Introduction to the concept and working principle of Ball Valve

Ball valve, defined in standard GB/T21465-2008 "valve terminology" as a valve driven by the stem and rotated around the axis of the stem. It is mainly used to cut off or connect the medium in the pipeline, and can also be used for the adjustment and control of fluid. There is a strong shear force between the V-shaped ball core of the hard-sealed V-shaped ball valve and the metal valve seat of surfacing cemented carbide. It is especially suitable for media containing fibers, small solid particles and so on. On the pipeline, the multi-pass ball valve can not only flexibly control the confluence, diversion and flow direction of the medium, but also close any channel and connect the other two channels. This type of valve should generally be installed horizontally in the pipeline. 

Ball valve classification: pneumatic ball valve, electric ball valve, manual ball valve. 

working principle. 
The ball valve has the action of rotating 90 degrees, the plug body is a sphere, and there is a circular through hole or passage through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a very small torque to close tightly. Ball valves are most suitable for switching and cutting off valves, but recent developments have designed ball valves for throttling and flow control, such as V-shaped ball valves