SIST EN ISO 15995:2010
(Main)Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated (ISO 15995:2006)
Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated (ISO 15995:2006)
This International Standard specifies the requirements for design, specification and type testing of dedicated LPG manually operated cylinder valves specifically for use with transportable refillable LPG cylinders from 0,5 l up to 150 l water capacity. It includes references to associated equipment for vapour or liquid service.
Gasflaschen - Spezifikation und Prüfung von Flaschenventilen für Flüssiggas (LPG) - Handbetätigt (ISO 15995:2006)
Diese Internationale Norm legt Anforderungen an Auslegung, Spezifikation und Baumusterprüfung von handbetätigten Flaschenventilen für Flüssiggas (LPG, en: Liquified Petroleum Gas), speziell zur Verwendung mit LPG-Gasflaschen mit einem geometrischen Volumen von 0,5 l bis einschließlich 150 l fest. Sie enthält Verweisungen auf zugehöriges Zubehör für den Betrieb in der Gas- und Flüssigphase.
ANMERKUNG Anhang C enthält Empfehlungen für Produktionsprüfungen und -inspektionen.
Diese Internationale Norm gilt nicht für in Fahrzeugen fest eingebaute Einrichtungen.
Bouteilles à gaz - Spécifications et essais pour valves de bouteilles de GPL - Fermeture manuelle (ISO 15995:2006)
L'ISO 15995:2006 spécifie les exigences de conception, les spécifications et les essais de type des valves de bouteilles de GPL dédiées à fonctionnement manuel, spécifiquement pour être utilisées avec les bouteilles de GPL transportables rechargeables, d'une capacité en eau de 0,5 l à 150 l. Elle comprend des références aux équipements associés pour le service en phase gazeuse ou liquide.
Plinske jeklenke - Specifikacija in preskušanje ventilov za jeklenke za utekočinjeni naftni plin (UNP) - Ročno upravljanje (ISO 15995:2006)
Ta mednarodni standard določa zahteve za načrtovanje, specifikacijo in tipsko preskušanje namenskih ventilov z ročnim upravljanjem za jeklenke za utekočinjeni naftni plin (UNG) za izrecno uporabo s prenosnimi jeklenkami za utekočinjeni naftni plin za večkratno polnjenje s prostornino od 0,5 l do 150 l. Vključuje sklice na povezano opremo za oskrbo s paro ali tekočinami.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15995:2010
01-oktober-2010
1DGRPHãþD
SIST EN 13153:2002
SIST EN 13153:2002/A1:2003
3OLQVNHMHNOHQNH6SHFLILNDFLMDLQSUHVNXãDQMHYHQWLORY]DMHNOHQNH]DXWHNRþLQMHQL
QDIWQLSOLQ 813 5RþQRXSUDYOMDQMH ,62
Gas cylinders - Specifications and testing of LPG cylinder valves - Manually operated
(ISO 15995:2006)
Gasflaschen - Spezifikation und Prüfung von Flaschenventilen für Flüssiggas (LPG) -
Handbetätigt (ISO 15995:2006)
Bouteilles à gaz - Spécifications et essais pour valves de bouteilles de GPL - Fermeture
manuelle (ISO 15995:2006)
Ta slovenski standard je istoveten z: EN ISO 15995:2010
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
SIST EN ISO 15995:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 15995:2010
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SIST EN ISO 15995:2010
EUROPEAN STANDARD
EN ISO 15995
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2010
ICS 23.020.30 Supersedes EN 13153:2001
English Version
Gas cylinders - Specifications and testing of LPG cylinder valves
- Manually operated (ISO 15995:2006)
Bouteilles à gaz - Spécifications et essais pour valves de Gasflaschen - Spezifikation und Prüfung von
bouteilles de GPL - Fermeture manuelle (ISO 15995:2006) Flaschenventilen für Flüssiggas (LPG) - Handbetätigt (ISO
15995:2006)
This European Standard was approved by CEN on 20 May 2010.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15995:2010: E
worldwide for CEN national Members.
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SIST EN ISO 15995:2010
EN ISO 15995:2010 (E)
Contents Page
Foreword .3
2
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SIST EN ISO 15995:2010
EN ISO 15995:2010 (E)
Foreword
The text of ISO 15995:2006 has been prepared by Technical Committee ISO/TC 58 “Gas cylinders” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 15995:2010 by
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 2010, and conflicting national standards shall be withdrawn
at the latest by December 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13153:2001.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 15995:2006 has been approved by CEN as a EN ISO 15995:2010 without any modification.
3
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SIST EN ISO 15995:2010
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SIST EN ISO 15995:2010
INTERNATIONAL ISO
STANDARD 15995
First edition
2006-02-15
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 15995:2006(E)
©
ISO 2006
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
PDF disclaimer
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Published in Switzerland
ii © ISO 2006 – All rights reserved
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Design and specification . 4
4.1 General. 4
4.2 Materials . 4
4.3 Essential components. 5
4.4 Optional components. 6
4.5 Leak tightness. 7
4.6 Operating torque. 7
4.7 Opening torque . 8
4.8 Closing torque. 8
5 Valve type test. 8
5.1 General. 8
5.2 Test procedure and test requirements . 8
5.3 External and internal tightness tests (Test nos. 2, 5, 8, 11, 12, 13, 15, 16 and 17). 8
5.4 Hydraulic pressure test (Test no. 1). 10
5.5 External and internal tightness test (Test no. 2) . 10
5.6 Valve closure test (Test no. 3) . 11
5.7 Valve stem test (Test no. 4) . 11
5.8 External and internal tightness test (Test no. 5) . 11
5.9 Hand wheel fire exposure test (Test no. 6) .12
5.10 Impact test (Test no. 7). 12
5.11 External and internal tightness test (Test no. 8) . 13
5.12 Resistance to excessive closing torque test (Test no. 9). 13
5.13 Resistance to excessive opening torque test (Test no. 10) . 13
5.14 External tightness test (Test no. 11). 14
5.15 External and internal tightness test (Test no. 12) . 14
5.16 External and internal tightness test after ageing (Test no. 13). 14
5.17 Endurance test (Test no. 14). 14
5.18 External and internal tightness test (Test no. 15) . 15
5.19 External and internal tightness test — High temperature (Test no. 16). 15
5.20 External and internal tightness test — Low temperature (Test no. 17). 15
5.21 Examination of dismantled valves number 9 to 13 (Test number 18). 15
5.22 Acceptance criteria. 15
6 Documentation/Test report. 15
6.1 Documentation. 15
6.2 Test report . 16
7 Markings . 16
Annex A (normative) Valve dimensions. 17
Annex B (normative) Valves for cylinders up to and including 7,5 litre water capacity. 18
Annex C (informative) Production testing and inspection. 20
Annex D (normative) Special low temperature requirements for valves. 21
Bibliography . 22
© ISO 2006 – All rights reserved iii
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SIST EN ISO 15995:2010
ISO 15995:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 15995 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2, Cylinder
fittings.
iv © ISO 2006 – All rights reserved
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
Introduction
This International Standard calls for the use of substances and procedures that can be injurious to health if
adequate precautions are not taken. It refers only to technical suitability and does not absolve the user from
legal obligations relating to health and safety at any stage.
It has been assumed in the drafting of this International Standard that execution of its provisions is entrusted
to appropriately qualified and experienced people.
© ISO 2006 – All rights reserved v
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SIST EN ISO 15995:2010
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SIST EN ISO 15995:2010
INTERNATIONAL STANDARD ISO 15995:2006(E)
Gas cylinders — Specifications and testing of LPG cylinder
valves — Manually operated
1 Scope
This International Standard specifies the requirements for design, specification and type testing of dedicated
LPG manually operated cylinder valves specifically for use with transportable refillable LPG cylinders from
0,5 l up to 150 l water capacity. It includes references to associated equipment for vapour or liquid service.
NOTE Annex C gives the recommendations for production testing and inspection.
This International Standard does not apply to fixed automotive installations.
2 Normative references
The following referenced documents are indispensable for the application 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 10920, Gas cylinders — 25E taper thread for connection of valves to gas cylinders — Specification
ISO 11114-1, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas
contents — Part 1: Metallic materials
ISO 11114-2, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas
contents — Part 2: Non-metallic materials
ISO 11116-1, Gas cylinders — 17E taper thread for connection of valves to gas cylinders — Part 1:
Specifications
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
liquefied petroleum gas
LPG
mixture of predominantly butane or propane with traces of other hydrocarbon gases classified in accordance
with UN number 1965, hydrocarbon gas mixture, liquefied, or NOS or UN number 1075, petroleum gases,
liquefied
NOTE In some countries, UN number 1011 and UN number 1978 may also be used to designate LPG.
3.2
cylinder valve
valve designed for use in one or more of the following applications: liquid filling, liquid service, vapour service
or liquid level indication
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
3.3
external tightness
resistance to leakage through the valve body to or from the atmosphere, when the valve is open
3.4
internal tightness
resistance to leakage across the valve seat, or other internal sealing components 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
control 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
control 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 and/or valve outlet and, where applicable, the provision for other
optional components
3.9
excess flow device (flow limiter)
device 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
valve designed to close automatically to restrict reverse flow
3.11
vapour/liquid dual valve
valve designed to allow vapour and liquid withdrawal from a cylinder in its normal operating position
3.12
sealing element
element used to obtain internal leak tightness
3.13
valve stem
section of the valve body, which connects to the cylinder
3.14
valve outlet
section of the valve body to which a regulator or connector can be fitted for vapour or liquid withdrawal
NOTE The valve outlet is also normally used for filling the cylinder.
3.15
type test
test or series of tests conducted to prove that the design meets the requirements of this International Standard
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
3.16
cylinder opening
part of the cylinder to which the valve stem connects
3.17
test pressure
pressure at which the valve or component is tested in bar gauge
3.18
sediment tube
device designed to reduce the risk of foreign matter, which can be in the cylinder, entering the valve
3.19
sealing cap
device fitted to, or integral with, the outlet of the cylinder valve to provide secondary closure
3.20
valve operating mechanism
mechanism which closes and opens the valve orifice, e.g. threaded valve spindle which, when rotated, raises
and lowers a seal
3.21
sealing mechanism
mechanism to obtain internal leak tightness
3.22
operating torque
torque during opening or closing the valve, after the first half rotation of the hand wheel in opening the valve
and before the last half rotation of the hand wheel in closing the valve
3.23
opening torque
initial torque required to open the valve from the closed position
3.24
closing torque
torque required to close the valve and obtain internal tightness
3.25
protection cap
device that may be screwed to a fitting permanently attached to the cylinder to protect a cylinder valve
3.26
shroud/guard
device that may be welded to the cylinder to protect a cylinder valve
3.27
gross mass
mass of the heaviest cylinder on which the valve is intended to be fitted, including any permanently attached
accessories and the maximum mass of the LPG content
3.28
pressure relief valve
valve which automatically, without the assistance of any energy other than that of the fluid concerned,
discharges a quantity of fluid so as to prevent a predetermined safe pressure being exceeded, and which is
designed to re-close and prevent the further flow of fluid after normal pressure conditions of service have been
restored
NOTE The loading due to the fluid pressure underneath the valve-sealing element is opposed by a spring.
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
4 Design and specification
4.1 General
4.1.1 The valve shall be capable of withstanding:
⎯ operating pressures and test pressures;
⎯ mechanical stresses, including dynamic loads such as pressure shocks or cyclic changes;
⎯ operating temperatures.
NOTE Pressures are gauged unless otherwise specified.
4.1.2 There shall be valve external and internal leak tightness for the full range of pressure and temperature
conditions.
4.1.3 The specific requirements relating to the functions, mechanical strength, pressure, operating
temperatures, external and internal leak tightness of the valve and its components, are detailed in the
following subclauses of this clause and/or in the relevant test of Clause 5.
4.2 Materials
4.2.1 General
Materials in contact with LPG shall be physically and chemically compatible with LPG under all operating
conditions for which the valve is designed (see ISO 11114-1 and ISO 11114-2).
In selecting an appropriate material for valve components, it is important to select not only for adequate
strength in service, but also to give consideration to other modes of failure due to atmospheric corrosion,
brass dezincification, stress corrosion, shock loads, and material failure.
4.2.2 Operating temperatures
Materials used shall be suitable for the temperatures for which the valve is designed.
The minimum operating temperature to which the valve is expected to be exposed during normal use is minus
20 °C. In service, temperatures below this may be encountered during short periods, for example, during filling.
Where necessary, e.g. in some countries and for certain applications, lower minimum operating temperatures
shall be used. When equipment is designed for a temperature of minus 40 °C, it shall also meet the
requirements of Annex D.
The maximum operating temperature to which the valve is expected to be exposed during normal operation is
65 °C. In service, this temperature may be exceeded for short periods.
4.2.3 Copper alloys
Valve bodies made from copper alloys shall be manufactured from materials in accordance with recognized
standards, e.g. EN 12164 and EN 12165, or from alloys of equivalent properties and standards.
4.2.4 Non-metallic materials
Non-metallic materials in contact with LPG shall be compatible with LPG, e.g. ISO 11114-2. They shall not
distort, harden or adhere to the body or seat face to such an extent as to impair the function of the valve.
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
In accordance with national or international standards, for example EN 549, non-metallic materials in contact
with LPG shall meet the requirements for resistance to:
⎯ gas (pentane test);
⎯ lubricants;
⎯ ageing;
⎯ low temperature;
⎯ high temperature;
⎯ compression;
⎯ ozone (where the material is exposed to the atmosphere).
4.3 Essential components
4.3.1 Valve operating mechanism
The valve operating mechanism normally includes a hand wheel.
The valve operating mechanism shall be designed in such a way that it remains captive and achieves direct
contact with the valve body in the absence of the sealing element, in order to limit the leakage rate of gas.
Under normal use, the valve shall operate without difficulty even after prolonged use and shall satisfy the
requirements of 5.17.
The operating mechanism shall withstand an opening and closing torque in accordance with 5.12 and 5.13.
When a torque is applied in excess of that given in 5.12 and 5.13 the operating mechanism shall not
disassemble from the valve body and create a leak. However, the operating mechanism may break or become
inoperable. The material of the valve operating mechanism shall withstand fire engulfment such that the valve
can still be closed during the early stage of an incident, and shall satisfy the requirements of 5.9.
The sealing element, to ensure internal leak tightness, shall be attached or otherwise assembled such that it
will not become dislocated under service conditions. The means to secure the sealing element shall not rely
only on cement or adhesive.
All valves shall close when turned clockwise and open when turned anti-clockwise. It is recommended that the
valve operating mechanism should be visibly marked with a portion of circle terminating by two arrows. One
arrow marked “–“(closure) and the other arrow marked “+”(opening) to indicate the result of the rotation (see
Figure 1).
Figure 1 — Hand wheel marking
4.3.2 Valve body
If the valve body is made of more than one part, precautions shall be taken to ensure that there can be no
unintentional dismantling. Disassembly shall require specialized equipment.
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
4.3.3 Sealing mechanism
The sealing mechanism shall ensure internal leak tightness.
4.3.4 Valve stem
The connection between the valve and the LPG cylinder shall be a threaded sealing system in accordance with
ISO 10920, ISO 11116-1 or any other connection system that provides an equivalent level of safety.
The design of the valve stem shall prevent leakage, loosening in service, and meet the requirements of 5.7.
The valve stem shall withstand the torque identified in Table 3, without causing such damage as to affect
performance, operating mechanism, internal tightness and external tightness. However, it should be noted
that such torque values should not be used for normal operational application.
4.3.5 Valve outlet
Valve outlets should conform to a standard such as ISO 5145, EN 12864, or any other connection system that
provides an equivalent level of safety.
In the case of a vapour/liquid dual valve, the following requirements shall apply:
⎯ The valve shall have separate vapour and liquid outlet connections. The wall thickness between the
passageways through the valve body shall not be less than 1 mm.
⎯ The liquid outlet shall be a different design from that of the vapour outlet. Valves with liquid and vapour
outlets shall have clear identification to distinguish between them, such as different connection geometry
and/or marking the outlet connections.
⎯ It shall not be possible to obtain a flow from the liquid outlet before a leak tight connection has been made.
4.3.6 Excess flow device (flow limiter)
Valves with passageways of cross-sectional area equivalent to or greater than a 3 mm diameter hole for liquid,
or an 8 mm diameter hole for vapour, shall be protected by an excess flow device (see 4.4.4).
4.4 Optional components
4.4.1 Pressure relief valve
A pressure relief valve shall be designed to operate in the vapour phase. Pressure relief valves for LPG
cylinders shall fulfil the requirements of a regional or national standard, e.g. EN 13953.
4.4.2 Eduction tube
The eduction tube shall be securely fitted to the valve to ensure that it does not dismantle during operation, for
example using adhesive, press fitting or any other mechanical means.
When a valve with an eduction tube is fitted to a cylinder, its presence and orientation should be clearly
identified.
4.4.3 Fixed liquid level gauge
Fixed level gauges that operate by means of temporarily venting a limited quantity of LPG whereupon the
change from vapour to liquid is detected, shall meet the following requirements:
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SIST EN ISO 15995:2010
ISO 15995:2006(E)
⎯ The cross-section of the passage way through the gauge body shall at some point be limited to an area
equivalent to or less than a 1,5 mm diameter hole.
⎯ The orifice shall be controlled by a vent screw.
⎯ The vent screw shall remain captive, or be permanently attached
...
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