SIST EN ISO 5771:2024

SLOVENSKI STANDARD
01-julij-2024
Gumene cevi ter cevni priključki za prenos brezvodnega amoniaka - Specifikacija
(ISO 5771:2024)
Rubber hoses and hose assemblies for transferring anhydrous ammonia - Specification
(ISO 5771:2024)
Gummischläuche und -schlauchleitungen für den Transport von wasserfreiem Ammoniak
- Anforderungen (ISO 5771:2024)
Tuyaux et flexibles en caoutchouc pour le transfert d'ammoniac anhydre - Spécifications
(ISO 5771:2024)
Ta slovenski standard je istoveten z: EN ISO 5771:2024
ICS:
83.140.40 Gumene cevi Hoses
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 5771
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2024
EUROPÄISCHE NORM
ICS 71.120.99; 83.140.40 Supersedes EN ISO 5771:2008
English Version
Rubber hoses and hose assemblies for transferring
anhydrous ammonia - Specification (ISO 5771:2024)
Tuyaux et flexibles en caoutchouc pour le transfert Gummischläuche und -schlauchleitungen für den
d'ammoniac anhydre - Spécifications (ISO 5771:2024) Transport von wasserfreiem Ammoniak -
Anforderungen (ISO 5771:2024)
This European Standard was approved by CEN on 19 April 2024.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5771:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 5771:2024) 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 October 2024, and conflicting national standards shall
be withdrawn at the latest by October 2024.
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 5771:2008.
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 5771:2024 has been approved by CEN as EN ISO 5771:2024 without any modification.

International
Standard
ISO 5771
Fourth edition
Rubber hoses and hose assemblies
2024-04
for transferring anhydrous
ammonia — Specification
Tuyaux et flexibles en caoutchouc pour le transfert d'ammoniac
anhydre — Spécifications
Reference number
ISO 5771:2024(en) © ISO 2024
ISO 5771:2024(en)
© ISO 2024
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 5771:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3  Terms and definitions . 1
4 Pressure rating . 2
5 Materials and construction . 2
5.1 Lining .2
5.2 Reinforcement .2
5.3 Cover .2
5.4 Hose assemblies .2
6 Dimensions . 3
6.1 Inside diameters and tolerances .3
6.2 Outside diameter .3
6.3 Concentricity .3
6.4 Tolerances on length.3
7 Physical properties . 3
7.1 Rubber compounds .3
7.2 Finished hose .4
7.3 Ammonia resistance tests .4
7.3.1 Test lengths .5
7.3.2 Ammonia conditioning .5
7.3.3 Flexing of conditioned hose .7
7.3.4 Burst-pressure test on conditioned and flexed hoses .8
7.3.5 Physical-property tests on conditioned and flexed hoses .8
8 Hose assembly delivery test and annual in-use test requirements . 8
9 Frequency of testing . . 8
10 Marking . . 9
11 Packaging and storage . 9
12  Test certificate . 9
Annex A (normative) Type frequency for type tests and routine tests .10
Annex B (informative) Recommendations for the lengths of hoses supplied in bulk and
for tolerances on the lengths of hose assemblies .12
Bibliography .13

iii
ISO 5771:2024(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 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 plastic hoses and hose assemblies, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 5771:2008), which has been technically
revised.
The main changes are as follows:
— the scope has been updated to include the working pressure of the hose;
— the normative references in Clause 2 have been updated: ISO 188 has been changed to the latest edition
and reference to ISO 10619-2 has been added;
— the expression of pressure units throughout the document (MPa, bar) has been updated;
— the type, frequency and routine testing clause has been modified in accordance with the current layout
(see Clause 9);
— the marking clause has been updated (see Clause 10);
— proof pressure and change of length tests as routine tests on finished hose have been changed (see
Annex A);
— Annexes A and B have been combined into one Annex A.
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
International Standard ISO 5771:2024(en)
Rubber hoses and hose assemblies for transferring
anhydrous ammonia — Specification
WARNING — Persons using this document should be familiar with normal laboratory practice. This
document does not purport to address all 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 determine any
applicable national regulatory conditions.
CAUTION — All personnel working with anhydrous ammonia and its delivery systems should be
familiar with and utilize the necessary safety precautions to minimize the potential for personal
injury and property damage. Do not use anhydrous-ammonia hose assemblies at temperatures
or pressures above those recommended by the hose manufacturer. Never recouple an anhydrous-
ammonia hose. Hoses manufactured to this specification are suitable for use with anhydrous
ammonia only.
1 Scope
This document specifies the minimum requirements for rubber hoses used for transferring ammonia, in
liquid or in gaseous form, at ambient temperatures from −40 °C up to and including +55 °C at a working
pressure of 2,5 MPa (25 bar). It does not include specifications for end fittings and is limited to the
performance of the hoses and hose assemblies.
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 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 188:2023, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and tolerances on
cut-to-length hoses
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses
and the lengths of hose assemblies
ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8033, Rubber and plastics h
...