Diaphragm valve actuator. Image credit: Spirax Sarco The advantages of pneumatic valve actuators are that they are strong, light, simple, and fast. The disadvantage is that precise position control is ...

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 ...

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, ...

"Basic Pneumatic Schematics and Circuit Design" provides an overview of different common pneumatic schematic symbols, including air treatment symbols; pressure, flow, and direction valve symbols; and ...

Prepare equations required to determine an actuator (i.e. pneumatic, hydraulic, or electric) size based on piston or effective diaphragm area and spring characteristics. This subcommittee will address ...

An actuator acts like a switch in a pneumatic circuit – it allows ... be actuated using different methods. 3/2 valves are the component used to control a single acting cylinder or piston.