Homewerks VBD-CON-F3B Boiler Drain, Heavy Duty Contractor Grade, Male Thread and Solder, Brass, 1/2-Inch 3/4-Inch hose thread outlet Heavy-duty construction 1/2-Inch male thread or 1/2-Inch solder Meets ASME A112.18.1 / CSA B125 Standards Meets ANSI / NSF 61 low lead requirements