 Connexion Series RFT & RFF Direct Acting Pressure Sustaining / Back Pressure Valve Connexion Threaded (RFT) and Flanged (RFF) all 316 Stainless Steel Direct acting Pressure Sustaining and Back Pressure Valves are suitable for the fluid of Pure Water, Acid & Alkaline, Steam 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 to 5 Bar 4 to 10 Bar 8 to 13 Bar Applied Temperature : -15C to +210C
Valve Body Testing Pressure : 21 Bar
Pressure gauge indicates 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 |
Item No | Size | A(mm) | L(mm) | CV | 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 |
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 excess 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.
 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 |
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