SIST EN ISO 10297:2006
(Main)Transportable gas cylinders - Cylinder valves - Specification and type testing (ISO 10297:2006)
Transportable gas cylinders - Cylinder valves - Specification and type testing (ISO 10297:2006)
This International Standard specifies valve design, production and marking requirements, and type test methods for valves intended to be fitted to gas cylinders which convey compressed, liquefied or dissolved gases. This International Standard does not apply to valves for cryogenic equipment, for fire extinguishers or for liquefied petroleum gas (LPG). Additional specific requirements for valves fitted with pressure-reducing devices (see ISO 22435 and EN 738-3), residual pressure-retaining devices and non-return devices (see ISO 15996), and bursting discs and pressure-relief devices (see ISO 4126 and prEN 14513) are not covered by this International Standard.
Ortsbewegliche Gasflaschen - Flaschenventile - Spezifikation und Typprüfung (ISO 10297:2006)
Diese Internationale Norm enthält Angaben über die Ventilkonstruktion, die Herstellung und die Anforderungen an die Kennzeichnung und Verfahren zur Typprüfung von Ventilen, die an Gasflaschen für verdichtete, verflüssigte und unter Druck gelöste Gase angebracht werden.
Diese Internationale Norm gilt nicht für Ventile für tiefkalte Gase, für Feuerlöscher oder für Flüssiggas (LPG).
Zusätzliche Anforderungen an Ventile mit Druckminderung (siehe ISO 22435 und EN 738-3), an Restdruck- und Rückschlageinrichtungen (siehe ISO 15996) und Druckentlastungseinrichtungen und Berstscheiben (siehe ISO 4126 und EN 14513) werden nicht in dieser Norm erfasst.
ANMERKUNG Anforderungen an Ventile für Flüssiggas (LPG) sind in ISO 14245 und EN 13152 und in ISO 15995 und
EN 13153 enthalten. ISO 21011 enthält Anforderungen an Ventile für den Kryo-Betrieb. Weitere Anforderungen an Ventile für den Atemschutz sind in EN 144-1, EN 144-2 und EN 144-3 enthalten.
Bouteilles a gaz transportables - Robinets de bouteilles - Spécifications et essais de type (ISO 10297:2006)
L'ISO 10297:2006 spécifie la conception du robinet, les exigences de production et de marquage, et des méthodes d'essai de type pour les robinets destinés à être montés sur des bouteilles à gaz conçues pour transporter des gaz comprimés, liquéfiés ou dissous.
L'ISO 10297:2006 n'est pas applicable aux robinets pour équipements cryogéniques, pour extincteurs d'incendie ou pour gaz de pétrole liquéfiés (GPL).
Des exigences particulières supplémentaires pour les robinets montés avec des réducteurs de pression (voir ISO 22435 et EN 738-3), avec des dispositifs à pression résiduelle et des dispositifs antiretour (voir ISO 15996), des dispositifs à disque de rupture et des dispositifs limiteurs de pression (voir ISO 4126 et prEN 14513) ne sont pas couverts par l'ISO 10297:2006.
NOTE Les exigences relatives aux robinets pour gaz de pétrole liquéfiés (GPL) sont spécifiées dans l'ISO 14245 et l'EN 13152, et dans l'ISO 15995 et l'EN 13153. Les exigences relatives aux robinets pour réservoirs cryogéniques sont spécifiées dans l'ISO 21011. D'autres exigences spécifiques aux robinets pour appareils respiratoires sont spécifiées dans l'EN 144-1, l'EN 144-2 et l'EN 144-3.
Premične plinske jeklenke – Ventili za jeklenke – Specifikacija in preskus tipa (ISO 10297:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 10297:2006
01-maj-2006
1DGRPHãþD
SIST EN 849:1999
SIST EN 849:1999/A1:2000
SIST EN 849:1999/A2:2002
3UHPLþQHSOLQVNHMHNOHQNH±9HQWLOL]DMHNOHQNH±6SHFLILNDFLMDLQSUHVNXVWLSD ,62
Transportable gas cylinders - Cylinder valves - Specification and type testing (ISO
10297:2006)
Ortsbewegliche Gasflaschen - Flaschenventile - Spezifikation und Typprüfung (ISO
10297:2006)
Bouteilles a gaz transportables - Robinets de bouteilles - Spécifications et essais de type
(ISO 10297:2006)
Ta slovenski standard je istoveten z: EN ISO 10297:2006
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
SIST EN ISO 10297:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 10297:2006
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SIST EN ISO 10297:2006
EUROPEAN STANDARD
EN ISO 10297
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2005
ICS 23.060.40; 23.020.30 Supersedes EN 849:1996
English Version
Transportable gas cylinders - Cylinder valves - Specification and
type testing (ISO 10297:2006)
Bouteilles à gaz transportables - Robinets de bouteilles - Ortsbewegliche Gasflaschen - Flaschenventile -
Spécifications et essais de type (ISO 10297:2006) Spezifikation und Typprüfung (ISO 10297:2006)
This European Standard was approved by CEN on 19 October 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10297:2006: E
worldwide for CEN national Members.
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SIST EN ISO 10297:2006
EN ISO 10297:2006 (E)
Foreword
This document (EN ISO 10297:2006) 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 July 2006, and conflicting national standards
shall be withdrawn at the latest by July 2006.
This document supersedes EN 849:1996.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
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.
Endorsement notice
The text of ISO 10297:2006 has been approved by CEN as EN ISO 10297:2006 without any
modifications.
2
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SIST EN ISO 10297:2006
INTERNATIONAL ISO
STANDARD 10297
Second edition
2006-01-15
Transportable gas cylinders — Cylinder
valves — Specification and type testing
Bouteilles à gaz transportables — Robinets de bouteilles —
Spécifications et essais de type
Reference number
ISO 10297:2006(E)
©
ISO 2006
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
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© ISO 2006
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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Published in Switzerland
ii © ISO 2006 – All rights reserved
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols. 2
4 Valve design requirements . 4
4.1 General. 4
4.2 Description . 4
4.3 Materials . 4
4.4 Dimensions. 5
4.5 Valve connections . 5
4.6 Mechanical strength . 6
4.7 Valve operating mechanism . 7
4.8 Leakage. 7
4.9 Resistance to ignition. 8
5 Production requirements . 8
5.1 Manufacturing . 8
5.2 Cleaning. 8
6 Type test methods . 8
6.1 General. 8
6.2 Documentation. 9
6.3 Number of test samples . 9
6.4 Test report . 9
6.5 Ambient conditions . 9
6.6 Valve test pressure. 10
6.7 Test gas . 10
6.8 Test sequence . 10
6.9 Hydraulic pressure test. 11
6.10 Excessive torque tests. 11
6.11 Leak tightness tests . 11
6.12 Endurance test . 13
6.13 Flame impingement test. 13
6.14 Oxygen pressure surge test . 13
6.15 Acetylene flashback test. 16
7 Marking . 18
Annex A (normative) Valve impact test. 19
Annex B (informative) Example of test sequence. 21
Annex C (normative) Endurance test . 22
Bibliography . 26
© ISO 2006 – All rights reserved iii
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SIST EN ISO 10297:2006
ISO 10297:2006(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 10297 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2, Cylinder
fittings.
This second edition cancels and replaces the first edition (ISO 10297:1999), which has been technically
revised.
iv © ISO 2006 – All rights reserved
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
Introduction
Cylinder valves are fitted on gas cylinders used in, for example, industrial, medical and breathing applications.
Such valves have to perform safely and reliably for at least the cylinder test period, often in hazardous
situations.
Valves complying with this International Standard can be expected to perform satisfactorily under normal
services conditions.
This International Standard pays particular attention to:
⎯ suitability of materials;
⎯ dimensions of inlet connections;
⎯ dimensions of outlet connections;
⎯ safety (mechanical strength, endurance, resistance to ignition);
⎯ leakage;
⎯ cleanliness;
⎯ testing;
⎯ identification.
NOTE For satisfactory service, valves are manufactured and batch tested to ISO 14246.
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SIST EN ISO 10297:2006
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SIST EN ISO 10297:2006
INTERNATIONAL STANDARD ISO 10297:2006(E)
Transportable gas cylinders — Cylinder valves — Specification
and type testing
1 Scope
This International Standard specifies valve design, production and marking requirements, and type test
methods for valves intended to be fitted to gas cylinders which convey compressed, liquefied or dissolved
gases.
This International Standard does not apply to valves for cryogenic equipment, for fire extinguishers or for
liquefied petroleum gas (LPG).
Additional specific requirements for valves fitted with pressure-reducing devices (see ISO 22435 and
EN 738-3), residual pressure-retaining devices and non-return devices (see ISO 15996), and bursting discs
and pressure-relief devices (see ISO 4126 and prEN 14513) are not covered by this International Standard.
NOTE Requirements for valves for liquefied petroleum gas (LPG) are specified in ISO 14245 and EN 13152, and in
ISO 15995 and EN 13153. Requirements for valves for cryogenic vessels are specified in ISO 21011. Further specific
requirements for valves for breathing apparatus are specified in EN 144-1, EN 144-2 and EN 144-3.
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 407, Small medical gas cylinders — Pin-index yoke-type valve connections
ISO 5145, Cylinder valve outlets for gases and gas mixtures — Selection and dimensioning
ISO 8573-1, Compressed air — Part 1: Contaminants and purity classes
ISO 10156, Gases and gas mixtures — Determination of fire potential and oxidizing ability for the selection of
cylinder valve outlets
ISO 10286, Gas cylinders — Terminology
ISO 10692-1, Gas cylinders — Gas cylinder valve connections for use in the microelectronics industry —
Part 1: Outlet connections
ISO 15001, Anaesthetic and respiratory equipment — Compatibility with oxygen
© ISO 2006 – All rights reserved 1
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
3 Terms, definitions and symbols
For the purposes of this document, the terms, definitions and symbols given in ISO 10286 and the following
apply.
3.1
working pressure
p
w
〈compressed gases〉 settled pressure, at a uniform temperature of 15 °C, for a full gas cylinder with the
maximum permissible charge of compressed gas
NOTE 1 In this International Standard, it corresponds to the maximum working pressure of the cylinders for which the
valve is intended to be used.
NOTE 2 This definition does not apply to liquefied gases or dissolved gases (e.g. acetylene).
3.2
valve test pressure
p
vt
pressure applied to a valve through a gas (or a liquid medium for hydraulic pressure test only) during type
testing
3.3
external leak tightness
leak tightness to atmosphere (leakage in and/or leakage out) when the valve is open
NOTE See Figure 1.
p u p p W p
a a
Key
1 connection to customer equipment (closed)
a
Leakage in. p = internal pressure
b
p = atmospheric pressure
Leakage out. a
Figure 1 — External leak tightness
3.4
internal leak tightness
leak tightness across the valve seat (leakage in and/or leakage out) when the valve is closed
2 © ISO 2006 – All rights reserved
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
NOTE See Figure 2.
p u p p W p
a a
Key
1 connection to customer equipment (open)
a
Leakage in. p = internal pressure
b
p = atmospheric pressure
Leakage out. a
Figure 2 — Internal leak tightness
3.5
minimum closing torque
T
c
torque necessary to be applied to a valve operating mechanism to obtain internal leak tightness
3.6
resistance torque
maximum opening or closing torque (whichever is the lesser) applied to a valve operating mechanism which
the valve can withstand without damage
3.7
valve operating mechanism
mechanism which closes and opens the valve orifice
EXAMPLE A threaded valve spindle which, when rotated, raises and lowers a seal.
3.8
valve operating device
component which actuates the operating mechanism of the valve
EXAMPLE Handwheel or actuator.
3.9
total package mass
combined mass of a gas cylinder, its permanent attachment and its maximum allowed content
NOTE Valve and valve guard are examples of permanent attachments.
© ISO 2006 – All rights reserved 3
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
4 Valve design requirements
4.1 General
Valves shall operate satisfactorily over a range of service temperatures, from − 20 °C to + 65 °C in indoor and
outdoor environments. The range may be extended for short periods (e.g. during filling). Where higher or
lower service temperatures are required for longer periods, the purchaser shall specify accordingly. Valves
shall be capable of withstanding the mechanical stresses or chemical attack they can experience during
intended service, e.g. during storage, valving into cylinders, filling processes, transportation and end use of
the cylinder.
4.2 Description
This International Standard does not prescribe the components that a cylinder valve shall comprise. A cylinder
valve typically comprises the following:
a) body;
b) operating mechanism (to open and close the valve);
c) valve operating device;
d) means to ensure internal leak tightness;
e) means to ensure external leak tightness;
f) outlet connection(s) (to fill and discharge the cylinder);
g) inlet connection to the cylinder;
h) pressure-relief device (see ISO 11622 and/or other applicable standards, e.g. ISO 4126);
i) siphon tube;
j) screwed plug or cap on the outlet connection;
k) excess flow limiting device;
l) means to prevent the ingress of atmospheric air;
m) residual pressure retaining device (see ISO 15996);
n) outlet pressure reduction mechanism;
o) flow restricting orifice;
p) filter(s).
4.3 Materials
Metallic and non-metallic materials in contact with the gas shall be chemically and physically compatible with
the gas, under all intended operating conditions (see, for example, ISO 11114-1, ISO 11114-2 and material
specifications of the producer).
For medical and breathing applications, see ISO 15001, especially when selecting materials to reduce the risk
of toxic products of combustion/decomposition from non-metallic materials including lubricants.
4 © ISO 2006 – All rights reserved
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
In medical or breathing applications, components which are in contact with the gas shall not be plated or
coated unless means are provided to ensure that any particles generated by such surfaces are prevented
from entering the gas stream.
Ignition resistance in oxygen or other highly oxidizing gases (see ISO 10156) of non-metallic materials and
lubricants shall have been established by an appropriate test procedure (see ISO 11114-3).
Because of the risk of forming explosive acetylides, valves for acetylene may be manufactured from copper
based alloys only if the copper content does not exceed 65 % (by mass). The manufacturer shall not use any
procedure resulting in copper enrichment of the surface. For the same reasons, silver content of alloys, e.g.
for brazing, shall be limited for acetylene valves. The acceptable limit shall be preferably 43 % (by mass), but
in no case exceeding 50 %.
Non-metallic sealing materials for use with air, oxidizing (i.e. nitrous oxide) gases, oxygen and oxygen-
enriched gases shall be capable of withstanding an ageing sensitivity test.
4.4 Dimensions
4.4.1 External dimensions
If the valve is intended to be protected by a cap complying with ISO 11117, the external dimensions shall
comply with Figure 3. If the valve is of the ‘pin-index yoke-type’ for medical gases, the relevant external
dimensions shall be in accordance with ISO 407.
4.4.2 Internal dimensions
The bore of the valve shall be adequate to meet the flow requirement (including that of any pressure-relief
device fitted) without unacceptably reducing the strength of the stem connection.
4.5 Valve connections
Valves are normally connected to the cylinder by means of an inlet connection, e.g. taper thread in
accordance with ISO 10920 for 25E or ISO 11116-1 for 17E, or parallel male thread in accordance with, for
example, ISO 15245-1 for M30 or any relevant standard. They are connected to the filling and utilization
appliances by means of one or more outlet connections complying with an accepted International Standard
(e.g. ISO 407, ISO 5145, ISO 10692-1) or any relevant standard.
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
Key
r = 32,5 mm
max
R = 38 mm
max
h = 90 mm
max
L = 125 mm
max
When the axes of the valve stem thread and handwheel do not coincide, the distance between the two axes
shall be added to r .
max
R shall be measured to the part of the valve furthest from the stem axis and includes any outlet plugs or
max
caps if fitted.
NOTE 1 h represents the length of the lower part of the valve, when the maximum radius is greater than the radius of
the handwheel.
NOTE 2 L is the maximum length of a valve in the closed position when not fitted to a cylinder.
max
Figure 3 — Maximum dimensions for cylinder valves protected by a cap in accordance with ISO 11117
4.6 Mechanical strength
4.6.1 Hydraulic pressure test
Cylinder valves shall be capable of withstanding for 2 min without permanent deformation, leak or rupture a
hydraulic pressure test of 1,5 times the test pressure of the cylinder to which the valve is designed to be
connected.
This pressure test shall be carried out at 450 bar for acetylene.
The hydraulic pressure test is given in 6.9.
4.6.2 Resistance to mechanical impact
For a valve used in a cylinder with water capacity greater than 5 l, and if the valve is not intended to be
protected during transport by a cap or guard complying with ISO 11117, it shall withstand a mechanical impact
with a minimum velocity of 3 m/s and an impact energy in joules equal to 3,6 times the total package mass
(cylinder plus content) in kilograms or 40 J, whichever is the greater.
The impact test is given in Annex A.
6 © ISO 2006 – All rights reserved
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
4.7 Valve operating mechanism
The valve operating mechanism shall fulfil the following requirements.
a) If it closes the valve by rotation this shall be in a clockwise direction.
b) It shall be possible to open and close the valve at pressures up to the cylinder test pressure.
c) It shall be designed in such a way that its setting cannot be inadvertently altered.
d) It shall be designed to ensure that lubricants that are not oxygen-compatible (if used) do not come into
contact with highly oxidizing gases, as defined in ISO 10156 (see also 4.3).
e) For valves for highly oxidizing gases, as defined in ISO 10156, full opening of the valve orifice shall not
result in an excessively rapid pressure surge.
NOTE This is normally achieved by a design which requires more than one turn to achieve full opening.
Compliance with a) to e) shall be checked by visual inspection.
f) It shall function satisfactorily after 2 000 opening and closing cycles at p without replacement of the
vt
sealing device.
The endurance test with relevant parameters is given in 6.12.
g) For handwheel operated valves with handwheels of 65 mm diameter or more, or for valves operated by a
key,
⎯ the torque required to close the valve and to meet the requirements of 4.8 shall be not greater than
7 N.m (a higher torque may apply for key operated valves) after completion of the endurance test;
⎯ the valve shall withstand a torque of 20 N.m without permanent deformation;
⎯ the closing torque, at failure, shall be not less than 25 N.m. At failure, no pressure retaining
components shall have failed.
NOTE For valves with smaller handwheels, lower torque levels can apply (see 6.10 and 6.12).
h) The operating torque, at failure, shall be less than the torque required to unscrew the operating
mechanism from the valve body.
The excessive torque tests specified in g) and h) are given in 6.10.
i) It shall be designed to permit the closure of the valve after exposure to a flame.
The flame impingement test is given in 6.13.
j) For acetylene valves, it shall be designed to permit the closure of the valve after exposure to an acetylene
flashback test.
The acetylene flashback test is given in 6.15.
4.8 Leakage
3
The internal leakage shall not exceed 6 cm /h (at nominal conditions: 20 °C and 1013 mbar) over the range of
pressures and temperatures (with a minimum of 0,1 bar for flammable and toxic gases or 0,5 bar in other
cases) specified in the test, with the operating mechanism in the ‘closed’ position.
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SIST EN ISO 10297:2006
ISO 10297:2006(E)
3
The external leakage shall not exceed 6 cm /h over the range of pressures and temperatures specified in the
test, with the operating mechanism in any position between and including the ‘fully open’ and the ‘closed’
positions.
The leak tightness tests are given in 6.11.
NOTE For pure or toxic gases, lower permitted leakage rates can be agreed upon between manufacturer and
–7 3
customer. For electronic applications, the permitted leakage rates are typically 1 × 10 He atm cm /s.
The valve shall meet the requirements for leakage given above after 2000 opening and closing cycles at p .
vt
The endurance tests are given in 6.12.
4.9 Resistance to ignition
All valves designed to be fitted to cylinders for oxygen and other gases with oxidizing potential greater than air
(determined in accordance with ISO 10156) shall not ignite or show internal scorching damage when
submitted to an oxygen pressure surge test.
The oxygen pressure surge test is given in 6.14.
5 Production requirements
5.1 Manufacturing
The valve body shall be manufactured by a process that will ensure the reproducibility of the mechanical
characteristics necessary to meet the requirements specified in this International Standard. The anisotropy of
the material shall be considered.
NOTE See ISO 14246.
5.2 Cleaning
Cylinder valves shall be supplied clean to meet the requirements of the intended service. Cylinder valves for
all medical gases shall be supplied cleaned of oil, grease and particulate matter in accordance with ISO 15001.
6 Type test methods
6.1 General
Before valves are introduced into service, they shall be submitted for type testing. A type test is valid for a
given family of valves with the same basic design.
Variations to connections do not require further type testing.
Changes to the basic dimensions of components or changes o
...
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