The ball of the ball valve is floating. Under the action of the
medium pressure, the ball can produce a certain displacement
and press tightly on the sealing surface of the outlet end to
ensure the sealing of the outlet end. The floating ball valve has
a simple structure and good sealing performance, but the load
of the ball bearing the working medium is all transferred to the
outlet sealing ring, so it is necessary to consider whether the
sealing ring material can withstand the working load of the ball
medium. This structure is widely used in medium and low pressure
ball valves.