Overview
EN ISO 15874-2:2013 - Plastics piping systems for hot and cold water installations - Polypropylene (PP) - Part 2: Pipes - specifies requirements for polypropylene pipes used inside buildings for hot and cold water supply and heating systems. The standard covers PP pipe materials (including pipes with or without barrier layers), a range of application classes, design pressures and pipe dimension classes, and the test parameters for the referenced test methods. It is intended to be used together with the other parts of ISO 15874 that address fittings, system fitness-for-purpose and conformity assessment.
Key topics and technical requirements
- Scope and application classes: Defines service conditions and operating temperatures/pressures appropriate to the intended class of application (domestic water and heating systems).
- Material requirements: Pipe material must comply with ISO 15874-1 and be evaluated for long-term hydrostatic strength (σ-values) using ISO 9080 or equivalent methods.
- Mechanical, physical and geometrical characteristics: Specifies requirements for appearance, opacity, dimensions, wall thickness and mechanical performance relevant to piping use.
- Test methods and parameters: Normative references include ISO standards such as ISO 1133 (MFR), ISO 1167 (resistance to internal pressure), ISO 3126 (dimensions), ISO 9080 (long‑term hydrostatic strength), ISO 2505 (longitudinal reversion) and ISO 9854 (impact strength). The standard sets test conditions and evaluation criteria rather than prescribing installation practice.
- Marking and traceability: Minimum marking requirements ensure identification of material, dimensions and relevant standard references.
- Compatibility: In conjunction with other ISO 15874 parts, it applies to joints between PP and other plastics or non-plastic components.
- Regulatory note: The standard does not override national regulations regarding water quality; users must comply with local rules for water intended for human consumption.
Practical applications
- Design and specification of PP piping systems for residential, commercial and light‑industrial buildings (hot and cold potable water, central heating circuits).
- Product development and quality control for PP pipe manufacturers (material selection, dimensional and mechanical testing).
- Type testing and conformity assessment by test laboratories and certification bodies.
- Specification reference for consulting engineers, plumbing designers, contractors and purchasing departments when selecting materials and pipe classes for building services.
Who should use this standard
- Pipe and fittings manufacturers, product designers
- Test laboratories and conformity assessors
- Plumbing and HVAC engineers and system specifiers
- Building owners, installers and regulators needing compliance references
Related standards
- ISO 15874-1 (General), ISO 15874-3 (Fittings), ISO 15874-5 (Fitness for purpose), ISO/TS 15874-7 (Conformity guidance)
- Other piping material standards: ISO 15875 (PE-X), ISO 15876 (PB), ISO 15877 (PVC‑C), ISO 22391 (PE‑RT)
- Normative test standards cited within the document (ISO 1167, ISO 9080, ISO 3126, ISO 1133, etc.)
Keywords: EN ISO 15874-2:2013, polypropylene pipes, PP piping systems, hot and cold water installations, application classes, design pressures, pipe dimension classes, testing.