Non-Return/Check Valve

Non-Return/Check Valve

Swing Type – Grooved

Non-Return Valves or Check Valves are valves that normally allow fluid to flow through it in only one direction. BRISTOL Check Valves are swing type with a tilted clapper. BRISTOL Check Valves clapper design produces quick, non-slam closure before flow reversal can occur meeting the FM requirements for an anti-water hammer valve rating.


Use in one-way flow pipeline to prevent the water from back flow.


  • Approvals: UL and FM
  • Grooved Standard: ANSI / AWWA C606
  • Flange Standard: ASME/ ANSI B16.1 Class 125 or ASME/ ANSI B16.42 Class 150 or BS EN1092-2 PN16
  • Sizes: 2-1/2”, 3”, 4”, 5”, 8”, 10”, 12”
  • Nominal Pressure: 350 PSI
  • Max. Working Pressure: 350 PSI
  • Max. Testing Pressure: 700 PSI
  • Max. Working Temp: 80°C / 176°F


  • Body: Ductile Iron ASTM A536 65-45-12
  • Clapper: Stainless Steel 304 ASTM A276
  • Seat Ring: C95400 ASTM A148
  • Coating Details: Epoxy coated interior and exterior by Electrostatic Spray