Rotary Motion Valve Rotary motion valves (rotary valves) such as ball, plug and butterfly valves that rotate through a quarter-turn (90 degrees) or more from open to close. This includes multiturn ...

Pneumatic valve actuators adjust valve position by converting air pressure ... Rotary actuators are used for rotary motion valves such as ball, plug, and butterfly valves through a quarter-turn or ...

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, ...