... Zinc handle,Stainless steel handle, Aluminium handle,Plastic handle. Nut Brass nut,Steel nut,Iron nut,all Zinc plated. Connection Theaded ISO228,BSP,NPT,UNION ... plated. Galvanized. 4.Temperature: Normal or -20°C---150°C. 5.Medium: Water,Oil,Gas,etc. 6.Size: 1/2''×3 ...