Selection of Electric Actuators for Control Valve

• The electric actuator is selected based on the previously chosen control valve.


• The stroke of the linear actuator should be greater than or equal to the stroke of the valve.


• It is recommended to select electric actuators from the list of compatible devices specified in the controller specifications.


• It is recommended to select electric actuators from the list of compatible devices specified in the valve specifications.


• The higher the throttling on the valve, the greater the closing force the electric actuator should be selected for.


• To avoid overloading, most electric actuators are equipped with limit switches that cut off power to the actuator when the valve stem reaches the end positions.


• The voltage of the electric actuator and the controller must match, i.e., only an electric actuator with a voltage of 24V can be connected to a controller powered by 24V from the mains.


• When selecting, the speed of the electric actuator should be taken into account. For example, slow drives are suitable for regulating heat consumption in heating systems, while fast drives are needed to control valves in supply ventilation systems. Slow electric drives are usually cheaper than fast ones.

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