The Ontario Building Code | Supply and Waste Fittings
7.2.10.6. Supply and Waste Fittings
(1) Supply fittings shall conform to ASME A112.18.1 / CSA B125.1, "Plumbing Supply Fittings" or CSA B125.3, "Plumbing Fittings".
(2) Waste fittings shall conform to ASME A112.18.2 / CSA B125.2, "Plumbing Waste Fittings".
In Plain Language
Supply fittings must conform to the referenced ASME/CSA plumbing supply fittings standard, and waste fittings have their own corresponding material and performance requirements.
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.