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‧The whole set is made by stainless steel #316, and it is suitable for the fluid of pure water, acid & alkaline fluid, vapor or air.
‧Back pressure valve can maintain required pipeline pressure and flow, and also release over high pressure.
‧Design of piston and diaphragm improves the inability of sustaining pressure and leakage.
‧Back pressure chamber controls the valve gate and let gate respond, quickly and adjust pressure accurately.

‧Pressure Adjusting Range : 1 ~ 5 kgf/cm2
　　　　　　 　　 　　 　        4 ~ 10 kgf/cm2
　　　　　 　　　　 　 　        8 ~ 13 kgf/cm2

‧Applied Temperature : -15℃ ~ 210℃

‧Valve Body Testing Pressure : 21 kgf/cm2 (1 kgf/cm2)

‧Pressure gauge medicates the sustaining pressure.

No
Part Name
Material
1
Gauage
Upon request
2
Cover
316 Stainless Steel
3
O-ring
Viton
4
Shaft
316 Stainless Steel
5
Sealing spacer
Viton
6
Piston
316 Stainless Steel
7
Main body
316 Stainless Steel
8
Diaphragm
Viton
9
O-ring
Viton
10
Spring
Spring Steel
11
Spring cover
316 Stainless Steel
12
Washer
304 Stainless Steel
13
Adjusting stem
304 Stainless Steel
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　(Thread end)
Item No Size A(mm) L(mm) CV值
RFT15-S 1/2" 80 70 2.4
RFT20-S 3/4" 105 85 9.0
RFT25-S 1" 105 92 11.0
RFT40-S 1 1/2" 130 115 21.0
RFT50-S 2" 130 120 25.0
◎Special order is needed for size over 14" or particular fluid.
‧Back pressure (Sustaining) Valve：
　Installed in branch pipe to maintain the stable pressure of fluid inside pipe. When pressure exceeds setting valve, it will automatically release over high pressure.

‧Pressure Relief Valve：
　Installed in branch pipe. When pressure exceeds setting valve, valve gate will quickly and fully open to release pressure. As pipeline pressure goes down to certain level, valve gate will slowly.

‧Applied condition of Back Pressure Valve：

◎In different pressure systems of processing pipelines, installing back pressure valve can maintain required pressure of the systems and ensure safe use of equipments after pressure reducing valve reduces pressure.
　


　
　◎ Installing back pressure valve enables largest flow application and stabilize pipeline pressure.

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6F, No.59, Changjiang St., Chianjen Chiu,
 Kaohsiung 806, Taiwan , R.O.C.
TEL : 886-7-331-1060
 FAX : 886-7-331-0100

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■ Photo

 ■ Pressure Reducing Valve Set

■ Full Open Style Silent Check Valve

 ■ Water Piping Illustration

■MULTI-FUNCTION AUTO-CONTROL VALVES
 ●Pressure Reducing Valve
●Pressure Sustaining Valve
 ●Pressure Relief Valve
●Solenoid Control Valve
●Float Valve
 ●Direct-Activated Pressure Reducing Valve

●Direct-Activated Pressure reducing Valve (Stainless Steel 316)

●Direct-Activated Back Pressure  Valve (Stainless Steel 316)

■WATER HAMMER ARRESTERS
 ●L style water hammer arrester
 ●I style water hammer arrester  (Thread End)
 ●I style water hammer arrester  (Flange End)
 ●Angle valve style water hammer arrester

■ Requirement

 ■ sales@watervalve.com.tw