Dielectric Union, Brass, Malleable Iron, 1 1/2 in, Female, NPT, 1 1/2 in, Female, NPT, Insulator Material Polysulfone, Gasket Material Buna-N, Nut Material Zinc-Plated Galvanized Malleable Iron, 250 psi Maximum Operating Pressure, 33 Degrees to 180...