Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 5: Fitness for purpose of the system

ISO 4427-5:2007 specifies the characteristics of the fitness for purpose of assembled piping systems made from polyethylene (PE) intended for the conveyance of water for human consumption, including raw water prior to treatment and water for general purposes. It also specifies the test parameters for the test methods to which it refers. In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, fittings, valves, their joints and to joints with components of other materials, intended to be used under the following conditions: a maximum operating pressure (MOP) up to and including 25 bar; an operating temperature of 20 °C as the reference temperature.

Systèmes de canalisations en plastique — Tubes et raccords en polyéthylène (PE) destinés à l'alimentation en eau — Partie 5: Aptitude à l'emploi du système

General Information

Status
Withdrawn
Publication Date
30-Jul-2007
Withdrawal Date
30-Jul-2007
Current Stage
9599 - Withdrawal of International Standard
Start Date
06-Aug-2019
Completion Date
06-Aug-2019
Ref Project

RELATIONS

Buy Standard

Standard
ISO 4427-5:2007 - Plastics piping systems -- Polyethylene (PE) pipes and fittings for water supply
English language
7 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

INTERNATIONAL ISO
STANDARD 4427-5
First edition
2007-08-01
Plastics piping systems — Polyethylene
(PE) pipes and fittings for water supply —
Part 5:
Fitness for purpose of the system
Systèmes de canalisations en plastique — Tubes et raccords en
polyéthylène (PE) destinés à l'alimentation en eau —
Partie 5: Aptitude à l'emploi du système
Reference number
ISO 4427-5:2007(E)
ISO 2007
---------------------- Page: 1 ----------------------
ISO 4427-5:2007(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

COPYRIGHT PROTECTED DOCUMENT
© ISO 2007

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 4427-5:2007(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

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.

ISO 4427-5 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.

ISO 4427 consists of the following parts, under the general title Plastics piping systems — Polyethylene (PE)

pipes and fittings for water supply:
⎯ Part 1: General
⎯ Part 2: Pipes
⎯ Part 3: Fittings
⎯ Part 5: Fitness for purpose of the system
© ISO 2007 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 4427-5:2007(E)
Introduction

ISO 4427, the system standard, specifies the requirements for a piping system and its components when

made from polyethylene (PE). The piping system is intended to be used for water supply intended for human

consumption, including the conveyance of raw water prior to treatment and that of water for general purposes.

In respect of potential adverse effects on the quality of water intended for human consumption caused by the

products covered by ISO 4427:

a) ISO 4427 provides no information as to whether the products may be used without restriction;

b) existing national regulations concerning the use and/or the characteristics of these products are in force.

iv © ISO 2007 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 4427-5:2007(E)
Plastics piping systems — Polyethylene (PE) pipes and fittings
for water supply —
Part 5:
Fitness for purpose of the system
1 Scope

This part of ISO 4427 specifies the characteristics of the fitness for purpose of assembled piping systems

made from polyethylene (PE) intended for the conveyance of water for human consumption, including raw

water prior to treatment and water for general purposes.
It also specifies the test parameters for the test methods to which it refers.

In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, fittings, valves, their joints and to

joints with components of other materials, intended to be used under the following conditions:

a) a maximum operating pressure (MOP) up to and including 25 bar ;
b) an operating temperature of 20 °C as the reference temperature.

NOTE 1 For applications operating at constant temperatures greater than 20 °C and up to 40 °C, see ISO 4427-1:2007,

Annex A.

NOTE 2 ISO 4427 covers a range of maximum operating pressures and gives requirements concerning colours and

additives. It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking

into account their particular requirements and any relevant national guidance or regulations and installation practices or

codes.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of

the resistance to internal pressure — Part 1: General method

ISO 1167-3, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of

the resistance to internal pressure — Part 3: Preparation of components

ISO 3458, Assembled joints between fittings and polyethylene (PE) pressure pipes — Test of leakproofness

under internal pressure
5 2
1) 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm .
© ISO 2007 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 4427-5:2007(E)

ISO 3459, Polyethylene (PE) pressure pipes — Joints assembled with mechanical fittings — Internal under-

pressure test method and requirement

ISO 3501, Assembled joints between fittings and polyethylene (PE) pressure pipes — Test of resistance to

pull-out

ISO 3503, Assembled joints between fittings and polyethylene (PE) pressure pipes — Test of leakproofness

under internal pressure when subjected to bending

ISO 4427-1:2007, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 1:

General

ISO 4427-3, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 3: Fittings

ISO 11413:1996, Plastics pipes and fittings — Preparation of test piece assemblies between a polyethylene

(PE) pipe and an electrofusion fitting

ISO 11414:1996, Plastics pipes and fittings — Preparation of polyethylene (PE) pipe/pipe or pipe/fitting test

piece assemblies by butt fusion

ISO 13953, Polyethylene (PE) pipes and fittings — Determination of the tensile strength and failure mode of

test pieces from a butt-fused joint

ISO 13954, Plastics pipes and fittings — Peel decohesion test for polyethylene (PE) electrofusion assemblies

of nominal outside diameter greater than or equal to 90 mm

ISO 13955, Plastics pipes and fittings — Crushing decohesion test for polyethylene (PE) electrofusion

assemblies
3 Terms, definitions, symbols and abbreviated terms

For the purposes of this document, the terms, definitions, symbols and abbreviated terms given in ISO 4427-1

and the following terms and definitions apply.
3.1
electrofusion joint

joint between a PE socket or saddle electrofusion fitting and pipe or fitting with spigotted ends, made by

heating the electrofusion fittings by the Joule effect of the heating element incorporated at their jointing

surfaces, causing the material adjacent to them to melt and the pipe and fitting surfaces to fuse

3.2
butt fusion joint

joint made by heating the planed ends of matching surfaces by holding them against a flat heating plate until

the PE material reaches fusion temperature, quickly removing the heating plate and pushing the two softened

ends against one another
3.3
saddle fusion joint

joint made by heating the curved surface of a saddle and the outside surface of a pipe by holding them

against a heated tool until the PE material reaches fusion temperature, quickly removing the heated tool and

pushing the two softened surfaces against each other
3.4
mechanical joint

joint made by assembling a PE pipe to another PE pipe, or any other element of the piping system that

generally includes a compression part, to provide for pressure integrity, leaktightness and resistance to end

loads
2 © ISO 2007 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 4427-5:2007(E)

NOTE 1 A support sleeve inserted into the pipe bore can be used to provide a permanent support for the PE pipe to

prevent creep in the pipe wall under radial compressive forces.

NOTE 2 Metallic parts of these fittings can be assembled to metallic pipes by jointing threads, compression joints, or

welded or flanged connections including PE flanges. The fitting can allow either a dismountable or permanently assembled

joint.
3.5
fusion compatibility

ability of two similar or dissimilar polyethylene (PE) materials to be fused togeth

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.