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Main features
Sensitive response to slight changes
Long life system Internal coating baked epoxy or enamel Pilot controlled Drop tight closing
Piston Actuated Valve Type G
Body Construction:
Leakage Test:Flange facing:Flange Drilling:Pressure - Temperature Rating:
ISO 5751
DIN 3230BN rate 1DIN2526
According to customers demandDIN2401
A B CWeight
Kg.S i z e
inch mm.2
21/2
34681012141618202428
3032
5065
80100150200250300350400450500600700
750800
210310
31035645851066086098011001250125014501570
16201710
100120
120150200187250290395400430430500620
700750
410240
240300350413400400525580650650800930
10501090
1554
54621041672502804007901150137016902300
29003460
A
B
C
In-line maintenance
Simple adjustmentSizes 2-32Pressure rating PN-16 to PN-64 Temp. range 15 c to 85 c
Hydraulic Control Valve is the most efficient valve for automatic operationof industrial and municipal distribution systems or any other system that requiresadjustable working conditions.
The valve operates by pipeline water pressure and does not require any otherexternal energy source. The valve is a completely independent device and canbe installed at any location in the pipeline, provided there is just a minimumwater pressure allowing its operation. An operating piston surface double thesize of the sealing surface enables the control chamber movement towardsopening or closing with no external force or energy required.
The G type is a piston actuated valve, which varies from 2 to 32 in a pressureranging from PN-16 to PN-64.Raphael G type, globe pattern, piston actuated control valves are a heavy
duty, high pressure and large diameters throttling valves.As a piston actuated valve it is specially designed to withstand high restrictionlevels at a wide range of flow and diameters.
The metal construction of the piston enables a smooth operation, with novibrations. Bronze and Stainless steel internal parts provide a cavitation resistancat very low flows keeping metal and iron parts of valves from being damage
Low corrosion rates are obtainable due to high quality bronze and stainlessteel internal parts and high quality epoxy or enamel coating (Potable waterapproved).Regulation in high restriction rates is obtainable by a half restricted plug thatcombine a cost effective protection to seat and seal, keeping sensitive parts inthe valve from high velocity water passage.Globe pattern body construction gives equal wear for the control unit, thusprolonging its lifespan.
1
PistonActuatedT ypeG
Standards:
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P i s t o n A c t u a t e d T y p e G
Performance Charts
PSI mwc14.5
1075
3
2
10 100 1000 10000
100001000100
0.01
0.1
1
10 max. intermittent flow
max. recommended flow
2 3 4 6 8 1 0
1 2
1 4
1 6
2 0
1 8
2 4
3 0
3 2
m3/ h
gpm
min. recommended flow
Q(m3/h) =Kv p(bar)Q(Gpm) =Cv p(psi)
2 8
Head loss for fully opened valve with regular plug
2 1 / 2
0.81
0.6
0.4
0.2
Size Cv Kvinch mm.
Cv/Kv Rate for fully opened valve with regular plug
221/234681012
506580100150200250300
5210012020844077011601390
458710518038067010101200
350400450500600700750800
1416182024283032
Size Cv Kvinch mm.21002770417047406700103001075011600
182024003600410058008900930010100
To achieve flow rate values for fully opened valveswith half restricted plug multiply by 0.7
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G
Regulation Ranges
70 145 220 290 360
REGULAR
2-12 14-32
HALF RESTRICTED
2-12 14-32
Cavitation ChartInlet Pressure
Bar
25
20
15
10
5
0
5 10 15 20 25
360
290-
220
145
70
P.S.I
P.S.I
Bar
Outlet Pressure
1
2
3
Zone 1
Zone 2
Zone 3
Normal operation zone, obtained by regular plug.
High reduction rates, suggested to cavitation risk, obtained by a half restricted plug.
Cavitation zone, please contact factory for valve sizing and solution provision.
Optional Plugs Charcteristics
RANGE OF FLOWS FOR THE DIFFERENT PLUG FORMS
H E A D
L O S S
FLOW RATE
Max.intermittent flow 120%
Max. normal flow
Flow velocity 2m/sec
Min. normal flow
R e g u l
a r
7 0 % o f m a x . n o r m a l
R e s t
r i c t e d2 0 % b e l o w
m i n . f l o w
H l a f
O PE N I N G D I A GR AM
100
80
60
40
20
0 2 0 4 0 6 0 8 0 1 0 0
R e g u la r
Half Restr icted
FLOW RATE
%
%
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P i s t o n A c t u a t e d T y p e G
RAPHAELS UCV - Universal Control Valve, is the perfect solution for today's and tomorrow's needs for variable, quick response,
multi task applications of system management in waterworks infrastructure.RAPHAEL's UCV (Universal Control Valve) is specially designed to perform all control duties. The UCV's parameters can be easily changed by a simple controller access. Just by pushbotton one can set different values transmitted as Analog inputs (Pressure, Flow, Level, Temp., humidity,etc.), digital inputs (Maximum level, temp., overflow, saturation, etc.) or time related.
T o avoid tamper and unauthorized changes in system's variants a password entry can be activated for different levels of interference (Operator's,Technician's or Programmer's level).
Universal Control Valve
A local display keeps operating team up-to-date with system's condition and performance. Local keypad allows instant changes in set points and parameters providing dynamic and adjustable on-line operating and system management.
V alve programming can be made by any computer regardless of its physical location, and uploaded into the local control unit (installed on the Universal Control Valve) through the Controller's Network Ports. By pressing a botton the Universal Control Valve can perform a complete different set of control features.
N o c o m p o n e n t c h a n g es a r e r e q u i r e d i n o r d e r t o c h a n g e v a l ve ' s a p p l i c a t i o n .
U C V
Starting Future Today
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3 - 4
2 Parts
Material
Gray Cast Iron (CI)Ductile Cast Iron (DI)Cast steel (CS)SteelBronzeBrassStainless Steel (SS)Rubber (NBR,EPDM)Coating
Internal coating optionEnamel (En)
2PARTS LIST
1 Body2 Seat3 Plug4 Rubber seal5 Disc6 Stem7 Piston8 Nut9 Cylinder10 Cover11 Bolt12 "O"-ring13 Spring14 Bushing15 Plug16 Piston seat17 Indicator18 O-ring19 Nut20 Bolt21 Pin22 Nut23 Bearing24 O -ring25 Nut26 O -ring27 Bolt28 O -ring29 "O"-ring30 Piston lead31 Piston cover32 Bolt
BronzeSS304 BronzeNBR/EPDM--Brass--Steel (R)-NBRSS302-BrassNBRSS303NBRSteel (ZP)Steel (ZP)---NBR-NBR-NBR----
* PN16: Body and cover CI* PN40: Body and cover 8-12 CS
Seat, plug, disc and cylinder SS
The materials as per PN25
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P i s t o n A c t u a t e d T y p e G
14 - 32
6-12ist
Standard
ASTM A48ASTM A536ASTM A216 WCBASTM A36ASTM B62ASTM B16ASTM A276ASTM D2000Rilsan (R)Epoxy (Ep)Zinc Plated(ZP)
-4 6-12 14-32
DI (Ep)*Bronze*Bronze*NBR/EPDMS304*
BrassS304/NBR
BrassBronzeDI(Ep)*S304*NBRS302
BrassBrassNBRS303
NBRteel (ZP)teel (ZP)S304
Brass
NBRBrassNbrS304
NBRNBR
DI (Ep)*Bronze*Bronze*NBR/EPDMSteel (R)*BrassSS304/NBRBrassBronzeDI (Ep)*SS304*NBRSS302BrassBrassNBRSS303NBRSteel (ZP)Steel (ZP)SS304Brass TeflonNBR-NBRSS304NBRNBR---
Steel (Ep)SS316SS304NBR/EPDMSS304-SS304/Steel (Ep)-SS304Steel (Ep)SS304NBR--BrassNBRSS303NBRSteel (ZP)Steel (ZP)-Brass TeflonNBR-NBRSS304-NBRSS304Steel (R)SS304
For PN64 standards please consult factory.Other materials and standards are available uponcustomers request.
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G
Pressure Reducing Valve Type G 60
Flow Control Valve Type G 70
Pressure Sustaining and Reducing Valve Type G 68
7.Pressure reducingpilot
8.Pressure gauge
PARTS LIST1."G" valve2.Cock valve3.Cock valve4.Needle valve
5.Cock valve
6.Filter 1
3 2
6
4
7
5
8
7.Flow limit pilot8.Orifice plate
PARTS LIST1."G" valve2.Cock valve3.Cock valve4.Needle valve5.Cock valve
6.Filter
8
1
3 2
6
4
7
5
1."G" valve
2.Cock valve3.Cock valve4.Needle valve5.Cock valve
6.Filter
PARTS LIST
7.Pressure reducing pilot8.8a.Pressure gauge9.Pressure relief/
sustaining pilot
9 8a8
5
7
4
623
1
The valve automatically reduces a greater upstream pressureto a steady lower downstream pressure. The downstreampressure is governed by a pilot and can be adjusted.Downstream pressure is maintained at a steady set pressureregardless of changes in inlet pressure or flow rate. Minorchanges in downstream pressure will immediately cause thevalve to open or close accordingly, returning the system toa preset.
The valve maintains a steady flow rate at any workingconditions. Regardless of pressure changes or demand, thevalve will keep flow constant. The flow is controlled by a pilotand a calibrated orifice plate, and can be adjusted within arange of 20%. The orifice plate size is determined by therequired flow range and is specific for each project.
The valve performs both pressure reducing andpressure sustaining features. It maintains a constantupstream pressure to an adjusted value as a pressuresustaining valve, and reduces greater upstreampressure to a steady lower downstream pressureas a pressure reducing valve. Both functions occurindependently, and the valve constantly modulatesaccordingly.
Application for type G
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P i s t o n A c t u a t e d T y p e G
Differential Level Control Valve Type G 13
Altitude Control Valve Type G 40
Pressure Sustaing/Relief Valve Type G 807
8
5 4
623
1."G" valve2.Cock valve3.Cock valve
4.Needle valve
5.Cock valve
6.Filter
PARTS LIST
7.Pressure relief/sustaining pilot
8.Pressure gauge
3
4
52
1
1
3 2
6
4
7
5
6.Filter 7.Altitude pilot
PARTS LIST1."G" valve2.Cock valve3.Cock valve
4.Needle valve
5.Cock valve
The pressure sustaining valve automatically controls the presetupstream pressure. The inlet pressure will be maintained steadyregardless of changes in flow rate or downstream pressure.
The pressure sustaining valve is commonly used as a pressurerelief valve, installed in a T configuration. At any condition, thevalve will open only after the preset pressure is achieved.
Bi level control valve maintains liquid level in water tanks,reservoirs and water storages. The valve will fullyclose at a high preset point when waterreaches its maximum level , and fullyopens at a different, adjustablepreset point, allowing water flowin. The bi level control valve is an
on/off, non modulatingcontrol valve.
1."G" valve2.Cock valve3.3-way cock valve
PARTS LIST
4.Bi-level 3-wayfloat pilot
5.Filter
The altitude control valve automatically maintainsliquid level in water tanks, reservoirs and storagesat its maximum preset point. The valve is pilotcontrolled, and operates by comparing the watercolumn pressure to the spring adjustment. Thevalve will be fully closed when the water reachesits preset level. The opening level is determined bythe spring selection and varies from 30 to 100 cm.
1
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PsonAcuaedTypeG
Anti - Burst Control Valve Type G 90
Pressure Sustaining and Booster Pump Control Valve Type G 80 20
34a
5
1
2
6
4
7
9
8
8
1111a
10
12
1
3 26
45
7 9
9
5
7
4
6
23
1
8
The Surge anticipating control valve protects pipelinesystems and its accessories from damages caused by
water hammers. The valve is built to anticipate thedangerous energy accumulation that occurs during a
surge and relieves it out of the pipeline. With the beginningof the pressure drop, that
indicates the water hammerevolution, the valve will open,
relieving the necessary amount of fluid to the atmosphere, and prevents the continuanceof the surge. In case pressure rises the valve will re-open, relieving excess pressure as a Pressure relief valve.
surge relief pilot
6.Filter 7.Low pressure
surge relief pilot8.Pressure gauge9.Cock valve
PARTS LIST1."G" valve2.Cock valve3.Cock valve4.Needle valve
4a.Needle valve5.High pressure
The pump control valve is made to protect pumps frompossible damages caused by powerful start-ups and shut-downs of centrifugal pumps. The valve's purpose, is primarilyminimizing the formation of surges during on/off operationof the pump, and protect pump from backflow. The valveis electrically interlocked with pump's control panel. Openingand closing speed can be adjusted, offering a smooth start-up and shut-downs. By the action of a pilot The Pumpcontrol valve is also used toregulate maximum flow
9.Pressure relief/sustaining pilot
10.3-way N.C.solenoid valve
11.11a.Check valve12.Limit switch
assembly
PARTS LIST1."G" valve2.Cock valve3.Cock valve4.Needle valve5.Cock valve6.Filter 7.Pressure gauge8.Finger filter
The purpose of the anti burst valve is to prevent water flowin pipes and systems that have been physically damaged fromany reason. A high sensitivity flow pilot and an orifice plate,that indicates the current flow in the pipeline, control thevalve. When a preset flow ("Burst" condition) is reached thevalve will tight close. The valve can only be re-opened manuallyby turning the manual
override cock valve inits control loop.1."G" valve2.Cock valve3.Cock valve4.Needle valve4a.Needle valve5.Cock valve
PARTS LIST6.Filter 7.Anti-burst pilot8.Orifice plate9.Manually override
locking valve
Surge Anticipating Control Valve Type G 88
N.C.
4a