single-acting actuator

single-acting actuator

single-acting actuator
A linear hydraulic or pneumatic actuator that uses fluid power for movement in one direction and a spring for its return.
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The single action of the control valve can be described as the action in which positioners deliver and exhaust air from a single side of the single-acting actuator. Therefore this type of positioner has an overall simple working operation.
The single action of the control valve can be described as the action in which positioners deliver and exhaust air from single side of the single-acting actuator. This actuator uses spring force for on and off operation of the actuator.

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