EN ISO 7233:2021
(Main)Rubber and plastics hoses and hose assemblies - Determination of resistance to vacuum (ISO 7233:2021)
Rubber and plastics hoses and hose assemblies - Determination of resistance to vacuum (ISO 7233:2021)
This document specifies three methods for determining the resistance to vacuum of hoses and hose assemblies manufactured from plastic or rubber. Applicable dimensions of hoses for each method are as follows:
— method A for hoses of nominal size up to and including 80;
— method B for hoses of nominal size greater than 80;
— method C for hoses of all dimensions.
If not otherwise specified in the product standard, method C can be used as an alternative to methods A and B.
Methods A and B can also be used to check the adhesion of the lining to the reinforcement (delamination) in a length of hard-wall hose or hose assembly.
Gummi- und Kunststoffschläuche und -schlauchleitungen - Bestimmung der Beständigkeit gegen Vakuum (ISO 7233:2021)
Dieses Dokument legt drei Verfahren zur Bestimmung der Beständigkeit von Schläuchen und Schlauchleitungen aus Kunststoff oder Gummi gegen Vakuum fest. Für jedes Verfahren sind im Folgenden die zutreffenden Schlauchmaße angegeben:
- Verfahren A - für Schläuche mit einer Nennweite bis einschließlich 80;
- Verfahren B - für Schläuche mit einer Nennweite über 80;
- Verfahren C - für alle Schlauchmaße.
Sofern in der Produktnorm nicht anders festgelegt, kann Verfahren C als Alternative zu den Verfahren A und B verwendet werden.
Die Verfahren A und B können auch zur Prüfung der Haftung zwischen Innenschicht und Verstärkungselement (Schichtablösung) in der Länge eines Schlauches mit Wendel oder einer Schlauchleitung verwendet werden.
Tuyaux et flexibles en caoutchouc et en plastique - Détermination de la résistance à l'aspiration (ISO 7233:2021)
Le présent document spécifie trois méthodes pour la détermination de la résistance à l'aspiration des tuyaux et des flexibles fabriqués à partir de plastique ou de caoutchouc. Les dimensions s'appliquant aux tuyaux pour chaque méthode sont les suivantes:
— méthode A pour tuyaux de dimensions nominales inférieures ou égales à 80;
— méthode B pour tuyaux de dimensions nominales supérieures à 80;
— méthode C pour tuyaux de toutes dimensions.
Sauf indication contraire dans la norme de produit, la méthode C peut être utilisée en alternative aux méthodes A et B.
Les méthodes A et B peuvent également être utilisées pour vérifier l'adhérence entre le tube intérieur et le renforcement (délamination) dans une longueur de tuyau ou de flexible de raccordement renforcé.
Gumene in polimerne cevi ter cevni priključki - Ugotavljanje odpornosti proti vakuumu (ISO 7233:2021)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN ISO 7233:2016
Gumene in polimerne cevi ter cevni priključki - Ugotavljanje odpornosti proti
vakuumu (ISO 7233:2021)
Rubber and plastics hoses and hose assemblies - Determination of resistance to
vacuum (ISO 7233:2021)
Gummi- und Kunststoffschläuche und -schlauchleitungen - Bestimmung der
Beständigkeit gegen Vakuum (ISO 7233:2021)
Tuyaux et flexibles en caoutchouc et en plastique - Détermination de la résistance à
l'aspiration (ISO 7233:2021)
Ta slovenski standard je istoveten z: EN ISO 7233:2021
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.
EN ISO 7233
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN ISO 7233:2016
English Version
Rubber and plastics hoses and hose assemblies -
Determination of resistance to vacuum (ISO 7233:2021)
Tuyaux et flexibles en caoutchouc et en plastique - Gummi- und Kunststoffschläuche und -
Détermination de la résistance à l'aspiration (ISO schlauchleitungen - Bestimmung der Beständigkeit
7233:2021) gegen Vakuum (ISO 7233:2021)
This European Standard was approved by CEN on 19 April 2021.
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, 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 7233:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 7233:2021) 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 November 2021, and conflicting national standards
shall be withdrawn at the latest by November 2021.
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 7233:2016.
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 7233:2021 has been approved by CEN as EN ISO 7233:2021 without any modification.
INTERNATIONAL ISO
STANDARD 7233
Fifth edition
2021-04
Rubber and plastics hoses and hose
assemblies — Determination of
resistance to vacuum
Tuyaux et flexibles en caoutchouc et en plastique — Détermination de
la résistance à l'aspiration
Reference number
ISO 7233:2021(E)
©
ISO 2021
ISO 7233:2021(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
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Phone: +41 22 749 01 11
Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2021 – All rights reserved
ISO 7233:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Test pieces . 2
7 Conditioning of test pieces . 2
8 Test pressure . 2
9 Procedures . 2
9.1 Method A . 2
9.2 Method B . 2
9.3 Method C . 3
10 Test report . 4
ISO 7233:2021(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 45, Rubber and rubber products,
Subcommittee SC 1, Rubber and plastics hoses and hose assemblies, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 218, Rubber and plastics hoses and
hose assemblies, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 7233:2016), which has been technically
revised. The main changes compared to the previous edition are as follows:
— hose assembly has been added in the text;
— a statement regarding change in length, as mentioned in Method C, has been added.
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 2021 – All rights reserved
ISO 7233:2021(E)
Introduction
Vacuum testing is applied to hoses or hose assemblies to determine whether they will withstand the
differential pressure encountered in service resulting from reduced pressure within the hose or hose
assembly.
INTERNATIONAL STANDARD ISO 7233:2021(E)
Rubber and plastics hoses and hose assemblies —
Determination of resistance to vacuum
1 Scope
This document specifies three methods for determining the resistance to vacuum of hoses and hose
assemblies manufactured from plastic or rubber. Applicable dimensions of hoses for each method are
as follows:
— method A for hoses of nominal size up to and including 80;
— method B for hoses of nominal size greater than 80;
— method C for hoses of all dimensions.
If not otherwise specified in the product standard, method C can be used as an alternative to
methods A and B.
Methods A and B can also be used to check the adhesion of the lining to the reinforcement (delamination)
in a length of hard-wall hose or hose assembly.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Principle
The test methodology for determining the resistance to vacuum of plastic and rubber hoses and hose
assemblies consists of reducing the internal pressure in a length of hose by means of a vacuum pump and
gauge, while examining the hose for any signs of deformation or delamination of reinforcement or lining.
5 Apparatus
5.1 Vacuum pump, provided with a gauge and capable of reducing the internal pre
...
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