ISO/FDIS 15875-1

Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PE-X) — Part 1: General

Systèmes de canalisations en plastique pour les installations d'eau chaude et froide — Polyéthylène réticulé (PE-X) — Partie 1: Généralités

General Information

• Status: Not Published
• ICS: 23.040.01 - Pipeline components and pipelines in general
• ICS: 91.140.60 - Water supply systems
• Technical Committee: ISO/TC 138/SC 2 - Plastics pipes and fittings for water supplies
• Drafting Committee: ISO/TC 138/SC 2/WG 1 - Plastics piping systems for hot and cold water applications
• Current Stage: 5000 - FDIS registered for formal approval
• Start Date: 19-May-2025
• Completion Date: 31-Mar-2025

Relations

• Consolidates: ISO/IEC 13888-1:2020 - Information security — Non-repudiation — Part 1: General
• Effective Date: 25-Jun-2022
• Revises: ISO 15875-1:2003/Amd 1:2007 - Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PE-X) — Part 1: General — Amendment 1
• Effective Date: 08-May-2020
• Revises: ISO 15875-1:2003 - Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PE-X) — Part 1: General
• Effective Date: 23-Apr-2020

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/TC 138/SC 2
Plastics piping systems for hot
Secretariat: SNV
and cold water installations —
Voting begins on:
Crosslinked polyethylene (PE-X) —
2025-07-28
Part 1:
Voting terminates on:
2025-09-22
General
Systèmes de canalisations en plastique pour les installations
d'eau chaude et froide — Polyéthylène réticulé (PE-X) —
Partie 1: Généralités
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 138/SC 2
Plastics piping systems for hot
Secretariat: SNV
and cold water installations —
Voting begins on:
Crosslinked polyethylene (PE-X) —
Part 1:
Voting terminates on:
General
Systèmes de canalisations en plastique pour les installations
d'eau chaude et froide — Polyéthylène réticulé (PE-X) —
Partie 1: Généralités
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 1
3.1 Terms and definitions .1
3.1.1 General terms .2
3.1.2 Geometrical terms .2
3.1.3 Terms related to service conditions .3
3.1.4 Terms related to material characteristics .4
3.2 Symbols .5
3.3 Abbreviated terms .6
4 PE-X piping systems . 6
4.1 General .6
4.2 Classification of service conditions . .7
5 Generic requirements, instructions and explanations. 8
5.1 Designation PE-X .8
5.2 Application classes, design pressures and pipe dimension classes restrictions .8
5.3 Application classes — Responsibility of the purchaser or specifier .8
5.4 Use of the parts of the ISO 15875 series .8
5.5 PE-X pipes provided with a thin barrier layer .8
5.6 Completeness of tests .9
5.7 Test result interchangeability restriction .9
6 Material. 9
6.1 General .9
6.2 Influence on water intended for human consumption .9
6.3 Reaction to fire .9
6.4 Use of reworked material and recyclate .9
6.4.1 Use of reworked material .9
6.4.2 Use of recyclate .9
7 Technical product information . 9
Bibliography .10

iii
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 15875-1:2003), which has been technically
revised. It also incorporates the Amendment ISO 15875-1:2003/Amd. 1:2007.
The main changes are as follows:
— the definition and description of the term piping system has been updated.
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
Introduction
The ISO 15875 series specifies the requirements for a piping system when pipes are made from crosslinked
polyethylene (PE-X). The ISO 15875 series consists of ISO 15875-1, ISO 15875-2, ISO 15875-3 and ISO 15875-5
and covers the requirements and related test methods for all components used in the system (e. g. pipes
and fittings). In addition, the ISO 15875 series includes requirements and related test methods to verify the
performance and compatibility of the jointing of components.
The piping system is intended to be used for hot and cold water installations.
In respect of potential adverse effects on the quality of water intended for human consumption, caused by
the product covered by the ISO 15875 series:
— the ISO 15875 series provides no information concerning potential restrictions on the use of the product
in any of the Member States of the EU or EFTA;
Requirements and test methods for material and components of the piping systems are specified in
ISO 15875-2 and ISO 15875-3. Characteristics for fitness for purpose (mainly for joints) are covered in
ISO 15875-5. ISO/TS 15875-7 gives guidance for the assessment of conformity.
This document specifies the general aspects of the plastics piping system.
This document is intended to be used only in conjunction with the other parts of the ISO 15875 series, which
are applicable to PE-X pipes, fittings and their joints including joints with components made of other plastics
and non-plastics materials intended to be used for hot and cold water installations.
NOTE Test results obtained from a specific piping system test (according ISO 15875-5) cannot be transferred to
other combinations of pipes and fittings.
At the date of publication of this document, standards for piping systems of other plastics materials used for
the same application include the following series of standards:
— ISO 15874,
— ISO 15875,
— ISO 15876,
— ISO 15877,
— ISO 21003, and
— ISO 22391.
v
FINAL DRAFT International Standard ISO/FDIS 15875-1:2025(en)
Plastics piping systems for hot and cold water installations —
Crosslinked polyethylene (PE-X) —
Part 1:
General
1 Scope
This document specifies the general aspects of crosslinked polyethylene (PE-X) piping systems intended to
be used for hot and cold water installations within buildings for the conveyance of water,
...

Formatted: Space After: 0 pt
Style Definition
ISO/FDIS 15875-1:2025 .
Formatted: French (Switzerland)
ISO /TC 138/SC 2/WG 1
Formatted: zzCover large
CEN/TC 155/WG 16
Formatted: Left: 1.5 cm, Right: 1.5 cm, Header
Secretariat: SNV distance from edge: 1.27 cm, Footer distance from
edge: 1.27 cm
2024-05Date: 2025-07-14
Formatted
...
Formatted
...
Plastics piping systems for hot and cold water installations —
Crosslinked polyethylene (PE-X) — —
Formatted: Regular, French (Switzerland)
Part 1:
Formatted: Cover Title_A2
General
Formatted
...
Systèmes de canalisations en plastique pour les installations d'eau chaude et froide — Polyéthylène réticulé
(PE-X) —
Partie 1: Généralités
FDIS stage
prEN ISO /FDIS 15875-1:2025(en)
Formatted: Font: Bold
Formatted: Font: Bold
Formatted: Font: Bold
Formatted: HeaderCentered, Line spacing: single
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication Formatted: French (Switzerland)
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
Formatted: Indent: Left: 0 cm, Right: 0 cm, Space
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
Before: 0 pt, No page break before, Adjust space
at the address below or ISO’s member body in the country of the requester.
between Latin and Asian text, Adjust space between
Asian text and numbers
ISO copyright office
Formatted: Default Paragraph Font, French
CP 401 • Ch. de Blandonnet 8
(Switzerland)
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (Switzerland)
Formatted: Default Paragraph Font, French
Fax: [phone] (Switzerland)
Formatted: French (Switzerland)
EmailE-mail: [e-mail]
Formatted: French (Switzerland)
Website: www.iso.orgwww.iso.org
Formatted: French (Switzerland)
Published in Switzerland Formatted: zzCopyright address, Indent: Left: 0 cm,
First line: 0 cm, Right: 0 cm, Adjust space between
Latin and Asian text, Adjust space between Asian text

and numbers
Formatted: FooterPageRomanNumber, Line spacing:
single
Formatted: Font: 11 pt
ii © ISO 2018 2025 – All rights reserved
ii
ISO/FDIS 15875-1:2025(en)
Formatted: Font: Bold
Formatted: HeaderCentered, Left, Line spacing: single
Formatted: Font: Bold
Contents
Formatted: Font: Bold
Formatted: Adjust space between Latin and Asian text,
Foreword . iv
Adjust space between Asian text and numbers
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 1
4 PE-X piping systems . 6
5 Generic requirements, instructions and explanations . 8
6 Material . 9
7 Technical product information . 10
Bibliography . 11

Foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions, symbols and abbreviated terms . 6
3.1 Terms and definitions . 6
3.1.1 General terms . 6
3.1.2 Geometrical terms and definitions . 7
3.1.3 Terms and definitions related to service conditions . 8
3.1.4 Terms and definitions related to material characteristics . 9
3.2 Symbols . 10
3.3 Abbreviated terms . 11
4 PE-X piping systems . 11
4.1 General . 11
4.2 Classification of service conditions . 12
5 Generic requirements, instructions and explanations . 13
5.1 Designation PE-X . 13
5.2 Application classes, design pressures and pipe dimension classes restrictions . 13
5.3 Application classes - Responsibility of the purchaser or specifier . 13
5.4 Use of the parts of the system series . 13
5.5 PE-X pipes provided with a thin barrier layer . 13
5.6 Completeness of tests . 13
5.7 Test result interchangeability restriction . 13
6 Material . 14
6.1 General . 14
6.2 Influence on water intended for human consumption . 14
6.3 Reaction to fire . 14
6.4 Use of reworked material and recyclate . 14
6.4.1 Use of reworked material . 14
6.4.2 Use of recyclate . 14
Formatted: Font: 11 pt
7 Technical product information . 14
Formatted: FooterPageRomanNumber, Line spacing:
Bibliography . 15
single
© ISO 2025 – All rights reserved
iii
prEN ISO /FDIS 15875-1:2025(en)
Formatted: Font: Bold
Formatted: Font: Bold
Formatted: Font: Bold
Foreword
Formatted: HeaderCentered, Line spacing: single
ISO (the International Organization for Standardization) is a worldwide federation of national standards
Formatted: Adjust space between Latin and Asian text,
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through Adjust space between Asian text and numbers
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).
Formatted: English (United Kingdom)
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.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.htmlwww.iso.org/iso/foreword.html.
Formatted: English (United Kingdom)
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
Formatted: Font: Not Italic
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
Formatted: Font: Not Italic
Agreement).
Formatted: English (United Kingdom)
This second edition cancels and replaces the first edition (ISO 15875-1:2003), which has been technically Formatted: Don't keep with next
revised. It also incorporates the Amendment ISO 15875-1:2003/Amd. 1:2007.
Formatted: Font: Cambria, English (United Kingdom)
Formatted: Adjust space between Latin and Asian text,
The main changes are as follows:
Adjust space between Asian text and numbers, Tab
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
— — the definition and description of the term piping system ishas been updated.
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
A list of all parts in the ISO 15875 series can be found on the ISO website. Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Any feedback or questions on this document should be directed to the user’s national standards body. A
Formatted: Default Paragraph Font
complete listing of these bodies can be found at www.iso.org/members.htmlwww.iso.org/members.html.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
Formatted: English (United Kingdom)
Formatted: English (United Kingdom)
Formatted: FooterPageRomanNumber, Line spacing:
single
Formatted: Font: 11 pt
iv © ISO 2018 2025 – All rights reserved
iv
ISO/FDIS 15875-1:2025(en)
Formatted: HeaderCentered, Left, Line spacing: single
Formatted
...
Formatted: Adjust space between Latin and Asian text,
Introduction
Adjust space between Asian text and numbers
The ISO 15875 series specifies the requirements for a piping system when made from crosslinked
Formatted
...
polyethylene (PE-X). pipes are made from crosslinked polyethylene (PE-X). The ISO 15875 series consists of
ISO 15875-1, ISO 15875-2, ISO 15875-3 and ISO 15875-5 and covers the requirements and related test
methods for all components used in the system (e. g. pipes and fittings). In addition, the ISO 15875 series
includes requirements and related test methods to verify the performance and compatibility of the jointing of
components.
The piping system is intended to be used for hot and cold water installations.
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
In respect of potential adverse effects on the quality of water intended for human consumption, caused by the
product covered by the ISO 15875 series:
Formatted
...
— — the ISO 15875 series provides no information concerning potential restrictions on the use of the
Formatted: Adjust space between Latin and Asian text,
product in any of the Member States of the EU or EFTA; Adjust space between Asian te
...