ISO 15877-5:2009

Overview

ISO 15877-5:2009 - "Plastics piping systems for hot and cold water installations - Chlorinated poly(vinyl chloride) (PVC‑C) - Part 5: Fitness for purpose of the system" defines the fitness-for-purpose requirements and test parameters for PVC‑C piping systems used in domestic hot and cold water and heating installations. The standard applies to PVC‑C pipes, fittings, joints and interfaces with other plastics or non‑plastic components under the design pressures and temperatures of the applicable application classes. It also clarifies limits - it does not apply when design or malfunction temperatures exceed values given in ISO 15877‑1:2009.

Key topics and technical requirements

• Scope and applicability: Covers PVC‑C systems for conveyance of water (potable or non‑potable) and heating systems, aligned with design pressure and application classes from ISO 15877‑1.
• Test methods and parameters: Specifies the test parameters to be used with referenced test methods (ISO 1167‑1 and several EN methods). Tests include:
  • Internal (hydrostatic) pressure testing for solvent‑cement and mechanical joints, with defined test pressures derived from material stresses, design stress and class of service.
  • Pull‑out (end‑load) testing for mechanical joints (EN 712).
  • Thermal cycling to evaluate resistance to temperature fluctuations (EN 12293).
  • Pressure cycling to assess joint durability under repeated pressure changes (EN 12295).
  • Leaktightness under vacuum where applicable (EN 12294).
• Assembly and test preparation: Requires tests be performed on assemblies built per manufacturer instructions (e.g., solvent‑cement setting times and end‑cap arrangements to transfer axial forces).
• Acceptance criteria: Joints and system assemblies shall not leak and shall meet performance criteria given for each test type.

Practical applications and users

Who uses ISO 15877‑5:2009:

• Manufacturers of PVC‑C pipes, fittings and jointing systems for product design, type‑testing and conformity assessment.
• Test laboratories and certification bodies applying defined test parameters and procedures.
• Specifiers, consulting engineers and building services designers selecting piping materials for domestic hot/cold water and heating systems.
• Installers and contractors who need to follow validated assembly and jointing practices to ensure system fitness for purpose. Practical benefits include consistent performance verification, reduced installation failures, and harmonized criteria for product acceptance.

Related standards

• ISO 15877 series: Part 1 (General), Part 2 (Pipes), Part 3 (Fittings), Part 7 (Conformity guidance)
• ISO 1167‑1 (hydrostatic pressure testing)
• EN 712, EN 12293, EN 12294, EN 12295 (joint and system test methods)
• Other system standards for comparison: ISO 15874 (PP), ISO 15875 (PE‑X), ISO 15876 (PB)

Keywords: ISO 15877-5:2009, PVC‑C piping, fitness for purpose, hot and cold water installations, hydrostatic test, thermal cycling, pressure cycling, solvent cement joints, mechanical joints.