Dielectric Union Brass Steel Zinc-Plated Galvanized 1/2 in Male NPT 1/2 in Male 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 2 5/8 in Overall Length