A pneumatic actuator converts energy (typically in the form of
compressed air) into mechanical motion.
The motion can be rotary or linear, depending on the type of actuator.
A Pneumatic actuator mainly consists of a piston, a cylinder, and valves or ports.
The piston is covered by a diaphragm, or seal, which keeps the air in the upper portion
of the cylinder, allowing air pressure to force the diaphragm downward, moving the
piston underneath, which in turn moves the valve stem, which is linked to the internal
parts of the actuator.
An electric actuator is powered by motor that converts electrical energy to mechanical torque.
The electrical energy is used to actuate equipment such as multi-turn valves. It is one of the
cleanest and most readily available forms of actuator because it does not involve oil.
Pneumatic & Electric Actuators
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