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Pneumatic Actuators Hayward Series PCD/PCS
All-Around Best Choice: Hayward Series PCD and PCS Pneumatic Actuators are the best choice for applications requiring pneumatically actuated true union ball valves, three-way ball valves or butterfly valves. These actuators are available in models with appropriate torque outputs for all valves from 1/4" all the way up to 24" pipeline size.
Two Modes of Operation: The Series PCD pneumatic actuators are air-to-air (double acting) actuators, while the PCS Series are air-to-spring (fail safe) actuators. Air-to-air actuators require air pressure for both actuation cycles, open and close. Air-to-spring actuators utilize a mechanical spring to operate one of the actuation cycles. This type of actuator can be set to have the spring, rather than air pressure, either open or close the valve.
Compact Design: Series PCD/PCS pneumatic actuators feature a four piston rack and pinion design. This design results in a high torque output actuator, yet one that is very lightweight and compact in comparison with other rack and pinion actuators.
Manual Override Standard: Both PCD and PCS pneumatic actuators can be operated manually in the event of air or electric failure.