Dielectric Union Brass Steel Zinc-Plated Galvanized 1/2 in Female NPT 1/2 in Female Solder Insulator Material Polysulfone Gasket Material Buna-N Nut Material Zinc-Plated Galvanized Steel 250 psi Maximum Operating Pressure 33 Degrees to 180 Degrees F 1 7/8 in Overall Length