Usually consists of a quarter-turn electric actuator (0~90° partial rotation) and the butterfly valve are mechanically connected as a whole, and they are combined after installation and debugging.
According to the action mode, there are switch type and regulation type.
Switch type is to directly switch on the power supply (AC220V or other power supply levels) to complete the switching action by switching the positive and negative directions.
Adjustable type uses AC220V power supply as power, and receives 4~20mA (0~5 and other weak current control) signals preset by the industrial automation control system to complete the adjustment action.
