... CW617n,CuZn39pb3,CuZn40pb2,CW3770,DZR.Ball: Brass as above,lead free brass,Brass ball.chrome coated,Iron ball chrome coated.Stem : Brass Stem, Brass as aboveSealing : PTFE/ ... C---150°C. 5.Medium:Water,Oil,Gas,etc. 6.Size:1/2'' 7.Surface: Yellow brass color,Nickel plated, Chrome ... processing,assembly,pressure test and packing,etc,all by ourselves.With the advantage of one stop production service,we are ...