SIST EN ISO 15875-5:2026

SLOVENSKI STANDARD
01-januar-2026
Cevni sistemi iz polimernih materialov za napeljave z vročo in hladno vodo -
Zamreženi polietilen (PE-X) - 5. del: Ustreznost sistema za namene uporabe (ISO
15875-5:2025)
Plastics piping systems for hot and cold water installations - Crosslinked polyethylene
(PE-X) - Part 5: Fitness for purpose of the system (ISO 15875-5:2025)
Kunststoff-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation– Vernetztes
Polyethylen (PE-X)– Teil5: Gebrauchstauglichkeit des Systems (ISO 15875-5:2025)
Systèmes de canalisations en plastique pour les installations d'eau chaude et froide -
Polyéthylène réticulé (PE-X) - Partie 5: Aptitude à l'emploi du système (ISO 15875-
5:2025)
Ta slovenski standard je istoveten z: EN ISO 15875-5:2025
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
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 15875-5
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2025
EUROPÄISCHE NORM
ICS 23.040.20; 91.140.60 Supersedes EN ISO 15875-5:2003, EN ISO 15875-
5:2003/A1:2020
English Version
Plastics piping systems for hot and cold water installations
- Crosslinked polyethylene (PE-X) - Part 5: Fitness for
purpose of the system (ISO 15875-5:2025)
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für die Warm- und
installations d'eau chaude et froide - Polyéthylène Kaltwasserinstallation - Vernetztes Polyethylen (PE-X)
réticulé (PE-X) - Partie 5: Aptitude à l'emploi du - Teil 5: Gebrauchstauglichkeit des Systems (ISO
système (ISO 15875-5:2025) 15875-5:2025)
This European Standard was approved by CEN on 23 October 2025.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a 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 European Standard 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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15875-5:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 15875-5:2025) 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 2026, and conflicting national standards shall be
withdrawn at the latest by April 2026.
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.
This document supersedes EN ISO 15875-5:2003, EN ISO 15875-5:2003/A1:2020.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 15875-5:2025 has been approved by CEN as EN ISO 15875-5:2025 without any
modification.
International
Standard
ISO 15875-5
Second edition
Plastics piping systems for hot
2025-10
and cold water installations —
Crosslinked polyethylene (PE-X) —
Part 5:
Fitness for purpose of the system
Systèmes de canalisations en plastique pour les installations
d'eau chaude et froide — Polyéthylène réticulé (PE-X) —
Partie 5: Aptitude à l'emploi du système
Reference number
ISO 15875-5:2025(en) © ISO 2025

ISO 15875-5:2025(en)
© ISO 2025
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 15875-5:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 2
4 Generic requirements, instructions and explanations. 2
4.1 Designation PE-X .2
4.2 Application classes, design pressures and pipe dimension classes restrictions .2
4.3 Application classes - Responsibility of the purchaser or specifier .2
4.4 Use of the parts of the ISO 15875 series .2
4.5 Completeness of tests .2
4.6 Test result interchangeability restriction .2
5 Fitness for purpose of the joints and the piping system . 3
5.1 General .3
5.2 Internal pressure test . .3
5.3 Bending test .4
5.4 Pull-out test .5
5.5 Thermal cycling test .5
5.6 Pressure cycling test .6
5.7 Leaktightness under vacuum .7
Bibliography . 8

iii
ISO 15875-5:2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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).
This second edition cancels and replaces the first edition (ISO 15875-5:2003), which has been technically
revised. It also incorporates the Technical Corrigendum ISO 15875-5:2003/Cor. 1:2007 and the Amendment
ISO 15875-1:2003/Amd. 1:2020.
The main changes are as follows:
— the Scope has been specified more precisely;
— the normative references have been updated;
— certain terms and definitions have been specified more precisely;
— in subclause 0 - Thermal cycling test has been adopted for bigger dimensions up to DN 250.
A list of all parts in the ISO 15875 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.

iv
ISO 15875-5:2025(en)
Introduction
The ISO 15875 series specifies the requirements for a piping system consisting of pipe, fit
...