Ball valve
QUARTER-TURN VALVE WHICH USES A HOLLOW, PERFORATED AND PIVOTING BALL TO CONTROL FLUID FLOW
Ball Valve; Floating ball valve; Trunnion mounted ball valves
A ball valve is a flow control device which uses a hollow, perforated and pivoting ball to control liquid flowing through it. It is open when the ball's hole is in line with the flow inlet and closed when it is pivoted 90-degrees by the valve handle, blocking the flow.