In addition to this aspect, before the maintenance of pneumatic ball valve, you'd better know how such an accident occurred, that is, why the equipment failed. After the confirmation of this aspect, you will know how to use it better. If we are not clear about the cause of the fault, similar problems may occur after the repair. Come in advance to have a better understanding of why such a fault occurs. We can better eliminate the problem, so as to truly ensure our future use.

How to repair the electric ball valve?
1. As long as the pressure before and after the ball valve is removed, the ball valve can be disassembled and differentiated. 　　
2. In the process of differentiation and reinstallation of ball valves, it is necessary to protect sealing parts, especially non-metallic parts, such as O-rings, and other parts. 　　
3. When reinstalling the ball valve body, the bolts must be tightened symmetrically, gradually and evenly. How to repair the electric ball valve? 　　
4. The cleaning agent shall be compatible with rubber parts, plastic parts, metal parts and operating media (such as gas) in the ball valve. When the working medium is gas, the metal parts can be cleaned with gasoline (GB484-89). Clean non-metallic parts with pure water or alcohol. 　　
5. The separated individual parts can be cleaned by immersion method. The metal parts with undifferentiated non-metallic parts can be wiped with clean and fine silk cloth impregnated with cleaning agent (to prevent fibers from falling off and adhering to the parts). All grease, dirt, glue and dust adhering to the wall surface must be removed during cleaning. 　　
6. The non-metallic parts shall be taken out of the cleaning agent immediately after cleaning, and shall not be soaked for a long time. How to repair the electric ball valve? 　　
7. After cleaning, it is required to wait for the volatilization of the cleaning agent on the washed wall surface (it can be wiped with a silk cloth not soaked in the cleaning agent) for installation, but it shall not be put aside for a long time, otherwise it will rust and be polluted by dust. 　　
8. New parts shall also be cleaned before installation. 　　
9. During installation, it is not allowed to have metal chips, fibers, grease (regularly used outside) dust, other impurities, foreign matters, etc., contaminate, adhere to or stay on the surface of parts or enter the cavity.