The cause of poor sealing of fully welded ball valves has a great influence on the working environment. The most common form of failure of all-welded ball valves is seal failure. This is mainly due to the fact that there are some special materials in the seal structure. These materials have different characteristics and will expand and contract according to temperature or humidity.

Generally, in the process of fully welded ball valves, there are more or less unstable factors, such as temperature, pressure, sealing medium, etc., which are one of the reasons that cause the failure of fully welded ball valve seals.

In the general all-welded ball valve, the ball and the seat have an interference fit, and there will be indirect interference during the movement. And with the pressure of some media, the non-linear behavior in the pipeline will likely damage the sealing of the valve.

And the medium transmission will squeeze the valve seat of the fully welded ball valve, which will deform the seat for a long time. This phenomenon is simply that the seat of the welded ball valve is displaced relative to the valve body, which is also One of the basic reasons leading to the failure of all-welded ball valve seals.