The internal structure is composed of different operating ball valves. The difference of this part will directly determine the use function of this equipment, and the selection of materials and installation methods in this part will also directly affect the internal pressure bearing range of pneumatic ball valves, as well as the temperature vacancy. The maximum and minimum values are completely different, allowing maximum pressure operation, At the same time, it can also ensure a normal operation under the minimum pressure.

Then we need to pay attention to the following points during the repair of electric ball valve.
1. When the electric ball valve is closed, there is still pressurized fluid inside its valve body. 　　
2. Before the repair of the ball valve, it is necessary to relieve its pipeline pressure and ensure that it is in the open state. For the electric ball valve, it is necessary to disconnect its power supply, while for the pneumatic ball valve, it is necessary to disconnect its air supply in advance. Together, it is also necessary to separate its actuator from its support. 　　
3. Together, for the sake of safety, the upstream and downstream pipeline pressure of the electric ball valve must be admitted to have been removed before the splitting and disassembling operation of the electric ball valve. 　　
4. It is also necessary to use grease to lubricate it during repair. The grease generally selected should be compatible with the metal materials, rubber parts, plastic parts and operating media of the ball valve. For example, when the working medium is certain gas, we can choose special 221 grease. During the lubrication process, a thin layer of lubrication can be applied on the surface of the seal device groove, rubber seal, valve stem sealing surface and conflict surface. It should also be noted that during the installation of the electric ball valve, it is not allowed to have any metal debris, fiber, grease (except for the specified application), dust and other impurities, foreign matter, etc., contaminate, adhere or stay on the surface of its parts or enter its interior.