... 3,Hpb59-3,CW614n,CW617n, CuZn39pb3,,CuZn40pb2,CW3770,DZR. Stem Brass Stem, Brass as above. Sealing PTFE/TEFLON,VITON,O-RINGS. Handle ... handle, Aluminium handle,Plastic handle.Connection Theaded ISO228,BSP,NPT,UNION.3.Technics Forged. Chrome plated. Nickel plated. Galvanized.4. ... Production to ensure the Delivery and Quality!We smelt the brass bars,make the hot forging,machining and CNC processing, ...