EN ISO 22391-3:2009/A2:2021

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: +41 22 749 01 11
Email: copyright@iso.org
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 3.2.2. with the following:
3.2.2
radial press fitting
fitting with internal support in which the joint is made by a radial compression of a ring with a pressing
tool on the outside wall of the pipe 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.
Add the following terms and definitions after 3.2.4.
3.2.5
axial press fitting
fitting with internal support in which the joint is made by an axial movement of a sleeve with a pressing
tool to cause a clamping of the pipe between the sleeve and the inner support of the fitting
Note 1 to entry: The fitting may be with or without sealing element.
3.2.6
push-fit fitting
fitting which incorporates a sealing element, a gripping device and uses an internal support
Note 1 to entry: The joint is made by pushing the pipe into the fitting and a seal is achieved without the use of
heat or tools.
Note 2 to entry: In some designs, this type of joint can be disconnected and re-connected or disconnected and the
fitting re-used elsewhere.
Note 3 to entry: The internal support can be an integrated part of the fitting or a separate part (supporting
sleeve).
4.2
Replace the existing subclause 4.2 with the following:
4.2  Metallic fitting material
Metallic materials for fittings intended to be used with components conforming to ISO 22391 shall
be either copper alloys or stainless steel alloys. The alloys shall be defined according to a standard or
regulatory document.
NOTE Examples for such standards and regulatory documents are listed in the Bibliography.
For copper alloys, the fittings made thereof shall comply with the corrosion resistance requirements
according to 8.2.
5.1
Replace the existing subclause 5.1 with the following:
5.1  Appearance
5.1.1  Appearance of plastic fittings
When viewed without magnification, the internal and external surfaces of fittings shall be smooth, clean
and free from scoring, cavities and other surface defects to an extent that would prevent conformance
ISO 22391-3:2009/Amd.2:2021(E)
with this document. The material shall not contain visible impurities. Slight variations in appearance of
the colour shall be permitted. Each end of a fitting shall be perpendicular to its longitudinal axis.
5.1.2  Appearance of metal fittings
When viewed without magnification, the internal and external surfaces of fittings shall be clean, free
from any residues from the production (e.g. free from cast sand, grease or release agent) and shall have
no sharp edges or cracks.
5.2
Replace the existing title of subclause 5.2 with the following:
5.2  Opacity of plastic fittings

6.1, first sentence
Replace the existing first sentence of subclause 6.1 with the following two sentences:
Dimensions of plastic fittings shall be measured in accordance with ISO 3126.
Dimensions of metal fittings shall be measured in accordance with ISO 2768-1 and/or ISO 22081.

6.3
Replace the existing subclause 6.3 with the following:
6.3  Dimensions of metallic fittings — Minimum wall thickness of fittings made of copper alloys
The minimum wall thickness shall be measured wit
...