The Ontario Building Code | Screwed Cast Iron Water Fittings
7.2.6.5. Screwed Cast Iron water Fittings
(1) Screwed cast iron water fittings shall conform to ASME B16.4, "Gray Iron Threaded Fittings: Classes 125 and 250".
(2) Screwed cast iron water fittings used in a water system shall be mortarp://thehandyforce.com/exterior/" title ="Exterior home repairs in Toronto">cement-mortar lined or galvanized.
(3) Screwed cast iron water fittings shall not be used in a drainage system.
In Plain Language
Screwed cast iron water fittings must conform to the referenced ASME standard for gray iron threaded fittings, ensuring consistent thread compatibility and pressure ratings.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.