Some water valves are actuated manually, by a hand wheel or crank, or with mechanical devices such floats and cams. Others are actuated by electric, pneumatic, electro-hydraulic, or hydraulic methods.

Other types of water valves include pressure relief valves, shut off valves, solenoid valves, and toggle valves. There are many types of valves which can be used for air applications. Each valve type ...

This standard provides basic requirements for pneumatic valve actuators of the double-acting and single-acting types, used for on-off and modulating valve duties. It includes guidelines, ...