This is the thirteenth edition of CSA B137.3, Rigid polyvinylchloride (PVC) pipe and fittings for pressure applications. It supersedes the previous editions published in 2017, 2013, 2009, 2005, 2002, 1999, 1993, 1990, 1986, 1981, 1972, and 1970.
While earlier editions of this Standard were published as part of the CSA B137 Series, Thermoplastic pressure piping compendium, the twelfth edition was reissued as a stand-alone Standard in January 2019. The compendium format has been discontinued.
This Standard is to be used with the 2020 edition of CSA B137.0, which provides requirements and test methods that are common to some or all of the Standards of the CSA B137 series.
The major changes in this new edition are
a) addition of Note 2) to Clause 1.1 for the exclusion of venting of combustion gas applications;
b) clarification of impact resistance for pipe sizes NPS-14 or larger in Clause 5.7.3;
c) correction of pressure rating for DR 25 in Table 10; and
d) correction of pressure rating for DR 25 and 14 in Table 16.
This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
This Standard covers rigid polyvinylchloride (PVC) pipe and fittings intended for use in pressure applications such as water mains, water service piping, and process piping. The fittings covered by this Standard include moulded, solvent-cemented, gasketed, or threaded fittings, and fittings that have been fabricated for use with any joining method.
1) Where PVC pipe and fittings are to be used in non-water applications, the manufacturer should be consulted.
2) 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.
This Standard specifies requirements for materials, quality of work, dimensions, solvent cement, and markings for pipe and fittings. Requirements for hydrostatic sustained pressure, extrusion, impact resistance, and quality are also specified for pipe.
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.