PART B:What are the common valve actuator types

2.Multi-turn actuator 

If the output shaft of the valve actuator rotates more than one circle, that is, more than three hundred and sixty degrees, it is called a multi-turn electric actuator. In general, the output shaft needs to earn more turns to realize the valve opening and closing process control. Therefore, multi-turn valve actuators are usually used in conjunction with gate valves and globe valves.