... , pn20, thread as request, rich OEM experience. brass gate valve PN20 /brass water valves 1. Material: C3771, C37700N, CW614N ... of Copper Valves, Gas Valves, Gate Valves, Ball Valve, Radiator Valve, Stop Valve, Check Valve, Bibcock, Angle Valves, Brass Fitting, Copper Fitting ... Light Industry Quality Supervision and Testing Center of Building Hardware Valve, DN15 2010/06/10 Test Report Ningbo Academy of ...