In addition to checking the surface of the electric ball valve, it is also necessary to carefully check the inside of the valve, remove the protective covers on both sides of the valve, and then check the cleanliness of the inside of the valve body, focusing on whether the inside of the valve is clean. If a large amount of dust is found, it is necessary to thoroughly clean the valve cavity, Since the closed surface of the pneumatic pipeline ball valve is spherical, once there are sundries, it will cause great damage to the closed surface of the valve, which we do not want to happen. Many operators have ignored this, and started to start the valve without cleaning up the impurities. As a result, a large number of scratches and scratches occurred before it was used for a long time, leading to the valve can not be used normally.

The pneumatic butterfly valve uses a round butterfly plate rolling with the valve to open and close, so that the pneumatic valve to complete the starting action is primarily used as a block valve, and can also be planned to have the function of conditioning or section valve and conditioning. Now butterfly valves are increasingly used in low-pressure large and medium caliber pipelines.