The actuator is divided into electric and pneumatic. Taking pneumatics as an example, pneumatics are divided into single-acting (spring return) and double-acting. Compressed air pushes the screw to drive the valve stem to rotate. According to the following three points, the selection of pneumatic actuators will definitely be safer and faster.
1. Select the actuator according to the size of the gas source (instrument gas)
2. The torque required to turn the valve is too small to rotate, and the valve life is not long if it is too large. Generally, a 30% margin for torque is OK.
3. There are standards for the installation platform, as long as you find the right standard according to the valve, you will not be wrong.
The selection methods of the above three kinds of pneumatic actuators are the whole contents of the selection of pneumatic actuators that I shared with you today. If it is helpful to you, please forward it~