevents reverse flow.
Applications:
All control valves (adding non-return function).
Pump control valves.
Bi-direction altitude control valves.
Materials:
Body
Spring
Sizes:
1/2
Brass
Stainless Steel
Self-Flushing Internal Filter
A screen filter, located within the main valve, and rinsed continuously by the
stream. The filtration element is removable for cleaning.
Applications:
Filtration of activation water in all automatic control
valves.
Materials:
Body
Screen
Sizes:
81 1/2" - 2 Thread
81 1/4" - 24 Thread
Brass
Stainless Steel
Limit Switch Assembly
A roller-operated electric switch, assembled on a steel bracket. The switch position
is adjustable, N.O. or N.C. connection according to system requirement.
G7-b
2002
Composite
Applications:
Electric indication of valve position.
Pump control valves.
Electrical Data:
10 A, 380V Connectors
IP 65 Enclosure
81- 1 2 -2
81- 1 4 -24
Pg. 1A-1 3/3/02 14:32 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
EL
SOLENOID CONTROLLED VALVE
DOROT model “EL” is an automatic, solenoid controlled
valve, activated by the pressure of the pipeline.
The valve is controlled by an electric solenoid valve, which
initiates the connection of upstream pressure to the main
valve control chamber. This either causes the valve to close
or the control chamber to drain, thus opening the valve.
The standard mode of the main valve is "normally closed"
(N.C.). An electric signal opens the standard valve.
" Normally open" (N.O.) valves are supplied on request. This valve
will be closed by an electric signal.
The standard electric current of the solenoid is 24VAC,50Hz.
Various coils, suitable to other electric currents are supplied on
request.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p.G5; and graph #1 on page G5-b.
For solenoid data refer to p.G6-f.
30-6-EL
Typical Application:
Control
Center
The valves are activated from a central control point by electric command.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
1A-1
2002
Pg. 1A-2 5/3/02 7:56 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert values)
• The valve will be controlled by an electric solenoid valve
(electric data).
• The main valve will be "normally closed" ("normally open").
• The main valve will be a hydraulically operated, diaphragm
actuated, Globe Type.
b
a
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
d
c
The control system will consist of:
- Solenoid Valve.
- Self-Flushing, Removable, Internal Filter.
The valve shall be DOROT mod. 30 (31) -(size) - EL or equal
in all aspects.
a. 3-Way Solenoid Valve
b. Accelerator Relay Mod. 66-200
(For 8” or larger valves)
c. 1/2” Self-Flushing Filter Mod.81-1/2-2
d. 1/2” Ball Valve Mod.34-1/2
Operating Data Checklist
Design Notes
(Please fill out and send to the distributor when ordering)
The maximum operating pressure, liquid quality, and required
response time of the main valve, dictate solenoid valve
selection.
Maximum Flow Rate:
Consult DOROT or your local distributor.
Maximum Upstream Pressure:
Calculation of the electric conduits, connecting the valve
to the control center, should prevent energy loss in excess
of 10% of nominal solenoid voltage.
Electric Control Current:
Optional Features
Indirect control, using a hydraulic relay to boost the solenoid
command, is used on larger valves (8" or larger) or in the
case of abrasive control media.
External control pressure source (air, water).
Hydraulic Check Valve (add code "CV").
See p. 1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
1A-2
2002
Composite
30
6
ISO PN16
Control
Function
EL
/
Additional
Features
Check Valve
Special
Instructions
CV
Position Indicator
Pg. 1B-1 3/3/02 14:54 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
CV
HYDRAULIC CHECK VALVE
DOROT model “CV” is an automatic control valve, activated
by the pressure of the pipeline.
The valve is in the “open” position when the upstream
pressure is higher than the downstream pressure.
Should the upstream pressure drop below of the downstream
pressure, the valve will instantly close, preventing return
flow.
Opening and closing speeds are adjustable in order to prevent
pressure surges caused, for example, by pump start-up and
sudden valve closure.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p.G5; and graph #2 on page G5-b.
30-6-CV
Typical Application:
The "CV" Valve, assembled at the pump discharge, opens gradually on pump start-up and closes automatically,
(at a controlled speed), on pump shut-off.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
1B-1
2002
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
• The valve will prevent return flow when the downstream
pressure exceeds the upstream pressure.
c
a
• The valve will be "open" during normal operating conditions.
• Opening and closing paces will be adjustable.
b
• The main valve will be a hydraulically operated, diaphragm
actuated, double chambered, Globe Type.
c
• The main valve will consist of a removable SST seat and
resilient Rubber seal, fully supported by a seal disc.
• The stem will be guided at the top by a replacable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
The control system will consist of:
- Control Chamber Connections (to the downstream side).
- Needle Valves
- Check Valves
The valve shall be DOROT mod. 30 (31) -(size) - CV or equal
in all aspects.
a. Needle Valve Mod.34-1/4NE (closing)
b. Needle Valve Mod.34-1/4NE (opening)
c. Check Valve Mod 21-1/2
Design Notes
Operating Data Checklist
(Please fill out and send to the distributor when ordering)
The "CV" Valve creates a certain pressure loss.
Refer to headloss chart.
Maximum Flow Rate:
Maximum Upstream Pressure:
Optional Features
Electric On-Off Control (add code "EL").
See p. 1A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
30, 30A (Inch): 11/2”- 20”
31, 31A
1B-2
2002
Composite
30
6
Connection
Standard
ISO, ANSI,
JIS etc.
Control
Function
ISO PN16
CV
/
Additional
Features
Electric On-Off Control
Special
Instructions
EL (N.O.)
Position Indicator
Pg. 2A-1 3/3/02 15:11 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PR
PRESSURE REDUCING VALVE
DOROT model “PR” is an automatic, pilot controlled, pressure
reducing valve, activated by the pressure of the pipeline.
The valve reduces upstream pressure to a steady, predetermined
downstream pressure, regardless of fluctuation of upstream
pressure and flow rate.
Should downstream pressure exceed the required set-point
(due, for example, to a halt in pipeline flow), the valve closes
drip-tight.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p.G5; and graph #2 on page G5-b.
For pilot data refer to p. G6- a.
30-6-PR
Typical Application:
High Pressure
Area
PR
QR
(Optional)
Low Pressure
Area
The "PR" Valve limits the pressure in a demand area to a preset value, regardless of flow or upstream pressure.
Installation of a "QR" Quick Relief Valve, downstream of the "PR" Valve, may prevent excessive pressure in case of extreme
pressure or flow fluctuation.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
2A-1
2002
Pg. 2A-2 5/3/02 8:02 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
• The valve will maintain constant stabilized downstream
pressure (value) regardless of varying upstream pressure.
a
• The valve will regulate any flow within the specified range
without the need for a smaller bypass valve or throttling
plug.
b
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
• The main valve will consist of a removable SST seat and a
resilient Rubber seal, fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device connected to the seal disc and moving
freely inside the seat.
b
• No bottom guide bearing will be permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
c
• No external packing gland and piston activation will be
permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
a. CX-PR Pilot Valve
The control system will consist of:
- 2-Way Pilot Valve
- Self-Flushing, Removable, Internal Filter
- Manual Closure Valve
b. 1/2” Manual Ball Valve Mod.34-1/2
c. 1/2” Self-Flushing Filter Mod.81-1/2-2
The valve shall be DOROT mod. 30 (31) -(size) - PR or equal
in all aspects.
Design Notes
Operating Data Checklist
The "PR" Valve creates a defined minimum pressure differential.
This loss must be incorporated in the design.
(Please fill out and send to the distributor when ordering)
Refer to the head loss chart in cases where upstream pressure may drop
to the downstream pressure set-point.
Maximum Flow Rate:
Regulating valves may operate in destructive cavitation
conditions.
Maximum Upstream Pressure:
Minimum Upstream Pressure:
Refer to p. G6 for further information .
Required Downstream Pressure:
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for futher information.
Hydraulic Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
2A-2
2002
Composite
30
6
ISO PN16
Control
Function
PR
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 2B-1 3/3/02 15:27 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PR(3W)
PRESSURE REDUCING VALVE
(3 WAY CONTROL)
DOROT model "PR(3w)" is an automatic, pilot controlled, pressure
reducing valve, activated by the pressure of the pipeline.
The valve reduces upstream pressure to a steady, predetermined
downstream pressure, regardless of fluctuation of upstream pressure
and flow rate.
Should downstream pressure exceed the required set-point (due,
for example, to a halt in pipeline flow), the valve closes drip-tight.
If upstream pressure falls to the preset downstream value, and
throttling is unwanted, the valve fully opens, with negligible pressure
loss.
The valve’s response to pressure variation is very rapid, due to its
double chamber control.
The main valve is supplied in two models:
Model 30D, 30AD for medium pressure (up to 16 bar / 230 psi)
Model 31D,31AD for high pressure (up to 25 bar / 350 psi).
For further information see p.G5; and graph #1 on page G5-b.
For pilot data refer to p. G6-b.
30D-6-PR(3W)
Typical Application:
PR(3W)
The "PR(3W)" Valve limits the pressure in the network, but fully opens when the pump pressure drops, due to an increased
demand.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
2B-1
2002
Pg. 2B-2 5/3/02 8:04 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
• The valve will maintain constant, steady downstream pressure
(value) regardless of varying upstream pressure.
• The valve will be able to regulate any flow within the specified
range, eliminating the need for a smaller bypass valve or
throttling plug.
a
• The minimum pressure differential will not exceed 1.5m
(2 psi).
• The valve will be a hydraulically operated, diaphragm actuated,
double chambered, Globe Type.
b
• The main valve will consist of a removable SST seat and
Resilient rubber seal, fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control chamber
below the diaphragm.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
c
c
d
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752 (S-1) Standard.
• Flange standard will be to (network standard).
a. 3-Way Pilot Valve Mod.31-300
b. Selector Valve Mod. SY3
The control system will consist of:
- 3-Way Pilot Valve (permits main valve to fully open).
- Self-Flushing, Removable, Internal Filter.
- Manual Override Selector Valve.
c. 1/2” Ball Valve Mod.34-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
The valve shall be DOROT mod. 30[D] (31[D]) -(size) - PR(3W)
or equal in all aspects.
Design Notes
Regulating valves may operate in destructive cavitation
conditions.
Operating Data Checklist
Refer to p. G6 for further information.
(Please fill out and send to the distributor when ordering)
Optional features
Maximum Flow Rate:
Electric On-Off Control (add code "EL").
Maximum Upstream Pressure:
When ordering specify "normally closed" (N.C.) or "normally open" (N.O.).
See p. 1A-1 for further information.
Minimum Upstream Pressure:
Hydraulic Check Valve Function (add code "CV").
Required Downstream Pressure:
See p.1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30[D], 30A[D] (Inch): 11/2”- 20” Standard
31[D], 31A[D]
ISO, ANSI,
JIS etc.
2B-2
2002
Composite
30[D]
6
ISO PN16
Control
Function
PR(3W)
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 2C-1 3/3/02 15:37 Page 1
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PR[D]
®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PROPORTIONAL PRESSURE
REDUCING VALVE
DOROT model PR[D] is an automatic, pressure reducing valve,
activated by the pressure of the pipeline.
The valve creates a fixed ratio between upstream pressure and
downstream pressure, regardless of fluctuations of upstream
pressure and flow rate.
The valve is a double chamber [D] type. Its control chamber is
permanently connected to the downstream.
Downstream pressure, applied to the top side of the diaphragm,
creates hydraulic power which is balanced by the power created
by upstream pressure to the seal disc. The area difference between
the diaphragm and the seal disc determines the pressure ratio of
approximately 2.7:1.
No other control device is needed.
Should downstream pressure exceed the above mentioned ratio
(due, for example, to a halt in the pipeline flow), the valve closes
drip tight.
The valve instantly closes when downstream pressure exceeds
upstream pressure, serving as a check valve.
The main valve is supplied in two models:
Model 30D, 30AD for medium pressure (up to 16 bar / 230 psi)
Model 31D, 31AD for high pressure (up to 25 bar / 350 psi).
30D-6-PR[D]
For further information see p.G5; and graph #2 on page G5-b.
Typical Application:
PR[D]
PR[D]
PR
PR[D]
The "PR[D]" Valves, installed sequentially, reduce the pressure
in the main pipe.
®
AUTOMATIC CONTROL VALVES
Composite
Assembly of a "PR[D]' Valve, upstream of a "PR" Valve,
creates a two-stage, cavitation-free, pressure reducing
station.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
2C-1
2002
Pg. 2C-2 5/3/02 8:08 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
• The valve will maintain downstream pressure at a 1:2.7 ratio
to upstream pressure, regardless of varying upstream pressure
and flow rate.
• The valve will be a hydraulically operated, diaphragm actuated,
double chambered, Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control chamber
below the diaphragm.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
The valve shall be DOROT mod. 30D (31[D]) -(size) - PR[D]
or equal in all aspects.
Design Notes
Operating Data Checklist
The downstream pressure of the "PR[D]" Valve is not fixed
to a preset value but is a function of the upstream pressure.
(Please fill out and send to the distributor when ordering)
Beware of possible excessive downstream pressure in sensitive
networks when upstream pressure is very high.
Maximum Flow Rate:
The pressure ratio is effected by the flow rate and by
upstream pressure. Increased flow tends to increase
pressure ratio.
Maximum Upstream Pressure:
Minimum Upstream Pressure:
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally closed" (N.C) or "normally open"(N.O.).
See p. 1A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Size
Connection
Model
30[D], 30A[D] (Inch): 11/2”- 20” Standard
31[D], 31A[D]
ISO, ANSI,
JIS etc.
2C-2
2002
Composite
30[D]
6
ISO PN16
Control
Function
PR[D]
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 2D-1 3/3/02 15:51 Page 1
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®
Automatic Hydraulic Control
AUTOMATIC CONTROL VALVES
PR/PS
PRESSURE REDUCING
& SUSTAINING VALVE
DOROT model “PR/PS”is an automatic, pilot controlled,
pressure reducing and sustaining valve, activated by the
pressure of the pipeline.
The valve remains in the "closed" position until the upstream
pressure increases to a predetermined point. Then, it modulates
to maintain a preset pressure in the network, upstream of
its location.
Should the upstream pressure exceed the required set-point,
the valve opens, increasing the network flow, thus reducing
the upstream pressure and increasing downstream pressure.
Then, the valve reduces upstream pressure to a steady,
predetermined downstream pressure, regardless of fluctuation
in upstream pressure and flow rate.
Should downstream pressure exceed the preset pressure,
(due, for example, to a halt in the pipeline flow), the valve
closes drip-tight.
The main valve is supplied in two models:
Model 30,30A for medium pressure (up to 16 bar / 230 psi)
Model 31,31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to p. G6-a.
30-6-PR/PS
Typical Application:
The "PR/PS" Valve, installed on the discharge side of a pump that supplies the downhill network, prevents excessive flow
through the filling stage, as well as excessive pressure during normal operation.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
2D-1
2002
Pg. 2D-2 3/3/02 15:48 Page 1
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Purchase Specifications
Schematic Control Diagram
(Insert value)
a
• The valve will maintain a preset (or >) upstream pressure
of (value). It will close drip-tight if the upstream pressure
falls below the specified (value).
• As long as the upstream pressure exceeds the specified setpoint, the valve will maintain constant, stabilized downstream
pressure (value) regardless of varying upstream pressure
or flow rate.
b
c
• The valve will be capable of regulating any flow within the
specified range, eliminating the need for a smaller bypass
valve or throttling plug.
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
• The main valve will consist of a removable SST seat and a
resilient Rubber seal fully supported by a seal disc.
c
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
d
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
a. CX-PS Pilot Valve
b. CX-PR Pilot Valve
The control system will consist of:
- 2-Way Pilot Valves
- Self-Flushing, Removable, Internal Filter.
- Manual Closure Valve
c. 1/2” Ball Valve Mod.34-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
The valve shall be DOROT mod. 30 (31) -(size) - PR/PS or
equal in all aspects.
Design Notes
The "PR/PS" Valve creates a defined minimum pressure
differential. This loss must be incorporated in the design.
Operating Data Checklist
Refer to the head loss chart in case upstream pressure drops to the
downstream pressure set-point.
(Please fill out and send to the distributor when ordering)
An excessively high setting of upstream pressure may
prevent the downstream pressure from reaching the desired
value. The upstream set-point should not considerably
exceed the required downstream set-point.
Maximum Flow Rate:
Maximum Upstream Pressure:
Requested Minimum Upstream Pressure:
Regulating valves may operate in destructive cavitation
conditions.
Requested Maximum Downstream Pressure:
Refer to p. G6 for further information.
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally closed" (N.C) or "normally open" (N.O).
See p.A-1 for further information.
Check Valve Function (add code "CV").
See p.1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
2D-2
2002
Composite
30
6
ISO PN16
Control
Function
PR/PS
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 2E-1 4/3/02 8:21 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PR/EL
ELECTRICALLY CONTROLLED
PRESSURE REDUCING VALVE
DOROT model "PR/EL" is an automatic, pilot controlled,
pressure reducing valve, activated by the pressure of the
pipeline.
The valve reduces upstream pressure to a steady predetermined
downstream pressure, regardless of fluctuation of upstream
pressure and flow rate.
Should downstream pressure exceed the required set-point
(due, for example, to a halt in pipeline flow), the valve closes
drip-tight.
The valve's opening is controlled by an electric solenoid valve
that connects the control chamber to the main valve outlet.
This either causes the valve to close, or the control chamber
to drain through the main valve outlet, thus activating the
(opening) regulating mode.
The standard mode of the main valve is "normally closed"
(N.C.). The electric signal opens the standard valve.
"Normally open" (N.O.) valves are supplied on request. An electric
signal closes the valve.
The standard electric current of the solenoid is 24VAC, 50Hz.
Various coils, suitable to other electric currents are supplied on
request.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
30A-6-PR/EL
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to p. G6-a.
For solenoid data refer to p. G6-f.
Typical Application:
Control
Center
The "PR/EL" Valves control the pressure in their respective networks. The valves are opened or closed by electric remote
control.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
2E-1
2002
Pg. 2E-2 4/3/02 8:14 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
• The valve will maintain constant, steady downstream pressure
regardless of varying upstream pressure.
a
b
• The valve will be able to regulate any flow within the specified
range, eliminating the need for a smaller bypass valve or a
throttling plug.
• The valve will be controlled by an electric solenoid valve
(electric data).
• The main valve will be "normally closed" (N.C.) ("normally
open") (N.O.).
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
c
c
• The main valve will consist of a removable SST seat and
resilient Rubber seal, fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
d
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted..
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
a. CX-PR Pilot Valve
b. Solenoid Valve
c. 1/2” Ball Valve Mod.34-1/2
The control system will consist of:
- 2-Way Pilot Valve
- Electric Solenoid Valve
- Self-Flushing, Removable, Internal Filter.
- Manual Closure Valve
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
The valve shall be DOROT mod. 30 (31) -(size) - PR/EL or
equal in all aspects.
Design Notes
The "PR/EL" Valve creates a defined minimum pressure
differential. This loss must be incorporated in the design.
Refer to the head loss chart in case upstream pressure drops to the
downstream pressure set-point.
Operating Data Checklist
Regulating valves may operate in destructive cavitation
conditions.
(Please fill out and send to the distributor when
Refer to p. G5-d for further information.
Maximum Flow Rate:
Maximum Upstream Pressure:
Optional Features
Required Downstream Pressure:
Hydraulic Check Valve Function (add code "CV").
Electric Control Current:
See p. 1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
2E-2
2002
Composite
30
6
ISO PN16
Control
Function
PR/EL
Additional
Features
Check Valve
/
CV
Special
Instructions
Position Indicator
Pg. 3A-1 4/3/02 8:46 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PS
PRESSURE SUSTAINING VALVE
DOROT model “PS” is an automatic, pilot controlled, pressure
sustaining valve, activated by the pressure of the pipeline.
The valve will maintain a steady, predetermined pressure
in the network, upstream of its location.
Should the upstream pressure exceed the required set-point,
the valve opens, increasing network flow, thus reducing its
upstream pressure.
If upstream pressure falls below the required value, the valve
closes drip-tight.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to p. G6-a.
30-6-PS
Typical Application:
The "PS" Valve is installed on the discharge of a pump, supplying the lower network.
The "PS" Valve maintains the minimum required pressure
in elevated demand areas, when the network flow increases.
®
AUTOMATIC CONTROL VALVES
Composite
The "PS" Valve maintains a preset pressure in the pump,
preventing excessive flow, cavitation, and surges
throughout the system filling stage.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
3A-1
2002
Pg. 3A-2 4/3/02 8:41 Page 1
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Schematic Control Diagram
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MY
CY CMY
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Purchase Specifications
(Insert value)
• The valve will maintain constant, steady upstream pressure.
a
• The valve will modulate according to the varying network
flow.
b
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal, fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
b
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
c
The control system will consist of:
- 2-Way Pilot Valve
- Self-Flushing, Removable, Internal Filter.
- Manual Closure Valve.
a. CX-PS Pilot Valve
The valve shall be DOROT mod. 30 (31) -(size) - PS or
equal in all aspects.
b. 1/2” Manual Ball Valve Mod.34-1/2
c. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
Operating Data Checklist
The "PS" Valve creates a defined minimum pressure differential.
This loss must be incorporated in the design.
(Please fill out and send to the distributor when ordering)
Refer to p.G5-b.
Maximum Flow Rate:
Regulating valves may operate in destructive cavitation
conditions.
Maximum Upstream Pressure:
Refer to p.G5-d for further information.
Requested Upstream Pressure:
Optional Features
Electric On-Off Control (add code "EL").
When ordering, specify "normally open" (N.O) or "normally closed" (N.C).
See P. 1A-1 for futher information.
Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Size
Connection
Model
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
3A-2
2002
Composite
30
6
ISO PN16
Control
Function
PS
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 3B-1 4/3/02 10:12 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PS(R)
PRESSURE RELIEF VALVE
DOROT model “PS(R)” is an automatic, pilot controlled,
pressure relief valve, activated by the pressure of the pipeline.
The valve is mounted on a T-junction in the pipeline and
modulates to maintain a steady predetermined pressure in
the network by releasing excess pressure.
Should upstream pressure exceed the required set-point,
the valve opens, increasing pump flow and thus reducing
its pressure.
If upstream pressure falls below the preset value, the valve
closes drip-tight.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p.G5; and graph #3 on page G5-c.
For pilot data refer to p. G6- a.
30-6-PS(R)
Typical Application:
The "PS(R)" Valve maintains preset maximum pressure in the network by relieving excess pressure to the pump suction
side (pump bypass) or to the atmosphere.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
3B-1
2002
Pg. 3B-2 4/3/02 10:15 Page 1
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Schematic Control Diagram
M
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CM
MY
CY CMY
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Purchase Specifications
(Insert value)
• The valve will maintain constant steady upstream pressure.
• The valve will modulate according to the varying network
pressure.
a
b
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
b
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted..
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
c
The control system will consist of:
- 2-Way Pilot Valve
- Self-Flushing, Removable, Internal Filter.
- Manual Closure Valve
The valve shall be DOROT mod. 30 (31) -(size) - PS(R) or
equal in all aspects.
a. CX-PS Pilot Valve
b. 1/2” Manual Closure Valve Mod.34-1/2
c. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
Operating Data Checklist
The valve should be sized according to the flow created by
the pump at the pressure set-point.
(Please fill out and send to the distributor when ordering)
The relief valve operates at a high pressure differential.
Flow velocity may be extremely high therefore the draining
pipe should be larger than the valve size.
Required Network Pressure:
Pump Flow (at the required pressure):
Regulating valves may operate in destructive cavitation
conditions.
Refer to p. G6 for further information.
Optional Features
Electric On-Off Control (add code "EL").
When ordering, specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
3B-2
2002
Composite
30
6
ISO PN16
Control
Function
PS(R)
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 3C-1 4/3/02 8:37 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
QR
QUICK RELIEF SAFETY VALVE
DOROT model “QR” is an automatic, pilot controlled, quick
relief safety valve, activated by the pressure of the pipeline.
The valve, mounted on a T-junction in the pipeline, releases
water from the network.
Should the upstream pressure exceed the safe value, the
valve instantly opens to its fully open position, preventing
a possible pressure surge.
When the network pressure falls to the required value, the
valve slowly closes to avoid a pressure surge that may be
caused by a sudden flow reduction.
The main valve is supplied in two models.
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #3 on page G5-c.
For pilot data refer to p. G6-c.
30-6-QR
Typical Application:
The "QR" Valve, assembled upstream of the valve that controls the filling of the tank, instantly opens if the pressure rises
to an unsafe value, due to sudden valve closure.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
3C-1
2002
Pg. 3C-2 4/3/02 8:38 Page 1
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Purchase Specifications
Schematic Control Diagram
(Insert value)
• The valve will open to the fully open position within 1 second
of the upstream pressure exceeding the set-point.
a
• The valve will close, at an adjustable pace, when the pressure
drops to the set-point.
b
• The pressure differential between opening and closing
positions will not exceed 10% of the set-point.
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
c
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
c
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
d
The control system will consist of:
- Fast-Acting Relief Pilot Valve.
- Needle Valve.
- Self-Flushing, Removable, Internal Filter.
a. Fast-Reacting Pilot Mod.66-300
b. Needle Valve Mod.34-1/4-NE
c. 1/2” Ball Valve Mod.34-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
The valve shall be DOROT mod. 30 (31) -(size) - QR or equal
in all aspects.
Design Notes
Operating Data Checklist
The valve size should accomodate the flow created by the
pump at the pressure set-point.
(Please fill out and send to the distributor when ordering)
The relief valve operates in high pressure differentials.
The flow velocity may be extremely high and the diameter
of the draining pipe should be larger than the valve size.
Maximum Network Flow Rate:
Pump Flow At Maximum Pressure:
The valve is not a modulating type, therefore cannot be
used for pressure regulation.
See PS(R) p. 3B-1 for further information.
Surges generated by the pump shut-off cannot be prevented
by the Quick Relief Valve.
Refer to RE p. 6F-1 for further information
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally open" (N.O) or "normally closed" (N.C).
See p. 1A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
3C-2
2002
Composite
30
6
ISO PN16
Control
Function
QR
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 4A-1 4/3/02 11:30 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
FR
FLOW RATE CONTROL VALVE
DOROT model "FR" is an automatic, pilot controlled, rate-offlow control valve, activated by the pressure of the pipeline.
The valve maintains a preset, steady flow rate in the network,
regardless of pressure variations and flow demand.
The valve fully opens when the flow demand is below the
preset maximum value or when the system pressure cannot
supply the required flow. In such cases the head loss of the
valve is negligible.
An orifice plate is assembled on the upstream flange of the
valve, creating a small pressure differential when the required
flow rate passes through it.
A 3-way differential pilot valve, sensing the pressure on both
sides of the orifice plate, is set to maintain the preset differential,
hence the flow rate.
The pilot opens the main valve only if the flow is below the
preset value, or closes it, when the flow exceeds the preset
value.
The main valve is supplied in two models:
Model 30, 30A for medium pressures (up to 16 bar / 230 psi)
Model 31, 31A for high pressures (up to 25 bar / 350 psi).
30-6-FR
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to p. G6- d.
Typical Application:
The "FR" Valves, installed in independent outlets of a pressure system, limit the flow of each outlet to the preset value.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
4A-1
2002
Pg. 4A-2 4/3/02 11:17 Page 1
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Schematic Control Diagram
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MY
CY CMY
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Purchase Specifications
(Insert value)
• The valve will limit the flow rate to (value) regardless of
varying pressure or demand.
• The valve will be controlled by a differential pilot valve, sensing
pressure differentials created by an orifice plate.
a
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
b
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
d
c
c
e
• Flange standard will be to ( network standard) .
The control system will consist of:
- 2-Way Differential Pilot Valve
- Orifice Plate
- Manual Override Selector Valve
- Self-Flushing, Removable, Internal Filter.
a. 2-Way Differential Pilot Mod. 76-600
b. Manual Selector Valve Mod. SY3
c. 1/2” Ball Valve Mod.34-1/2
d. 1/2” Filter
The valve shall be DOROT mod. 30 (31) - (size) - FR or equal
in all aspects.
(assembled upstream of the valve)
e. Orifice Plate
Design Notes
Operating Data Checklist
The orifice plate is calculated to create 2-2.5m (3-3.5 psi)
pressure loss at the designed flow rate.
(Please fill out and send to the distributor when ordering)
A pressure sensing port, 1/2” minimum size, should be
provided upstream of the valve.
Required Flow Rate:
Maximum Upstream Pressure:
A predesigned flow rate may be modified by pilot adjustment
in limited (-10%, +40% approx.) range. Alarger change will
require a new orifice plate.
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for further information.
Hydraulic Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Pressure Reduction (add code "PR").
See p. 2A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
4A-2
2002
Composite
30
6
ISO PN16
Control
Function
FR
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 4B-1 4/3/02 11:55 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
FE
EXCESSIVE FLOW
SHUT-OFF VALVE
DOROT model “FE” is an automatic, pilot controlled, rateof-flow control valve, activated by the pressure of the pipeline.
The valve is fully open when the flow is below the preset
maximum value.
The valve automatically closes when its flow rate exceeds
the preset value.
An orifice plate is assembled on the upstream flange of the
valve, creating a small pressure differential when the required
flow rate passes through it.
A differential pilot valve simultanously senses the upstream
pressure of the orifice and the pressure at the valve outlet.
Should the flow increase above the set-point (due, for example,
to pipe rupture), the pilot immediately closes the main valve.
Reopening is done by a manual override selector valve in
the control system.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #1 on page G5-b.
For pilot data refer to p. G6- b.
30-6-FE
Typical Application:
The "FE" Valve, located on a gravity-fed pipeline, automatically closes when the flow rate exceeds the normal value
(due, for example, to pipe rupture).
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
4B-1
2002
Pg. 4B-2 5/3/02 8:15 Page 1
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Schematic Control Diagram
M
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CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
• The valve will limit the flow rate to (value). It will automatically
close when the flow rate, in its location, exceeds the above
mentioned flow rate by 10%.
• The valve will be controlled by a differential pilot valve, sensing
pressure differentials created by the flow across the main
valve.
• A manual opening device will enable reopening of the main
valve if closed by the automatic system.
• The main valve will be a hydraulically operated, diaphragm
actuated, Globe Type.
a
b
d
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
d
c
• Flange standard will be to ( network standard) .
a. 3-Way Differential Pilot Mod. 31-400
The control system will consist of:
- 3-Way Differential Pilot Valve
- Orifice Plate
- Manual Override Selector Valve
- Self-Flushing, Removable Internal Filter.
b. Manual Selector Valve Mod. SY3
c. 1/2” Isolating Ball Valve Mod.34-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
The valve shall be DOROT mod. 30 (31) - (size) - FE or equal
in all aspects.
Design Notes
Operating Data Checklist
The orifice plate is calculated to create 1-1.5m (1.5-2 psi)
pressure loss at the maximum flow-rate.
(Please fill out and send to the distributor when ordering)
A pressure sensing port, 1/2” minimum size, should be
provided upstream of the valve.
Maximum Flow Rate:
Maximum Upstream Pressure:
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for further information.
Hydraulic Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
4B-2
2002
Composite
30
6
ISO PN16
Control
Function
FE
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 5A-1 4/3/02 12:21 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
FL
FLOAT CONTROLLED VALVE
DOROT model "FL" is an automatic, pilot controlled, level
control valve, activated by the pressure of the pipeline.
The valve is mounted on the tank or reservoir inlet, below
or above the requested water level.
The float pilot can either be assembled on the main valve,
(for above-level installation) or can be connected to the main
valve by a command tube.
The valve closes when the water level rises, thus raising the
float to its closed position. It opens when the float descends
due to a drop in water level. The difference between maximum
and minimum levels is very small and is affected by the
length of the float pilot arm. In practice, the water level is
maintained continously at the maximum point as long as the
upstream flow exceeds the downstream flow.
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to p. G6-e.
30-6-FL
Typical Application:
Vacuum
Valve
The "FL" Valve, located below water level, prevents overflow
and return flow. The pilot float valve is connected to the
main valve by a command tube.
®
AUTOMATIC CONTROL VALVES
Composite
The "FL" Valve, located on top of the tank, prevents
overflow.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
5A-1
2002
Pg. 5A-2 5/3/02 8:18 Page 1
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Schematic Control Diagram
M
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CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
b
a
• The valve will be controlled by a float-operated pilot valve,
located in the tank.
• The main valve will be installed below the water level or on
top of the tank.
c
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
d
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
e
The control system will consist of:
a. Float Pilot Mod. 70-400
- 2-Way Float Valve
- SST Needle Valve
- Manual Closure Valve
- Self-Flushing, Removable, Internal Filter.
b. SST Needle Valve Mod.34-1/4NE-1
c. Manual Selector Mod. SY3
d. 1/2” Ball Valve Mod.34-1/2
The valve shall be DOROT mod. 30 (31) - (size) - FL
or equal in all aspects.
e. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
Operating Data Checklist
The float must be surrounded by a partition wall, creating
a still water surface.
(Please fill out and send to the distributor when ordering)
Maximum Flow Rate:
Maximum Upstream Pressure:
Optional Features
Electric On-Off Control (add code "EL").
When ordering specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for futher information.
Hydraulic Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Back Pressure Sustaining (add code "PS").
See p. 3A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
5A-2
2002
Composite
30
6
ISO PN16
Control
Function
FL
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 5B-1 4/3/02 12:34 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
DIFFERENTIAL FLOAT
CONTROLLED VALVE
FLDI 1
FLDI 2
DOROT model “FLDI1/FLDI2” is an automatic, pilot controlled,
level control valve, activated by the pressure of the pipeline.
The valve is mounted on the tank or reservoir inlet, below
or above the requested water level .
The float pilot can either be assembled on the main valve
(for above-level installation), or can be connected to the main
valve by command tubes.
The standard valve closes when the water rises to the
requested maximum level and opens when the water level
drops to the preset minimum point.
High level opening/low level closing valves are supplied on
request.
The Differential Float Valves are available in two versions:
1. FLDI1, equipped with float pilot model 70-550, enabling
level differentials of 5-160cm (2”- 63”).
2. FLDI2, equipped with float pilot model 70-610, enabling
level differentials of 5-40cm (2”-16”).
30-6-FLDI1
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5 ; and graph #1 on page G5-b.
For pilot refer to p. G6-f.
Typical Application:
closed
closed
1
1
2
2
open
open
The "FLDI1" Valve prevents the frequent start and stop of
flow by providing a large difference between maximum (1)
and minimum (2) water levels in the tank.
®
AUTOMATIC CONTROL VALVES
Composite
The "FLDI2" Valve permits the permanent utilization of
the entire tank's capacity, through the use of smaller level
differentials.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
5B-1
2002
Pg. 5B-2 5/3/02 8:21 Page 1
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Schematic Control Diagram
M
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CM
MY
CY CMY
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Purchase Specifications
(Insert value)
a1
• The valve will be controlled by a differential float-operated
pilot valve, located in the tank.
• The main valve will be installed below the water level, or on
top of the tank.
a
• The requested level differential is (the maximum
differential).
b
• The valve will be a hydraulically operated, diaphragm actuated,
(double chambered) Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal, fully supported by a seal disc.
c
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc, moving freely
inside the seat.
d
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
a. Differential Float Pilot Mod. 70-550
or
a1. Differential Float Pilot Mod. 70-610
• No external packing gland and piston activation is permitted.
• Face to face length dimension meets ISO 57529S-10 Standard.
b. Manual Selector Valve Mod. SY3
• Flange standard will be to (system standard).
c. 1/2” Isolating Ball Valve Mod.34-1/2
The control system will consist of:
- 3-Way/4-Way Float Valve (70-550)
- Manual Override Selector Valve
- Self-Flushing, Removable, Internal Filter.
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
The valve shall be DOROT mod. 30 [D] (31[D]) - (size) FLDI1/FLDI2 or equal in all aspects.
The float must be surrounded by a partition wall, creating a still
water surface.
Closure of the valve can cause serious pressure surges if the
supply pipe is long.
Operating Data Checklist
Refer to SP p. 7C - 1 for surge protection information.
(Please fill out and send to the distributor when ordering)
Optional Features
Required Flow Rate:
Electric On-Off Control (add code "EL").
Maximum Upstream Pressure (on closed valve):
When ordering specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for further information.
Level
Hydraulic Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Maximum:
Surge-Preventing Closure (add code "SP").
Minimum:
See P. 7C-1 for further information.
Back-Pressure Sustaining (add code "PS").
See p. 3A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
5B-2
2002
Composite
30
6
ISO PN16
Control
Function
Additional
Features
Electric On-Off Control
FLDI1/FLDI2 / EL (N.O.)
Special
Instructions
Position Indicator
Pg. 5C-1 4/3/02 12:48 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
AL
ALTITUDE CONTROL VALVE
DOROT model “AL” is an automatic, pilot controlled, level
control valve, activated by the pressure of the pipeline.
The valve is mounted on the tank or reservoir inlet, below
or above the requested water level.
The pilot valve, located outside the tank or reservoir, senses
the hydrostatic pressure of the water level. The pilot valve
can either be assembled on the main valve or (for abovelevel installation) can be connected to the main valve by
command tubes.
The standard valve closes when the water rises to the
requested maximum level and opens when the water level
drops to the preset minimum point.
High level opening / low level closing valves are supplied on
request.
The "Altitude Control Valves" are available in two versions:
1. The "One-Way Flow Valve" (standard feature), prevents
returning flow even if downstream pressure exceeds
upstream pressure when the supply pump shuts down.
2. The "Bi-Directional Flow Valve" (add code "BD"), allows for
reverse flow when the upstream pressure drops below
the tank static pressure.
30-6-AL
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
Typical Application:
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to G6-d.
1
2
The "AL" Valve controls maximum and minimum levels in a water tower by responding to the static pressure of the water.
One–way flow (filling only) or bi-directional flow are optional.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
5C-1
2002
Pg. 5C-2 5/3/02 8:23 Page 1
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Schematic Control Diagram
M
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CM
MY
CY CMY
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Purchase Specifications
(Insert value)
Tank
• The valve will be controlled by a pilot valve which is operated
by hydrostatic pressure and is located outside the tank.
• The pilot closes (opens) the valve when the water reaches
the maximum level and opens (closes) it when the water
level drops to its preset minimum point.
• Reverse flow will be permitted when the upstream pressure
is lower than the tank’s hydrostatic pressure. (For bi-directional
flow, add code, "BD").
• The main valve will be installed (value) below the maximum
water level.
• Requested levels differential is (minimum differential).
• The main valve will be a hydraulically operated, diaphragm
actuated, (double chambered) Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
The control system will consist of:
- 2-Way Altitude Control Pilot.
- Manual Override Selector Valve.
- Self-Flushing, Removable, Internal Filter.
The valve shall be DOROT mod. 30 (31) - (size) - AL or equal
in all aspects.
a
b
c
d
a. 2 Way Altitude Pilot Mod.76-600
b. Manual Selector Valve Mod. SY3
c. 1/2” Ball Valve Mod.34-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
The pilot valve must be located at least 2m (6 ft.) below
the minimum level. The maximum level should not be more
then 50m (160 ft.) above the pilot valve.
Closure of the valve can cause serious pressure surges
if the supply pipe is long.
Refer to SP p. 7C-1 for surge protection information..
Operating Data Checklist
Optional Features
(Please fill out and send to the distributor when ordering)
Electric On-Off Control (add code "EL").
See p. 1A-1 for further information.
Surge-Preventing Closure (add code "SP").
Required Flow Rate:
Back Pressure Sustaining (add code "PS").
Maximum Upstream Pressure (on closed valve):
Bi-Directional (add code "BD").
Level Above Valve
See p. 7C-1 for further information.
See p. 3A-1 for further information.
Maximum:
Minimum:
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
5C-2
2002
Composite
30
6
ISO PN16
Control
Function
AL
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 5D-1 4/3/02 12:58 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
FL/EL
ELECTRIC FLOAT
CONTROLLED VALVE
DOROT model “FL/EL” is an automatic, solenoid controlled,
level control valve, activated by the pressure of the pipeline.
The valve is mounted on the tank or reservoir inlet, below
or above the water level.
An electric float pilot is mounted in the tank or reservoir in
such a way that it will be in a vertical position when the water
reaches its minimum level, and in a horizontal position when
the water level rises to the required maximum level.
The electric contacts, built in the float, connect and disconnect
the electric signal to the solenoid, according to the float
position, initiating the main valve's opening or closing.
The valve closes when the water rises to the requested
maximum level, and opens when the water level drops to
the preset minimum point.
The valves are available in two versions:
1.Normally Closed (N.C.) - the float connects the signal to
open the valve.
2.Normally Open (N.O.) - the float connects the signal to
close the valve.
30-6-FL/EL
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #1 on page G5-b.
For solenoid data refer to p. G6-e.
Typical Application:
Electricity
Source
1
2
The "FL/EL" Valve controls maximum and minimum water levels in a tank, through the position of an electrical float in the tank.
The valve may be located at a distance from the tank, activated through an electric wire.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
5D-1
2002
Pg. 5D-2 5/3/02 8:28 Page 1
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Schematic Control Diagram
M
Y
CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
0
c
• The valve will be controlled by an electric float pilot (or electric
probes) located in the tank.
• The valve will open (or close) by an electric signal, activated
by the float.
• The valve will be in the closed or (open) position when the
electric signal is off.
• The main valve will be a hydraulically operated, diaphragm
actuated, (double chambered) Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal, fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
b
a
d
e
a. Solenoid valve.
b. Electric Float Mod.70-200
c. Electricity Source (not supplied)
d. 1/2” Ball Valve Mod.34-1/2
The control system will consist of:
- Electric Float Pilot
- Solenoid Valve
- Self-Flushing, Removable, Internal Filter.
e. 1/2” Self-Flushing Filter Mod.81-1/2-2
Note: Main valve is "normally closed" (N.C.)
The float is connected at the N.C. mode while in
the vertical position.
The valve shall be DOROT mod. 30 (31) - (size) - FL/EL or
equal in all aspects.
Design Notes
The preferred position of the valve, when power failure
occurs, dictates the selection of the N.O. or N.C. mode.
Operating Data Checklist
Closure of the valve can cause serious pressure surges
if the supply pipe is long.
(Please fill out and send to the distributor while ordering)
Refer to section SP p. 7C-1 for surge protection information.
Required Flow Rate:
Optional Features
Upstream Pressure (on closed valve)
Hydraulic Check Valve Function (add code "CV").
Maximum:
See p. 1B-1 for further information.
Minimum:
Surge-Preventing Closure (add code "SP").
See P. 7C-1 for further information.
Electric Current:
Pressure Sustaining (add code "PS").
Normal Position: closed / opened
See P. 3A-1 for further information.
Activation by electric probes instead of the float.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
5D-2
2002
Composite
30
6
ISO PN16
Control
Function
FL/EL
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 5E-1 4/3/02 13:12 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
FLDI/PS
DIFFERENTIAL FLOAT CONTROLLED/
PRESSURE SUSTAINING VALVE
The DOROT model “FLDI/PS” is an automatic, pilot controlled,
level control valve, activated by the pressure of the pipeline.
The valve is mounted on the tank or reservoir inlet, below
or above the requested water level.
The main valve fully opens when the water level drops to
a preset low point, enabling full flow into the tank, or closes
partially when the level rises to the maximum value, limiting
the flow.
High level opening / low level throttling valves are supplied
on request.
A float pilot is assembled on the main valve (for above-level
installation) or separately, connected to the main valve by
command tubes.
A pressure sustaining pilot controls the main valve's opening.
The float pilot, responding to the water level, activates this
pilot.
The main valve is supplied in two models:
Model 30, 30A for medium pressures (up to 16 bar / 230psi)
Model 31, 31A for high pressures (up to 25 bar / 350psi).
30-6-FLDI/PS
For further information see p. G5; and graph #1 on page G5-b.
For pilot data refer to G6-f and G6-a.
Typical Application:
Demand
Area
"FL" Valve
"FLDI / PS"
Valve
The main pump supplies booster pump suction.
The "FLDI/PS" Valve, installed at the booster discharge,
reduces the flow when the water level in the sump drops
to the minimum level. The valve fully opens when the water
level rises.
®
AUTOMATIC CONTROL VALVES
Composite
The main pump supplies a demand area, surplus is accumulated in a water tower.
The "FLDI/PS" Valve, controlling tower filling, maintains
constant demand area pressure, regardless of fluctuating
demand flow.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
5E-1
2002
Pg. 5E-2 5/3/02 8:32 Page 1
C
Schematic Control Diagram
M
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CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
T
B
• The valve will limit the flow according to the water level in
the tank, limiting the tank filling (draining) when water rises
(drops) to a preset level.
P
P
T
V
• A differential float-operated pilot valve, located in the tank,
will activate the main valve.
b
• Limitation of the flow will be adjustable.
c
• The main valve will be installed below the water level or (on
top of the tank).
a
• Levels differential is (differential between fully
open level and throttling level).
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
d
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
d
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
e
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way, which
enables fast and easy replacement on site.
a. 70-550 Float Pilot Valve
b. CXPS Pilot Valve
c. 28-200 Relay
d. 1/2” Ball Valve
e. 1/2” Self-Flushing. Inline filter
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
Design Notes
The control system will consist of:
- 3-way Float Valve
- Pressure Sustaining Pilot Valve
- Manual override selector valve
- Self-Flushing, Removable, Internal Filter.
The “FLDI/PS” Valve is selected when the supply to the
tank does not match the demand from the tank, and the
frequent start/stop of flow should be prevented in order
to avoid surges, pump shut-off, etc...
The valve shall be DOROT mod. 30 (31) - (size) - FLDI1/PS
or equal in all aspects.
The valve coordinates supply and demand in the tank, so
it can be used in the tank's inlet (limiting the supply) or in
the outlet (limiting the demand).
Closure of the valve can cause serious pressure surges
if the supply pipe is long.
Operating Data Checklist
Refer to SP p. 7C-1 for surge protection information.
(Please fill out and send to the distributor when ordering)
Optional Features
Reguested Flow Rate:
On-Off Control (add code "EL").
Maximum Upstream Pressure (on closed valve):
When ordering specify "normally open" (N.O.) or "normally closed" (N.C.).
See p. 1A-1 for further information.
Upstream Pressure (at the throttled position):
Hydraulic Check Valve Function (add code "CV").
See p. 1B-1 for further information.
Surge-Preventing Closure (add code "SP").
See p. 7C-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
5E-2
2002
Composite
30
6
ISO PN16
Control
Function
FLDI/PS
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 6A-1 4/3/02 13:48 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
BC
PUMP CONTROL VALVE
DOROT model “BC” is an automatic, solenoid controlled
valve, activated by the pressure of the pipeline.
The valve is installed on the pump discharge. It opens slowly
on start-up of the pump, until it is fully open, and gradually
closes prior to the pump shut-off, preventing pressure surges
caused by a rapid change of water velocity in the discharge
pipe.
Both opening and closing speeds are adjustable.
A limit switch, assembled on the main valve bonnet, is
connected to the pump control panel and switches off the
pump motor when the valve is completely closed.
In case of a power or pump failure, the valve instantly closes,
performing as a fast-reacting check valve.
The main valve is "normally closed" (N.C.). The electric signal
opens the valve.
The standard electric current of the solenoid is 24VAC, 50Hz.
Various coils, suitable to other electric current are supplied on request.
The main valve is supplied in two models:
Model 30D for medium pressures (up to 16 bar / 230 psi)
Model 31D for high pressures (up to 25 bar / 350 psi).
30D-6-BC
For further information see p. G5; and graph #1 on page G5-b.
For solenoid data refer to p. G6- f.
Typical Application:
"RE" Valve
(Optional)
The "BC" Valve prevents surges caused by the start-up of a pump. It closes slowly before the pump shuts off, gradually
reducing pipeline velocity, protecting the network from water hammer and draining. Assembly of an "RE" Valve downstream
of the "BC" Valve protects the network when electric power failure occures.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6A-1
2002
Pg. 6A-2 5/3/02 8:36 Page 1
C
Schematic Control Diagram
M
Y
CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
f
b
a
d
f
d
e
c
a. 24VAC N.C. Solenoid
b. Limit Switch Mod.40-LS & Bracket Mod.48-LB
c. 1/2” Self-Flushing Filter Mod.81-1/2-2
d. Check Valve Mod.21-1/2
e. 1/2” Ball Valve Mod.34-1/2
f. Needle Valve Mod.34-1/2-NE
Design Notes
Refer to the head loss chart (in this section) and select the
smallest valve which satisfies the allowed pressure loss
at the duty point of the pump.
Closure time is related to main pipe length. Closure time
should be extended as the pipe is longer.
The "BC" Valve cannot prevent water hammer in case of
power failure. A surge-anticipating valve "RE" should be
used if such an occurrence is expected.
See RE p. 6F-1 for further information.
• The valve will be controlled by an electric solenoid valve
(electric data). It will be equipped with a position
indicator, a limit switch, and an opening/closing speed
adjustment device.
• The valve will open simultaneously with the pump and will
be in the "fully open" position through normal pump operation,
creating a maximum pressure loss of (value).
• On termination of the electric signal, the valve will begin
closing slowly. It will initiate motor shut-off when completely
closed.
• The valve will instantly close when the downstream pressure
exceeds the upstream pressure, regardless of the electric
control mode.
• The main valve will be a hydraulically operated, diaphragm
actuated, double chambered, Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control chamber
below the diaphragm.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• The valve will be equipped with a position-indicating rod.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
The control system will consist of:
- Solenoid Valve with Manual Override
- Needle Valves
- Check Valves
- Self-Flushing, Removable, Internal Filter.
- Limit Switch
The valve shall be DOROT mod. 30[D] (31[D]) - (size) - BC
or equal in all aspects.
A simple electric circuit should be added to the pump
control panel, to facilitate the interlink with the "BC" Valve.
Operating Data Checklist
Optional Features
(Please fill out and send to the distributor when ordering)
Pressure Sustaining (add code "PS").
Maximum Flow Rate:
See p. 3A-1 for further information.
Flow Rate Control (add code "FR").
Operating Pressure:
See p. 4A-1 for further information.
Electric Control Current:
Two-Stage Opening (add code "TO").
See p. 6C-1 for further information.
Extended closure (add code "CD").
See p. 6D-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Size
Connection
Model
30[D], 30A[D] (Inch): 11/2”- 20” Standard
31[D], 31A[D]
ISO, ANSI,
JIS etc.
6A-2
2002
Composite
30[D]
6
ISO PN16
Control
Function
BC
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Bronze Body
Pg. 6B-1 4/3/02 14:11 Page 1
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M
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CY CMY
K
®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
DW
DEEP WELL CONTROL VALVE
DOROT model “DW” is an automatic, solenoid controlled
valve, activated by the pressure of the pipeline.
The valve is installed on a T-junction on the discharge bend
of a vertical turbine or submersible pump, upstream of the
check valve.
The valve is in the “open” position while the pump motor
starts, releasing the initial flow out.
The valve slowly closes, gradually increasing the pressure
in the main valve, until all the flow is directed to the network.
Before the pump stops, the valve slowly opens, reducing
the system pressure, at an adjustable pace, preventing
pressure surges caused by fast changes in pipeline flow
velocity.
A limit switch, assembled on the bonnet of the main valve,
is connected to the pump control panel, and switches off
the motor when the valve has opened completly.
In case of a power failure the valve fully opens.
The main valve is "normally open" (N.O.). An electric signal
closes the valve.
The standard electric current of the solenoid is 24VAC, 50Hz.
30D-6-DW
Various coils, suitable to other electric curents, are supplied on request.
The main valve is supplied in two models:
Model 30D for medium pressures (up to 16 bar / 230 psi)
Model 31D for high pressures (up to 25 bar / 350 psi).
For further information see p.G5; and graph #1 on page G5-b.
For solenoid data refer to p.G6- f.
Typical Application:
"DW" Valve
Non-Slam
Air / Vacuum
Valve
"RE" Valve
(Optional)
Check Valve
The "DW" Valve, assembled on the discharge of a vertical turbine pump, prevents excess pressure and possible damage
to the turbine. Adding an “RE” Valve, downstream of the check valve, is recommended to protect the network in case
of power failure.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6B-1
2002
Pg. 6B-2 5/3/02 8:39 Page 1
C
Schematic Control Diagram
M
Y
CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
• The valve will be controlled by two electric solenoid valves
(electric data). They will be equipped with a position
indicator, a limit switch, and an opening/closing speed
adjustment device.
f
d
f
• The valve will be "normally open" and will close by way of
an electric signal, at an adjustable speed.
a
b
e
• On termination of the electric signal, the valve will slowly
open. When completely open, it will switch off the motor.
c
• The main valve will be a hydraulically operated, diaphragm
actuated, double chambered, Globe Type.
Pressure
Source
(downstream
of the pump
check valve)
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control chamber
below the diaphragm.
• The stem will be guided at the top, by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
a. N.C. 24VAC Solenoid Mod.30-NC
b. N.O. 24VAC Solenoid Mod.30-NO
c. 1/4” Needle Valve Mod.34-1/4-NE
(closure pace adjustment)
d. 1/4” Needle Valve Mod.34-1/4-NE
(opening pace adjustment)
e. 1/2” Self-Flushing Filter Mod.81-1/2-2
f . Limit Switch Mod.40-LS & Bracket Mod.48-LB
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• The valve will be equipped with a position-indicating rod.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
Design Notes
• Flange standard will be to (network standard).
Refer to your pump curve and the pressure/flow chart (in
this section). Select the smallest valve that relieves the
flow, corresponding to pump pressure, required for network
static pressure (= Surface Static Pressure + Water Level
Below Ground).
The control system will consist of:
- Solenoid Valves with Manual Override
- Needle Valves
- Check Valves
- Self-Flushing, Removable, Internal Filter
The valve shall be DOROT mod. 30[D] (31[D]) - (size) - DW
or equal in all aspects.
Opening time is related to main pipe length and so should
be extended if the pipe is longer.
Operating Data Checklist
The "DW" Valve cannot prevent a pressure surge during
a power failure. A surge-anticipating valve "RE" should be
used if such an occurrence is expected.
(Please fill out and send to the distributor when ordering)
Refer to RE p. 6F-1 for further information.
Normal Flow Rate of the Pump:
A simple electric circuit should be added to the pump
control panel to facilitate the interlink with the "DW" Valve.
Duty Point Pressure:
Static Pressure:
Optional Features
Water Level Below the Surface:
Quick Relief (add code "QR").
See p. 3C-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Size
Connection
Model
30[D], 30A[D] (Inch): 11/2”- 20” Standard
31[D], 31A[D]
ISO, ANSI,
JIS etc.
6B-2
2002
Composite
30[D]
6
ISO PN16
Control
Function
DW
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Bronze Body
Pg. 6C-1 4/3/02 14:31 Page 1
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CY CMY
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®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
PUMP CONTROL/
PRESSURE SUSTAINING VALVE
BC/PS
BC/TO
DOROT models “BC/PS" and “BC/TO” are automatic, solenoid
controlled valves, activated by the pressure of the pipeline.
The valve is installed on the pump discharge in a downhill pumping
system, where the network drains when the pump is idle.
The valve slowly opens on start-up of the pump, maintaining
preset back pressure in the pump discharge. This prevents
excess flow through the network filling stage which can cause
cavitation damage to the pump, pressure surges, and may even
cause electric motor overload.
The valve fully opens, following the complete filling of the main
pipe, when the network pressure rises to the normal duty point.
The valve creates a negligible pressure loss when fully open.
The valve gradually closes, prior to pump shut-off, preventing
pressure surges caused by the rapid change in pipe velocity.
A limit switch, assembled on the main valve bonnet, is connected
to the pump control panel and switches off the motor when the
valve has completed closing.
In case of power or pump failure, the valve instantly closes,
performing as a fast-reacting check valve.
The main valve is "normally closed" (N.C.). The electric signal
opens the valve.
The standard electric current of the solenoid is 24VAC, 50Hz.
Various coils, suitable to other electric currents are supplied on request.
30D-6-BC/PS
The main valve is supplied in two models:
Model 30D for medium pressure (up to 16 bar / 230 psi)
Model 31D for high pressure (up to 25 bar / 350 psi).
Typical Application:
The "BC/PS" Valves, assembled on the discharge of each
pump in a pumping station, maintain back-pressure on the
pump through the start-up stage, protecting the pump from
excess flow, cavitation, and motor overload.
®
AUTOMATIC CONTROL VALVES
Composite
For further information see p. G5; and graph #1 on page G5-b.
For pilot data refer to p. G6- a.
For solenoid data refer to p. G6- f.
The "BC/TO" Valve, provides throttled flow through the
network filling stage, opening fully when the system
pressure rises to the normal operating value.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6C-1
2002
Pg. 6C-2 5/3/02 8:42 Page 1
C
Schematic Control Diagram
M
Y
CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
g
b
b
e
a
c
• The valve will be controlled by an electric solenoid valve
(electric data) and a diaphragm-operated, spring
loaded, pressure sustaining, adjustable pilot valve.
• The valve will open simultaneously with the pump and will
be in the "fully open" position through normal pump operation,
creating a maximum pressure loss of (value).
• The valve will be equipped with a position indicator, a limit
switch, and an opening/closing speed adjustment device.
• On termination of the electric signal, the valve will slowly
close. When the valve is completely closed, it will initiate
motor shut-off.
c
f
• The main valve will be a hydraulically operated, diaphragm
actuated, double chambered, Globe Type.
d
• The main valve will consist of a removable SST seat and
resilient Rubber seal, fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control
chamber below the diaphragm.
a. N.O. 24VAC Solenoid Mod.30-NO
b. 1/4” Needle Valve Mod.34-1/4-NE
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
e. Limit Switch Mod.40-LS & Bracket Mod.48-LB
• No bottom guide bearing is permitted.
f. 1/2” Ball Valve Mod.34-1/2
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
c. 1/2” Check Valve Mod.21-1/2
g. CX-PS Pilot Valve
• The valve will be equipped with a position-indicating rod.
• No external packing gland and piston activation is permitted.
Design Notes
• Face-to-face length dimension meets ISO 5752 (S-1) Standard.
The two-stage opening valve ("BC/TO") should be selected
when the upstream pressure of the valve, through the
filling phase, is unknown (when the pump is supplying
a n o t h e r n e t w o r k s i m u l t a n o u s l y, f o r e x a m p l e ) .
The upstream pressure should be set to a point which is
slightly lower than the normal duty point.
Refer to the head loss chart (in this section) and select
the smallest valve which satisfies the allowed pressure
loss at the duty point of the pump.
• Flange standard will be to (network standard).
The control system will consist of:
- Solenoid Valve with Manual Override
- Pressure Sustaining Pilot Valve
- Needle Valves
- Self-Flushing, Removable, Internal Filter
- Limit Switch
The valve shall be DOROT mod. 30[D] (31[D]) - (size) - BC/PS,
BC/TO or equal in all aspects.
Operating Data Checklist
A simple electric circuit should be added to the pump
control panel to facilitate the interlink with the "BC/PS" or
"BC/TO" Valve.
(Please fill out and send to the distributor when ordering)
Maximum Flow Rate:
Optional Features
Operating Pressure:
Minimum Upstream Pressure:
Extended Closure (add code "CD").
See section p. 6D-1 for further information.
Electric Control Current:
Please specify the requested valve in the following
sequence (see example below):
How To Order
Size
Connection
Model
30[D], 30A[D] (Inch): 11/2”- 20” Standard
31[D], 31A[D]
ISO, ANSI,
JIS etc.
6C-2
2002
Composite
30[D]
6
ISO PN16
Control
Function
BC/PS
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Bronze Body
Pg. 6D-1 4/3/02 14:43 Page 1
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CY CMY
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®
Automatic Hydraulic Control
AUTOMATIC CONTROL VALVES
BC/CD
PUMP CONTROL/
EXTENDED CLOSURE VALVE
DOROT model "BC/CD" is an automatic, solenoid controlled,
valve, activated by the pressure of the pipeline.
The valve is installed on the pump discharge, connected to
uphill-leading long pipelines.
On start-up of the pump, the valve slowly opens, at an
adjustable pace, until it is fully open, creating negligible
pressure loss.
Prior to pump shut-off, the valve begins its closing procedure.
If downstream pressure drops below the static pressure
(due to rapid closure), the valve will temporarily stop the
closing procedure, preventing pressure surges caused by
the rapid change in the pipe velocity.
A limit switch, assembled on the main valve bonnet, is
connected to the pump control panel. This switch turns off
the motor when the valve has completed closing.
In case of power or pump failure, the valve instantly closes
performing as a fast-reacting check valve.
The valve comes "normally closed" (N.C.). An electric signal
opens the valve.
The standard electric current of the solenoid is 24VAC, 50Hz.
Various coils, suitable to other electric currents are supplied on request.
The main valve is supplied in two models:
Model 30D for medium pressure (up to 16 bar / 230 psi)
Model 31D for high pressure (up to 25 bar / 350 psi).
30D-6-BC/CD
For further information see p.G5; and graph #1 on page G5-b.
For pilot data refer to p. G6- a.
For solenoid data refer to p.G6- f .
Typical Application:
"RE" Valve
(Optional)
10Km
The "BC/CD" Valve is assembled on the discharge port of a pump that supplies a long pipeline. The valve automatically
performs the “extended closure” procedure, before the pump stops, preventing dangerous pressure surges.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6D-1
2002
Pg. 6D-2 4/3/02 14:36 Page 1
C
Schematic Control Diagram
e
b
c
b
c
c
f
f
d
d
Y
CM
MY
CY CMY
K
Purchase Specifications
g
a
M
a. N.O. 24VAC Solenoid
b. 1/4” Needle Valve Mod.34-1/4-NE
c. 1/2” Check Valve Mod.21-1/2
d. 1/2” Self Flushing Filter Mod.81-1/2-2
e. Limit Switch Mod.40-LS + Bracket Mod.48-LB
f. 1/2” Ball Valve Mod.34-1/2
g. Pilot Valve Mod.CX/PS
Design Notes
Extended closure should be selected when using long
pipeline(s). The shut-off procedure of the pump will be
extended automatically to the time period needed for surge
prevention.
Refer to the head loss chart and select the smallest valve
that satisfies the allowed pressure loss at the duty point
of the pump.
The "BC/CD" Valve cannot prevent water hammer in case
of a power failure. A surge-anticipating valve "RE" should
be used if such an occurrence is expected.
(Insert value)
• The valve will be controlled by an electric solenoid valve
(electric data). It will be equipped with a position
indicator, a limit switch, and an opening/closing speed
adjustment device.
• The valve will open simultaneously with the pump and will
be in the "fully open" position through normal pump operation,
creating a maximum pressure loss of (value).
• On termination of the electric signal, the valve will close, at
a controlled pace, automatically adjusted by a pilot valve.
• When the valve is completely closed, it will initiate motor
shut-off.
• The valve will instantly close when the downstream pressure
exceeds the upstream pressure, regardless of the electric
control mode.
• The main valve will be a hydraulically operated, diaphragm
actuated, doubled chambered, Globe Type.
• The main valve will consist of a removable SST seat and a
resilient Rubber seal fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control
chamber below the diaphragm.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• The valve will be equipped with a position-indicating rod.
• Face-to-face length dimension meets ISO 5752 (S-1) Standard.
• Flange standard will be to (network standard).
The control system will consist of:
- Solenoid Valve with Manual Override
- Closure Control Pilot Valve
- Needle Valves
- Check Valves
- Self-Flushing, Removable, Internal Filter.
The valve shall be DOROT mod. 30[D] (31[D]) - (size) - BC/CD
or equal in all aspects.
Refer to RE p. 6F-1 for further information.
A simple electric circuit should be added to the pump
control panel to facilitate the interlink with the "BC/CD"
Valve.
Operating Data Checklist
(Please fill out and send to the distributor when ordering)
Maximum Flow Rate:
Optional Features
Operating Pressure:
Pressure Sustaining (add code "PS").
Static Pressure:
Flow Rate Control (add code "FR").
Main Pipeline Length:
See p. 3A-1 for further information.
See p. 4A-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Size
Connection
Model
30[D], 30A[D] (Inch): 11/2”- 20” Standard
31[D], 31A[D]
ISO, ANSI,
JIS etc.
6D-2
2002
Composite
30[D]
6
ISO PN16
Additional
Features
Control
Function
BC/CD
/
Flow Rate Control
Special
Instructions
FR
Bronze Body
Pg. 6E-1 4/3/02 15:08 Page 1
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®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
BC/FR
PUMP CONTROL/FLOW RATE
LIMITED VALVE
DOROT model “BC/FR” is an automatic, solenoid controlled
valve, activated by the pressure of the pipeline.
The valve is installed on the pump discharge.
On start-up of the pump, the valve opens at a slow adjustable
pace, until the system flow rate rises to the preset maximum
value.
The maximum rate of flow is set by a pilot valve, activated
by the pressure differential created on an orifice plate,
assembled in the main valve inlet flange.
Prior to pump shut-off, the valve slowly closes. This prevents
pressure surges that may be caused by a rapid change in
velocity.
A limit switch, assembled on the main valve bonnet, is
connected to the pump control panel and switches off the
motor when the valve has completed closing.
In case of a power or pump failure, the valve instantly closes,
performing as a fast-reacting check valve.
The main valve is "normally closed" (N.C.). An electric signal
opens the valve.
The standard electric current of the solenoid is 24VAC, 50Hz.
Various coils, suitable to other electric currents, are supplied on request.
The main valve is supplied in two models:
Model 30D for medium pressure (up to 16 bar / 230 psi)
Model 31D for high pressure (up to 25 bar / 350 psi).
30D-6-BC/FR
For further information see p. G5; and graph #1 on page G5-b.
For pilot data refer to p.G6- a.
For solenoid data refer to p.G6- f.
Typical Application:
The "BC/FR" Valves, assembled on the discharge of the vertical pumps, equalize the flow of the pumps regardless of
the varying water levels in each pump.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6E-1
2002
Pg. 6E-2 5/3/02 9:15 Page 1
C
Schematic Control Diagram
M
Y
CM
MY
CY CMY
K
Purchase Specifications
(Insert value)
• The valve will be controlled by an electric solenoid valve
(electric data). It will be equipped with a position
indicator, a limit switch, and an opening/closing speed
adjustment device.
• The valve will open simultaneously with the pump and may
be in the "fully open" position through normal pump operation,
creating a maximum pressure loss of (value).
• The valve will limit the flow rate to (value), adjustable by
a differential pilot valve.
• The valve will instantly close when the downstream pressure
exceeds the upstream pressure, regardless of the electric
control mode.
• The main valve will be a hydraulically operated, diaphragm
actuated, double chambered, Globe Type.
• The main valve will consist of a removable SST seat and a
resilient Rubber seal, fully supported by a seal disc.
• A removable separation disc will separate the diaphragm
assembly from the controlled liquid, creating a control chamber
below the diaphragm.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• The valve will be equipped with a position-indicating rod.
• Face-to-face length dimension meets ISO 5752 (S-1) Standard.
• Flange standard will be to (network standard).
b
e
g
f
a
c
c
c
f
f
d
d
h
a. N.O. 24VAC Solenoid Mod. 30-NO
b. 1/4” Needle Valve Mod.34-1/4-NE
c. 1/2” Check Valve Mod.21-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
e. Limit Switch Mod.40-LS + Bracket Mod.48-LB
f. 1/2” Ball Valve Mod.34-1/2
g. Differential Pilot Mod.76-600
h. Orifice Plate
The control system will consist of:
- Solenoid Valve with Manual Override
- Pressure Differential Pilot Valve
- Needle Valves
- Check Valves
- Self-Flushing, Removable, Internal Filter.
Design Notes
Flow rate limitation should be selected when the network
demand may exceed the designed pump duty point.
Refer to the head loss chart (in this section) and select the
smallest valve that satisfies the allowed pressure loss at
the duty point of the pump.
The valve shall be DOROT mod. 30[D] (31[D]) - (size) - BC/FR
or equal in all aspects.
The "BC/FR" Valve cannot prevent water hammer in case
of power failure. A surge-anticipating valve "RE" should be
used if such an occurrence is expected.
Operating Data Checklist
(Please fill out and send to the distributor when ordering)
Refer to RE p. 6F-1.
A simple electric circuit should be added to the pump
control panel, to facilitate the interlink with the "BC" Valve.
Pump Duty Point
Pressure:
Flow Rate:
Allowed Flow Rate:
Electric Control Current:
Optional Features
Extended Closure (add code "CD").
See p. 6D-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
30[D], 30A[D] (Inch): 11/2”- 20”
31[D], 31A[D]
6E-2
2002
Composite
30[D]
6
Connection
Standard
ISO, ANSI,
JIS etc.
Control
Function
ISO PN16
BC/FR
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Bronze Body
Pg. 6F-1 4/3/02 15:02 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
RE
SURGE ANTICIPATING VALVE
DOROT model “RE” is an automatic, pilot controlled valve,
activated by the pressure of the pipeline.
The valve is installed on a T-junction, on the discharge of a
pump, downstream of the check valve.
The "RE" Valve instantly opens when the pipeline pressure
drops below the static pressure.
The return flow is released through the open valve and the
pressure increase is limited to a safe value.
When the pressure recovers, the valve begins gradually
closing, preventing mainline drainage.
Closure time is adjustable in order to avoid a possible surge,
created by valve closure.
Should the pressure exceed the safe operating pressure of
the network, the valve instantly opens (Quick Relief Function
"QR").
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
30-6-RE
For further information see p. G5; and graph #3 on page G5-c.
For pilot data refer to p. G6-c and G6-d.
Typical Application:
"RE"
Valve
"BC" Valve
(Optional)
The "RE" Valve, installed on a T-junction downstream of the pump control or check valves, protects the network and
the pump from dangerous pressure surges caused by a power failure.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6F-1
2002
Pg. 6F-2 5/3/02 9:18 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
b
• The valve will fully open within 1 second of the main pressure
dropping below (static pressure).
a
e
• The valve will fully open within 1 second of the main pressure
exceeding (pump duty point).
c
d
• When normal pressure resumes, the valve will close at an
adjustable pace.
c
c
d
• The main valve will be a hydraulically operated, diaphragm
actuated, Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device connected to the seal disc and moving
freely inside the seat.
c
e
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
a. Quick-Acting Pilot Mod.66-300
• No external packing gland and piston activation is permitted.
(high pressure opening)
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
b. Quick-Acting Pilot Mod.66-300
• Flange standard will be to (network standard).
(low pressure opening)
The control system will consist of:
- Fast-Acting Relief Pilot Valves
- Needle Valves
- Self-Flushing, Removable, Internal Filter.
c. 1/2” Ball Valve Mod.34-1/2
d. 1/4” Needle Valve Mod.34-1/4-NE
e. Pressure Gauge
The valve shall be DOROT mod. 30 (31) - (size) - RE or equal
in all aspects.
f. 1/2” Self-Flushing Filter Mod.81-1/2-2
Operating Data Checklist
Design Notes
(Please fill out and send to the distributor when ordering)
The valve should be sized to release the return flow, at a
pipe pressure equal to the static pressure of the network.
A surge analysis is recommended for accurate size selection.
Pump Duty Point
The relief valve may operate at a high pressure differential.
Flow velocity is extremely high so the diameter of the
draining pipe should be larger than the valve diameter.
Pressure:
Flow Rate:
Static Pressure:
Optional Features
Material of Main Pipe:
Surge-Preventing Closure (add code "SP").
Length of Main Pipe:
See p.7C-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
6F-2
2002
Composite
Model
30, 30A
31, 31A
Size
(Inch): 11/2”- 20”
30
6
Connection
Standard
ISO, ANSI,
JIS etc.
Control
Function
ISO PN16
RE
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 6F-1 4/3/02 15:02 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
RE
SURGE ANTICIPATING VALVE
DOROT model “RE” is an automatic, pilot controlled valve,
activated by the pressure of the pipeline.
The valve is installed on a T-junction, on the discharge of a
pump, downstream of the check valve.
The "RE" Valve instantly opens when the pipeline pressure
drops below the static pressure.
The return flow is released through the open valve and the
pressure increase is limited to a safe value.
When the pressure recovers, the valve begins gradually
closing, preventing mainline drainage.
Closure time is adjustable in order to avoid a possible surge,
created by valve closure.
Should the pressure exceed the safe operating pressure of
the network, the valve instantly opens (Quick Relief Function
"QR").
The main valve is supplied in two models:
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
30-6-RE
For further information see p. G5; and graph #3 on page G5-c.
For pilot data refer to p. G6-c and G6-d.
Typical Application:
"RE"
Valve
"BC" Valve
(Optional)
The "RE" Valve, installed on a T-junction downstream of the pump control or check valves, protects the network and
the pump from dangerous pressure surges caused by a power failure.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6F-1
2002
Pg. 6G-2 4/3/02 15:16 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
a
• The valve will be controlled by a 12VDC electric solenoid
valve.
• The valve will be "normally closed" and will open on command
by way of an electric signal from an electric battery. The
valve should be in the "fully open" position within 1 second
after the electric signal is sent.
• On termination of the electric signal, the valve will slowly
close, at an adjustable pace.
• The valve will fully open within 1 second after the main
pressure exceeds (value).
• The main valve will be a hydraulically operated, diaphragm
actuated, Globe Type.
• The main valve will consist of a removable SST seat and
resilient Rubber seal fully supported by a seal disc.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
c
e
b
d
c
f
a. Quick-Acting Pilot Mod.66-300
(high pressure opening)
b. 12VDC, N.O. Solenoid Mod.30-NO
c. 1/2” Ball Valve Mod.34-1/2
d. 1/4” Needle Valve Mod.34-1/4-NE
The control system will consist of:
- Solenoid Valve with Manual Override.
- Fast-Acting Relief Pilot Valve.
- Needle Valves
- Check Valves
- Self-Flushing, Removable, Internal Filter.
e. 1/2” Check Valve Mod.21-1/2
f. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
The valve shall be DOROT mod. 30 (31) - (size) - RE/EL or
equal in all aspects.
The valve should be sized to release the return flow rate
while the pipe pressure equals the static pressure of the
network.
A surge analysis is recommended for accurate size selection.
Operating Data Checklist
The relief valve may operate in high pressure differentials.
(Please fill out and send to the distributor when ordering)
The flow velocity is extremely high so the diameter of the
draining pipe should be larger than the valve diameter.
The activation of the valve and timer is initiated by the loss
of main power.
Optional Features
Pump Duty Point
Pressure:
Flow Rate:
Static Pressure:
Material of Main Pipe:
Length of Main Pipe:
Surge-Preventing Closure (add code "SP").
Refer to p. 7C-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
30, 30A
31, 31A
6G-2
2002
Composite
30
Size
Connection
(Inch): 11/2”- 20” Standard
ISO, ANSI,
JIS etc.
6
ISO PN16
Control
Function
RE/EL
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 6H-1 4/3/02 15:21 Page 1
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NS
®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
NON-SLAM CHECK VALVE
The Problem
- Stoppage of a pump, or pumping station, in a high- rise
building generates a low pressure wave and, consequently,
a returning flow that closes the check valve of the pump
in accelerated speed.
- The closure of the check valve under the pressure of the
rushing water mass generates, very frequently, a tremendous
slam of the valve flap to its seat. This mechanical hammer
may damage the pump casing, its concrete base, accessories
etc. and is disturbing the tenants of the building by the
noise it generates.
DOROT'S Solution
- The NS valve is located at the pump discharge (or on the
common manifold of the pumps outlet), and is fullyopened through normal operation of the pump.
- When the pump stops, and flow rate drops to
nil, the valve starts closing. But unlike a standard hydraulic
check valve that closes slowly from full- opening to fullclosure, the NS valve closes fast (within 2-4seconds,
depending on it`s size) to approximately 20% of its fullopening stroke (“Fast closure period”). By this time the
returning flow is reduced to a negligible value.
- Then, the closure pace of the NS valve is decreasing
to a slower, adjustable speed (“Slow closure period”).
This restricted movement of the valve trim generates a
non-slam seating.
- The described procedure does not require any
electrical command and interlink between the valve and
the pump as the device is activated automatically by the
hydraulic parameters of the system.
30-6-NS
Swing check Valve
“NS” check Valve
Pressure in the pump site
Pressure in the pump site
165
165
120
120
Mts.
Mts.
80
80
35
35
.00
5.36
Seconds.
®
AUTOMATIC CONTROL VALVES
Composite
9.38
.00
5.36
9.38
Seconds.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
6H-1
2002
Pg. 6H-2 5/3/02 9:25 Page 1
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Schematic Control Diagram
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Valve Description
3” - 485 mm
4” - 520 mm
6” - 660 mm
8” - 795 mm
10” - 930 mm
• Model 30 (PN16) or 31 (PN25), single chamber, diaphragmactuated, disc sealing hydraulic valve.
• An Integral Position Control, assembled externally
to the Guiding cover, connected by a flexible tube to the
downstream control bore.
• No pilot valve or solenoid is used. The “two- stages closure”
is facilitated by position control alone. The valve system
is, therefore, extremely simple. No routine maintenance
is required.
• The valve can be assembled horizontally or vertically.
Typical Assembly
Roof
Tank
Isolating
valve
NS valve
Available sizes:
Model
Diameter
30-3-NS
30-4-NS
30-6-NS
30-8-NS
30-10-NS
80mm
100mm
150mm
200mm
250mm
Recommended max. flow*
Pump
36m3/n
56m3/n
130m3/n
225m3/n
350m3/n
Basement
Tank
* Based on pipeline velocity of 2m/s
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
30, 30A (Inch): 3”- 10”
31, 31A
30
6H-2
2002
Composite
6
Connection
Standard
ISO, ANSI,
JIS etc.
Control
Function
ISO PN16
NS
Additional
Features
Electric On-Off Control
/
Special
Instructions
Bronze Body
Pg. 7A-1 5/3/02 9:32 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
DI
PRESSURE DIFFERENTIAL
SUSTAINING VALVE
DOROT model “DI” is an automatic, pilot controlled, pressure
differential sustaining valve, activated by the pressure of the
pipeline.
The valve is assembled in the pipeline and modulates to
maintain a steady, predetermined pressure difference between
two points in the network.
Should the high pressure side increase, or low pressure side
decrease, the valve opens, thus reducing the differential.
In case the pressure differential falls below the required setpoint, the valve closes drip-tight.
The main valve is supplied in two models,
Model 30, 30A for medium pressure (up to 16 bar / 230 psi)
Model 31, 31A for high pressure (up to 25 bar / 350 psi).
For further information see p. G5; and graph #2 on page G5-b.
For pilot data refer to p. G6-b.
30-6-DI
Typical Application:
Heating or Cooling Unit
A heating or cooling system.
A booster pump (with varying suction pressure).
The “DI” Valve, sensing both sides of the pump, maintains
a preset dynamic head, hence a stabilized flow rate.
®
AUTOMATIC CONTROL VALVES
Composite
The “DI” Valve, installed as a bypass, provides a uniform
pressure differential to the heat exchangers, regardless
of the number of active units.
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
7A-1
2002
p. 7A-2 4/3/02 15:49 Page 1
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Schematic Control Diagram
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Purchase Specifications
(Insert value)
• The valve will maintain a constant pressure difference of
minimum (value) between the upstream and downstream.
a
• The valve will fully open when the pressure differential
exceeds the preset point and the valve will close drip-tight
when the differential falls below the set-point.
• The valve will be a hydraulically operated, diaphragm actuated,
Globe Type.
• The main valve will consist of a removable SST seat and a
resilient Rubber seal, fully supported by a seal disc.
b
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom, by a Bronze
centering device, connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
c
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way which
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
c
d
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flange standard will be to (network standard).
The control system will consist of:
- 3-Way Differential Pilot Valve
- Self-Flushing, Removable, Internal Filter
- Manual Closure Valve
a. Differential Pilot Mod.76-200
b. Manual Selector Valve Mod.SY3
The valve shall be DOROT mod. 30 (31) - (size) - DI or equal
in all aspects.
c. 1/2” Ball Valve Mod.34-1/2
d. 1/2” Self-Flushing Filter Mod.81-1/2-2
Design Notes
Operating Data Checklist
(Please fill out and send to the distributor when ordering)
Regulating valves may operate in destructive cavitation
conditions.
Refer to p.G6 for further information.
Maximum Flow Rate:
Maximum Upstream Pressure:
Required Differential Pressure:
Optional Features
Electric On-Off Control (add code "EL").
When ordering, specify "normally open" (N.O) or "normally closed" (N.C).
See p.1A-1 for further information.
Hydraulic Check Valve Function (add code "CV").
See p.1B-1 for further information.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
7A-2
2002
Composite
30
6
ISO PN16
Control
Function
DI
Additional
Features
Electric On-Off Control
/
EL (N.O.)
Special
Instructions
Position Indicator
Pg. 7B-1 5/3/02 9:39 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
EC
ELECTRONIC CONTROLLED VALVE
DOROT model “EC” is an automatic valve, controlled by the
versatile “ConDor” Electronic Controller.
The electronic control is selected for:
• Very sensitive and accurate regulation
• A combination of various control functions
• The frequent automatic modification of the controlled value
• The remote control of a controlled value
The control function (or combination of control functions)
is initially programmed in the "ConDor" Controller, so that the
operator can enter his operation parameter values (“setpoints”), using plain English screens.
The main valve is equipped with two solenoid valves. The
solenoids insert upstream pressure to the valve control
chamber or drain it to the valve downstream, thus opening
or closing the valve. External control media, such as compressed
air, can be used if necessary.
The "ConDor" Controller sends pulses (12VDC Current) to
one solenoid to initiate the “open” command, and to the
other to initiate the “close” command.
Manual activation of the solenoid valves is possible, allowing
automatic control override.
30-6-EC
Typical Application:
Remote Control Sensor
ConDor
A mixing
junction
supplied by
two different
sources.
Examples of Control Applications
• A pressure reducing valve, providing high downstream
pressure in high demand hours and lower pressure at low
demand hours. A unique combination of hour/pressure is
set for weekdays. The pressure is modified manually by
remote control from a central control point.
• A metering valve, supplying a specific quantity of liquid at
a specific flow rate. It will start the flow at a preset time
and /or day in the week
The "EC" Valves, controlled by the "ConDor" Controller, maintain the required
mixing ratio, regardless of varying demand. (The mixing ratio can be modified
by remote control).
Remote Control
Flow Rate Sensor
ConDor
Pressure Sensor
• A tank level control valve is assembled on the inlet pipe.
The flow rate is adjusted automatically according to water
level, increasing the flow when the level is low, and reducing
it when water level in the receiving tank is high.
• The mixing of fresh water and brackish water at a preset
ratio, regardless of flow rate or pressure fluctuations. (Two
valves are controlled simultaneously by the controller).
• Surge preventing opening and closing, using a sophisticated
procedure, which automatically adjusts the opening or
closing time, adhering to network characteristics.
The "EC" Valve, controlled by the "ConDor" Controller, automatically adjusts
the outlet pressure, in response to flow rate change.
®
AUTOMATIC CONTROL VALVES
Composite
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
7B-1
2002
Pg. 7B-2 5/3/02 9:50 Page 1
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Schematic Control Diagram
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Design Considerations:
Suitable analog or digital sensors (pressure, flow, or any other
parameter) should be provided.
Remote Analog
Control
Analog Output
External Control
Media
(Optional)
M
a
ConDor
Electricity Supply
d
Sensors
(analog+digital)
Power supply from the general mains or solar panel is necessary.
Purchase Specifications
a
(Insert values)
• The valve will control (define control functions).
• The activation of the valve will be done by an electronic
controller operating on real time basis, allowing programming
by an untrained operator.
b
b
c
• Two solenoid valves, assembled on the main valve, will
activate the main valve following the electric signals of the
controller.
• The main valve will be a hydraulically operated, diaphragm
actuated, Globe Type.
a. 12VDC, 2/2 N.C. Solenoid
b. 1/2” Ball Valve Mod.34-1/2
• The main valve will consist of a removable SST seat, and
resilient Rubber seal, fully supported by a seal disc.
c. 1/2” Self-Flushing Inline Filter
d. ConDor Electronic Controller
Main Features Of The "ConDor" Controller:
• Programming any control application(s), listed in the
DOROT Design Manual.
• Modification of the set-point by analog remote control
input.
• Start/stop of valve operation by way of an external signal.
• Automatic modification of set-points for different hours
in the day and/or days in the week.
• Automatic modification of a set-point, following the
fluctuation of another parameter.
• “Real time” control (the value of the controlled parameter
is measured every 0.25 second).
In case this value does not match the set-point (within
a tolerant range, defined by the user) the controller sends
correcting pulses to the relevant solenoid instantly.
• The stem will be guided at the top by a replaceable guide
bearing in the valve bonnet, and at the bottom by a Bronze
centering device connected to the seal disc and moving
freely inside the seat.
• No bottom guide bearing is permitted.
• The diaphragm will be fully supported, top and bottom, by
rigid discs and will be connected to the stem in a way that
enables fast and easy replacement on site.
• No external packing gland and piston activation is permitted.
• Face-to-face length dimension meets ISO 5752(S-1) Standard.
• Flanges standard will be to (network standard).
The control system will consist of:
- Solenoid Valves
- Self-Flushing, Removable, Internal Filter.
The valve shall be DOROT mod. 30 (31) - (size) - EC or
equal in all aspects.
• Adjustable pulse length and/or time intervals between
pulses, to match the response of the valve to the hydraulic
characteristics of the network.
• Remote reading of controlled parameter values, by way
of analog input.
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
Size
Connection
30, 30A (Inch): 11/2”- 20” Standard
31, 31A
ISO, ANSI,
[D]
JIS etc.
7B-2
2002
Composite
30
6
ISO PN16
Control
Function
EC
Additional
Features
Check Valve
/
CV
Special
Instructions
Position Indicator
Pg. 7C-1 5/3/02 9:55 Page 1
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A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
SP
SURGE-PREVENTING CLOSURE
The Problem
DOROT'S Solution
The closure of a valve at the downstream end of a long
pipeline generates a pressure surge, which may exceed the
safe operating pressure of the pipe.
When the pipe is long, or the normal flow velocity is high,
the closing time of the valve must be extended considerably
to avoid dangerous pressure waves, oscillating along the
pipe.
The standard closing restriction device, such as nozzles and
needle valves, may be insufficient when conditions are very
adverse.
The "SP" feature is added to the standard control circuit of
float valves, remote controlled electric valves, and other
automatic valve applications.
During valve closure, the valves senses upstream pressure.
When the pressure exceeds the static pressure at the valve
location, the "SP" Device instantly stops the closing process.
The closing procedure resumes when the pressure drops
to normal.
In case of excessive pressure, the device re-opens the valve,
operating as a quick-relief valve.
The above mentioned process generates the“closing stages”,
where the valve automatically adjusts its closure pace to
meet the hydraulic characteristics of the network.
Design Considerations
Choose the "SP" addition in case:
• The pipe is longer than 2000m
• The flow velocity is higher than 1.5m/s
• The pipe pressure rating is low.
It is advisable to run a surge analysis if your system meets the above conditions.
COMPARISON OF VALVE INLET PRESSURE
+50
D=2
50m
m
L=10
000m
+0
Example
A float-controlled valve, 250mm size, is mounted at the outlet of a 10Km long, 250mm steel pipeline.
The pipe fills a reservoir from a dam, 50m higher than the reservoir.
Normal closing time of the valve is 60 seconds.
Without "SP" Device
With"SP" Device
Pressure, following closure, in the inlet
of a standard "FL" Valve.
Pressure in the valve inlet after the "SP"
Device was added.
150
150
100
100
Pressure
(mwc)
Pressure
(mwc)
50
40
0
-10
0
-10
0
250
Seconds following valve closure
®
AUTOMATIC CONTROL VALVES
Composite
470
0
250
470
Seconds following valve closure
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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M
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CM
MY
CY CMY
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®
A u t o m a t i c H y d r a u l i c C o n t r o l Va l v e s
AUTOMATIC CONTROL VALVES
NO
NORMALLY OPEN
Standard Series 300, Single chamber valve, that is maintained
in “OPEN” position by an external spring. The valve will stay
in opened position unless controlled to “CLOSE” by an
external control system, activated manually or electrically.
All standard components, as listed in DOROT Design Manual,
are used- except:
• The Guiding cover (part #36) is replaced by a special N.O.
version.
• The Position Indicating Rod (part #34) is replaced by a
special N.O. rod
• Various components (see drawing below) are added to the
standard valve.
• The non-standard components can be purchased as a “kit”
that can be used to convert a standard valve to a “NormallyOpen” type.
• A special tool, enabling compression of the spring, is supplied
to customers who wish to assemble the N.O. kit on site.
Main Applications
• Control of low- head systems (such as Sewage networks).
• Draining of tanks.
• Replacement of Double- Chabmer control in most of its
applications.
30-6-NO
Special
Indicator Rod
Spring
Cover
Top
Spring Disk
Safety
Ring
Spring
Housing
Spring
Standard
Adaptor
Bottom
Spring Disk
Special
Guiding
cover
®
AUTOMATIC CONTROL VALVES
Composite
Standard
Shaft
Standard
Bonnet
KIBBUTZ DOROT Mobile Post HOF ASHKELON 79175 ISRAEL.
Export Dept.: Tel. 972-8-6808848 Fax. 972-8-6808751 E-mail: dorotexp@netvision.net.il Web-site: http://www.dorot.com
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Schematic Control Diagram
M
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CM
MY
CY CMY
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Height Dimensions
Height
Height dimension, fully-open valve
Valve model
and size
Inch
MM
30-11/2-NO
131/2
343
30-2-NO
131/2
343
30-3-NO
205/8
525
30-4-NO
215/8
551
30-6-NO
265/8
678
30-8-NO
305/8
779
30-10-NO
30
981
30A-11/2-NO
131/8
335
30A-2-NO
141/8
359
30A-3-NO
223/8
568
30A-4-NO
231/4
591
30A-6-NO
291/2
750
* A = Angle pattern
Technical data:
Maximal operating pressure:
Model 30- PN16 (230psi), Model 31- PN25 (360psi)
Minimal operating pressure:
Zero
Minimal closure pressure:
5m (8psi) in excess of pipeline pressure
Please specify the requested valve in the following
sequence (see example below):
How To Order
Model
30, 30A
31, 31A
7D-2
2002
Composite
30
Size
Connection
(Inch): 11/2”- 10” Standard
ISO, ANSI,
JIS etc.
6
ISO PN16
Control
Function
NO
Additional
Features
Electric control
/
EL
Special
Instructions