ISO 15875-1:2003/Amd 1:2007

Overview

ISO 15875-1:2003/Amd 1:2007 is an important amendment to the international standard governing plastics piping systems made from crosslinked polyethylene (PE-X) for hot and cold water installations. This amendment, published by ISO in 2007, provides clarifications and updates to the general requirements of these piping systems, particularly focusing on pipes incorporating a barrier layer.

The amendment addresses the dimensional requirements and definitions related to barrier pipes, helping to harmonize standards across different countries. It supports manufacturers, engineers, and regulatory bodies in ensuring safer, more reliable, and high-performance plastics piping systems for water supply installations.

Key Topics

• Crosslinked Polyethylene (PE-X) Piping Systems
  The amendment deals specifically with PE-X pipes widely used for residential and commercial hot and cold water installations due to their durability, flexibility, and resistance to temperature and pressure changes.

• Pipes with Barrier Layer
  Defines pipes that have a thin barrier layer-generally no thicker than 0.4 mm-intended to reduce gas diffusion and light transmission through the pipe wall. This barrier improves the pipe's performance without altering the base polymer's design stress requirements.

• Dimensional Clarifications
  The amendment clarifies how barrier layers affect the dimensional requirements of PE-X pipes, aiming for consistency in measurement practices globally. It distinguishes barrier pipes from multilayer pipes, which have thicker outer layers serving multiple functions.

• Common Procedure for Testing and Design
  Establishes guidelines to unify testing methods and design procedures for PE-X pipes with barrier layers, supporting international trade and regulatory compliance.

Applications

ISO 15875-1:2003/Amd 1:2007 is essential for:

• Building Services and Plumbing
  Ensures that crosslinked polyethylene piping systems used for hot and cold water supplies in residential, commercial, and industrial buildings meet strict quality and safety standards.

• Manufacturing and Quality Assurance
  Helps manufacturers design pipes with barrier layers meeting consistent global dimensional and performance criteria, reducing disputes and enhancing product acceptance.

• Regulatory Compliance and Certification
  Assists certification bodies and regulation authorities in verifying that PE-X piping installations comply with international practices, particularly in regions where barrier pipes are commonly employed.

• System Design for Gas and Light Diffusion Control
  Supports engineers in selecting the right piping systems where gas diffusion and light transmission could affect system longevity and water quality.

Related Standards

For comprehensive understanding and system integration, the following ISO standards are closely related:

• ISO 15875-2:2003 & Amendment 1:2007 – Detailed requirements on pipe dimensions and barriers.
• ISO 21003 Series (to be published): Multilayer Piping Systems
  • ISO 21003-1: General principles for multilayer systems.
  • ISO 21003-2: Pipes for hot and cold water installations.
  • ISO 21003-3: Fittings for multilayer systems.
  • ISO 21003-5: Assessment of fitness for purpose of multilayer piping systems.

Understanding these additional standards is valuable when working with multilayer pipes, which have barrier layers thicker than 0.4 mm and serve multiple functional purposes beyond gas diffusion resistance.

Keywords: ISO 15875-1 Amendment 1, crosslinked polyethylene PE-X piping, plastics piping systems, hot and cold water installations, barrier layer pipes, dimensional requirements, multilayer piping systems, plastics pipe standards, water supply piping, PE-X pipe testing, international piping standards.