Installation of pneumatic ball valve
1) Remove the maintenance covers at both ends of the flange end, and flush and clean the valve when the valve is completely opened. 　　
2) Before the device, the whole machine shall be tested according to the regular signal (electricity or gas) (to prevent the vibration caused by transportation from affecting the operation performance), and the device can be put on line only after passing the test (wiring shall be in accordance with the circuit diagram of electric actuator). 　　
3) Before connecting with the pipeline, the residual impurities in the clean pipeline must be washed and removed (these substances may damage the valve seat and ball). 　　
4) During the installation, please do not use the actuator part of the valve as the lifting ornament to prevent damage to the actuator and accessories 　　
5) This type of valve shall be installed in the horizontal or straight direction of the pipeline. 　　
6) The pipeline adjacent to the installation point shall not be sagging or subject to external force. Pipe supports or supports can be used to eliminate the violation of the pipeline. 　　
7) After connecting with the pipeline, please insert and lock the flange connecting bolts with regular torque. 　　

Second, when the packing needs to be gland, the bolts must be tightened evenly. Only in this way can the appearance of the valve be maintained without deformation. This is to prevent the impact on the movement of the valve stem after the valve is bruised, and finally make the medium leak when flowing.