Mueller 102-704 102-704HC Heavy Duty Boiler Drain 3/4" MPT (1/2"FPT) x 3/4" hose thread For cold water, oil, or air up to 125 PSI Large flow capacity brass body with 45-Degree outlet Neoprene seal disc - Cast iron handle Complies with ANSI B2.1 and ANSI B2.4