Asahi/America Thermoplastic Valves

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Asahi/AmericaConstant Flow Valves
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Asahi/AmericaConstant Flow Valves
PVC CPVC ANSI Flanged
In Line Type
Y Type
1/2,3/4
1,2,3,4
Spring
Plug
Orifice
Spring
Orifice
Plug
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Asahi/AmericaConstant Flow Valves
Features Benefits
High durability and resistance to chemicals High
accuracy Flexible flow rate Opening degree
indicator
High durability and resistance to chemicals
The spring is made of stainless steel with
coating of PCTFE. ETFE acts as an excellent gas
barrier to chemicals such as Cl2,HF,HNO3,HCL and
so on. The superior durability has been proven by
conducting a repeated spring fatigue test .(1
Million cycles)
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Asahi/AmericaConstant Flow Valves
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Asahi/AmericaConstant Flow Valves
Nominal Size
1/2, 3/4, 1, 2, 3 ,4
Body material
PVC (Unplasticized Polyvinyl Chloride)
Flange connection
ANSI, DIN etc.
(Please specify according to upstream pressure)
Upstream line Pressure ranges.
Types Under 35 psi 36 - 70 psi 71 - 110
psi 111 - 150 psi
2.85 - 14.22 psi Type A B 4.27 - 21.33 psi
Type D (only 3) 4.27 - 28.45 psi Type C
Pressure differential range for function
Working Temp.
30 - 120 F
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Asahi/AmericaConstant Flow Valves
Rangeability
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Asahi/AmericaConstant Flow Valves
Type - A
Fluid flows through the valves internals Suitable
for semi-conductor.(Ultra pure water line)
Type - B
Flow rate setting range is large. (Covers small
flow rates to large flow rates)
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Asahi/AmericaConstant Flow Valves
Type - C
Range of working differential pressure is large
. (For lines with large pressure differential
between upstream downstream)
Type - D
A large flow rate can be set.
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Asahi/AmericaConstant Flow Valves
P1
P2
P2
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Asahi/AmericaConstant Flow Valves
High accuracy
Flow Quantity
It is possible to change the flow quantity by
changing the position of the plug.
Pressure Differential
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Asahi/AmericaConstant Flow Valves
B type (2)
C type (2)
39.6
39.6
35.2
35.2
30.8
30.8
26.4
26.4
Flow (gal/min)
22.0
Flow (gal/min)
22.0
17.6
17.6
13.2
13.2
8.8
8.8
4.4
4.4
0
0
2.85
5.7
8.6
11
14.22
8.6
11.4
14.3
17.1
20
22.9
25.7
28.6
31.4
34.3
37.1
2.85
5.7
Differential Pressure (psi)
Differential Pressure (psi)
2.85 psi - 14.22 psi
4.27 psi - 28.45 psi
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Asahi/AmericaConstant Flow Valves
Parallel Lines
CV Q Ös.g. / DP (Q flowrate (gpm) s.g.
specific gravity)
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Asahi/AmericaConstant Flow Valves
lt Fish Farms gt ltAquariumsgt
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Asahi/AmericaConstant Flow Valves
lt Salt Water gt
Applications
The protection of ion-exchange membranes.
Flow quantity is fixed.
No Automation or Manual Adjustment Required
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Asahi/AmericaConstant Flow Valves
Water Supply or Filtration
AV Constant Flow VALVE
Water supply equipment