EN ISO 22391-3:2009/A2:2021

Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) - Part 3: Fittings - Amendment 2 (ISO 22391-3:2009/Amd 2:2021)

Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation - Polyethylen erhöhter Temperaturbeständigkeit (PE-RT) - Teil 3: Formstücke - Änderung 2 (ISO 22391-3:2009/Amd 2:2021)

No scope available

Systèmes de canalisations en plastique pour les installations d'eau chaude et froide - Polyéthylène de meilleure résistance à la température (PE-RT) - Partie 3: Raccords - Amendement 2 (ISO 22391-3:2009/Amd 2:2021)

Cevni sistemi iz polimernih materialov za napeljave z vročo in hladno vodo - Polietilen s povišano temperaturno odpornostjo (PE-RT) - 3. del: Fitingi - Dopolnilo A2 (ISO 22391-3:2009/Amd 2:2021)

General Information

• Status: Published
• Publication Date: 26-Oct-2021
• Withdrawal Date: 29-Apr-2022
• ICS: 23.040.45 - Plastics fittings
• ICS: 91.140.60 - Water supply systems
• ICS: 93.025 - External water conveyance systems
• Technical Committee: CEN/TC 155 - Plastics piping systems and ducting systems
• Drafting Committee: CEN/TC 155/WG 16 - Systems for hot and cold water applications
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Oct-2021
• Due Date: 29-Jun-2022
• Completion Date: 27-Oct-2021
• Ref Project: SIST EN ISO 22391-3:2010/A2:2021 - Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) - Part 3: Fittings - Amendment 2 (ISO 22391-3:2009/Amd 2:2021)

Relations

• Amends: EN ISO 22391-3:2009 - Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) - Part 3: Fittings (ISO 22391-3:2009)
• Effective Date: 22-Apr-2020

Overview

EN ISO 22391-3:2009/A2:2021 is the CEN-adopted amendment (A2, Oct 2021) to ISO 22391-3 (Part 3: Fittings) for plastics piping systems for hot and cold water installations using polyethylene of raised temperature resistance (PE-RT). This amendment updates definitions, materials, test requirements and adds new normative references. It is intended to be published as a national standard across CEN members without alteration.

Key topics and technical requirements

• New and revised definitions
  • Clarifies joint types: compression fitting, radial press fitting, axial press fitting, and push‑fit fitting (including notes on internal supports and sealing elements).
• Permitted metallic materials
  • Metallic fittings for use with ISO 22391 components are limited to copper alloys or stainless steel alloys, defined by an applicable standard or regulatory document.
• Appearance and dimensional requirements
  • Appearance criteria for plastic and metal fittings (surface finish, absence of defects).
  • Dimensional measurement standards: plastic fittings - ISO 3126; metal fittings - ISO 2768‑1 and/or ISO 22081.
• Minimum wall thickness for copper-alloy fittings
  • Annex A (normative) sets minimum wall thickness measurement rules and refers to specific measurement points; values are specified in the standard (see Annex A).
• Physical and chemical tests
  • Plastics: Melt mass flow rate (MFR) comparison per ISO 1133‑1; for PE‑RT the T (190/5) condition applies and the MFR difference limit is 30% between compound and injection‑moulded fitting.
  • Metals: Requirements for stress corrosion resistance and dezincification-hardness criteria and testing per ISO 6506‑1, ISO 6509‑1, and ISO 6957 as applicable.
• Cast alloy tightness test (new Clause 12)
  • Cast fittings must be leak‑tested after machining; a recommended method is immersion in water while applying compressed air at ≥ 0.5 MPa (5 bar) to detect bubbles (leaks).
• Updated normative references
  • Adds ISO 2768‑1, ISO 6506‑1, ISO 6509‑1, ISO 6957, ISO 22081 and removes EN 1254‑3.

Applications and users

This amendment is relevant to:

• Manufacturers of PE‑RT fittings (design, tooling, material selection, quality control)
• Test laboratories performing MFR, corrosion, dezincification and tightness testing
• Specifiers and procurement teams drafting product requirements and compliance clauses
• Plumbing engineers, installers and regulators who rely on harmonized requirements for safe hot and cold water systems
• Standards bodies and conformity assessment organizations implementing CEN adoption

Related standards (examples)

• ISO 22391 series (other parts)
• ISO 1133‑1 (MFR testing)
• ISO 3126 (plastic fitting dimensions)
• ISO 6509‑1 / ISO 6506‑1 / ISO 6957 (metal corrosion and hardness tests)

Keywords: EN ISO 22391-3:2009/A2:2021, PE‑RT fittings standard, plastics piping systems, hot and cold water, compression fitting, press fitting, push‑fit, dezincification, melt mass flow rate, cast alloy tightness test.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2021
Cevni sistemi iz polimernih materialov za napeljave z vročo in hladno vodo -
Polietilen s povišano temperaturno odpornostjo (PE-RT) - 3. del: Fitingi - Dopolnilo
A2 (ISO 22391-3:2009/Amd 2:2021)
Plastics piping systems for hot and cold water installations - Polyethylene of raised
temperature resistance (PE-RT) - Part 3: Fittings - Amendment 2 (ISO 22391-
3:2009/Amd 2:2021)
Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation - Polyethylen
erhöhter Temperaturbeständigkeit (PE-RT) - Teil 3: Formstücke - Änderung 2 (ISO
22391-3:2009/Amd 2:2021)
Systèmes de canalisations en plastique pour les installations d'eau chaude et froide -
Polyéthylène de meilleure résistance à la température (PE-RT) - Partie 3: Raccords -
Amendement 2 (ISO 22391-3:2009/Amd 2:2021)
Ta slovenski standard je istoveten z: EN ISO 22391-3:2009/A2:2021
ICS:
23.040.45 Fitingi iz polimernih Plastics fittings
materialov
91.140.60 Sistemi za oskrbo z vodo Water supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22391-3:2009/A2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 23.040.45; 91.140.60; 93.025
English Version
Plastics piping systems for hot and cold water installations
- Polyethylene of raised temperature resistance (PE-RT) -
Part 3: Fittings - Amendment 2 (ISO 22391-3:2009/Amd
2:2021)
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für die Warm- und
installations d'eau chaude et froide - Polyéthylène de Kaltwasserinstallation - Polyethylen erhöhter
meilleure résistance à la température (PE-RT) - Partie Temperaturbeständigkeit (PE-RT) - Teil 3: Formstücke
3: Raccords - Amendement 2 (ISO 22391-3:2009/Amd - Änderung 2 (ISO 22391-3:2009/Amd 2:2021)
2:2021)
This amendment A2 modifies the European Standard 2777447; it was approved by CEN on 1 October 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22391-3:2009/A2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 22391-3:2009/A2:2021) has been prepared by Technical Committee ISO/TC
138 "Plastics pipes, fittings and valves for the transport of fluids" in collaboration with Technical
Committee CEN/TC 155 “Plastics piping systems and ducting systems” the secretariat of which is held
by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2022, and conflicting national standards shall be
withdrawn at the latest by April 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 22391-3:2009/Amd 2:2021 has been approved by CEN as EN ISO 22391-
3:2009/A2:2021 without any modification.

INTERNATIONAL ISO
STANDARD 22391-3
Second edition
2009-12-01
AMENDMENT 2
2021-10
Plastics piping systems for hot
and cold water installations —
Polyethylene of raised temperature
resistance (PE-RT) —
Part 3:
Fittings
AMENDMENT 2
Systèmes de canalisations en plastique pour les installations d'eau
chaude et froide — Polyéthylène de meilleure résistance à la
température (PE-RT) —
Partie 3: Raccords
AMENDEMENT 2
Reference number
ISO 22391-3:2009/Amd.2:2021(E)
ISO 22391-3:2009/Amd.2:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 22391-3:2009/Amd.2:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 155, Plastics
piping systems and ducting systems, in accordance with the Agreement on technical cooperation between
ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 22391 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iii
ISO 22391-3:2009/Amd.2:2021(E)
Plastics piping systems for hot and cold water
installations — Polyethylene of raised temperature
resistance (PE-RT) —
Part 3:
Fittings
AMENDMENT 2
Normative references
Add the following normative references:
ISO 2768-1, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual
tolerance indications
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6509-1, Corrosion of metals and alloys — Determination of dezincification resistance of copper alloys
with zinc — Part 1: Test method
ISO 6957, Copper alloys — Ammonia test for stress corrosion resistance
ISO 22081, Geometrical product specifications (GPS) — Geometrical tolerancing — General geometrical
specifications and general size specifications

Delete the following normative reference:
EN 1254-3, Copper and copper alloys — Plumbing fittings — Part 3: Fittings with compression ends for use
with plastics pipes
Terms and definitions
Replace the existing definition 3.2.1. with the following:
3.2.1
compression fitting
fitting with internal support in which the joint is made by screwing a union nut along a thread to
compress a ring on the outside wall of the pipe and finally to cause a clamping of the pipe between the
ring and the inner support of the fitting
Note 1 to entry: The fitting may be with or without sealing element

ISO 22391-3:2009/Amd.2:2021(E)
Replace the existing definition 3
...