Dorot Pilot Controlled Valves (Series 100)

Dorot Pilot Controlled Valves (Series 100)
Series 100 Valves
Quality
ISO 9001
AVFI Pty Ltd
54 Enterprise Drive
Bundoora Vic 3083
p: 03 8467 0000
f: 03 8467 0099
e: avfi@avfi.com.au
w: www.avfi.com.au
Series 100 Valves
Contents
Dorot Series 100 – General
4
Technical Data
Available Models
6
Design Specifications
6
Diaphragm Selection Table
7
Dimensions and Weights
8
Main Components
10
Control Functions
2
M
Manually Controlled Valve
12
EL
Solenoid Controlled Valve
13
RC
Hydraulic Remote Controlled Valve
14
PR
Pressure Reducing Valve
15
PS
Pressure Sustaining & Relief Valve
16
DI
Pressure Differential Sustaining Valve
17
FR
Flow Control Valve
18
FE
Excessive Flow Shut-off Valve
19
Quality
ISO 9001
Series 100 Valves
Contents
FL
Modulating Float Controlled Valve
20
FLEL Electric Float Controlled Valve
21
FLDI Differential Float Controlled Valve
22
AL
Altitude Pilot Controlled Valve
23
BC
Booster Pump Control Valve
24
DW
Deep Well (Borehole) Pump Control Valve
25
RE
Surge Anticipating Valve
26
QR
Quick Pressure-relief Valve
27
TO
Two Stage Opening Addition
28
SP
Surge Preventing Stepped-Closure Addition
29
EC
PLC Controlled Valve
30
DE
Deluge Dry-pipe and Pre-action Valves
31
Pilots and Accessories
32
Other Dorot Products
34
Typical Applications
35
Quality
ISO 9001
3
Series 100 Valves
General
Dorot Series 100
The direct sealing diaphragm valves were introduced to the
world market for the first time by DOROT CONTROL VALVES
at 1982. This valve is operated by the pressure of the pipeline
and is used for various control applications in water supply, fire
fighting, industrial, sewage and irrigation systems.
The only moving component is a reinforced diaphragm, which:
a. Drip tight seals the liquid passage in the closed valve
b. Allows free passage in the fully open valve with minimal
obstruction to the flow line
c. Throttles the flow passage in the modulating valve, as dictated
by the pressure in the control chamber
The valve can be closed or modulated using the line pressure or
an external separate pressure source that is equal or higher
than the line pressure.
Dorot S-100 valves are made for easy, inline maintenance,
executed also by unskilled personal using basic tools.
There are no shafts, bearings or seals that may corrode and
there is no wear and tear by dirty abrasive water or chemicals.
Features and benefits
•
•
•
•
•
•
4
Structural simplicity
Superb design featuring exceptionally low pressure losses at
high flow rates
Can be used for regulating from no-flow to maximal flow with
no need for additional throttling devices or by-pass valves
For natural liquids, sea water and industrial effluents
A wide selection of materials, coating and diaphragm types
All valve models fit a wide variety of control applications using
Dorot pilot valves
Quality
ISO 9001
Series 100 Valves
General
Principle of operation
3-way control system
The main valve is controlled by a manually, electrically or pressure actuated selector that:
1 Introduces the upstream pressure or an external pressure source to the valve’s control chamber, thus pressing the valve diaphragm
from top to a closed position.
2 Openes the valve by relieving the pressure from the control chamber and enabling the internal pressure in the line to push the valve
diaphragm up and creating an unrestricted, full flow passage.
3 Shutes all passages to and from the control chamber, thus keeping the main valve in a fixed position. This position does not exist in
devices used for ON/OFF control applications but is necessary in modulating valves.
1
2
3
2-way control system
A control system that consist of two restrictions:
a. A fixed restriction at the upstream side of the control system (nozzle or needle valve)
b. ON/OFF device (valve, relay or solenoid) or a modulating pilot valve with a larger passage than restriction ‘a’ that is installed at the
downstream side of the control system. The main valve position is affected by the downstream pilot valve ‘b’ in the following ways:
1 When the pilot valve is closed, no water can be vented to the downstream and the main valve is closed by the upstream pressure,
introduced into the valve control chamber through the restriction ‘a’.
2 Opening the valve is enabled when the pilot ‘b’ is fully open and allows the drainage of pressure in the control chamber to the down
stream. At this position the pressure in the control chamber nearly equals that of the downstream.
3 Throttling pilot valve ‘b’ so the flow running through it equals the flow entering through the restriction ‘a’, keeps a fixed volume of
water in the control chamber and the main valve in a fixed position.
b
b
Needle a
Needle
valve a
valve
1
Pilot
Pilot
valve
valve
Pilot
Pilot
b valve
valve
b
Needle a
Needle
valve a
valve
2
b
b
Needle a
Needle
valve a
valve
Pilot
Pilot
valve
valve
3
Quality
ISO 9001
5
Series 100 Valves
Technical Data
Available Models
Pattern
45
53
Threaded Victaulic®
Bronze
Cast Iron
Materials
Standard
Optional *
Connections
Standard
Optional *
Body and Bonnet
Cast Iron, Ductile Iron,
Bronze
Cast Steel,
Stainless Steel
Flanges
ISO 2084, 2441, 5752
Diaphragm
Natural Rubber
NBR ,EPDM ,Neoprene
ANSI B16
JIS B22
AS 10
Spring
SST 302
SST 316
Nuts And Bolts
Coated Steel
SST
Threads
F-BSP
F-NPT
Coating
Polyester
Epoxy, Nylon, Rubber
Control Bores
1/8”,1/4”,1/2” NPT
Available Sizes
Type
44
Connection Threaded
Material
Cast Iron
Max. Pressure
mm inch
20 3/4
●
25 1
●
40 11/2
●
50 2
●
65 21/2
●
80 323
●
80 3
●
100 4
150 6
200 868
200 8
250 10
300 12
350 14
400 16
450 18
500 20
600 24
●
●
●
●
●
●
●
●
●
●
●
●
●
47
Flanged
Cast Iron
87
77
82
Flanged
Flanged
Flanged
Bronze Ductile Iron Cast Iron
16bar / 230psi
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
84
53A
91
67
94
Threaded Victaulic® Threaded Flanged Threaded
Cast Iron Cast Iron
Bronze Ductile Iron Ductile Iron
25bar / 360psi
●
●
●
●
●
●
●
●
●
●
●
●
Quality
ISO 9001
●
●
●
●
●
●
●
Non Standard Bonnets
6
●
●
●
* Others Upon Request
Throttling Bonnet
●
Position Indicating Bonnet
Series 100 Valves
Technical Data
Diaphragm Selection Table*
Diameter
mm
inch
20, 25
3
/4”, 1”
40
11/2”
50, 65
2”, 21/2”, 323
50HP
2”HP
80, 100
3”, 4”
80HP
100HP
3”HP
4”HP
150
6”, 868
150HP
6”HP
200, 300, 350
8”, 12”, 14”
200HP
8”HP
250
10”
250HP, 400HP,
500HP, 600HP
10”HP, 16”HP,
20”HP, 24”HP
Type
No.
Standard
Low Pressure
Standard
S. Low Pressure
Standard
Low Pressure
S. Low Pressure
Extreme
High Pressure
Standard
Low Pressure
Extreme
High Pressure
High Pressure
Standard
Low Pressure
S. Low Pressure
High Pressure
Standard
Low Pressure
Extreme
High Pressure
Standard
Low Pressure
High Pressure
Low Pressure
18
85
13
82
03
02
12
60
69
32
05
61
70
71
62
09
91
72
36
37
63
73
40
50
78
92
Pressure Range
mwc
12-160
5-100
12-160
5-50
15-160
7-100
4-50
20-160
10-250
12-160
4-100
20-160
10-250
10-250
20-160
5-100
2-60
10-250
7-160
2-100
20-160
10-250
7-160
2-100
10-250
2-100
psi
17-230
7-140
17-230
7-70
21-230
10-140
6-70
28-230
15-360
17-230
6-140
28-230
15-360
15-360
28-230
7-140
3-85
15-360
10-230
3-140
28-230
15-360
10-230
3-140
15-360
3-140
* Standard Diaphragm: Nylon Reinforced Natural Rubber. Optional Materials: Nitrile, EPDM, Neoprene Available Upon Request.
** HP = High Pressure
Pressure Rating
Pressure rating of series 100 valves is body strength, connection standard and diaphragm type.
Pressure rating of valve body of standard models: 16 Bar / 230 psi.
Pressure rating of valve body of high pressure models: 25 Bar / 360 psi.
Connection standard is marked on the identification plate, assembled on the valve body.
Diaphragms operation pressure range is presented at the above table.
Quality
ISO 9001
7
Series 100 Valves
Technical Data
Dimensions and Weights
L
Straight Flow, Threaded Connection
mm
115
120
170
188
219
225
316
mm
112
119
149
184
212
221
316
Cast Iron
inch
413/32
411/16
555/64
715/64
811/32
811/32
1213/64
mm
43
52
93
115
118
126
135
Bronze
inch
111/16
23/64
321/32
417/32
441/64
461/64
55/16
mm
43
52
86
101
109
116
135
inch
111/16
23/64
3 3 /8
331/32
49/32
49/16
55/16
mm
20
24
33
42
46
54
53
inch
25
/32
15
/16
119/64
141/64
113/16
2 1/ 8
25/64
mm
68
68
93
112
112
112
200
Cast Iron
inch
243/64
243/64
321/32
413/32
413/32
413/32
7 7 /8
kg
1
1
2.2
3.2
3.6
4.5
11
lbs
2.2
2.2
4.9
7
7.9
9.9
24
H H
Bronze
inch
417/32
423/32
611/16
713/32
8 5/ 8
8 55/64
1213/64
Weight w
W
D D
Cast Iron
inch
3
/4
1
1 1 /2
2
21/2
32/3
3
L
D
w
H
mm
20
25
40
50
65
80LF*
80
H
D
L
Valve Size
w
L
Bronze
kg
1
1
1.8
2.6
3.4
3.9
lbs
2.2
2.2
4
5.7
7.5
8.5
* LF = Low Flow
w
D
H
L
Straight Flow, Grooved Connection (Vic.)
D
inch
33/16
315/16
423/32
4 7 /8
515/64
927/32
mm
26
33
47
47
60
82
W
inch
11/64
119/64
127/64
127/64
223/64
37/32
mm
93
112
112
200
194
300
inch
321/32
413/32
413/32
7 7/8
741/64
1113/16
Weight
kg
lbs
1.8
4
2.6
5.7
3
6.6
11
24.3
12
26.4
31
68.3
L
w
L
w
L
w
H H
mm
81
100
120
124
133
250
D D
H
inch
631/32
731/64
729/32
111/4
1215/32
1527/64
H
L
mm
177
190
201
286
317
392
D
Valve Size
mm
inch
40
11/2
50
2
80
323
80LF
3
100
4
150
6
Angle Flow, Grooved Connection (Vic.)
D
W
inch
611/16
79/32
L
Angle Flow, Threaded Connection
mm
110
136
165
239
inch
421/64
511/32
6 1/ 2
913/32
H
H
D
Valve Size
mm
inch
40
1 1/2
50
2
80LF
323
80
3
mm
200
200
Weight
kg
lbs
10.5
23.1
11.5
25.4
w
w
D
mm
75
90
114
145
inch
7 7/ 8
7 7/ 8
W
inch
261/64
335/64
431/64
545/64
mm
93
112
112
200
w
Weight
inch
321/32
413/32
413/32
7 7/ 8
kg
1.7
2.4
3.6
10.8
lbs
3.7
5.3
7.9
23.8
w
H H
mm
170
185
D D
inch
97/16
927/32
H
H
mm
240
250
D
Valve Size
mm
inch
80
3
100
4
Angle Flow, Flanged Connection
mm
174
185
230
D
8
H
w
Quality
ISO 9001
inch
827/32
79/32
93/64
mm
200
230
300
w
Weight
inch
7 7/ 8
93/64
1113/16
kg
18
21
45
lbs
39.7
46.3
99.2
w
H H
inch
915/16
1113/16
1461/64
W
D D
mm
278
300
380
w
D
H
H
D
Valve Size
mm
inch
80
3
100
4
150
6
Series 100 Valves
Technical Data
Dimensions and Weights
Straight Flow, Flanged Connection - Standard Models 16 Bar / 230 psi
Valve Size
mm
50
80LF
80
100
150
200LF
200
250
300
350
L
inch
2
323
3
4
6
868
8
10
12
14
mm
200
200
285
305
390
385
460
535
580
580
H
inch
7 7 /8
7 7 /8
117/32
12
1511/32
1511/32
187/64
211/16
2253/64
2253/64
mm
166
202
200
230
314
350
400
445
495
495
D
inch
617/32
761/64
7 7/ 8
93/64
1223/64
1325/32
153/4
1713/64
197/16
197/16
mm
85
105
105
110
145
170
170
205
240
270
Weight
W
inch
311/32
4 1/8
4 1/8
421/64
545/64
611/16
611/16
81/16
97/16
105/8
mm
166
200
200
230
300
365
365
440
490
540
Cast Iron
inch
617/32
7 7/8
7 7/8
93/64
1113/16
143/8
143/8
175/16
199/32
211/4
kg
7.2
11
17
22
46
50
80
117
156
182
Duct. Iron
lbs
15.8
24.3
37.5
48.5
101
110
176
258
344
401
kg
7.7
11.8
18.2
24
49
54
86
125
167
172
w
L
w
L
w
L
w
kg
8
lbs
17.6
19
24
51
42
53
112
89
131
147
180
196
289
324
397
H
D
D
D
H
H
H
L
D
Bronze
lbs
17
26
40.1
53
108
119
190
276
368
379
Straight Flow, Flanged Connection - High Pressure Models 25 Bar / 360 psi
Valve Size
mm
50
50TH
80
100
150
200
250
400
450
500
600
L
inch
2
2TH
3
4
6
8
10
16
18
20
24
mm
228
250
310
356
436
530
636
709
715
900
900
H
inch
831/32
927/32
1213/64
141/64
175/32
2055/64
251/32
2729/32
285/32
357/16
357/16
mm
169
120
237
263
378
481
546
830
830
970
970
D
inch
621/32
423/32
921/64
1011/32
147/8
1815/16
211/2
3243/64
3243/64
383/16
383/16
mm
85
42
105
120
150
180
215
310
340
490
490
W
inch
311/32
121/32
4 1/8
423/32
557/64
71/32
815/32
1213/64
1325/64
199/32
199/32
mm
175
175
200
260
320
400
495
830
830
980
980
Weight
inch
657/64
657/64
7 7/8
1015/64
1219/32
153/4
197/16
3243/64
3243/64
3837/64
3837/64
kg
10
6
30
38
75
123
190
433
460
674
696
lbs
22
13
66.1
83.8
165.3
271
419
955
1014
1486
1534
* TH = Threaded
w
L
w
L
w
L
w
H
H
H
D
D
D
D
H
L
Quality
ISO 9001
9
Series 100 Valves
Technical Data
Hydraulic Performance
mm
20
3
inch
/4
3
6
Max. Flow m /hr
Continuance gpm 26.4
3
Max. Flow m /hr 16
Intermittent gpm
72
m3/hr
Minimal Flow
gpm
Kv m3/hr @ 1 bar 17
Cv gpm @ 1 psi 20
Kv* m3/hr @ 1 bar
Cv* gpm @ 1 psi
Valve Size
25
1
10
44
27
120
40
11/2
25
110
68
300
50
2
40
176
109
480
65
21/2
40
176
109
480
80
323
40
176
109
480
80LF
3
90
396
245
1080
100
4
160
700
273
1200
17
20
-
64
75
-
95
110
78
91
95
110
-
95
110
-
170
200
120
140
220
260
200
230
150 200LF 200
250
300
6
868
8
10
12
350
350
620
970 1400
1540 1540 2730 4268 6160
955
955 1309 2645 3818
4200 4200 5760 11640 16800
<1
<5
600
670
800 1250 1900
700
780
930 1460 2220
550
800 1300
640
930 1520
-
* High pressure models
3
2
450
18
2500
11000
6818
30000
500
20
3890
17116
10609
46680
600
24
5500
24200
10609
46680
1900
2220
-
2600
3030
2600
3030
2600
3030
2600
3030
4600
5370
4600
5370
4600
5370
4600
5370
P (Psi)=
(
m3 2
Q[ hr ]
Kv
(
)
Q[gpm]
Cv
2
)
24”
20”,
10”
68
6”, 8
8”
3”
4”
12”,
14”
16”,
18”
323
1/2”,
”
1 1/2
2”, 2
1”
3/4”
psi mwc
10
9
8
10
7
9
8
6
7
5
6
4
5
3
400
16
2500
11000
6818
30000
P (Bar) =
Headloss Chart
4
350
14
1400
6160
3818
16800
2
0
10
10
100
1000
100
5000 m/hr
1000
10000
gpm
Cavitation Data
psi bar
25
Upstream Pressure
350
Cavitation zone
300 20
Safe zone for
Bronze valves
250
200
15
Safe operation
zone
150 10
100
5
50
0
0
1
10
20
2
30
3
40
4
50
5
60
70
Downstream Pressure
10
Quality
ISO 9001
6
80
90
7
100
110
8 bar
psi
Series 100 Valves
Technical Data
Main Components
Pilot valves for superb
regulation at high
reliability
Unique Design
Creating low
losses at high flow
rates
Internal SST spring:
allows the use of wide
range of diaphragm
rubber types
Flexible reinforoed
diaphragm-no
bearing, guides or
internal seals
used
Polymeric coating, UV
and corrosion resistant
Wide materials
variety
10
8
7
10
9
8
6
7
9
2
6
4
2
5
4
5
1
Components
9
9
8
8
10
Component No.
Description
1
Body
2
Bonnet
3
Diaphragm
4
Spring
5
Spring Disc
6
Bolt
7
Short Bolt
8
Washer
9
Nut
10
Suspension Ring (Hook)
6
6
9
8
6
5
5
4
4
5
2
2
4
1
31
2
8
7
9
6
2
4
1
5
3
1
3
3
9
8
6
9
9
8
6
8
5
6
4
5
4
5
2
4
1
2
33
1
2
1
1
33
3
33
3
Quality
ISO 9001
11
Series 100 Valves
Control Functions
M Manually Controlled Valve
4
5
3
2
1
Description
The valve is controlled manually by a three port selector
that allows the user to select the closed, opened or remotecontrolled position of the valve. The control is effected
effortlessly and quickly, even under high pressure
conditions
Features
•
•
•
•
Effortless open/close activation
Fast response
Clog-free operation
Can be added as manual over-ride to any other control
function
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
3-way selector valve
Accelerator relay (optional for valves larger than 150mm/6”)
* Optional component
Purchase Specifications
The valve will be a direct sealing diaphragm type, which
allows inline maintenance. No stem, shaft or guide bearing
will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure.
The valve position will be controlled by a hand operated
selector valve. The valve and the controls will be a Dorot
Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
12
The valve should be suited for the maximal flow and
allowed headloss
Preferred selection of low pressure diaphragms when
the valve is expected to stay in open position for long
periods
Quality
ISO 9001
Typical Application
Dorot Manually controlled valve installed in an underground,
flooded pit. Manual activation is enabled from top by the
selector valve.
Series 100 Valves
Control Functions
EL Solenoid Controlled Valve
4
5
3
2
Description
A 3-way solenoid valve, activated by an electric current or an
electric pulse, opens or closes the main valve.
The standard valve is supplied in the “normally closed”
position. The “normally open” position is optional.
Electric activation can be added to other control applications
on request.
Features
•
•
•
•
Low power electric activation
Fast response
Simple and reliable design
Can be added as electric over-ride to any other control
function
1
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
3/2 Solenoid valve
Accelerator relay (optional for valves larger than 150mm/6”)
* Optional component
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve position will
be controlled by an electric solenoid valve. The valve and
the controls will be a Dorot Series 100 valve or similar in all
aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
The valve should be suited for the maximal flow and
allowed headloss
Prefer selection low pressure diaphragms when the valve
is expected to stay in open position for long periods
The valve can be opened by the electric command (NC)
or closed by it (NO). The definition refers to the main valve
operation and not the solenoid’s characteristics
Typical Application
Dorot Solenoid Controlled valve, controlled by a local
controller.
Quality
ISO 9001
13
Series 100 Valves
Control Functions
RC Hydraulic Remote Controlled Valve
Remote pressure
command
4
5
3
2
1
Description
A 3-way relay valve, activated by hydraulic or pneumatic
pressure command, opens or closes the main valve. The
standard valve is supplied in the “normally closed” position.
The “normally open” position is optional. Hydraulic activation
can be added to other control applications on request.
Features
•
•
•
Fast response even for long control lines
Simple and reliable design
Can be added as pressure command over-ride to any
other control function
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
Accelerator relay (other types are optional)
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve position will be
controlled by a hydraulic relay. The valve and the controls
will be a Dorot Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
14
The valve should be suited for the maximal flow and
allowed headloss
Prefer selection low pressure diaphragms when the valve
is expected to stay in open position for long periods
The valve can be opened by the pressure command (NC)
or closed by it (NO). The definition refers to the main valve
operation and not the relay’s characteristics
Quality
ISO 9001
Typical Application
Dorot Hydraulic Remote Controlled Valve, activated by a
remote pressure command.
Series 100 Valves
Control Functions
PR Pressure Reducing Valve
5
4
3
2
Description
The valve maintains a preset downstream pressure,
regardless of upstream pressure or flow rate fluctuation.
The main valve is controlled by either a 3-way pilot valve
(allowing full opening when upstream pressure drops below
the pressure set-point), or by a 2-way pilot valve (creating a
minimal differential in open position).
Features
•
•
•
•
Accurate, stable control from no-flow to full flow
Simple and reliable design
Exceptionally low losses at high flow
WRAS Approval no. 04251
1
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
3-way pilot valve (other types are optional)
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve will
be operated by a pressure reducing pilot valve to achieve
constant outlet pressure, regardless of upstream pressure
or flow variations. The valve and the controls will be a Dorot
Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
The valve should be suited for the maximal flow and
allowed headloss
In case upstream pressure may drop to the required set
pressure, select 3-way control pilot
Large pressure differentials may cause cavitation
damage. Consult Dorot for solutions if such conditions
are expected
Typical Application
Dorot Pressure Reducing Valve reduces varying supply
pressure to a stabilized downstream pressure.
Quality
ISO 9001
15
Series 100 Valves
Control Functions
PS Pressure Sustaining & Relief Valve
5
4
3
2
1
Description
The valve maintains upstream pressure, regardless of flow
rate variations. The valve will be in the “closed” position if the
upstream pressure drops below the set-point and will fully
open when the upstream pressure exceeds the set-point.
Features
•
•
•
Accurate, stable control from no-flow to full flow
Simple and reliable design
Exceptionally low losses at high flow
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
3-way pilot valve (other types are optional)
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve will be operated
by a pressure sustaining pilot valve to maintain constant
inlet pressure, regardless of flow variations. The valve and
the controls will be a Dorot Series 100 valve or similar in all
aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
16
The valve should be suited for the maximal flow and
allowed headloss
Check for possible cavitation conditions and consult Dorot
in case such conditions are expected
Quality
ISO 9001
Typical Application
Dorot Pressure Relief Valve relieving pump surplus flow from
the system, thus preventing high pressure at low demand
conditions.
Series 100 Valves
Control Functions
DI Pressure Differential Sustaining Valve
5
4
3
2
Description
The valve maintains a preset pressure differential between
its upstream and downstream sides. The valve can control
booster pump discharge, heating and cooling systems,
bypass configurations, filters and other similar systems.
Features
•
•
•
Accurate, stable control from no-flow to full flow
Simple and reliable design
Exceptionally low losses at high flow
Purchase Specifications
1
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
3-way pilot valve (other types are optional)
* Optional component
The valve will be hydraulic, direct sealing diaphragm
type, which allows inline maintenance. No stem, shaft or
guide bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve will be
operated by a pressure sustaining differential pilot valve so
to maintain a minimal pressure differential, regardless of
flow variations.
The valve and the controls will be a Dorot Series 100 valve
or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
The valve should be suited for the maximal flow and
allowed headloss
Check for possible cavitation conditions and consult Dorot
in case such conditions are expected
The connection points of the sensing tubes must
be selected in locations free of turbulence and local
interferences
Typical Application
Dorot Pressure Differential Sustaining Valve controls the flow
at the discharge of a booster pump whose suction pressure
varies.
Quality
ISO 9001
17
Series 100 Valves
Control Functions
FR Flow Control Valve
5
3
4
2
6
1
Description
The valve limits the flow rate in the network to a preset ,
value regardless of upstream pressure variations.
The valve fully opens when the flow rate drops below the
set point.
Features
•
•
•
Accurate, stable control
Simple and reliable design
Low losses when the demand is lower than the set flow
Optional Control System Components:
1
2
3
4
5
6
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
3-way differential pilot valve (other types are optional)
Orifice plate
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve will
be operated by a pressure reducing differential pilot valve
for controlling the flow through the main valve, regardless
of pressure variations. The valve and the controls will be a
Dorot Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
18
A 1/2“ pressure sensing port should be provided, upstream
of the valve
Check for possible cavitation conditions and consult Dorot
in case such conditions are expected
An additional pressure loss of about 2.5 mwc is created
by the orifice plate (at the set flow)
Quality
ISO 9001
Typical Application
Dorot Flow Control Valve limits the flow to a specific
customer.
Series 100 Valves
Control Functions
FE Excessive Flow Shut-off Valve
5
3
4
3
2
6
1
Description
The valve closes drip tight when the flow rate exceeds the
normal value (due to pipe rupture).
The valve will manually re-set open after fixing the break.
Features
•
•
•
Hydraulic burst protection.No electronic controllers are
used
Simple and reliable design
Low losses
Purchase Specifications
Optional Control System Components:
1
2
3
4
5
6
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
3-way differential pilot valve (other types are optional)
Orifice plate
* Optional component
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve will be
operated by a pressure reducing differential pilot valve for
closing when the flow through the main valve exceeds the
safe level, regardless of pressure variations. The valve and
the controls will be a Dorot Series 100 valve or similar in all
aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
A 1/2” pressure sensing port should be provided, upstream
of the valve
The valve is adjusted to close when the flow rate exceeds
the maximal design flow by 10%-20%
An additional pressure loss of about 2 mwc is created by
the orifice plate (at the normal flow)
Typical Application
Dorot excessive flow shutoff valve installed to prevent flood
damages caused by pipe rupture.
Quality
ISO 9001
19
Series 100 Valves
Control Functions
FL Modulating Float Controlled Valve
5
4
3
3
2
1
Description
The main valve is controlled by a float valve, located in the
tank or reservoir and set at the required maximum water
level. The valve maintains the maximum level continuously.
Features
•
•
•
•
•
Accurate and repeatable level control
Simple and reliable design
Easy installation and maintenance
Adjusts the inlet flow to the reservoir’s outlet flow
WRAS Approval no. 0009092
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Needle valve
Modulating float pilot valve
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure and be
operated by a modulating, 2-way float activated pilot valve.
The valve and the controls will be a Dorot Series 100 valve
or similar in all aspects.
Quick Sizing
•
•
Valve size same as the fill line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
•
20
The valve should be suited for the maximal flow
Upstream pressure at closed position should be at least
10m (15psi) higher than the hydrostatic water pressure at
the downstream
Large pressure differentials may cause cavitation damage.
Consult Dorot for solutions if such cases are expected
Prefer use of differential level control in case excessive
noise should be avoided (residential areas)
Quality
ISO 9001
Typical Application
Dorot Modulating Float Controlled valve prevents tank
overflow.
Series 100 Valves
Control Functions
FLEL Electric Float Controlled Valve
4
5
3
2
1
Description
An electric sensor float, located in the tank/reservoir, sends
a command to a solenoid controlled valve. The main valve
will fully open when the solenoid activated and will close
drip tight when the solenoid de-energized, thus enabling
accurate and reliable differential level control.
Optional Addition: Stepped Surge-Preventing Closure.
Features
•
•
•
•
•
Accurate and repeatable differential level control
Low power electric activation
Fast response
Simple and reliable design
Easy installation and maintenance
Optional Control System Components:
1
2
3
4
5
6
Main Valve
Self-flushing filter
Cock valve*
3/2 Solenoid valve
Accelerator relay (optional for valves larger than 150mm/6”)
Electric float switch
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve position
will be controlled by an electric solenoid valve activated from
a float in the tank/reservoir. The valve and the controls will
be a Dorot Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
The valve should be suited for the maximal flow and
allowed headloss
The valve can be opened by the electric command (NC)
or closed by it (NO). The definition refers to the main valve
operation and not to the solenoid’s characteristics
Typical Application
Dorot Electric Float Controlled Valve controlling the water
volume in a tank.
Quality
ISO 9001
21
Series 100 Valves
Control Functions
FLDI Differential Float Controlled Valve
4
5
6
3
2
Description
A float valve controls the main valve, closing it when the
water reaches maximum level, and opening it when the water
drops to its preset minimum level. The differential between
the maximum and the minimum levels is adjustable.
Optional Addition: Stepped Surge-Preventing Closure.
Features
•
•
•
•
•
Accurate and repeatable differential level control
Adjustable differential
Fast response
Simple and reliable design
Easy installation and maintenance
1
Optional Control System Components:
1
2
3
4
5
6
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
Accelerator relay (optional for valves larger than 150mm/6”)
4-way differential pilot valve (other types are optional)
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic pressure. The valve position will be
controlled by a 4-way float pilot located at the top of the tank/
reservoir. The valve and the controls will be a Dorot Series
100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
22
The valve should be suited for the maximal flow
Upstream pressure at closed position should be at least
10m (15psi) higher than the static water pressure at the
downstream
Fast stream and waves may cause mechanical damage
to the float levers. It is advisable to install the pilot in a still
part of the reservoir
Quality
ISO 9001
Typical Application
Dorot Differential Float Pilot Controlled Valve controlling the
water volume in a filling or emptying tank.
Series 100 Valves
Control Functions
AL Altitude Pilot Controlled Valve
5
Tank/Reservior
connection
4
3
2
Description
The main valve is controlled by a highly sensitive pilot,
located outside the tank. The pilot opens or closes the valve
in response to the static pressure of the water.
The pilot allows for differential adjustments between the
maximum and minimum level. Optional Addition: Stepped
Surge-Preventing Closure.
Features
•
•
•
•
•
Accurate and repeatable differential level control
Fast response
Easy access - no float is located in the tank/reservoir
Simple and reliable design
Easy installation and maintenance
1
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Manual over-ride selector valve*
High sensitivity altitude control pilot valve
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve position
will be controlled by a hydrostatic pressure sensing pilot
valve. The valve and the controls will be a Dorot Series 100
valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
The valve should be suited for the maximal flow
The pilot valve must be located at least 2 meters below
the closing level in the tank
When water-hammer/surge expected during closure - add
stepped surge preventing closure function to the altitude
control pilot
Typical Application
Dorot Altitude Pilot Controlled Valve controlling the water
volume in an elevated tank.
Quality
ISO 9001
23
Series 100 Valves
Control Functions
BC Booster Pump Control Valve
6
6
4
8
5
7
7
3
3
2
2
Description
The valve eliminates damaging surges caused by pump
start-up and shut-off. The electrically activated valve
gradually opens on pump start up, and slowly closes before
the pump is switched off. The valve will automatically close
drip tight in case of power failure. Optional Additions: Flow
Rate Limitation, Extended Closure, Two Stage Operating,
Pressure Reducing and Pressure Sustaining.
Features
•
•
•
•
No slam operation
Exceptionally low losses at high flow conditions
Simple and reliable design
Easy installation and maintenance
1
Optional Control System Components:
1
2
3
4
5
6
7
8
Main Valve
Self-flushing filter
Cock valve*
3/2 Solenoid valve
Accelerator relay (optional for valves larger than 150mm/6”)
Open/close speed adjustment needle valve
Check valve
Limit switch assembly
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve position will be
controlled by an electric solenoid valve with adjustable open
close speed control valves. The valve and the controls will
be a Dorot Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
24
The valve should be suited for the maximal flow
Closure time is related to the pipe length and should be
extended for longer pipe
For power failure situations, add a fast reacting checkvalve
in series and a surge anticipating valve to relief possible
surges
Quality
ISO 9001
Typical Application
Dorot Booster Pump Control Valve preventing surges caused
by pump startup and shutoff and drainage of main pipe.
Series 100 Valves
Control Functions
DW Deep Well (Borehole) Pump Control Valve
6
7
6
8
4
5
3
2
Description
The valve eliminates surges caused by the start-up and
shut-off of vertical or submersible pumps. It is a relief valve,
assembled on a T-junction of the main pipeline. When the
pump starts, the valve slowly closes, gradually increasing
network pressure. Before pump shut-off, the valve slowly
opens, gradually reducing network pressure.
Features
•
•
•
•
No slam operation
Simple and reliable design
Easy installation and maintenance
Low Resistance and high flow capacity
Purchase Specifications
1
Optional Control System Components:
1
2
3
4
5
6
7
8
Main Valve
Self-flushing filter
Cock valve*
3/2 Solenoid valve
Accelerator relay (optional for valves larger than 150mm/6”)
Open/close speed adjustment needle valve
Check valve
Limit switch assembly
* Optional component
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve position will be
controlled by an electric solenoid valve with adjustable open/
close speed control valves. The valve and the controls will
be a Dorot Series 100 valve or similar in all aspects.
Quick Sizing
•
The valve should be sized to match the well flow at
5 mwc/8 psi in the valve site (pump head water table
depth):
D[mm] ≥ 170 x √Flow [m3/hr]
D[inch] ≥ 0.55 x √Flow [gpm]
Design Considerations
•
•
•
The valve should be suited for the maximal flow
Closure time is related to the pipe length and should be
extended for longer pipe
For power failure situations, add a fast reacting checkvalve
in series and a surge anticipating valve to relief possible
surges
Typical Application
Dorot Deep Well Pump Control Valve preventing surges
caused by pump start-up or shut-off.
Quality
ISO 9001
25
Series 100 Valves
Control Functions
RE Surge Anticipating Valve
3
7
4
6
3
5
6
3
3
2
Description
The valve protects the pumping system from water hammer,
caused by sudden pump shut-off (case of power failure, for
example). The valve is assembled on a T-junction of the main
pipeline, instantly opens when the pump stops, relieving
the returning high pressure wave. The valve slowly closes
once the pressure returns to the static level. The valve also
functions as a pressure relief valve.
Features
•
•
•
•
•
No slam operation
Simple and reliable design
Easy installation and maintenance
Low Resistance and high flow capacity
Protection for sewage as well as clean water pumping
systems
1
Optional Control System Components:
1
2
3
4
5
6
7
Main Valve
Self-flushing filter
Cock valve*
Low-pressure relief pilot valve
High-pressure relief pilot valve
Needle valve
Pressure gauge
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve will be operated
by pressure relief pilot valve for opening at a low pressure set
point and another pilot for pressure relief at a high pressure
set-point. The valve and the controls will be a Dorot Series
100 valve or similar in all aspects.
Quick Sizing
•
The valve should be sized to match the 80% of the normal
flow at static head in the valve site:
D[mm] ≤ √(250 x Flow[m3/hr] / √Pressure[mwc])
D[inch] ≤ √(0.109 x Flow[gpm] / √Pressure[psi])
Design Considerations
•
•
•
26
Install a manual separation/throttling valve, upstream of
the valve position
Closure time is related to the pipe length and should be
extended for longer pipe
The valve sensor tube must be connected to the main
line
Quality
ISO 9001
Typical Application
Dorot Surge Anticipating Valve prevents water-hammer
surges caused by an un-expected pump shut-off.
Series 100 Valves
Control Functions
QR Quick Pressure-relief Valve
4
5
3
2
1
Description
The valve opens instantly when the pressure in the pipeline
exceeds the safe level, thus relieving excessive pressure
from the network. When the pressure returns to normal, the
valve closes slowly, at an adjustable pace.
Optional Control System Components:
Features
•
•
•
•
•
No slam operation
Simple and reliable design
Easy installation and maintenance
Low Resistance and high flow capacity
Protection for sewage as well as clean water pumping
systems
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Pressure relief pilot valve
Needle valve
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve will be operated
by a pressure relief pilot valve for fast opening at a high
pressure set-point. The valve and the controls will be a Dorot
Series 100 valve or similar in all aspects.
Quick Sizing
•
The valve should be sized to match the expected relief
flow at the set opening pressure:
D[mm] ≤ √(250 x Flow[m3/hr] / √Pressure[mwc])
D[inch] ≤ √(0.109 x Flow[gpm] / √Pressure[psi])
Design Considerations
•
•
•
Install a manual separation valve, upstream of the valve
position
Closure time is related to the pipe length and should be
extended for longer pipe
The valve opens instantly at the set pressure. For
regulating the system pressure use a Pressure Sustaining
Relief Valve and not a Quick Relief valve
Typical Application
Dorot Quick Pressure-relief Valve protects a system against
pressure surges caused by pump start-up or valves closure.
Quality
ISO 9001
27
Series 100 Valves
Control Functions
TO Two Stage Opening Addition
4
5
3
2
1
Description
The device can be added to any control function and will
prevent damage caused by too fast filling of a drained
pipeline. The flow rate will be restricted, until the network,
downstream of the valve is full and than a full opening of the
valve is enabled. Please consult DOROT for more details.
Features
•
•
•
•
Can be added to any pipe-filling control function
User adjusted filling pace
Completely hydraulic – no electronic controllers, batteries
or relays are used
Simple and reliable design
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Pilot valve
3-way selector valve*
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve’s
opening will be restricted by a two-stage opening control
that limits the filling flow until the downstream system is full.
The valve and the controls will be a Dorot Series 100 valve
or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
28
The valve should be suited for the maximal flow and
allowed headloss
Prefer selection low pressure diaphragms when the valve
is expected to stay in open position for long periods
Quality
ISO 9001
Typical Application
Dorot two-stage function prevents water-hammer/surges
caused by fast drained pipe filling.
Series 100 Valves
Control Functions
SP Surge Preventing Stepped-Closure Addition
5
4
3
2
1
Description
The device can be added to any control function and
automatically adjusts the closing speed of a valve that
is located at the end of a long pipeline. This ensures a
moderate flow change pace that prevents pressure surges
from evolving. Please consult DOROT for more details
Features
•
•
•
•
Can be added to any fast closing control function
Automatically self-adjusted closing pace
Completely hydraulic – no electronic controllers, batteries
or relays are used
Simple and reliable design
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
Stepped closure adjusting pilot valve
3-way selector valve*
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve’s closure
pace will be controlled by a stepped closure control pilot that
stops the closing procedure whenever surge waterhammer
conditions evolve. The valve and the controls will be a Dorot
Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
•
The valve should be suited for the maximal flow and
allowed headloss
Prefer selection low pressure diaphragms when the valve
is expected to stay in open position for long periods
Should be used whenever the supply pipe is longer than 2
km/ 1.2 mile and the flow speed exceeds 1.5 m/sec
Typical Application
Dorot stepped closure function prevents water-hammer
surges caused by fast closing level control valve.
Quality
ISO 9001
29
Series 100 Valves
Control Functions
EC PLC Controlled Valve
4
4
5
3
2
Description
The valve is controlled by a PLC controller that enables
local or remote control of various functions such as, time
related operation, the batching of liquid, and conditional
(automatically modified) control parameters, in various
applications. A recommended option is using the Dorot
“ConDor” controller that enables the selection from a
vast range of pre-programmed control functions and their
combinations.
Features
•
•
•
•
•
Can perform any control function
Highly accurate and reliable electronic control
Low power actuation
Simple and reliable design
Controlled by Dorot ConDor valve controller or by a third
party controller
1
Optional Control System Components:
1
2
3
4
5
Main Valve
Self-flushing filter
Cock valve*
2/2, NC solenoid valve
3-way selector valve*
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located within the water passage. The valve
will be activated by the line pressure or by an external
hydraulic or pneumatic pressure. The valve position will be
determined by a set of two solenoid valves controlled by a
PLC controller. The valve and the controls will be a Dorot
Series 100 valve or similar in all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for continuous operation 5.5 m/sec
(18 ft/sec)
Design Considerations
•
•
30
The valve should be suited for the maximal flow and
allowed headloss
Solenoid wiring diameter should be selected so that
the activation voltage - losses will equal the rated value
±10%
Quality
ISO 9001
Typical Application
Dorot PLC Controlled Valve adjusts the flow rate following a
set-point signal sent from a remote center.
Series 100 Valves
Control Functions
DE Deluge Dry-pipe and Pre-action Valves
5
3
4
2
1
6
Description
The valve prevents flow of water into fire extinguishing
sprinklers system until it is activated by the activation
devices. Different valve and control system configurations
are available to meet the customer and relevant standards
demands. Please check Dorot Fire-Fighting publications for
further information.
Features
•
•
•
•
•
Fast opening
Simple and reliable design
Automatic reset
Wide range of applications
UL Approval no. VLFT EX.6543
Optional Control System Components:
1
2
3
4
5
6
Main Valve
Self-flushing filter
Manual activation valve
Solenoid activation*
Pilot activation (by detection line)*
Drain valve
* Optional component
Purchase Specifications
The valve will be hydraulic, direct sealing diaphragm type,
which allows inline maintenance. No stem, shaft or guide
bearing will be located with in the water passage.
The valve will be activated by the line pressure or by an
external hydraulic or pneumatic pressure. The valve and
the controls will be a Dorot Series 100 valve or similar in
all aspects.
Quick Sizing
•
•
Valve size same as line or one size smaller
Maximum flow speed for intermittent operation 8 m/sec
(26 ft/sec)
Design Considerations
•
•
The valve should be suited for the maximal flow and
allowed headloss
Check Dorot catalogue for Fire Fighting Valves for more
information with regards to valve and applications types
Typical Application
Dorot valve, activated by a splinker detection line.
Quality
ISO 9001
31
Series 100 Valves
Pilots and Accessories
Plastic Mini Pilots
For valve sizes 20mm to 100mm - 3/4” to 4”
Pressure rating: 10 bar / 145 psi
29-100
29-200
29-300
3-way pressure reducing pilot valve
3-way multi purpose
(pressure reducing and sustaining) pilot valve
3 way differential multi purpose
(flow control, differential pressure sustaining)
29-100
29-200
29-300
Metal Mini Pilots
For valve sizes 20mm to 150mm - 3/4” to 6”
Pressure rating: 25 bar / 360 psi
68-410
2-way pressure reducing pilot valve
68-500
2-way pressure sustaining pilot valve
68-220
3-way (pressure rating 16bar / 230psi) pressure
reducing pilot valve
31-10
R/F/S
3-way multi purpose (pressure reducing and sustaining,
flow-control) pilot valve
68-410
68-500
68-220
31-10R
31-10F
CXPR
CXPS
31-310
76-200
68-710
Metal Pilots
For valve sizes 40mm to 600mm - 11/2” to 24”
Pressure rating: 25 bar / 360 psi
CXPR
2-way pressure reducing pilot valve (CXRS - remote
sensing, CXRD differential pressure reducing)
CXPS
2-way pressure sustaining pilot valve
(CXSD differential pressure sustaining)
31-310
3-way multi purpose (pressure reducing and sustaining)
pilot valve
76-200
3 way differential multi purpose
(flow control, differential pressure sustaining)
68-710
2-way pressure sustaining pilot valve
High Sensitivity Metal Pilots
For valve sizes 40mm to 600mm - 11/2” to 24”
Pressure rating: 25 bar / 360 psi
70-110
3 way differential multi purpose (flow control, altitude
control and differential pressure sustaining) with
adjustable differential
70-410
2-way differential pressure reducing mini pilot valve
(flow control and altitude control)
31-10H
3-way pressure reducing and differential control
70-110
70-410
Float Pilots
For valve sizes 40mm to 600mm - 1 1/2” to 24”
Pressure rating: 25 bar / 360 psi
70-200
70-550
70-300
70-400
70-610
32
Electric float
Vertical, differential, 3 and 4-way metal float pilot
Modulating, 2-way plastic float pilot for irrigation use
(pressure rating: 8 bar / 115 psi)
Modulating, 2-way metal float pilot
Horizontal, differential, 3-way metal float pilot
Quality
ISO 9001
70-300
70-400
70-200
70-550
70-610
31-10H
Series 100 Valves
Pilots and Accessories
Plastic Relays
For valve sizes 20mm to 150mm - 3/4” to 6”
Pressure rating: 10 bar / 145 psi
25-300
‘Galit’
3-way / 2 positions NO w. 3/8" ports hydraulic relay
3-way / 2 positions NC or NO, small hydraulic relay
25-300
‘Galit’
Metal Relays
For valve sizes 40mm to 600mm - 11/2” to 24”
Pressure rating: 25 bar / 360 psi
66-210
66-300
28-200
28-300
3-way / 2 positions NO (66-213: NC) hydraulic relay
3-way adjustable hydraulic relay
2-way / 2 positions hydraulic relay
3-way / 2 positions hydraulic relay
66-210
66-310
28-200
28-300
Mini Solenoids
For irrigation valve sizes 20mm to 150mm - 3/4” to 6”
Pressure rating: 10 bar / 145 psi
Operating Voltage:
AC: 24V
DC: 12V or 24V
Latch 7.5-30V
D2
D3
2-way NC solenoid valve
3-way NC or NO solenoid valve
D2
D3
B2
B3
“Y” Filter
Self-Flushing Filter
Heavy-duty Solenoids
For valve sizes 20mm to 600mm - 3/4” to 24”
Pressure rating: According to the selected orifice and solenoid
type
Operating Voltage (others available upon request):
AC: 24V, 110V or 220V
DC: 12V or 24V
Latch 9V, 12V, 24V
B2
B3
2-way NC or NO solenoid valve
3-way NC or NO solenoid valve
Control Filters
Self-Flushing, Inline
- Stainless steel screen filter, located within
the main valve, and rinsed continuously by the stream
Sizes: 1/4”, 1/2”
External, “Y” type
- Stainless steel screen installed in a “Y”
shaped body on the pressure source.
Sizes: 3/8”, 1/2”
External, large - A large volume external filter
Quality
ISO 9001
33
Series 100 Valves
Other Dorot Products
Automatic Control Valves
Series 300 - Disc seal, Globe type valve.
Very accurate regulations at near zero flow
conditions. Minimum head-loss while fully open.
Available in sizes: 1.5” (40mm) - 32” (800mm).
Glass Reinforced Nylon Valves Diaphragm
sealing valves made of reinforced Polyamide
used in Greenhouses, Field Crops, Irrigation,
Landscaping, Water Treatment (non corrosive).
Available in sizes: 3/4” (20mm) - 3” (80mm).
Series 500 - Disc seal, Y type valve. This valve
is compact, partially made of new composite
materials. Wide range of flow and pressure
regulation.
Available in sizes: 1.5” (40mm) - 8” (200mm).
Back Flushing Valves Specially designed
valves for back flow flushing of filtration systems.
Available in Cast Iron or Glass Reinforced Nylon,
Single or Double chamber operation.
Available in sizes: 2” (50mm) - 4” (100mm).
uPVC Valves - Diaphragm sealing valves made
of uPVC. For use with aggressive water and
with underground (PVC) piping.
Available in sizes: 3” (80mm) - 6” (150mm).
Air Release Valves
Manual Valves
Butterfly Valves - Soft sealing
valves (Wafer type) with options
of gear, lever (or other) operation.
Available in sizes:
2” (50mm) - 24” (600mm).
Non Return Valves Swing check valves, tilting
disc check valves, double flap
check valves.
Non Metal Air Release Valves Kinetic, Automatic and Combination Air Release
Valves made of Polypropylene materials.
Available in sizes: 1/2” (12mm) - 2” (50mm).
Ductile Iron Air Release Valves Kinetic, Combination and Sewage Air Release
Valves made of ductile iron. Option for surge
arrestor feature. Available in sizes:
2” (50mm) - 12” (300mm).
Water Meters
Gate Valves Valves with soft and
resilient or rigid sealing.
34
Quality
ISO 9001
Water Meters Multi-Jet, Single-Jet, Irrigation Meters (pelton
wheel type), Woltman Meters and Volumetric
Meters.
Available in sizes: 1/2” (15mm) - 24” (600mm).
Series 100 Valves
Typical Applications
Quality
ISO 9001
35
Series 100 Valves
DOROT AUTOMATIC CONTROL VALVES
Founded in 1946, DOROT is a leading developer, manufacturer and marketer of
a wide range of superior quality automatic control valves. DOROT’s experienced
Research & Development Dept. has a long tradition of generating innovative
solutions for the application of water control systems. These include, waterworks
distribution networks, sewage and effluent disposal, fire protection, mining and
irrigation systems.
DOROT’s commitment to excellence begins with using the highest quality
materials. The company’s engineering experts are constantly working to provide
customers with a broad range of valve patterns and sizes in a wide variety of
metals and grades including: Cast Iron, Ductile Iron, Cast Steel, SST, Bronze,
Marine Bronze, Polyamide and P.V.C.
The experts at DOROT custom-design each valve application according to
specific control requirements. Most of the production process, which includes
machining and coating, takes place in modern in-house facilities.
Before leaving the factory, each product is hydraulically tested. An advanced
testing laboratory simulates the anticipated field conditions.
With distribution in more than 70 countries world-wide, a key component of
the DOROT difference is its outstanding customer service. This includes field
assistance, technical advice, training programs and follow-up consultations.
It is all of these factors that make DOROT a leader in fluid control technology
and customer satisfaction.
Quality
ISO 9001
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising