Polypropylene (PP-R & PP-RCT) pipe and fittings for pressure applications
This is the eighth edition of CSA B137.11, Polypropylene (PP-R & PP-RCT) pipe and fittings for pressure applications. It supersedes the previous editions published in 2017, 2013, 2009, 2005, 2002, 1999, and 1993.
While earlier editions of this Standard were published as part of the CSA B137 Series, Thermoplastic pressure piping compendium, the seventh 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 the following:
a) addition of polypropylene random copolymer with modified crystallinity and temperature resistance (PP-RCT) materials;
b) revision of scope in Clauses 1.1 and 1.2;
c) revision of material properties in Clause 4.2.1;
d) revision of long-term hydrostatic strength requirements in Clause 4.2.3;
e) revision of Clauses 5.5 and 7.2 to longitudinal reversion;
f) revision of impact resistance requirements in Clause 5.7 and removal of Clause 7.3;
g) revision of marking requirements in Clause 8;
h) addition of Table 2 50-year service life model; and
i) revision of dimensions in Table 3.
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 two types of polypropylene (PP) pipe and fittings – polypropylene random copolymer (PP-R) and polypropylene random copolymer with modified crystallinity and temperature resistance (PP-RCT) intended for use in pressure applications such as hot and cold potable water distribution systems, process piping, reclaimed/recycled water systems, water service, hydronic heating and cooling, and geothermal systems. Piping system components covered by this Standard are classified based on dimension ratio in sizes NPS-3/8 to NPS-28, and are joined using socket-type heat-fusion joints, saddle welding joints (fusion outlet), electrofusion joints, and butt fusion.
Piping covered by this Standard with minimum hydrostatic pressure ratings of 1105 kPa at 23 °C and 690 kPa at 82 °C are intended for use in plumbing applications. Pipes with different dimension ratios (DRs) can have higher or lower pressure ratings for other applications.
This Standard specifies requirements for materials, dimensions, hydrostatic sustained pressure performance, longitudinal reversion, apparent tensile strength, oxidative resistance, and marking.
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.