How to choose the electric actuator for the valve?


electric control valve
We all know that electric actuators and valves supporting more which used in automated control systems. There are many types of electric actuators, different in the way of operation, such as angular travel electric actuator is the output corner torque, and straight trip electric actuator is the output displacement thrust. The type of electric actuator used in the system should be selected according to the work needs of the valve. The type of valve itself is quite diverse, the use of various valves and the working principle is not the same, but in general the valve is by rotating the valve plate angle or lift valve plate to control the opening or closing or switching angle. The selection of electric actuators is based on the opening and closing of the valve to support the way.

1, Multi-turn electric actuator
The multi-turn electric actuator is also an electric actuator that outputs the corner torque, which differs from the angular actuating actuator by its output shaft rotation greater than 360 degrees. Multi-turn electric actuator for multi-turn rotation to complete the opening and closing process of the rotary valve, such as gate valve and cut-off valve.

2, Straight stroke electric actuator
Straight-stroke electric actuators output displacement thrust, it is suitable for valve type control valve type, such as single-seat control valve and two-seat control valve. 3, angle travel electric actuator
The angular actuators are used in conjunction with rotary valves. The rotation angle of the output shaft of the electric actuator is less than one week, that is, 360 degrees, such as butterfly valve, ball valve and plug valve rotation angle is usually less than 90 degrees, corner travel electric actuator rotation in 90 degrees position can achieve the valve opening and closing process. Angle travel electric actuator according to the installation interface, divided into direct-type electric actuator and the base of two types of crank-type electric actuator. The output shaft of the direct-acting electric actuator is directly connected directly to the valve stem of the valve, and the base crank type electric actuator is connected with the valve stem through the crank.