ISO/FDIS 17268-1
(Main)Gaseous hydrogen land vehicle refuelling connection devices — Part 1: Flow capacities up to and including 120 g/s
Gaseous hydrogen land vehicle refuelling connection devices — Part 1: Flow capacities up to and including 120 g/s
This document defines the design, safety and operation characteristics of gaseous hydrogen land vehicle (GHLV) refuelling connectors. GHLV refuelling connectors consist of the following components, as applicable: — receptacle and protective cap (mounted on vehicle); — nozzle; — communication hardware. This document is applicable to refuelling connectors which have nominal working pressures or hydrogen service levels up to 70 MPa. This document is not applicable to refuelling connectors dispensing blends of hydrogen with natural gas.
Dispositifs de raccordement pour le ravitaillement des véhicules terrestres en hydrogène gazeux — Partie 1: Capacités de débit jusqu'à 120 g/s inclus
Le présent document définit les caractéristiques de conception, de sécurité et d'exploitation des connecteurs destinés au ravitaillement des véhicules terrestres à hydrogène gazeux (GHLV). Les connecteurs de ravitaillement des GHLV sont constitués des éléments suivants, selon le cas: — un réceptacle et un bouchon de protection (montés sur le véhicule); — un pistolet; — un module de communication. Le présent document s'applique aux connecteurs de ravitaillement ayant une pression de service nominale ou un niveau de service d'hydrogène ne dépassant pas 70 MPa. Le présent document ne s'applique pas aux connecteurs de ravitaillement servant à distribuer des mélanges d'hydrogène et de gaz naturel.
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FINAL DRAFT
International
Standard
ISO/TC 197
Gaseous hydrogen land vehicle
Secretariat: SCC
refuelling connection devices —
Voting begins on:
2025-02-04
Part 1:
Flow capacities up to and including
Voting terminates on:
2025-04-01
120 g/s
Dispositifs de raccordement pour le ravitaillement des véhicules
terrestres en hydrogène gazeux —
Partie 1: Capacités de débit jusqu'à 120 g/s inclus
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
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TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 197
Gaseous hydrogen land vehicle
Secretariat: SCC
refuelling connection devices —
Voting begins on:
Part 1:
Flow capacities up to and
Voting terminates on:
including 120 g/s
Dispositifs de raccordement pour le ravitaillement des véhicules
terrestres en hydrogène gazeux —
Partie 1: Capacités de débit jusqu'à 120 g/s inclus
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.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ii
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General construction requirements . 4
5 Nozzles . 7
6 Receptacles . 9
7 Design verification test procedures. .10
7.1 General requirements .10
7.2 Test conditions .10
7.3 Nozzle tests . .10
7.4 Receptacle tests .10
7.5 User — Machine interface test .10
7.6 Dropping test .11
7.7 Leakage at room temperature test .11
7.8 Valve operating handle test . 12
7.9 Receptacle vibration resistance test . 12
7.10 Abnormal loads test . 12
7.11 Low and high temperatures test . 13
7.11.1 Purpose . 13
7.11.2 General . 13
7.11.3 Leakage tests . 13
7.12 Operation tests .14
7.13 Durability and maintainability test .14
7.13.1 Purpose .14
7.13.2 Nozzle durability test .14
7.13.3 Receptacle check valve durability test . 15
7.13.4 Receptacle durability test . 15
7.13.5 Connector durability test.16
7.14 Sealing material aging test .16
7.14.1 Purpose .16
7.14.2 Oxygen aging test procedure .16
7.14.3 Ozone aging test procedure .16
7.15 Non-metallic material hydrogen resistance test .16
7.16 Electrical resistance test .17
7.17 Hydrostatic strength test .17
7.18 Corrosion resistance test .17
7.18.1 Purpose .17
7.18.2 General .17
7.18.3 Nozzle test .17
7.18.4 Receptacle test .17
7.19 Deformation test .18
7.20 Contamination test .18
7.21 Thermal cycle test .18
7.22 Misconnected nozzle test .18
7.23 Upward/downward compatibility test . 20
7.23.1 General . 20
7.23.2 Upward/downward compatibility test . 20
7.23.3 Other fuels receptacles incompatibility test . 20
7.24 Washout test . 20
7.25 User abuse test .21
7.26 Cold gas test .21
7.27 Rocking test . 22
iii
7.28 Communication test . 23
8 Instructions .23
9 Marking . .24
9.1 Mandatory information .24
9.2 Non-mandatory information .24
Annex A (normative) Receptacle/nozzle interface envelope .25
A
...
ISO TC 197
ISO/DIS /FDIS 17268-1: 2023(E)
ISO/TC 197
Secretariat: SCC
2023-12-27
Gaseous hydrogen land vehicle refuelling connection devices —
Part 1:
Flow capacities up to and including 120 g/s
Dispositifs de raccordement pour le ravitaillement des véhicules terrestres en hydrogène gazeux – —
Partie 1: Capacités de débit jusqu'à 120 g/s inclus
FDIS stage
ISO/DISFDIS 17268-1:2023(E2025(en)
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'sISO’s member body in the country of the requester.
ISO Copyright Officecopyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: copyright@iso.org
E-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland.
ii © ISO 2023 – All rights reserved
ii
ISO/DISFDIS 17268-1:2023(E2025(en)
Contents
Foreword . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General construction requirements . 4
5 Nozzles . 8
6 Receptacles . 10
7 Design verification test procedures. . 11
8 Instructions . 29
9 Marking . 29
Annex A (normative) Receptacle/nozzle interface envelope . 31
Annex B (normative) Hydrogen receptacles . 33
Annex C (normative) Loose fit test fixtures . 54
Annex D (normative) Tight fit test fixtures . 73
Annex E (normative) Wear pattern test fixtures . 93
Annex F (informative) Example Hex Design . 1
Annex G (normative) Pressure drop test . 4
Annex H (normative) Required test fixtures . 10
Bibliography . 12
Foreword . 4
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General construction requirements . 4
5 Nozzles . 7
6 Receptacles . 9
7 Design verification test procedures. . 10
8 Instructions . 24
9 Marking . 25
Annex A (normative) Receptacle/nozzle interface envelope . 26
Annex B (normative) Hydrogen receptacles . 28
Annex C (normative) Loose fit test fixtures . 37
Annex D (normative) Tight fit test fixtures . 44
iii
ISO/DISFDIS 17268-1:2023(E2025(en)
Annex E (normative) Wear pattern test fixtures . 51
Annex F (informative) Example Hex Design . 58
Annex G (informative) Pressure drop test . 59
G.1 Pressure drop test . 59
Annex H (normative) Required test fixtures . 62
Bibliography . 64
iv © ISO 2023 – All rights reserved
iv
ISO/DISFDIS 17268-1:2023(E2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
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.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 197, Hydrogen technologies, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 268, Cryogenic vessels
and specific hydrogen technologies applications, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This first edition of ISO 17268-1, together with ISO 17268-2, cancels and replaces ISO 17268:2020.
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.
Field Code Changed
v
DRAFT INTERNATIONAL STANDARD ISO/DIS 17268-1:2023(E)
Gaseous hydrogen land vehicle refuelling connection devices — —
Part 1:
Flow capacities up to and including 120 g/s
1 Scope
This document definesspecifies the design, safety and operation characteristics of gaseous hydrogen land
vehicle (GHLV) refuelling connectors.
GHLV refuelling connectors consist of the following components, as applicable:
— — receptacle and protective cap (mounted on vehicle);
— — nozzle;
— — communication hardware.
This document is applicable to refuelling connectors which have nominal working pressures or hydrogen
service levels up to 70 MPa and maximum flow rates up to 120 g/s.
This document is not applicable to refuelling connectors dispensing blends of hydrogen with natural gas.
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 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 1431--1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and
dynamic strain testing
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
ISO 12103--1, Road vehicles — Test contaminants for filter evaluation — Part 1: Arizona test dust
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/obphttps://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
ISO/DIS 17268-1:2023(E)
3.1 3.1
communication hardware
infrared data association (IrDA) components which are used to transmit signals from the vehicle
(receptacle) (3.19)(3.19) to the dispenser (nozzle) (3.14)(3.14) and designed to meet SAE J2799 or
equivalent
3.2 3.2
component pressure rating
maximum pressure at which it is permissible to operate a component as specified by the manufacturer
at a specified temperature
Note 1 to entry: See Table 1Table 1 for required component pressure ratings for various pressure classes
(3.16)(3.16) of fuelling connectors (3.3).(3.3).
Note 2 to entry: Further guidance on dispenser pressure terminology is included in ISO 19880-1.
Table 1 — Dispensing system pressure levels and refuelling connector ratings
NWP (3.13)(3.13) of Pressure class Maximum operating Dispensing system
vehicle (3.16)(3.16) pressure maximum allowable
(receptacle) (MOP) (3.12)(3.12) working pressure
(3.19)(3.19)
(MAWP) (3.11)(3.11)
or
Minimum dispenser
HSL (3.9)(3.9) of
component pressure
dispenser
rating
(nozzle) (3.14)(3.14)
Equal to NWP of the 1,25 × HSL/1,25 × NWP 1,375 × HSL
vehicle storage system
Highest fill pressure Highest permissible
per vehicle label
during normal fuelling setpoint for dispenser
pressure protection in
ISO 19880-1:2020,
8.2.2.3
a
35 MPa H35 or H35MF 43,75 MPa 48,125 MPa
70 MPa H70 87,5 MPa 96,25 MPa
a
Medium-flow connectors for heavy-duty commercial vehicles.
3.3 3.3
connector
joined assembly of nozzle (3.14)(3.14) and receptacle (3.19)(3.19) which permits the transfer of
hydrogen
3.4 3.4
cycle
process of making a positive connection between the nozzle (3.14)(3.14) and the receptacle (3.19),(3.19),
pressurizing to the maximum operating pressure (3.12),(3.12), depressurizing and disconnecting
3.5 3.5
dry air
air with a dew point adequate to prevent condensation during testing
2 © ISO 2023 – All rights reserved
ISO/DIS 17268-1:2023(E)
3.6 3.6
dry helium
helium with a dew point adequate to prevent condensation during testing and at least 99 % pure
3.7 3.7
dry hydrogen
hydrogen which meets or exceeds the quality level in ISO 14687
3.8 3.8
hydrogen grade
level of hydrogen quality based upon ISO 14687
3.9 3.9
hydrogen service level
HSL
pressure level used to characterize the hydrogen service of the dispenser based on t
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