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Pneumatic Actuators A pneumatic actuator is a mechanical device that converts compressed air energy into linear or rotary motion to operate valves or other mechanical components. It functions by directing pressurized air into a chamber, where the force acts on a piston or diaphragm to produce controlled movement. When air pressure is released, internal springs or opposing chambers return the actuator to its original position. This design allows for rapid, reliable, and repeatable motion with min