Cast Iron Air Release Valve

Single Ball Chamber - Small orifice single air valve, screwed or flanged with or without isolating stop cock to release air at or below the maximum working pressure.

Double Ball Chamber - - Double ball air release valve, the small orifice releasing air at the working pressure, the large orifice for dealing with large volume of air during pipe filling and empting the body, pressure cover and splash cover are of graded cast iron, carefully machined and jointed. For small orifice valve, balls are of rubber, air vent orifices of brass, screwed inlet nipple of gun metal. Large orifice valves have balls of vulcanite closing on rubber seating backed with leather.

Available size: 50 mm (2”), 80 mm (3”), 100 mm (4”), 150 mm (6”), 200 mm (8”)