Double Orifice Air Valve Flange End

1. PRODUCT PROFILE

Double orifice air 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. Prosper Flow combined air valve can remove the air existed in the pipe more flexible, preventing of the pressure fluctuation or other damages in the piping system. Double orifice air valve is applicable especially to the main water pipes and deep well pumps piping system.

2. FEATURES

· Discharge air more flexible

· Preventing of the water hammer

· Discharge the air slowly

· Safer self-protection

· Long service life

3. TECHNICAL SPECIFICATION

· Nominal pressure: PN10 / PN16 bar

· Size: 2”~ 8” (DN50 ~ 200mm)

· Materials: cast iron A126 B (GG25), ductile iron A536 65-45-12 (GGG40/50)

4. STANDARD

· 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

· Working temperature: 0 ℃ ~ + 80 ℃

5. APPLICATION

· Water projects

· Real Estate

· Water treatment industry

· Power plant

· Pump station

Working principle of Single Orifice Air Valve:

In the exhaust state, the pontoon pulls down one end of the lever due to gravity. At this time, the lever is in a tilted state. There is a gap in the contact part of the lever and the exhaust hole, and the air is discharged from the exhaust hole through this gap. The water level rises, the float floats upward under the buoyancy of the water, and the sealed end face on the lever gradually presses on the exhaust hole until the entire exhaust hole is completely blocked. The exhaust valve is now completely closed.