Hex Bushing Body Material Galvanized Malleable Iron Pipe Size 1 in x 1/4 In. Connection Type MNPT x FNPT Max Pressure 300 psi @ 150 Degrees F WOG Saturated Steam Pressure 150 psi Class 150 Standards ASTM A-197 ASTM A47 ASME B16.3 and B16.4 UL Listed FM Approved NSF-61 and AB1953 Listed