Double Orifice Air Release Valve

2 “~ 8” (50~200mm)
Cast Iron, Ductile Iron

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Double Orifice Air Release Valve Descriptions

Double orifice air release valve is one normal type of exhaust valve in the long big piping transport, which is normally mounted on the top of the pipe or pipe air holding place to discharge the air in the pipe, When the power supply for the pump is off, pump is stopped working, there will be negative pressure inside of pipeline, there will be vibration or break happened. Then, the air valve will work to suck into air quickly, keep the pressure inside the pipeline to be safe, making sure the pipe work normally. Flowspec combined air vent valve can remove the air existed in the pipe more flexible, proventing of the pressure fluctuation or other damages in the piping system. Double orifice air release valve is applicable especially to the main water pipes and deep well pumps piping system. 

  • Discharge air more flexible
  • Preventing of the water hammer
  • Discharge the air slowly
  • Safer self-protection 
  • Long service life
  • Design & manufacturing: BS EN1074-4:2000
  • Face to face: BS EN1074-4
  • Flanged ends: EN 1092-2:1997, ASME B16.1/B16.42, AS4087
  • Inspection & testing: EN 12266-1:2012
  • Quality assurance: ISO 90001
  • Special: WRAS approved
  • Applicable medium: water, sewage, sea water
  • Applicable temperature: 0 ℃ ~ + 80 ℃ (higher temperature is available upon request)
  • Nominal pressure: PN1.0 / PN1.6MPa
  • Size: 2”~ 8” (DN50 ~ 200mm)
  • Materials: cast iron A126 B (GG25), ductile iron A536 65-45-12 (GGG40)
  • Water projects
  • High buildings
  • Water treatment industry
  • Power plant
  • Pump station

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