The sealing structure of high-temperature ball valve is an important factor affecting its sealing performance. When the interaction force between the valve seat and the ball changes under the action of temperature and pressure, it is one of the important measures to ensure its sealing performance to adopt appropriate sealing structure and structure size to compensate for the change.

The high-temperature ball valve has the features of ball valve seat hardening and mechanical self lubrication function technology, preventing the valve from expanding and dying under high temperature, excellent sealing performance, complete fire-proof structural design, natural anti-static structural design, double blocking and relief functions.