Anti Shock combination air valve figure FOX 3F-AS

The CSA Mod. FOX 3F-AS, is a full bore high quality single chamber double function combination air valve with a built in anti-water hammer non slam surge prevention system. The air valve allows release of air pockets from pressurized pipelines, and admits large volume of air in the event of pipe draining/burst, to prevent vacuum and negative pressure conditions. The anti–shock mechanism, with adjustable nozzles, will control the air outflow rate thus avoiding fast approaches of water column with potential sudden closures of the mobile block and the risk of water hammer. Entirely made in ductile cast iron, with air release system and seat in stainless steel, FOX 3F-AS stands out for its long lasting performances and reliability.

Product features

• Body and cover in ductile cast iron GJS 450-10.

• Air release system in stainless steel.

• Floats in solid PP.

• Seat in stainless steel.

• Anti-slam system in stainless steel with adjustable nozzles.

• Painting with fluidized bed technology RAL 5005.

Working conditions

• Pressure range: 10-16-25-40 bar.

• Minimum working pressure: 0.2 bar.

• Treated water maximum 60°C, higher temperature on request.

Connections

• Flanges size from DN 50 to DN 300 mm.

• Flanges standard EN 1092/2, ANSI 150, AS; different on request.

• Threaded 1″ – 2″ BSP F; NPT on request.

Standard

• Design and testing according to EN 1074, AWWA C-512, AS 4956, AS 4020, WRAS.