Ball Valve

A ball valve is a quarter-turn (90 degree) rotary motion valve that uses a spherical disk to stop or start the flow of liquid or gas. When the valve is opened, the ball rotates to the point where the hole through the ball aligns with the valve body inlet and outlet. When the valve is closed, the ball is rotated so that the orifice is perpendicular to the flow opening of the valve body and the flow is stopped