... CuZn39pb3,CuZn40pb2,C3770,DZR. Ball Brass as above,lead free brass,Brass ball. chrome coated,Iron ball chrome coated. Stem Brass Stem, Brass as above. Sealing PTFE/ ... nut,Iron nut,all Zinc plated.Connection Theaded ISO228,BSP,NPT,UNION.3.Technics: Forged. Chrome plated. Nickel plated. ... ,assembly,pressure test and packing,etc,all by ourselves.With the advantage of one stop production service,we are ...