Nozzle Check Valve 1.Size:DN50-DN350 2.Pressure:1.0 ... .S,S.S Silence Check Valve/Non slam check valve Nozzle Type Check Valve Size: DN50~350, 1.0~2.5Mpa ... .Silence Check Valve/Non slam check valve.Nozzle Type Check Valve Product introduction Silence check valve consists of ... any noise. It is widely used in feeding/draining system, fire protection and heat supplying system, and it is installed at ...