oSIST prEN 13953:2025
(Main)LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
This document specifies the design, testing and marking requirements for spring loaded pressure relief valves (PRV), for use in liquefied petroleum gas (LPG) cylinders of water capacity of 0,5 l up to and including 150 l.
These PRVs can be either an integral part of a cylinder valve (see EN ISO 14245 [4] and EN ISO 15995 [5]) or a separate device.
Flüssiggas-Geräte und Ausrüstungsteile - Druckentlastungsventile für ortsbewegliche, wiederbefüllbare Flaschen für Flüssiggas (LPG)
Dieses Dokument legt die Anforderungen an die Auslegung, Prüfung und Kennzeichnung von federbelasteten Druckentlastungsventilen (PRV, en: pressure relief valves) für die Verwendung in Flaschen für Flüssiggas (LPG, en: liquefied petroleum gas) mit einem Fassungsraum von 0,5 l bis einschließlich 150 l fest.
Bei diesen Druckentlastungsventilen kann es sich entweder um ein fest eingebautes Teil eines Flaschenventils (siehe EN ISO 14245 [4] und EN ISO 15995 [5]) oder um eine getrennte Einrichtung handeln.
Équipements et accessoires GPL - Soupapes de sécurité des bouteilles transportables et rechargeables pour gaz de pétrole liquéfiés (GPL)
Le présent document spécifie les exigences de conception, d'essais et de marquage des soupapes de sécurité à action par ressort, utilisées pour les bouteilles de gaz de pétrole liquéfiés (GPL) d'une capacité en eau comprise entre 0,5 l et 150 l inclus.
Ces soupapes peuvent faire partie intégrante du robinet de la bouteille (voir l'EN ISO 14245 [4] et l'EN ISO 15995 [5]) ou constituer un dispositif séparé.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Varnostni ventili za premične, ponovno polnljive jeklenke za UNP
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Oprema in pribor za utekočinjeni naftni plin (UNP) - Varnostni ventili za premične,
ponovno polnljive jeklenke za UNP
LPG equipment and accessories - Pressure relief valves for transportable refillable
cylinders for Liquefied Petroleum Gas (LPG)
Flüssiggas-Geräte und Ausrüstungsteile - Druckentlastungsventile für ortsbewegliche,
wiederbefüllbare Flaschen für Flüssiggas (LPG)
Équipements et accessoires GPL - Soupapes de sécurité des bouteilles transportables
et rechargeables pour gaz de pétrole liquéfiés (GPL)
Ta slovenski standard je istoveten z: prEN 13953
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
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 23.060.40 Will supersede EN 13953:2020
English Version
LPG equipment and accessories - Pressure relief valves for
transportable refillable cylinders for Liquefied Petroleum
Gas (LPG)
Équipements et accessoires GPL - Soupapes de sécurité Flüssiggas-Geräte und Ausrüstungsteile -
des bouteilles transportables et rechargeables pour gaz Druckentlastungsventile für ortsbewegliche,
de pétrole liquéfiés (GPL) wiederbefüllbare Flaschen für Flüssiggas (LPG)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 286.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
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 supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
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. prEN 13953:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Operating Conditions . 7
5 Materials . 7
5.1 General . 7
5.2 Metallic materials . 8
5.3 Non-metallic materials . 8
5.4 Lubricants, sealants and adhesives . 8
6 Design . 8
6.1 General . 8
6.2 Threads . 9
6.3 Springs . 9
7 Type testing . 10
7.1 General . 10
7.2 Test requirements . 11
7.3 Dimensional checks . 12
7.4 Hydraulic pressure proof test. 12
7.5 Leak tightness test and subsequent ageing . 12
7.6 Start to discharge pressure test . 13
7.7 Discharge capacity and reseat pressure test . 13
7.8 Leak tightness tests . 13
7.9 Endurance test . 14
7.10 Visual inspection . 14
8 Test report . 14
9 Production testing . 14
10 Marking . 15
11 Documentation . 15
Annex A (informative) Terms used with PRVs . 16
Annex B (normative) Special low temperature requirements for PRVs . 17
Annex C (normative) Sizing of PRVs for LPG cylinders . 18
Annex D (normative) Production testing . 19
Bibliography . 20
European foreword
This document (prEN 13953:2025) has been prepared by Technical Committee CEN/TC 286 “LPG
Equipment and accessories”, the secretariat of which is held by NSAI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13953:2020.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
The major changes to this revision include:
— addition of water capacity range in the scope;
— addition of requirements for rubber material;
— change to the nominal set pressure;
— clarification to discharge capacity test;
— clarification to endurance test
This document has been submitted for reference in
— the RID and/or
— the technical annexes of the ADR
NOTE These regulations take precedence over any clause of this standard. It is emphasized that RID/ADR are
being revised regularly at intervals of two years which may lead to temporary non-compliances with the clauses of
this standard.”
Introduction
This document calls for the use of substances and procedures that may be injurious to health and/or the
environment if adequate precautions are not taken. It refers only to technical suitability. It does not
absolve the user from their legal obligations at any stage.
Protection of the environment is a key political issue in Europe and elsewhere around the world.
Protection of the environment in this document is understood in a very broad sense. The phrase is used,
for example, in relation to the total life-cycle aspects of a product on the environment, including
expenditure of energy, and during all phases of its existence, from mining of raw materials, to fabrication,
packaging, distribution, use, scrapping, recycling of materials, etc.
It is essential that provisions be restricted to a general guidance. Limit values are specified in national
laws.
Protection of the environment is a key political issue in Europe and elsewhere, for CEN/TC 286 this is
covered in CEN/TS 16765 [2] and this Technical Specification should be read in conjunction with this
document.
It has been assumed in the drafting of this document that the execution of its provisions is entrusted to
appropriately qualified and experienced people.
All pressures are gauge pressures unless otherwise stated.
In this document, the unit bar is used due to its universal use in the field of technical gases. However, it is
to be noted that bar is not an SI unit, and that the corresponding SI unit for pressure is Pa (1 bar = 10
5 2
Pa = 10 N/m ).
NOTE This document requires measurement of material properties, dimensions and pressures. All such
measurements are subject to a degree of uncertainty due to tolerances in measuring equipment, etc. It can be
beneficial to refer to the leaflet “measurement uncertainty leaflet” SP INFO 2000 27 [3].
1 Scope
This document specifies the design, testing and marking requirements for spring loaded pressure relief
valves (PRV), for use in liquefied petroleum gas (LPG) cylinders of water capacity of 0,5 l up to and
including 150 l.
These PRVs can be either an integral part of a cylinder valve (see EN ISO 14245 [4] and EN ISO 15995
[5]) or a separate device.
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.
EN 549:2019+A2:2024, Rubber materials for seals and diaphragms for gas appliances and gas equipment
EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and
hot water - Part 1: Anaerobic jointing compounds
EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and
hot water - Part 2: Non-hardening jointing compounds
EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and
hot water - Part 3: Unsintered PTFE tapes
EN 837-1, Pressure gauges - Part 1: Bourdon tube pressure gauges - Dimensions, metrology, requirements
and testing
EN 12164, Copper and copper alloys - Rod for free machining purposes
EN 12165, Copper and copper alloys - Wrought and unwrought forging stock
EN 12420, Copper and copper alloys - Forgings
EN 13906-1, Cylindrical helical springs made from round wire and bar - Calculation and design - Part 1:
Compression springs
EN ISO 11114-1, Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 1:
Metallic materials (ISO 11114-1)
EN ISO 11114-2, Gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 2:
Non-metallic materials (ISO 11114-2)
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
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
— IEC Electropedia: available at https://www.electropedia.org/
...
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