A?ball valve?is a form of quarter-turn?valve?which uses a hollow, perforated and pivoting ball to control flow through it. It is open when the ball's hole is in line with the flow and closed when it is pivoted 90-degrees by the valve handle. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed, making for easy visual confirmation of the valve's status.

The strong shear force between the ball core of hard sealing V ball valve and the cemented carbide metal valve seat makes it especially suitable for media as fibers, small solid particles and so on. Multi-port ball valves can not only flexibly control the confluence, split flow and flow direction of the medium, but also can close any port and connect the other two ports. Such valve should be installed horizontally in the pipeline. According to the way of actuation, ball valve is divided into pneumatic ball valve, electric ball valve, and manual ball valve.