Double Air Valves

The body is of cast iron, with guides for the ball floats, the covers of cast iron. The large orifice chamber has vulcanite-covered ball and rubber seating, and is furnished with cast iron shield plate; the small orifice has rubber-covered ball & bronze air-release nipple.

Tested by hydrostatically for pressure tightness to double the maximum working pressure stated below:

Inlet Dia in inches 2 3 4 6
Max. W.P. Feet Head 200 575 575 575