Features For low-pressure plumbing applications including air, water, natural gas, and steam. Galvanized to resist rust and corrosion. Pipe Fitting Material / Malleable Iron Finish/Coating / Zinc Plated Class / Class 150 Fitting Side A Nominal Pipe Size / 1/4 in Fitting Side A Gender / Female Fitting Side A Type / NPT Fitting Side A Pipe Threading / 18 Fitting Side B Nominal Pipe Size / 1/4 in Fitting Side B Gender / Female Fitting Side B Type / NPT Fitting Side B Pipe Threading / 18 Includes Pre-Applied Thread Sealant / No Includes Seal / No Color / White Standards / ASME B16.39, ASTM A197, FM Approved, IAPMO, UL Listed