Precautions for pneumatic butterfly valve operation
1. When starting, please confirm that the clutch handle is in the corresponding position.
2. If the pneumatic butterfly valve is controlled in the control room, please turn the switch to the REMOTE position, and then control the switch of the pneumatic butterfly valve through the SCADA system.
3. If it is manually controlled, turn the change-over switch to the LOCAL position, and then operate the switch of the pneumatic butterfly valve locally. When the pneumatic butterfly valve is opened or closed, it will automatically stop working, and finally turn the operation change-over switch to the middle position.
4. When using field operated valves, the opening and closing instructions of valves and the operation of valve stems shall be monitored, and the opening and closing degree of valves shall meet the requirements.
