Overview
SIST EN ISO 22391-5:2010 is a European standard specifying the fitness for purpose of plastics piping systems made from polyethylene of raised temperature resistance (PE-RT) Type I and Type II. The standard is intended for piping used in hot and cold water installations within buildings, including both domestic water supply and heating systems. It covers the necessary performance requirements, test parameters, and associated methods to ensure the reliability and durability of PE-RT piping systems under defined pressure and temperature conditions.
Complying with this ISO standard is essential for manufacturers, installers, and specifiers of piping systems, as it ensures that products are suitable for use in modern building water supply and heating applications.
Key Topics
- Scope and Application: Defines performance requirements for PE-RT piping systems intended for both hot and cold water distribution in buildings.
- System Components: Covers PE-RT pipes, fittings, their joints, and joints to other plastics or non-plastics materials.
- Fitness for Purpose: Outlines factors such as durability, leak-tightness, and resistance to physical and thermal stresses.
- Test Methods: Specifies test procedures including:
- Internal pressure testing
- Bending and pull-out tests
- Thermal cycling
- Pressure cycling
- Leak tightness under vacuum testing
- Compatibility: Specifies requirements in conjunction with other parts of ISO 22391 for an integrated system approach.
- Design Considerations: Addresses service conditions, classes of application, design pressures, and pipe dimension classes.
Applications
Plastics piping systems based on PE-RT offer several practical advantages in construction and engineering:
- Hot and Cold Water Distribution: Ensures safe conveyance of potable and non-potable water throughout residential, commercial, and industrial buildings.
- Heating Systems: Suitable for underfloor heating and radiator connections due to the material’s resistance to elevated temperatures.
- Renovation and New Builds: Applicable for both retrofit projects and new constructions, thanks to flexible installation options and proven longevity.
- Joint Integrity: The standard ensures consistent system performance, even at joint interfaces between PE-RT and non-PE-RT materials.
- Compliance: Demonstrates conformity to European and international quality requirements, simplifying approvals and acceptance in regulated markets.
Related Standards
For optimal system design and installation, SIST EN ISO 22391-5:2010 references and complements several other standards, including:
- ISO 22391-1 - General requirements for PE-RT piping systems
- ISO 22391-2 - Specifications for PE-RT pipes
- ISO 22391-3 - Specifications for fittings
- EN 712 - Test method for resistance to pull-out
- EN 713 - Test method for leak tightness under bending
- EN 12293 - Thermal cycling test for pipes and fittings
- EN 12294 - Vacuum leak tightness test
- EN 12295 - Pressure cycling resistance test
These interlinked standards provide a comprehensive approach to the assessment, installation, and maintenance of plastics piping systems for building water services, helping ensure consistent quality, safety, and performance across the entire system lifecycle.
Keywords: PE-RT piping, hot water installations, cold water installations, plastics piping systems, fitness for purpose, leak tightness, ISO 22391, building water supply standards, heating systems, PE-RT pipes and fittings.