EN ISO 4023:2009

SLOVENSKI STANDARD
01-februar-2010
1DGRPHãþD
SIST EN ISO 4023:2002
*XPHQHFHYLLQFHYQLSULNOMXþNL]DSDUR3UHVNXVQHPHWRGH,62
Rubber hoses and hose assemblies for steam - Test methods (ISO 4023:2009)
Gummischläuche und -schlauchleitungen für Dampf - Prüfverfahren (ISO 4023:2009)
Tuyaux et flexibles en caoutchouc pour la vapeur - Méthodes d'essai (ISO 4023:2009)
Ta slovenski standard je istoveten z: EN ISO 4023:2009
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 4023
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2009
ICS 23.040.70 Supersedes EN ISO 4023:1995
English Version
Rubber hoses and hose assemblies for steam - Test methods
(ISO 4023:2009)
Tuyaux et flexibles en caoutchouc pour la vapeur - Gummischläuche und -schlauchleitungen für Dampf -
Méthodes d'essai (ISO 4023:2009) Prüfverfahren (ISO 4023:2009)
This European Standard was approved by CEN on 7 October 2009.

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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4023:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 4023:2009) has been prepared by Technical Committee ISO/TC 45 "Rubber and
rubber products" in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and
hose assemblies” the secretariat of which is held by BSI.
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 May 2010, and conflicting national standards shall be withdrawn at the
latest by May 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 4023:1995.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 4023:2009 has been approved by CEN as a EN ISO 4023:2009 without any modification.

INTERNATIONAL ISO
STANDARD 4023
Fourth edition
2009-11-01
Rubber hoses and hose assemblies
for steam — Test methods
Tuyaux et flexibles en caoutchouc pour la vapeur — Méthodes d'essai

Reference number
ISO 4023:2009(E)
©
ISO 2009
ISO 4023:2009(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.

©  ISO 2009
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 2009 – All rights reserved

ISO 4023:2009(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Method A: Vertical rack method .1
3.1 Principle.1
3.2 Apparatus.2
3.3 Test piece .2
3.4 Procedure.2
3.5 Test report.4
4 Method B: Horizontal rack method.4
4.1 Principle.4
4.2 Apparatus.4
4.3 Test piece .5
4.4 Procedure.5
4.5 Test report.6
5 Method C: Flexing test, vertical arrangement .6
5.1 Principle.6
5.2 Apparatus.6
5.3 Test piece .6
5.4 Procedure.7
5.5 Test report.8
6 Method D: Flexing test, horizontal arrangement.8
6.1 Principle.8
6.2 Apparatus.9
6.3 Test piece .9
6.4 Procedure.9
6.5 Test report.11

ISO 4023:2009(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 4023 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Hoses (rubber and plastics).
This fourth edition cancels and replaces the third edition (ISO 4023:1991), which has been technically revised.
The major technical change is the broadening of the scope to include hose assemblies. These have to be
fitted with suitable end connections and couplings as, for a particular hose design, the type of end connection
used can have a significant influence on the test results.
A procedure for dealing with any initial leakage between hose body and end fitting which sometimes occurs at
the start of the test is also included.

iv © ISO 2009 – All rights reserved

INTERNATIONAL STANDARD ISO 4023:2009(E)

Rubber hoses and hose assemblies for steam — Test methods
WARNING — Persons using this International Standard should be familiar with normal laboratory
practice. This standard does not purport to address all of the safety problems, if any, associated with
its use. It is the responsibility of the user to establish appropriate health and safety practices and to
ensure compliance with any national regulatory conditions.
All necessary safety devices shall be provided to ensure safe working conditions for the operators.
1 Scope
This International Standard specifies test methods in which a rubber hose test piece or hose assembly is
exposed to saturated steam, thus simulating service conditions.
Four methods are specified, namely:
⎯ method A: vertical rack method;
⎯ method B: horizontal rack method;
⎯ method C: flexing test, vertical arrangement;
⎯ method D: flexing test, horizontal arrangement.
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 6134, Rubber hoses and hose assemblies for saturated steam — Specification
3 Method A: Vertical rack method
3.1 Principle
A length of hose or hose assembly is held in a fixed vertical position and saturated steam is passed through it.
NOTE The temperature or pressure of the steam and the time of exposure are given in ISO 6134 for each particular
hose type. The relevant hose product standard will normally state which, if any, physical properties are to be used to
check for hose deterioration as well as the permitted changes in these properties. Properties commonly specified are
bursting strength, tensile strength, elongation at break of the lining and/or cover and adhesion between layers. Visually
assessed test criteria may also be specified, for example rupture of reinforcement, cracking of cover to a specified dept
...