A floating ball valve: valve ball is floating in the medium under pressure, the ball valve can create some displacement and pressed in the export facet with the sealing surface to guarantee the export aspect seal. The framework of pneumatic butterfly valves is simple, great sealing, but the media sphere to bear the load of function to pass all the export ring, so to think about the ring materials can withstand the sphere of media function load. This structure is broadly utilised in low-pressure ball valve. Secondly, fixed ball valve: ball valve is fixed, the pressure doesn't create following the movement. Are fixed with a floating ball valve seat, through the media stress, the floating ball valve seat have moved to seal pressed around the sphere, as a way to guarantee sealing. Typically using the ball in the higher and decrease shaft with bearings, the operating torque, suitable for substantial pressure and huge diameter from the floating ball valve. To be able to decrease the floating ball valve working torque and improve the reliability in the seal, valve seal has emerged in recent years, each within the sealing floor pressure injection particular lubricant, to form a layer of film, which enhances the seal, and decrease running torque, far more suitable for large-diameter high-pressure valve. Thirdly, the elasticity of the floating ball valve:floating ball valve is flexible. Ball and seat ring are metal supplies, sealing strain than the large, rely upon the media itself cannot seal pressure has reached the requirements to be imposed by exterior forces. The floating ball valve for substantial temperature and strain medium. Elastic sphere will be the sphere wall within the bottom of a flexible open up slot, and obtain flexibility. Once the closed channel, the wedge-shaped head having a stem up to open up the ball using the valve seat to seal compression. Release the ball before turning the wedge-shaped head, along with restoration of the authentic prototype from the sphere, the spheres having a tiny gap among the valve seat, sealing floor can help to eliminate the friction and running torque.Far more Info Click : valves manufacturers