SIST EN ISO 13341:2025

SLOVENSKI STANDARD
01-december-2025
Nadomešča:
SIST EN ISO 13341:2011
SIST EN ISO 13341:2011/A1:2015
Plinske jeklenke - Montaža ventilov na plinske jeklenke (ISO 13341:2025)
Gas cylinders - Fitting of valves to gas cylinders (ISO 13341:2025)
Gasflaschen- Eindrehen von Ventilen in Gasflaschen (ISO 13341:2025)
Bouteilles à gaz - Montage des robinets sur les bouteilles à gaz (ISO 13341:2025)
Ta slovenski standard je istoveten z: EN ISO 13341:2025
ICS:
23.020.35 Plinske jeklenke Gas cylinders
23.060.40 Tlačni regulatorji Pressure regulators
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13341
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2025
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 13341:2010, EN ISO
13341:2010/A1:2015
English Version
Gas cylinders - Fitting of valves to gas cylinders (ISO
13341:2025)
Bouteilles à gaz - Montage des robinets sur les Gasflaschen- Eindrehen von Ventilen in Gasflaschen
bouteilles à gaz (ISO 13341:2025) (ISO 13341:2025)
This European Standard was approved by CEN on 13 July 2025.

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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13341:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13341:2025) has been prepared by Technical Committee ISO/TC 58 "Gas
cylinders " in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” 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 February 2026, and conflicting national standards
shall be withdrawn at the latest by February 2026.
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 13341:2010.
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 13341:2025 has been approved by CEN as EN ISO 13341:2025 without any modification.

International
Standard
ISO 13341
Third edition
Gas cylinders — Fitting of valves to
2025-07
gas cylinders
Bouteilles à gaz — Montage des robinets sur les bouteilles à gaz
Reference number
ISO 13341:2025(en) © ISO 2025
ISO 13341:2025(en)
© ISO 2025
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 13341:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements and recommendations. 2
5 Preparation . 2
6 Valving procedure for taper threaded valves . 3
6.1 General .3
6.2 Wrapping with sealant tape .3
6.3 Application of soft metal cones and PTFE cones .3
6.4 Valve torquing .4
7 Valving procedure for parallel threaded valves . 4
8 Procedure for achieving valve alignment for cylinders with fixed (e.g. welded) shroud
and taper threads . 5
Annex A (normative) Valving torques for threads in accordance with ISO 11363-1 and
ISO 15245-1 . 6
Annex B (informative) Application of paste as sealant. 8
Bibliography . 9

iii
ISO 13341:2025(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 58, Gas cylinders, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 23, Transportable
gas cylinders, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This third edition cancels and replaces the second edition (ISO 13341:2010), which has been technically
revised. It also incorporates the Amendment ISO 13341:2010/Amd 1:2015.
The main changes are as follows:
— update of Clause 2 and Bibliography;
— addition of a requirement in 5.3 with regards to the cleaning of cylinder threads.
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 13341:2025(en)
Gas cylinders — Fitting of valves to gas cylinders
1 Scope
This document specifies the procedures to be followed when connecting cylinder valves to gas cylinders. It
specifically applies to all valve and cylinder combinations connected with ISO screw threads as specified in
ISO 11363-1 and ISO 15245-1. It defines procedures and practices for inspection and preparation prior to
valving for both taper and parallel screw threads.
Torque values are given in Annex A for steel and aluminium alloy gas cylinders including composite cylinders
with steel or aluminium alloy neck boss.
NOTE The procedures and practices specified in this document can be beneficially applied to other valve to
cylinder screw thread connection systems. ISO/TR 11364 lists the valve to gas cylinder threads in use worldwide. It
gives details of the thread identification codes, whether the threads are interchangeable with ISO threads and if the
taping procedure and torque values specified in this document can be used. ISO/TR 11364 gives clear guidance for the
method and torque for all listed inlet threads, which are not interchangeable.
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 10286, Gas cylinders — Vocabulary
ISO 11119-2, Gas cylinders — Design, construction and testing of refillable composite gas cylinders and tubes —
Part 2: Fully wrapped fibre reinforced composite gas cylinders and tubes up to 450 l with load-sharing metal liners
ISO 11119-3, Gas cylinders — Design, construction and testing of refillable composite gas cylinders and tubes
— Part 3: Fully wrapped fibre reinforced composite gas cylinders and tubes up to 450 l with non-load-sharing
metallic or non-metallic liners or without liners
ISO 11119-4, Gas cylinders — Refillable composite gas cylinders — Design, construction and testing — Part 4:
Fully wrapped fibre reinforced composite gas
...