regulate the flow of the liquid in the sprayer pump. Basically, it is an integral part of the pump that is responsible for controlling the flow in a system. It is simple on-off type valve that is manually driven. It contains a ball like component that rotates inside the valve. There are two positions of the ball in which the valve let the liquid flow and block. These two positions are known as on and off respectively. Our patrons can get this very functional Sprayer Pump On - Off Ball Valve from us at the market leading price range.