1. Make sure that the azimuth pipeline of the ball valve device is in the coaxial direction. The two flanges on the pipeline should be parallel. It is recognized that the pipeline can accept the component of the ball valve itself. If the pipeline is found to be unable to accept the component of the ball valve, the pipeline should be equipped with corresponding supports before the installation.
2. Acknowledge whether there are impurities, welding slag, etc. in the pipeline, and it is necessary to purge the pipeline clean.
3. Check the nameplate of the ball valve, and perform full-open and full-close operations on the ball valve several times, admit that the valve can operate normally, and then check all the details of the valve thoroughly to ensure that the valve is intact.
4. Remove the maintenance caps at both ends of the valve, check whether the valve body is clean, and clean the inner cavity of the valve body. Since the sealing surface of the ball valve is spherical, even small debris may cause damage to the sealing surface.
