SIST EN ISO 22391-3:2010 PDF

Overview

EN ISO 22391-3:2009 (CEN adoption of ISO 22391-3:2009) specifies the characteristics and test requirements for fittings for PE-RT piping systems used in hot and cold water installations in buildings. It covers fittings made of polyethylene of raised temperature resistance (PE-RT) Type I and Type II, and fittings of other materials intended to connect to pipes manufactured to ISO 22391-2. The standard applies to domestic water and heating systems under the design pressures and temperatures defined by ISO 22391-1.

Key topics and requirements

• Scope of application
  • Fittings for conveying water (including potable and non-potable) in buildings and heating systems.
  • Applicable to mechanical fittings, socket-fusion fittings, electrofusion fittings and fittings with incorporated inserts.
• Materials
  • Requirements for plastics fitting materials (PE-RT Types I & II) and metallic components where used.
  • Consideration of influence on water quality for human consumption.
• Geometrical and dimensional requirements
  • Dimensions for sockets used in socket-fusion and electrofusion fittings and dimensions for metallic fittings (referencing ISO 3126).
• Mechanical, physical and chemical properties
  • Mechanical behaviour of fittings made from PE-RT or other plastics.
  • Test parameters for melt mass/volume flow (ISO 1133-1), long-term hydrostatic strength (ISO 9080), and resistance to internal pressure (ISO 1167 series).
• Sealing and jointing
  • Requirements for sealing elements and compatibility with jointing methods described in ISO 22391-5.
• Performance, marking and testing
  • System performance requirements, mandatory marking information, opacity testing (ISO 7686) and specific test methods and parameters to demonstrate fitness for purpose.

Applications and users

Who uses EN ISO 22391-3:2009:

• Manufacturers of PE-RT fittings, electrofusion and socket-fusion components.
• System designers and specifiers for hot and cold water installations and building heating systems.
• Installers and plumbing contractors selecting compliant fittings for domestic and non-domestic water systems.
• Test laboratories and conformity assessment bodies performing mechanical and hydrostatic testing. Practical uses:
• Ensures safe, compatible joints and fittings in PE-RT piping systems.
• Supports product certification, regulatory compliance and technical specifications for building services.

Related standards

• ISO 22391-1 (General), ISO 22391-2 (Pipes), ISO 22391-5 (Joints)
• ISO 1133-1 (MVR/MFR), ISO 1167 (Resistance to internal pressure), ISO 9080 (Long-term hydrostatic strength)
• Other system standards for comparison: ISO 15874 (PP), ISO 15875 (PE-X), ISO 15876 (PB), ISO 15877 (PVC‑C)

Keywords: EN ISO 22391-3, ISO 22391-3:2009, PE-RT fittings, plastics piping systems, hot and cold water installations, electrofusion fittings, socket fusion, mechanical fittings, test methods, building plumbing standards.