BOILER DRAIN BALL VALVE – Art 519S: with hose union and lock nutrastelli2022-05-24T07:47:36+00:00 Project Description BOILER DRAIN BALL VALVE – Art 519S1/2″ Boiler drain ball valve, brass mat finishing DOWNLOAD TECHNICAL DATA SHEET Art Ø PN 519S015 1/2″ 10 – 100