Screwed Malleable Iron Water Fittings
(1) Screwed malleable iron water fittings shall conform to ASME B16.3, “Malleable Iron Threaded Fittings: Classes 150 and 300”.
(2) Screwed malleable iron water fittings used in a water system shall be cement-mortar lined or galvanized.
(3) Screwed malleable iron water fittings shall not be used in a drainage system.
Article 7.2.6.6. Ontario Regulation 332/12 Building Code, O. Reg. 332/12: BUILDING CODE (ontario.ca) © Queen’s Printer for Ontario, 2021.