Draft Details

Review start date:Jan 7, 2020
Review end date:Mar 7, 2020
Contact email:sue.ruscetta(at)csagroup.org
Draft Scope/Description:



This Standard specifies requirements for polyvinylchloride (PVC) and chlorinated polyvinylchloride (CPVC) drain, waste, and vent (DWV) pipe, pipe fittings, and accessories such as factory-assembled expansion joints, closet flanges, backwater valves, and fire-stop fittings*.

* The fire stop is for use in fire separations only. It can be subject to code requirements not covered in this Standard. See the definition of “Fire-stop fitting” in Clause 3.1 of CSA B181.0.


1) Recommended installation practices for PVC-DWV pipe are specified in Annex A. Following these practices will help ensure proper installation and optimum service life.

2) The maximum pressure used to test DWV installations should be 100 kPa (see Clause A.5.2).

3) This Standard does not specify requirements for venting of combustion gases. In Canada, ULC S636 specifies testing and marking requirements for pipe, fittings and accessories intended for venting of combustion gases. In the United States, UL 1738 specifies testing and marking requirements for pipe, fittings, and accessories intended for venting of combustion gases.


In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

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