The actuator is very important for the electric control valve, so the selection of the actuator should be very stable, and it is necessary to summarize the reasons of all aspects and consider what kind of actuator to choose. Let us tell us about the implementation of the electric control valve. Institutions pick knowledge.
Regardless of the type of actuator, the output force is the effective energy used to overcome the valve load (mainly refers to the unbalanced force and unbalanced moment plus friction, sealing force, gravity and other related forces effect). Therefore, in order to make the electric control valve work normally, the configured actuator must be able to generate enough output force to overcome various resistances, and ensure the valve's high degree of sealing and valve opening.
Regarding dual-effect pneumatic, hydraulic or electric actuators, there is generally no reset spring. The magnitude of the effect force has nothing to do with its running direction. Therefore, the key to selecting an actuator is to understand the large output force and the rotating torque of the motor. Regarding the single-effect pneumatic actuator, the output force is related to the opening of the valve, and the force appearing on the electric control valve will also affect the motion characteristics, so it is required to establish a force balance in the opening scale of the entire control valve.
