... .Ball: Brass as above,lead free brass,Brass ball.chrome coated,Iron ball chrome coated.Stem : Brass Stem, Brass as aboveSealing : PTFE/TEFLON,VITON ... plated. Connection : Theaded ISO228,BSP,NPT,UNION.3.Technics: Forged, Chrome plated, Nickel plated, Galvanized. 4.Temperature:Normal or-20°C ... .Size:1/2'' 7.Surface: Yellow brass color,Nickel plated, Chrome plated 8.Standard:GB,DIN,ANSI,EN,BS,UIN,JIS ...