Elasticity of ball valve

Elasticity of ball valve

The ball of the ball valve is elastic. The ball and valve seat sealing ring are made of metal materials, and the sealing pressure is very large. The pressure of the medium itself can not meet the requirements of sealing, so external force must be applied. This valve is suitable for high temperature and high pressure medium.

The elastic sphere has an elastic groove at the lower end of the inner wall of the sphere to obtain elasticity. When the channel is closed, the wedge head of the valve stem is used to make the ball expand and compress with the valve seat to achieve sealing. Before turning the ball, loosen the wedge head, and the ball will return to its original shape, so that there is a small gap between the ball and the valve seat, which can reduce the friction and operating torque of the sealing surface.