1/2 x 3/4 in. (15x20mm)
Description:
Series HB-1 Brass Hose Bibb Boiler Drains are for use in commercial and residential hydronic heating systems. It consists of a brass body construction with 1/2 in. I.P. male x 3/4 in. hose thread connection, or 1/2 in. Nom. copper x 3/4 in. hose thread connection, hose coupling, integral vacuum breaker, built-in backflow protection, and cast iron handwheel. Series HB-1 is drainable in cold weather and meets ASSE Standard 1011.