The Ontario Building Code | Mechanical Couplings
7.2.10.4. Mechanical Couplings
(1) Groove and shoulder type mechanical pipe couplings shall conform to CSA B242, "Groove and Shoulder Type Mechanical pipe Couplings".
(2) Mechanical Couplings for DWV and Sewer pipe shall be certified to CAN/CSA-B602, "Mechanical Couplings for Drain, Waste, and vent pipe and Sewer Pipe".
In Plain Language
Groove and shoulder type mechanical pipe couplings must conform to CSA B242, and mechanical couplings used for DWV (drain-waste-vent) and similar systems have their own additional specific 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.