Pneumatic actuator

A pneumatic control valve actuator converts energy (typically in the form of compressed air) into mechanical motion.

A pneumatic actuator mainly consists of a piston or a diaphragm which develops the motive power.

Valves require little pressure to operate and usually double or triple the input force.

Having a larger piston can also be good if the air supply is low, allowing the same forces with less input.

Larger forces are required in high pressure or high flow pipelines to allow the valve to overcome these forces, and allow it to move the valves moving parts to control the material flowing inside.