1.Round socket end pvc ball valve 2.1/2-6",oneside handle 3.ANIS,JIS,BS,DIN 4.To Syria,India, ... ball valve is a valve that opens by turning a handle/Gear attached to a ball inside the valve. The ball ... the ends of the valve, and flow is blocked. The handle position lets you "see" the valve's position.Ball valves ... to you and compensate the part of loss to you .: Round socket end pvc ball valve(White)