1. Insufficient air source pressure: Increase the air source pressure and set up an air storage tank on the way to reduce pressure fluctuations.

2. The flow is not enough or other devices with large air consumption are working at the same time. Add air storage tank and add air compressor to reduce pressure fluctuation.

3. The torque of the pneumatic rotary actuator is too small. Increase the AT pneumatic actuator specification

4. The valve load is too large, and the valve core or other valve parts are assembled too tightly and unreasonably. Refit, adjust valve torque

5. The friction of the cylinder fluctuates greatly, need proper lubrication

Other causes of slow action of the pneumatic butterfly valve:

1. The action of the pneumatic butterfly valve begins to jump, and the load is too large. Increase the AT pneumatic actuator specification

2. The pneumatic butterfly valve jumps at the end of the action, the action is too fast, and the inertial energy is too large. Add a speed control valve or external buffer

3. Pneumatic butterfly valve return signal without signal Signal power circuit, short circuit, open circuit, repair the power circuit, readjust the cam to the correct position, and replace the micro switch.