Adapter, Brass, Class Class 150, 3/8 in, Female, NPTF, 18, 3/8 in, Male, NPTF, 18 Brass Pipe Fittings • Max. pressure: 1200 psi, except Domestic Brass fittings Temp. range: -65 Degrees to 250 Degrees FNPT connections. For use in water, oil, natural gas, and steam applications.Meet SAE, ASME, and ASA standards.