ISO 15877-2:2009/Amd 1:2010

Overview

ISO 15877-2:2009/Amd 1:2010 is an important amendment to the international standard governing plastics piping systems for hot and cold water installations made from chlorinated poly(vinyl chloride) (PVC-C). This amendment specifically focuses on Part 2: Pipes, adding critical updates to improve the reliability and applicability of PVC-C piping systems in various service conditions, especially for low-temperature heating applications.

Developed collaboratively by ISO and the European Committee for Standardization (CEN), this amendment extends the original 2009 standard by introducing new pipe classifications and design pressure ratings to reflect evolving industry needs and long-term usage insights.

Key Topics

• PVC-C Type I Pipes: Amendment 1 adds Class 4 piping, expanding the use of PVC-C pipes to conditions involving design pressures of 4 bar and 6 bar. This classification aligns with international guidelines defined by ISO 10508.

• Design Pressure and S-values: The amendment revises Table 1 to provide updated S-values for PVC-C Type I pipes, enhancing design accuracy for different application classes. These S-values are essential for engineers calculating pipe wall thickness and ensuring pressure resistance under varying operational conditions.

• Application Classes:

  • Class 1 and Class 2 support pressures from 4 up to 10 bar.
  • Newly introduced Class 4 supports pressures of 4 bar and 6 bar, primarily for low-temperature heating systems where PVC-C pipes have proven reliable over decades.

• Design Stress Values: Table A.2 has been updated to reflect the design stress values for PVC-C Type I pipes, enabling better material stress assessment for longer lifespan and safety under service conditions.

• Long-Term Service Conditions: The amendment incorporates performance data from pipes successfully used for over 30 years, emphasizing durability and safety in cold water and heating applications at specified pressures and temperatures.

Applications

The amendment enhances the usability of PVC-C piping systems in a variety of practical applications, including:

• Hot and Cold Water Installations: Reliable transport of potable water under varying temperatures and pressures, suitable for residential, commercial, and industrial water supply systems.

• Low-Temperature Heating Systems: Thanks to the introduction of Class 4, PVC-C pipes are now confirmed for use in heating applications with pressures up to 6 bar, ideal for underfloor heating and other low-temperature radiator circuits.

• Building and Construction: Facilitating safe and standardized PVC-C pipe installations in plumbing and heating infrastructure, ensuring compliance with rigorous international safety requirements.

• Industrial Applications: Suitable for fluid transport in processes where chlorinated poly(vinyl chloride) properties offer corrosion resistance and mechanical strength.

Related Standards

• ISO 15877-1: General requirements for PVC-C piping systems for hot and cold water installations, providing foundational guidelines for material properties and system performance.
• ISO 10508: Classification of piping products and guidance on their service conditions, which informs the new Class 4 application added in this amendment.
• ISO/IEC Directives, Part 2: Framework for drafting international standards, under which ISO 15877-2 and its amendments are developed.
• CEN/TC 155: European technical committee contributing to plastics piping standards harmonized with ISO guidelines.

Practical Value

ISO 15877-2:2009/Amd 1:2010 ensures that PVC-C piping systems meet the latest technical and safety requirements for hot and cold water applications, providing:

• Enhanced durability with proven long-term performance data.
• Clear guidelines for design pressures, improving installation safety and efficiency.
• Expanded application scope to include low-temperature heating systems.
• Support for engineers and designers in selecting appropriate pipe classes and verifying compliance.

By adhering to this standard, manufacturers and installers guarantee safer, more reliable piping infrastructures that align with international quality benchmarks, leading to improved system longevity and reduced maintenance costs.

For more information, visit the ISO website and consult the full text of ISO 15877-2:2009/Amd 1:2010.