Swing Type Non-Return Valve
KBN Engineers Swing Type NRVs let fluid pass in one direction only. Forward flow swings the hinged disc open; when flow stops or reverses, the disc closes against the seat, protecting pumps and equipment from backflow.
Manufactured in WCB carbon steel and CF8 / CF8M stainless steel with flanged or screwed ends. Each valve is hydro tested at 425 Psi (30 Kg/cm²) on the body and air tested at 7 Kg/cm².
Technical Specifications & Parameters
| Parameter | Technical Specification Value |
|---|---|
| Material of Construction (M.O.C) | WCB / CF8 / CF8M |
| Manufacturing Standard | BS 1868 |
| Pressure Rating | Class 150#, 300# & 600# |
| End Connections | Flanged / Screwed |
| Size Range | 25 mm to 250 mm |
| Hydro Test Pressure - Body | 425 Psi (30 Kg/cm²) |
| Hydro Test Pressure - Seat | 300 Psi (21 Kg/cm²) |
| Pneumatic Air Test | 7 Kg/cm² |
Automatic Backflow Stop
The hinged disc closes on its own when flow reverses, with no actuator or operator needed.
Tested to 425 Psi Shell Test
Body and seat hydro tested, plus a 7 Kg/cm² pneumatic air test on every valve.
Flanged or Screwed Ends
Choose the end connection to suit your pipeline, from 25 mm up to 250 mm.
Need Swing Check Valves for Pump Discharge Lines?
We supply Swing Type NRVs from 25 mm to 250 mm in Class 150#, 300# and 600# with WCB or stainless steel bodies.