Floating ball valve structure is simple, good sealing, but the ball load all passed to the export seal, we should consider whether the sealing ring material can withstand the work of the ball media load. This structure is widely used in medium and low pressure ball valves.

For the fixed ball valve, ball of the ball is fixed, fixed ball valve has a floating seat, the valve seat has movement, so that the seal on the ball to ensure that the seal. Suitable for high pressure and large diameter valves.

For the flexible ball valve, the ball of the ball is elastic. Spherical and valve seat seals are made of metal materials, sealing pressure is very large, relying on the pressure of the medium itself has been less than the requirements of the seal. This valve is suitable for high temperature and high pressure medium.