The ball valve opening and closing member (ball) is driven by the stem and rotates around the ball valve shaft. Can also be used for fluid regulation and control, which is hard sealed V-ball valve V-core and surfacing cemented carbide metal seat shear force is strong, especially suitable for fiber, micro solid particles and other media. Multi-way ball valve can not only flexibly control the media confluence, shunt and flow switch, but also can close any channel to connect the other two channels. This valve should normally be installed horizontally in the pipe. Ball valve according to the driving mode is divided into pneumatic ball valve, electric ball valve and manual ball valve.