Overview
EN ISO 15877-2:2009/A2:2020 is Amendment 2 to ISO 15877-2 (adopted by CEN as EN ISO 15877-2). It updates the requirements for PVC‑C (chlorinated poly(vinyl chloride)) pipes used in plastics piping systems for hot and cold water installations. The amendment (approved December 2020) revises dimensional tables, wall‑thickness tolerances and adds clarifying notes for temperature testing (Vicat softening temperature).
Key topics and requirements
- Scope: Pipes for hot and cold water systems manufactured from PVC‑C (Part 2: Pipes). This amendment modifies the original 2009 standard without changing its status.
- Pipe sizes and wall thicknesses: Table revisions specify nominal outside diameters (DN/OD) from 12 mm to 250 mm and list corresponding wall thicknesses for pipe series S 6,3, S 5 and S 4. Sizes conform to ISO 4065.
- Tolerances on wall thickness: Updated tolerances are provided in a new table where the allowable deviation depends on the minimum wall thickness. Tolerances comply with Grade W of ISO 11922‑1.
- Temperature testing (VST): A footnote was added to Tables 10 and 11 clarifying that test samples may be annealed prior to Vicat softening temperature (VST) testing at conditions recommended by the manufacturer.
- Standards governance: The amendment was prepared by ISO/TC 138 in collaboration with CEN/TC 155 and is intended for national adoption by CEN members.
Practical applications
This amendment is relevant for professionals involved in the specification, manufacture, testing and installation of PVC‑C piping for potable and service water systems:
- Pipe manufacturers - implement revised dimensional and tolerance requirements in production and quality control.
- Product designers and system engineers - use updated diameters and wall‑thickness classes when specifying piping for pressure and temperature conditions.
- Testing laboratories - apply the annealing note and revised tolerances during conformity and VST testing.
- Specifiers, procurement teams and compliance officers - ensure supplied PVC‑C products meet EN ISO 15877‑2:A2 requirements for regulatory and contractual compliance.
Related standards
- ISO 15877 series (other parts covering fittings, joints and system requirements)
- ISO 4065 - pipe dimensioning (referenced for size conformity)
- ISO 11922‑1 - tolerance grades (Grade W referenced for wall‑thickness tolerances)
Keywords: EN ISO 15877‑2:2009/A2:2020, PVC‑C pipes, plastics piping systems, hot and cold water, pipe diameters, wall thickness tolerances, Vicat softening temperature, ISO 4065, ISO 11922‑1, CEN amendment.