There are quite a variety of valves, and the working principle are not the same. Generally, the opening and closing control is realized by rotating the valve plate angle and lifting valve plate. When it is matched with the electric actuator, the electric actuator should be selected according to the type of the valve.
1.1. Part-turn electric actuator (angle <360 degrees)
The rotation of the output shaft of the electric actuator is less than one circle, that is, less than 360 degrees, usually 90 degrees, to achieve the opening and closing process control of the valve.
1.2. Multi-turn electric actuator (angle > 360 degrees)
The rotation of the output shaft of the electric actuator is greater than one circle, that is, greater than 360 degrees. Generally, multiple turns are required to control the opening and closing process of the valve. Such electric actuators are suitable for gate valves, globe valves, and so on.
1.3. Linear electric actuator (linear motion)
The movement of the output shaft of the electric actuator is linear, not in the form of rotation. These electric actuators are suitable for single-seat control valves, two-seat control valves.