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Asahi/America Constant Flow Valves. 1/2”,3/4”. 1”,2”,3”,4”. Spring. Plug. Orifice. Spring. Orifice. Plug. Asahi/America Constant Flow Valves. PVC & CPVC ANSI Flanged. Y Type. In Line Type. Asahi/America Constant Flow Valves. Features & Benefits. - PowerPoint PPT Presentation
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Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
SprinSpringg
OrificOrificee
PlugPlug
SprinSpringg
OrificOrificee
PlugPlug
1/2”,3/4” 1/2”,3/4” 1”,2”,3”,4”1”,2”,3”,4”
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
In Line TypeIn Line Type Y TypeY Type
PVC & CPVC ANSI FlangedPVC & CPVC ANSI Flanged
High durabilityHigh durability and resistance to chemicals and resistance to chemicalsHigh accuracyHigh accuracyFlexibleFlexible flow rate flow rateOpening degree indicatorOpening degree indicator
High durability and resistance to High durability and resistance to chemicalschemicalsThe spring is made of stainless steel with coating of The spring is made of stainless steel with coating of PCTFE.PCTFE.
ETFE acts as an ETFE acts as an excellent gas barrierexcellent gas barrier to chemicals such to chemicals such as Clas Cl22,HF,HNO,HF,HNO33,HCL and so on.,HCL and so on.
The superior durabilityThe superior durability has been proven by conducting a has been proven by conducting a repeated spring fatigue test repeated spring fatigue test ..(1 Million cycles)(1 Million cycles)
Features & BenefitsFeatures & Benefits
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Flexible flow ratesFlexible flow rates
Opening degree Opening degree indicatorindicator
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Calibrated Flow DialCalibrated Flow Dial
Nominal Size
Body material
Flange connection
Upstream line Pressureranges.
Pressure differentialrange for function:
(Please specify according to upstream pressure)
Types Under 35 psi 36 - 70 psi
71 - 110 psi111 - 150 psi
2.85 - 14.22 psi : Type A & B4.27 - 21.33 psi : Type D (only 3”)4.27 - 28.45 psi : Type C
Working Temp. : 30 - 120 °F
ANSI, DIN etc.
PVC (Unplasticized Polyvinyl Chloride)
1/2”, 3/4”, 1”, 2”, 3” ,4”
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Nominal
Size (kgf/cm2)
1/2" B 0.176 - 3.52 0.04 - 0.8 20 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)(15mm) C 0.35 - 3.52 0.08 - 0.8 10 : 1 4.27 - 28.45 0.03 - 0.2 (0.3-2.0)
3/4" B 0.26 - 5.28 0.06 - 1.2 20 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)(20mm) C 0.53 - 5.28 0.12 - 1.2 10 : 1 4.27 - 28.45 0.03 - 0.2 (0.3-2.0)
1" A 2.2 - 8.81 0.5 - 2.0 4 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)(25mm) B 0.441 - 8.81 0.1 - 2.0 20 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)
C 0.881 - 8.81 0.2 - 2.0 10 : 1 4.27 - 28.45 0.03 - 0.2 (0.3-2.0)
2" A 8.81 - 35.22 2.0 - 8.0 4 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)(50mm) B 1.76 - 35.22 0.4 - 8.0 20 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)
C 3.52 - 35.22 0.8 - 8.0 10 : 1 4.27 - 28.45 0.03 - 0.2 (0.3-2.0)
A 22.02 - 88.07 5.0 - 20.0 4 : 1 4.85 - 14.22 0.02 - 0.1 (0.2-1.0)3" B 4.403 - 88.07 1.0 - 20.0 20 : 1 2.85 - 14.22 0.02 - 0.1 (0.2-1.0)
(80mm) C 8.81 - 88.07 2.0 - 20.0 10 : 1 4.27 - 28.45 0.03 - 0.2 (0.3-2.0)D 66.04 - 132.1 15.0 - 30.0 2 : 1 4.27 - 21.33 0.03 - 0.15 (0.3-1.5)
4" C 44.03 - 264.2 10 - 60 6 : 1 4.27 - 28.45 0.03 - 0.2 (0.3-2.0)(100mm) D 132.1 - 264.2 30 - 60 2 : 1 2.85 - 21.33 0.02 - 0.15 (0.3-1.5)
PSI Mpa
Pressure differencial range for functionType
Gal/min m3/hr
Flow quantityRangeability
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Type - BType - B
Flow rate setting range is Flow rate setting range is large.large.(Covers small flow rates to (Covers small flow rates to large flow rates)large flow rates)
Flow
Flow
Type - AType - A
Fluid flows through the valves Fluid flows through the valves internalsinternalsSuitable for semi-conductor.Suitable for semi-conductor.(Ultra pure water line)(Ultra pure water line)
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Range of working differential pressure is large .(For lines with large pressure differential between upstream & downstream)
Type - CType - C
Flow
Type - DType - DA large flow rate can be set.
Flow
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
P1P2 P2
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Pressure Pressure DifferentialDifferential
It is possible to change the It is possible to change the flow quantity by changing flow quantity by changing the position of the plug.the position of the plug.
High High accuracyaccuracy
Flo
w Q
uan
tity
Flo
w Q
uan
tity
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
B type (2”) C type (2”)
Differential Pressure (psi)
Flo
w (
gal/
min
)
2.85 psi - 14.22 psi
39.6
35.2
30.8
26.4
22.0
17.6
13.2
8.8
4.4
02.85 5.7 8.6 11.4 14.3 17.1 20 22.9 25.7 28.6 31.4 34.3 37.1
35.2
30.8
26.4
22.0
17.6
13.2
8.8
4.4
0 2.85 5.7 8.6 11 14.22
Flo
w (
gal/
min
)
39.6
Differential Pressure (psi)
4.27 psi - 28.45 psi
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Q1+Q2
Q1
Q2
LINE A
LINE B
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Parallel LinesParallel Lines
CV = Q s.g. / P] (Q = flowrate (gpm) s.g. = specific gravity)
< Fish Farms ><Aquariums>
seawatertank
AV Constant Flow VALVE
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
< Salt Water >< Salt Water >
The protection of ion-exchange membranes.
Flow quantity is fixedFlow quantity is fixed.
No Automation or No Automation or Manual AdjustmentManual AdjustmentRequiredRequired
Asahi/Asahi/AmericaAmerica
Constant Flow Constant Flow ValvesValves
Applications:Applications:
AV Constant Flow VALVEWatersupply
equipment
Asahi/AmericaAsahi/AmericaConstant Flow ValvesConstant Flow Valves
Water Supply or FiltrationWater Supply or Filtration