BOILER DRAIN BALL VALVE – Art 519G: heavy type, with hose union and lock nutrastelli2022-06-09T06:25:37+00:00 Project Description BOILER DRAIN BALL VALVE – Art 519G1/2″ Boiler drain ball valve, heavy type, with hose union and lock nut, nickel plated download technical data sheet Art Ø PN 519G015 1/2″ 10 – 100