ISO 15995:2021/Amd 1:2024
(Amendment)Gas cylinders — Specifications and testing of LPG cylinder valves — Manually operated — Amendment 1
Gas cylinders — Specifications and testing of LPG cylinder valves — Manually operated — Amendment 1
Bouteilles à gaz — Spécifications et essais pour valves de bouteilles de GPL — Fermeture manuelle — Amendement 1
General Information
Relations
Standards Content (Sample)
International
Standard
ISO 15995
Third edition
Gas cylinders — Specifications and
2021-06
testing of LPG cylinder valves —
Manually operated
AMENDMENT 1
2024-08
AMENDMENT 1
Bouteilles à gaz — Spécifications et essais pour valves de
bouteilles de GPL — Fermeture manuelle
AMENDEMENT 1
Reference number
ISO 15995:2021/Amd.1:2024(en) © ISO 2024
ISO 15995:2021/Amd.1:2024(en)
© ISO 2024
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Published in Switzerland
ii
ISO 15995:2021/Amd.1:2024(en)
Foreword
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in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
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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).
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.
iii
ISO 15995:2021/Amd.1:2024(en)
Gas cylinders — Specifications and testing of LPG cylinder
valves — Manually operated
AMENDMENT 1
Normative references
Add the following normative reference:
MIL -STD -810G: 2008, Department of Defence Test Method Standard, Environmental Engineering Considerations
and Laboratory Tests
4.2
Add the following new subclause:
4.2.5 Adhesives
Where used, adhesives shall be proven compatible with LPG in accordance with recognized international,
regional or national standards.
4.3.1, last paragraph
Replace paragraph with the following:
All valves shall close when turned clockwise and open when turned anti-clockwise. The hand wheel shall
be visibly marked with a portion(s) of circle terminating by an arrow for each direction. One arrow shall be
marked with “–" or "close” (closure) and the other arrow with “+” or "open" (opening) to indicate the result
of the rotation.
4.3.3, first sentence
Replace sentence with the following:
Valve inlet connections shall conform to an international, regional or national standard or proprietary
designs that have been qualified to an acceptable industry standard.
4.3.3, NOTE
Replace NOTE with the following:
NOTE 1 Valve inlet connection standards are, for example, ISO 11363-1 and ISO 15245-1.
NOTE 2 Qualification procedures for proprietary valve inlet connection designs are, for example, given in
ISO 10692-2.
ISO 15995:2021/Amd.1:2024(en)
4.3.3, third paragraph
Replace the reference "Table 3" with "Table 4".
4.3.4, first sentence
Replace sentence with the following:
Valve outlet connections shall conform to an international, regional or national standard or proprietary
designs that have been qualified to an acceptable industry standard.
4.3.4, NOTE
Replace NOTE with the following:
NOTE 1 Valve outlet connection standards are, for example, ISO 5145 and EN 15202.
NOTE 2 Qualification procedures for proprietary valve outlet connection designs are, for example, given in CGA V-1.
4.4.1
Add the following paragraph at the end of the subclause:
Where threaded joints are used within the valve, an anaerobic sealant may be used if proven compatible
with LPG in accordance with recognized international, regional (e.g. EN 751-1) or national standards.
4.4.4
Add the following indents to the end of the list:
d) There shall be sufficient thread engagement between the vent screw and the fixed liquid level gauge to
allow metal to metal contact in the event of absence of the seal.
e) The dip tube shall be securely fitted to the valve to ensure that it does not disassemble during installation
or operation.
EXAMPLE Using adhesive, press fitting or any other mechanical means.
4.4.9
Add the following paragraph at the end of the subclause:
The sediment tube shall be securely fitted to the valve to ensure that it does not disassemble during
installation or operation.
EXAMPLE Using adhesive, press fitting or any other mechanical means.
5.1
Delete subclause numbering "5.1.1" and retain text as normal style.
ISO 15995:2021/Amd.1:2024(en)
5.1, third paragraph
Replace the reference "Table 1" with "Table 2".
5.1
Add the following text as new fifth paragraph:
For valves designed to incorporate pressure relief valves, their ports shall be plugged or sealed, or their
setting shall be adjusted to allow applying the test pressure without activating the pressure relief valve.
5.1.2
Delete subclause numbering "5.1.2" and replace paragraph and list with the following text and Table 1:
Changes or variations to the valve configuration which can adversely affect valve performance shall require
additional inspection and tests in accordance with Table 1, using the number of test samples quoted in
Table 2.
ISO 15995:2021/Amd.1:2024(en)
Vibration including subse-
quent external and internal
leak tightness
Non-return valve
Excess flow valve
Examination of disassembled
valves
External and internal leak
tightness at low, high and
room temperature
Endurance – Part 1 and Part 2
External and internal leak
tightness at room tempera-
ture
Excessive torque tests includ-
ing subsequent internal/ex-
ternal leak tightness
Impact including subsequent
internal leak tightness
Hand wheel fire exposure
Valve stem including subse-
quent external and internal
leak tightness
Hydraulic pressure includ-
ing subsequent external and
internal leak tightness
Inspection
Table 1 — Inspections and tests required after changes or variations to the valve configuration
Repetition of any tests to be decided on a case by case basis depending on
Changes of the material of the valve body
changes of chemical composition and mechanical properties.
Changes of the material of the handwheel x x x x x
Change of the handwheel diameter of a regular valve design No tests required.
Increase of the handwheel diameter of a special valve design
x
in accordance with Annex A
Change of configuration from special valve design to regular
x x x x
valve design
Changes of the basic design dimensions of the internal valve
Repetition of a test to be decided on a case by case basis, depending on the
components [e.g. spindle diameter, spindle thread pitch, seat
change.
diameter, dimension of o-ring(s)]
Changes of metallic material of the valve operating mecha- Repetition of a test to be decided on a case by case basis, depending on the
nism components (e.g. spindle, springs) change.
Change of non-metallic material with regard to composition
or hardness of internal valve components [e.g. seals, o-ring(s) x x x x x x x x x
and lubricants]
Changes of the thread and/or any dimensions of the valve
a a a
x x x
inlet connection
Changes of the thread and/or any dimension of the valve
b
x
outlet connection
a
Repetition of a test to be decided on a case by case basis, depending on the change.
b
Repetition of a test to be decided on a case by case basis, depending on the change but in open position only.
c
If the strength of the inlet connection in shear and/or torsion is reduced.
d
Only with the valve operating mechanism in the open position and the outlet not plugged.
e
To be decided on a case by case basis depending on the configuration.
ISO 15995:2021/Amd.1:2024(en)
Vibration including subse-
quent external and internal
leak tightness
Non-return valve
Excess flow valve
Examination of disassembled
valves
External and internal leak
tightness at low, high and
room temperature
Endurance – Part 1 and P
...
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