combination air valve triple function nonslam

SUZHOU RSF VALVE is one of leading manufacturers of water works air release valve from China, our products include BS5163 metal seat gate valves, resilient gate valve, swing check valve, ball check valve, butterfly valve, strainer, and air valves etc.

Air Valve's Fuction

1- Stop water delivery, when the water column breaks apart in the pipe, the buffering air opens, quick inhaling air, prevent nagative pressure from damaging the pipe. 

2-When the detached water column is under nagative pressure, it starts to flow back, the buffer air valve is converted from negative pressure to positive pressure, start a lot of venting.

3- When the return flow increases, the pressure differntial of the buffer device begins to rise, when exceed the set value, the buffer device start, the exhaust passage shut down about 95%, separate water column cut off by air, inhibite the flow rate of return water, air valve snifting air slowly inhaled by 5% of the channels, prevent the cut -out bridge water hammer. 

Standard:

Basic Design: EN-1074/4, AWWA C-512

Flange EN1092-2 or ANSI CL150

Test:EN12266-1 Class A

Design Feature:

PN10 PN16 PN25

Flange Conecting

with Isolatio valve

Double air balls, single orifice or double orifice

Stainless Steel or ABS floating

100% water tightness

Anti water hammer system

Material:

Body: Ductile Iron GGG50, GGG40, EN GJS 500-7, ASTM A536

Floating: Stainless Steel or ABS

Thanks for your selection of RSF VALVE’s ductile iron body AIR RELEASE VALVE, BS5163 ductile iron body Metal to Metal Seat Gate Valve! If you have any inquiries of our water works valves of EN1171 or BS5163 Metal to Metal Seat Gate Valve, please don’t hesitate to call us or email us!