The actuators on the valve mainly use pneumatic actuators and electric actuators. For example, pneumatic ball valves and pneumatic butterfly valves use pneumatic actuators. Let us introduce the principle of pneumatic actuator to you below.
The pneumatic actuator adopts a piston-type cylinder and arm conversion structure, which has the advantages of large output torque and small size. The actuator adopts a fully sealed waterproof design, so it is not easy for water to enter. The cylinder block adopts imported mirror cylinder, which has the advantages of corrosion resistance, low friction and strong durability.The working principle of the pneumatic actuator is mainly to input air into the working hole of A, and the air pressure pushes the piston to move to both sides, so that the output shaft rotates counterclockwise to drive the valve to realize the opening and closing operation, and the air is input into the working hole of B, and the air pressure pushes the piston to Moving in the middle also achieves the above effect. Pay attention to these details when working, the special treatment of the inner surface guarantees minimum friction and long life. Sliding device made of low friction material avoids direct metal-to-metal contact.