Basic Composition of Pneumatic Valve Actuator

1. The pneumatic device is mainly composed of cylinders, pistons, gear shafts, end covers, seals, screws, etc.; the complete set of pneumatic devices should also include opening instructions, stroke limits, solenoid valves, positioners, pneumatic components, manual mechanisms, and signals Feedback and other components.

2. The connection size of the pneumatic device and the valve should meet the requirements of ISO5211 (bottom), GB/T12222 and GB/T12223.

3. The pneumatic device with manual mechanism should be able to use its manual mechanism to open and close the pneumatic ball valve when the air source is interrupted. When facing the hand wheel, the hand wheel or handle should rotate counterclockwise to open the valve, and rotate clockwise to open and close. The valve is closed.

4. When the end of the piston rod is internally or externally threaded, there should be a wrench mouth suitable for standard wrenches.

5. The sealing ring of the piston should be easy to replace and repair.

6. For pneumatic devices with buffer mechanism, the stroke length of the buffer mechanism can refer to the regulations in "Table 1".

7. The pneumatic device with adjustable buffer mechanism should have a mechanism for adjusting the buffer function outside the cylinder.

8. The thread size of the air inlet and outlet of the cylinder should comply with MANUR NORM (accessory standard) sypv, GB/T7306.1, GB/T7306.2 and GB/T7307.