SIST EN ISO 15995:2021
(Main)Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated (ISO 15995:2021)
Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated (ISO 15995:2021)
This document specifies the requirements for design, specification, type testing and production testing
and inspection of dedicated LPG manually operated cylinder valves for use with and directly connected
to transportable refillable LPG cylinders.
It also includes requirements for associated equipment for vapour and liquid service. Bursting discs
and/or fusible plugs are not covered in this document.
Annex B identifies requirements for production testing and inspection.
This document excludes other LPG cylinder devices which are not an integral part of the dedicated
manually operated cylinder valve.
This document does not apply to cylinder valves for fixed automotive installations and ball valves.
NOTE For self-closing LPG cylinder valves see ISO 14245. For cylinder valves for compressed, dissolved and
other liquefied gases see ISO 10297,[2] ISO 17871[6] or ISO 17879[7].
Gasflaschen - Spezifikation und Prüfung von Flaschenventilen für Flüssiggas (LPG) - Handbetätigt (ISO 15995:2021)
Dieses Dokument legt Anforderungen an Auslegung, Spezifikation, Baumusterprüfung sowie Produktions¬prüfung und Inspektion von handbetätigten Flaschenventilen für Flüssiggas (LPG, en: Liquefied Petroleum Gas) zur Verwendung mit ortsbeweglichen, wiederbefüllbaren LPG-Flaschen fest, an denen die Ventile direkt angeschlossen sind.
Es enthält auch Anforderungen an zugehöriges Zubehör für den Betrieb in der Gas- und Flüssigphase. Berstscheiben und/oder Schmelzsicherungen werden nicht von diesem Dokument abgedeckt.
Anhang B enthält Anforderungen an die Produktionsprüfung und Inspektion.
Dieses Dokument schließt andere LPG-Flascheneinrichtungen aus, die keinen integralen Teil des hand-betätigten Flaschenventils darstellen.
Dieses Dokument gilt nicht für in Fahrzeugen fest eingebaute Flaschenventile und Kugelventile.
ANMERKUNG Für selbstschließende LPG-Flaschenventile siehe ISO 14245. Für Flaschenventile für verdichtete, gelöste und andere verflüssigte Gase siehe ISO 10297 [2], ISO 17871 [6] oder ISO 17879 [7].
Bouteilles à gaz - Spécifications et essais pour valves de bouteilles de GPL - Fermeture manuelle (ISO 15995:2021)
Le présent document spécifie les exigences de conception, les spécifications, les essais de type et les essais et contrôles en production des robinets de bouteilles de GPL dédiés à fonctionnement manuel, destinés à être utilisés avec, et directement raccordés à, des bouteilles de GPL transportables rechargeables.
Le présent document comprend également des exigences relatives aux équipements associés pour le service en phases gazeuse et liquide. Les disques de rupture et/ou les bouchons fusibles ne sont pas couverts par le présent document.
L'Annexe B précise les exigences relatives aux essais et contrôles en production.
Le présent document exclut les autres dispositifs pour bouteilles de GPL qui ne font pas partie intégrante du robinet de bouteille dédié à fonctionnement manuel.
Le présent document ne s'applique pas aux robinets de bouteilles pour installations automobiles fixes, ni aux robinets à tournant sphérique.
NOTE Pour les valves de bouteilles de GPL à fermeture automatique, voir l'ISO 14245. Pour les robinets de bouteilles pour gaz comprimés, dissous et autres gaz liquéfiés, voir l'ISO 10297[2], l'ISO 17871[6] ou l'ISO 17879[7].
Plinske jeklenke - Specifikacija in preskušanje ventilov za jeklenke za utekočinjeni naftni plin (UNP) - Ročno upravljanje (ISO 15995:2021)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15995:2021
01-september-2021
Nadomešča:
SIST EN ISO 15995:2019
Plinske jeklenke - Specifikacija in preskušanje ventilov za jeklenke za utekočinjeni
naftni plin (UNP) - Ročno upravljanje (ISO 15995:2021)
Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated
(ISO 15995:2021)
Gasflaschen - Spezifikation und Prüfung von Flaschenventilen für Flüssiggas (LPG) -
Handbetätigt (ISO 15995:2021)
Bouteilles à gaz - Spécifications et essais pour valves de bouteilles de GPL - Fermeture
manuelle (ISO 15995:2021)
Ta slovenski standard je istoveten z: EN ISO 15995:2021
ICS:
23.020.35 Plinske jeklenke Gas cylinders
23.060.40 Tlačni regulatorji Pressure regulators
SIST EN ISO 15995:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 15995:2021
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SIST EN ISO 15995:2021
EN ISO 15995
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2021
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 15995:2019
English Version
Gas cylinders - Specifications and testing of LPG cylinder
valves - Manually operated (ISO 15995:2021)
Bouteilles à gaz - Spécifications et essais pour valves de Gasflaschen - Spezifikation und Prüfung von
bouteilles de GPL - Fermeture manuelle (ISO Flaschenventilen für Flüssiggas (LPG) - Handbetätigt
15995:2021) (ISO 15995:2021)
This European Standard was approved by CEN on 6 June 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 15995:2021 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 15995:2021
EN ISO 15995:2021 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 15995:2021
EN ISO 15995:2021 (E)
European foreword
This document (EN ISO 15995:2021) has been prepared by Technical Committee ISO/TC 58 "Gas
cylinders" in collaboration with Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment
and accessories” the secretariat of which is held by NSAI.
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 December 2021, and conflicting national standards
shall be withdrawn at the latest by December 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 15995:2019.
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 15995:2021 has been approved by CEN as EN ISO 15995:2021 without any modification.
3
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SIST EN ISO 15995:2021
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SIST EN ISO 15995:2021
INTERNATIONAL ISO
STANDARD 15995
Third edition
2021-06
Gas cylinders — Specifications and
testing of LPG cylinder valves —
Manually operated
Bouteilles à gaz — Spécifications et essais pour valves de bouteilles de
GPL — Fermeture manuelle
Reference number
ISO 15995:2021(E)
©
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 15995:2021
ISO 15995:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© 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
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 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 15995:2021
ISO 15995:2021(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design and specification. 4
4.1 General . 4
4.2 Materials . 5
4.2.1 General. 5
4.2.2 Operating temperatures . 5
4.2.3 Copper alloys . 5
4.2.4 Non-metallic materials . 5
4.3 Essential components . 6
4.3.1 Valve operating mechanism . 6
4.3.2 Valve body . 6
4.3.3 Valve stem . 6
4.3.4 Valve outlet . 6
4.3.5 Excess flow valve . 7
4.4 Optional components . 7
4.4.1 General. 7
4.4.2 Pressure relief valve . 7
4.4.3 Eduction tube . 7
4.4.4 Fixed liquid level gauge . 7
4.4.5 Excess flow valve . 7
4.4.6 Non-return valve . 8
4.4.7 Liquid level indicator . 8
4.4.8 Sealing cap and sealing plug . 8
4.4.9 Sediment tube . 8
4.5 Leak tightness . 8
4.6 Operating torque . 8
4.7 Closing torque . 8
4.8 Opening torque . 8
5 Valve type test . 9
5.1 General . 9
5.2 Test samples . 9
5.3 Test procedure and test requirements .10
5.4 Inspection .11
5.5 Hydraulic pressure test .11
5.5.1 Procedure .11
5.5.2 Requirement .11
5.6 External and internal leak tightness tests .11
5.6.1 Procedure .11
5.6.2 Requirement .12
5.7 Valve stem test .12
5.7.1 Procedure .12
5.7.2 Requirement .13
5.8 Hand wheel fire exposure test .13
5.8.1 Procedure .13
5.8.2 Requirement .13
5.9 Impact test .13
5.9.1 General.13
5.9.2 Procedure .13
© ISO 2021 – All rights reserved iii
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SIST EN ISO 15995:2021
ISO 15995:2021(E)
5.9.3 Requirement .15
5.10 Excessive closing torque test .15
5.10.1 Procedure .15
5.10.2 Requirement .15
5.11 Excessive opening torque test.15
5.11.1 Procedure .15
5.11.2 Requirement .15
5.12 Endurance test .16
5.12.1 Procedure .16
5.12.2 Requirement .16
5.13 Examination of dismantled valves .16
5.13.1 Procedure .16
5.13.2 Requirement .17
5.14 Excess flow valve test .17
5.14.1 General.17
5.14.2 Excess flow valve test with air .17
5.14.3 Excess flow valve test with water .17
5.14.4 Excess flow strength test .18
5.15 Non-return valve test .18
5.15.1 Procedure .18
5.15.2 Requirement .18
5.16 Vibration test .19
5.16.1 Procedure .19
5.16.2 Requirement .19
6 Documentation and test report.19
6.1 Documentation .19
6.2 Test report .19
7 Production testing .19
8 Markings .19
Annex A (normative) Special valves .21
Annex B (normative) Production testing and inspection .22
Annex C (normative) Special low temperature requirements .23
Annex D (normative) Vibration testing .24
Bibliography .25
iv © ISO 2021 – All rights reserved
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SIST EN ISO 15995:2021
ISO 15995:2021(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 58, Gas cylinders, Subcommittee SC 2,
Cylinder fittings, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 286, Liquefied petroleum gas equipment and accessories, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 15995:2019) of which it constitutes a
minor revision. The changes compared to the previous edition are as follows:
— correction of Clause 8, list item c).
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.
© ISO 2021 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 15995:2021
ISO 15995:2021(E)
Introduction
This document covers the function of a LPG cylinder valve as a closure (defined by the UN Model
[15]
Regulations ).
This document has been written so that it is suitable to be referenced in the UN Model Regulations.
Cylinder valves complying with this document can be expected to perform satisfactorily under normal
service conditions.
When an LPG cylinder valve has been approved according to a previous version of this document, the
body responsible for approving the same LPG cylinder valve to this new edition should consider which
tests need to be performed.
In this document the unit bar is used, due to its universal use in the field of technical gases. It should,
however, be noted that bar is not an SI unit, and that the corresponding SI unit for pressure is Pa
5 5 2
(1 bar = 10 Pa = 10 N/m ).
Pressure values given in this document are given as gauge pressure (pressure exceeding atmospheric
pressure) unless noted otherwise.
vi © ISO 2021 – All rights reserved
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SIST EN ISO 15995:2021
INTERNATIONAL STANDARD ISO 15995:2021(E)
Gas cylinders — Specifications and testing of LPG cylinder
valves — Manually operated
1 Scope
This document specifies the requirements for design, specification, type testing and production testing
and inspection of dedicated LPG manually operated cylinder valves for use with and directly connected
to transportable refillable LPG cylinders.
It also includes requirements for associated equipment for vapour and liquid service. Bursting discs
and/or fusible plugs are not covered in this document.
Annex B identifies requirements for production testing and inspection.
This document excludes other LPG cylinder devices which are not an integral part of the dedicated
manually operated cylinder valve.
This document does not apply to cylinder valves for fixed automotive installations and ball valves.
NOTE For self-closing LPG cylinder valves see ISO 14245. For cylinder valves for compressed, dissolved and
[2] [6] [7]
other liquefied gases see ISO 10297, ISO 17871 or ISO 17879 .
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 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1:
Metallic materials
ISO 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2:
Non-metallic materials
ISO 2859-1:1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 13341, Gas cylinders — Fitting of valves to gas cylinders
ISO 10286, Gas cylinders — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10286 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
© ISO 2021 – All rights reserved 1
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SIST EN ISO 15995:2021
ISO 15995:2021(E)
3.1
liquefied petroleum gas
LPG
low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011,
UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane,
butane isomers, butene with traces of other hydrocarbon gases
[SOURCE: ISO 10286:2015, 723, modified.]
3.2
cylinder valve
valve
primary shutoff device fitted to LPG cylinders, intended for liquid or vapour filling and withdrawal
Note 1 to entry: The valve includes the valve body (3.8), valve stem (3.14), valve outlet (3.15) and valve operating
mechanism (3.22).
Note 2 to entry: The valve can also include additiona
...
SLOVENSKI STANDARD
oSIST prEN ISO 15995:2021
01-marec-2021
Plinske jeklenke - Specifikacija in preskušanje ventilov za jeklenke za utekočinjeni
naftni plin (UNP) - Ročno upravljanje (ISO/FDIS 15995:2021)
Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated
(ISO/FDIS 15995:2021)
Gasflaschen - Spezifikation und Prüfung von Flaschenventilen für Flüssiggas (LPG) -
Handbetätigt (ISO/FDIS 15995:2021)
Bouteilles à gaz - Spécifications et essais pour valves de bouteilles de GPL - Fermeture
manuelle (ISO/FDIS 15995:2021)
Ta slovenski standard je istoveten z: prEN ISO 15995
ICS:
23.020.35 Plinske jeklenke Gas cylinders
23.060.40 Tlačni regulatorji Pressure regulators
oSIST prEN ISO 15995:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 15995:2021
---------------------- Page: 2 ----------------------
oSIST prEN ISO 15995:2021
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 15995
ISO/TC 58/SC 2
Gas cylinders — Specifications and
Secretariat: AFNOR
testing of LPG cylinder valves —
Voting begins on:
20210210 Manually operated
Voting terminates on:
Bouteilles à gaz — Spécifications et essais pour valves de bouteilles de
20210505
GPL — Fermeture manuelle
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/FDIS 15995:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2021
---------------------- Page: 3 ----------------------
oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© 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
CP 401 • Ch. de Blandonnet 8
CH1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design and specification. 4
4.1 General . 4
4.2 Materials . 5
4.2.1 General. 5
4.2.2 Operating temperatures . 5
4.2.3 Copper alloys . 5
4.2.4 Nonmetallic materials . 5
4.3 Essential components . 6
4.3.1 Valve operating mechanism . 6
4.3.2 Valve body . 6
4.3.3 Valve stem . 6
4.3.4 Valve outlet . 6
4.3.5 Excess flow valve . 7
4.4 Optional components . 7
4.4.1 General. 7
4.4.2 Pressure relief valve . 7
4.4.3 Eduction tube . 7
4.4.4 Fixed liquid level gauge . 7
4.4.5 Excess flow valve . 7
4.4.6 Nonreturn valve . 8
4.4.7 Liquid level indicator . 8
4.4.8 Sealing cap and sealing plug . 8
4.4.9 Sediment tube . 8
4.5 Leak tightness . 8
4.6 Operating torque . 8
4.7 Closing torque . 8
4.8 Opening torque . 8
5 Valve type test . 9
5.1 General . 9
5.2 Test samples . 9
5.3 Test procedure and test requirements .10
5.4 Inspection .11
5.5 Hydraulic pressure test .11
5.5.1 Procedure .11
5.5.2 Requirement .11
5.6 External and internal leak tightness tests .11
5.6.1 Procedure .11
5.6.2 Requirement .12
5.7 Valve stem test .12
5.7.1 Procedure .12
5.7.2 Requirement .13
5.8 Hand wheel fire exposure test .13
5.8.1 Procedure .13
5.8.2 Requirement .13
5.9 Impact test .13
5.9.1 General.13
5.9.2 Procedure .13
© ISO 2021 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(E)
5.9.3 Requirement .15
5.10 Excessive closing torque test .15
5.10.1 Procedure .15
5.10.2 Requirement .15
5.11 Excessive opening torque test.15
5.11.1 Procedure .15
5.11.2 Requirement .15
5.12 Endurance test .16
5.12.1 Procedure .16
5.12.2 Requirement .16
5.13 Examination of dismantled valves .16
5.13.1 Procedure .16
5.13.2 Requirement .17
5.14 Excess flow valve test .17
5.14.1 General.17
5.14.2 Excess flow valve test with air .17
5.14.3 Excess flow valve test with water .17
5.14.4 Excess flow strength test .18
5.15 Nonreturn valve test .18
5.15.1 Procedure .18
5.15.2 Requirement .18
5.16 Vibration test .19
5.16.1 Procedure .19
5.16.2 Requirement .19
6 Documentation and test report.19
6.1 Documentation .19
6.2 Test report .19
7 Production testing .19
8 Markings .19
Annex A (normative) Special valves .21
Annex B (normative) Production testing and inspection .22
Annex C (normative) Special low temperature requirements .23
Annex D (normative) Vibration testing .24
Bibliography .25
iv © ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(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 nongovernmental, 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, Subcommittee SC 2,
Cylinder fittings, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 286, Liquefied petroleum gas equipment and accessories, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 15995:2019) of which it constitutes a
minor revision. The changes compared to the previous edition are as follows:
— correction of Clause 8, list item c).
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.
© ISO 2021 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(E)
Introduction
This document covers the function of a LPG cylinder valve as a closure (defined by the UN Model
[15]
Regulations ).
This document has been written so that it is suitable to be referenced in the UN Model Regulations.
Cylinder valves complying with this document can be expected to perform satisfactorily under normal
service conditions.
When an LPG cylinder valve has been approved according to a previous version of this document, the
body responsible for approving the same LPG cylinder valve to this new edition should consider which
tests need to be performed.
In this document the unit bar is used, due to its universal use in the field of technical gases. It should,
however, be noted that bar is not an SI unit, and that the corresponding SI unit for pressure is Pa
5 5 2
(1 bar = 10 Pa = 10 N/m ).
Pressure values given in this document are given as gauge pressure (pressure exceeding atmospheric
pressure) unless noted otherwise.
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oSIST prEN ISO 15995:2021
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 15995:2021(E)
Gas cylinders — Specifications and testing of LPG cylinder
valves — Manually operated
1 Scope
This document specifies the requirements for design, specification, type testing and production testing
and inspection of dedicated LPG manually operated cylinder valves for use with and directly connected
to transportable refillable LPG cylinders.
It also includes requirements for associated equipment for vapour and liquid service. Bursting discs
and/or fusible plugs are not covered in this document.
Annex B identifies requirements for production testing and inspection.
This document excludes other LPG cylinder devices which are not an integral part of the dedicated
manually operated cylinder valve.
This document does not apply to cylinder valves for fixed automotive installations and ball valves.
NOTE For self-closing LPG cylinder valves see ISO 14245. For cylinder valves for compressed, dissolved and
[2] [6] [7]
other liquefied gases see ISO 10297, ISO 17871 or ISO 17879 .
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 111141, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1:
Metallic materials
ISO 111142, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2:
Non-metallic materials
ISO 28591:1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 13341, Gas cylinders — Fitting of valves to gas cylinders
ISO 10286, Gas cylinders — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10286 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
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oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(E)
3.1
liquefied petroleum gas
LPG
low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011,
UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane,
butane isomers, butene with traces of other hydrocarbon gases
[SOURCE: ISO 10286:2015, 723, modified.]
3.2
cylinder valve
valve
primary shutoff device fitted to LPG cylinders, intended for liquid or vapour filling and withdrawal
Note 1 to entry: The valve includes the valve body (3.8), valve stem (3.14), valve outlet (3.15) and valve operating
mechanism (3.22).
Note 2 to entry: The valve can also include additional devices, e.g. eduction tube (3.5), liquid level indicator (3.7),
fixed liquid level gauge (3.6), excess flow valve (3.9), non-return valve (3.10), sediment tube (3.19), and pressure
relief valve (3.30).
3.3
external leak tightness
leak tightness to atmosphere (leakage in and/or leakage out), when the valve is open
3.4
internal leak tightness
leak tightness across the valve seat (leakage in and/or leakage out), when the valve is closed
3.5
eduction tube
tube fitted to the valve to allow withdrawal of liquid LPG with the cylinder in its normal operating
position
3.6
fixed liquid level gauge
device such as a dip tube in combination with a vent valve to verify that the predetermined maximum
liquid level in a cylinder has been reached or surpassed
3.7
liquid level indicator
device such as a float gauge, permitting the gauging of the liquid level in the cylinder
3.8
valve body
major valve component including valve stem (3.14) and valve outlet (3.15) and, where applicable, the
provision for other optional components
3.9
excess flow valve
valve comprising two or more components designed to close or partially close when the flow of liquid or
vapour passing through it exceeds a predetermined value and to re-open when the pressure differential
across the valve has been restored below a certain value
3.10
non-return valve
automatic valve which allows gas/liquid to flow only in one direction
[SOURCE: ISO 10286:2015, 349, amended — liquid added.]
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oSIST prEN ISO 15995:2021
ISO/FDIS 15995:2021(E)
3.11
dual valve
valve designed to allow separate vapour and liquid withdrawal from a cylinder in its normal operating
position each port having its own valve operating mechanism
3.12
sealing element
element used to obtain internal leak tightness (3.4)
3.13
special valve
valve which is only used for cylinders up to and including 7,5 l water capacity, having a hand wheel
diameter less than 30 mm and where the maximum section of gas passage is not more than 4 mm
diameter
3.14
valve stem
section of the valve body (3.8), which connects to the cylinder
3.15
valve outlet
section of the valve body (3.8) to which a regulator or connector can be fitted for vapour or liquid
withdrawal
Note 1 to entry: The valve outlet is also normally used for filling the cylinder.
3.16
type test
test or series of tests conducted to prove that the design meets the requirements of this document
3.17
cylinder opening
part of the cylinder to which the valve stem (3.14) connects
3.18
test pressure
pressure at which the valve or component is tested
3.19
sediment tube
device designed to reduce the risk of foreign matter, which can be in the cylinder, entering the valve
3.20
sealing cap
device which is intended to seal the external outlet connection of a valve
[SOURCE: ISO 10286:2015, 368]
3.21
sealing plug
device which is intended to seal the internal outlet connection of a valve
[SOURCE: ISO 10286:2015, 369]
3.22
valve operating mechanism
mechanism which closes and opens the valve orifice and which includes the internal and external
sealing systems
[SOURCE: ISO 10286:2015, 328, modified — EXAMPLE deleted.]
Note 1 to entry: Normally the valve operating mechanism include
...
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