Pneumatic actuator for valves and dampers ... the valve in one direction while a compressed spring actuates the valve in the other. With double-acting devices, fluid pressure actuates the valve in ...

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, ...

ISA96.03 – The basic requirements for pneumatic valve actuators of the single- and double-acting types used for on-off applications. The standard will define the basis pneumatic actuator types (i.e., ...

They are faster and more powerful than pneumatic actuators because the high pressures ... document provides basic requirements for hydraulic part-turn valve actuators, both double acting and single ...