WARD MFG Brass to Iron Seat Union, 3/8 in x 3/8 in Connection, FNPT x FNPT Connection, Material Construction: Malleable Iron, Finish: Galvanized, 1.26 in Hex, Pressure Class: 150 lb, 300 psi Pressure, Dimension Standards: ASME B16.1, -20 to 150 deg F