2、 Attention shall be paid to:
1. Confirm the geographical location for installing the pneumatic ball valve: when there is water or moisture on the ground, change the installation location or remove the water or moisture completely to ensure that the site does not sink, and the foundation must be firmly pressed. At this time, adjust the pipe to a level position with the ground.
2. One end of the pipe shall be fixed to the welding machine first, and then the packing of the pneumatic ball valve shall be opened, and one end of the pneumatic ball valve shall be fixed. If the fixed length of the butt welding machine is not enough to fix the pneumatic ball valve, two fixed machines shall be used to fix it. The other end of the pneumatic ball valve shall be adjusted to the same height as the fixed machine. The fixed surface processing heating plate is installed with pressure welding heating to maintain the separation of the joint cooling welding machine.
3. The pipe at the other end shall be welded according to the welding method after being fixed.

Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. The pneumatic butterfly valve uses a round butterfly plate that rotates with the valve stem for opening and closing, so as to realize the starting action. The pneumatic valve is mainly used as a block valve. It can also be designed to have the function of regulating or section valve and regulating. At present, butterfly valves are increasingly used in low-pressure large and medium-sized pipelines.