oSIST prEN ISO 13341:2024

SLOVENSKI STANDARD
01-september-2024
Plinske jeklenke - Montaža ventilov na plinske jeklenke (ISO/DIS 13341:2024)
Gas cylinders - Fitting of valves to gas cylinders (ISO/DIS 13341:2024)
Gasflaschen- Eindrehen von Ventilen in Gasflaschen (ISO/DIS 13341:2024)
Bouteilles à gaz - Montage des robinets sur les bouteilles à gaz (ISO/DIS 13341:2024)
Ta slovenski standard je istoveten z: prEN ISO 13341
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.

DRAFT
International
Standard
ISO/DIS 13341
ISO/TC 58
Gas cylinders — Fitting of valves to
Secretariat: BSI
gas cylinders
Voting begins on:
Bouteilles à gaz — Montage des robinets sur les bouteilles à gaz
2024-08-02
Voting terminates on:
ICS: 23.020.35
2024-10-25
THIS DOCUMENT IS A DRAFT CIRCULATED
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Reference number
ISO/DIS 13341:2024(en)
DRAFT
ISO/DIS 13341:2024(en)
International
Standard
ISO/DIS 13341
ISO/TC 58
Gas cylinders — Fitting of valves to
Secretariat: BSI
gas cylinders
Voting begins on:
Bouteilles à gaz — Montage des robinets sur les bouteilles à gaz
ICS: 23.020.35 Voting terminates on:
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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BE CONSIDERED IN THE LIGHT OF THEIR
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Published in Switzerland Reference number
ISO/DIS 13341:2024(en)
ii
ISO/DIS 13341:2024(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 .3
6.4 Valve torqueing .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 . 4
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/DIS 13341:2024(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 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 58, Gas cylinders.
This third edition cancels and replaces the second edition (ISO 13341:2010), which has been technically
revised.
The main changes are as follows:
— Update of normative references and bibliography
— Inclusion of amendment 1
— Addition of a requirement in 4.3 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
DRAFT International Standard ISO/DIS 13341:2024(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 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/DIS 10286, Gas cylinders - Vocabulary
ISO 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2: Non-
metallic materials
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 cylinders up to 150 l with load-sharing welded metallic liners
ISO 11363-1, Gas cylinders — 17E and 25E taper threads for connection of valves to gas cylinders — Part 1:
Specifications
ISO/TR 11364, Gas cylinders — Compilation of national and international valve stem/gas cylinder neck threads
and their identification and marking system
ISO 15245-1, Gas cylinders — Parallel threads for connection of valves to gas cylinders — Part 1: Specification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/DIS 10286 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp

ISO/DIS 13341:2024(en)
— IEC Electropedia: available at https:// www .electropedia .org/
4 General requirements and recommendations
Gas cylinders and valves shall be connected so that when in use the combination is gas tight and the valve
cannot be removed inadvertently from the cylinder.
The tools used to screw the valve into the gas cylinder shall fit the valve properly and the gas cylinder shall
be secured against rotation during the torquing process.
The tools shall not cause damage to either the valve or the cylinder. Additional instructions given by the
cylinder manufacturer shall be followed.
In particular for composite cylinders, which are less able to withstand the stresses typically applied to
metallic cylinders, lower stresses may be required at the cylinder surface and/or neck boss.
Minor marks to the valve and the cylinder are acceptable.
The cylinder and the valving tool axes shall be aligned.
Additional instructions given by the cylinder manufacturer shall be followed.
Except as described in 8.3, the torque applied to the valve shall be within the relevant range given in Annex A.
Valve manufacturers shall make instructions available if their specific recommendations regarding their
product differ from those included in this document (e.g. if their torque recommendations are different from
what is allowed in the relevant range included in Annex A).
For all threads, the maximum level of torque should not be exceeded as this will give rise to a high stress in
the valve stem and/or cylinder neck.
Care shall be taken with aluminium alloy cylinders, as valving t
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