The basic structure of the electric actuator The actuator is the actuator's pushing device, which generates corresponding thrust according to the size of the control signal to push the regulating valve to move. The regulating valve is the regulating part of the electric actuator. Under the action of the thrust of the actuator, the regulating valve produces a certain displacement or angle to directly regulate the flow of the fluid. In order to ensure that the actuator can work normally and improve the adjustment quality and reliability, the actuator must also be equipped with certain auxiliary devices. Commonly used auxiliary devices are valve positioners and handwheel mechanisms.

