1、 Before use, the pipeline and the overflow part of the valve body shall be cleaned with water to prevent residual iron filings and other sundries from entering the inner cavity of the valve body. 　　
2、 When the pneumatic ball valve is closed, there is still some medium left in the valve body, and it also bears a certain pressure. Before overhauling the ball valve, close the shut-off valve in front of the ball valve, open the ball valve to be overhauled, and fully release the internal pressure of the valve body. If it is an electric ball valve or a pneumatic ball valve, the power and air supply should be disconnected first. 　　
3、 Generally, the soft seal ball valve uses PTFE as the sealing material, and the sealing surface of the hard seal ball valve is made of metal surfacing. If it is necessary to clean the pipe ball valve, be careful not to damage the sealing ring and leak during disassembly. 　　
4、 When disassembling the flange ball valve, the bolts and nuts on the flange shall be fixed first, then all nuts shall be slightly tightened, and finally fixed with force. If a single nut is forced to be fixed first, and then other nuts are fixed, the gasket surface will be damaged or broken due to uneven pressure between the flange faces, resulting in leakage of the medium from the valve flange butt joint. 　　
5、 The pneumatic ball valve prompts that if the valve is cleaned, the solvent used must not conflict with the parts to be cleaned and not corrode. If it is a special gas ball valve, it can be cleaned with gasoline. Other parts can generally be cleaned with reclaimed water. When cleaning, the residual dust, oil stain and other attachments shall be completely cleaned. If it is impossible to clean with clean water, the valve body and parts can be cleaned with alcohol and other cleaning agents without damaging them. After cleaning, the installation can be carried out after the cleaning agent has completely evaporated. 　
6、 If there is fine leakage at the packing during the operation, the valve stem nut can be tightened slightly until the leakage stops, but it cannot be tightened continuously. 　　
7、 If stored in the open for a long time, the valve body and components will be rusted and cannot be used normally. The ball valve shall be rain proof, waterproof and moisture-proof, and the flange cover shall be tightly covered. Valves stored for more than 12 months should be tested from the beginning to ensure stable performance.

Therefore, when purchasing and using this pneumatic plug valve, we should fully understand the above factors, so that our friends can get more practical help in the use process. Therefore, when choosing this product, we should fully understand the price and overall quality of this product, This ensures the actual use effect of the whole equipment, and will not cause many problems in the whole pipeline transmission process because of some problems with the equipment.