Irrigation valve D-021

airstainless steelthreaded

The D-021 combination air valve combines an air & vacuum large orifice and an automatic small orifice in a single body. The valve is specially designed to operate with reclaimed and non-potable water. The combination air valve discharges air (gases) during the filling or charging of the system, admits air into the system during draining and at water column separation and releases accumulated air (gases) from the system while operating under pressure. The valve's unique design guarantees separation of the liquid from the sealing mechanism and assures optimum work conditions.