Road vehicles - Compressed natural gas (CNG) refuelling connector (ISO 14469:2017)

ISO 14469:2017 specifies CNG refuelling nozzles and receptacles constructed entirely of new and unused parts and materials, for road vehicles powered by compressed natural gas. A CNG refuelling connector consists of, as applicable, the receptacle and its protective cap (mounted on the vehicle) and the nozzle.
ISO 14469:2017 is applicable only to such devices designed for a service pressure of 20 MPa (200 bar) and 25 MPa (250 bar), to those using CNG according to ISO 15403‑1 and ISO 15403‑2 and having standardized mating components, and to connectors that prevent natural gas vehicles from being fuelled by dispensers with service pressures higher than that of the vehicle, while allowing them to be fuelled by dispensers with service pressures less than or equal to the vehicle fuel system service pressure.
ISO 14469:2017 refers to service pressures of 20 MPa and 25 MPa for:
- size 1: B200 and B250;
- size 2: C200 and C250.

Straßenfahrzeuge - Betankungsanschluss für komprimiertes Erdgas (CNG) (ISO 14469:2017)

Véhicules routiers - Connecteur de remplissage en gaz naturel comprimé (GNC) (ISO 14469:2017)

ISO 14469:2017 spécifie les pistolets et les réceptacles de remplissage en GNC entièrement constitués de pièces et matériaux neufs et non usagés, pour les véhicules routiers fonctionnant au gaz naturel comprimé. Un connecteur de remplissage en GNC comprend, le cas échéant, le réceptacle et son bouchon de protection (fixés sur le véhicule) ainsi que le pistolet.
ISO 14469:2017 est uniquement applicable aux appareils conçus pour fonctionner à une pression de service de 20 MPa (200 bar) et de 25 MPa (250 bar), aux appareils utilisant du GNC selon l'ISO 15403-1 et l'ISO 15403-2 et ayant des composants de raccordement standardisés, ainsi qu'aux connecteurs qui empêchent les véhicules au gaz naturel d'être ravitaillés par des bornes de remplissage dont les pressions de service dépassent celles du véhicule, mais qui leur permettent d'être ravitaillés par des bornes dont les pressions de service sont inférieures ou égales à la pression de service des systèmes de carburant des véhicules.
ISO 14469:2017 se réfère à des pressions de service de 20 MPa et 25 MPa pour:
- taille 1: B200 et B250;
- taille 2: C200 et C250.

Cestna vozila - Priključek za polnjenje s stisnjenim zemeljskim plinom (CNG) (ISO 14469:2017)

Standard ISO 14469:2017 določa šobe in vtičnice za polnjenje stisnjenega zemeljskega plina (CNG), ki so v celoti izdelane iz novih in neuporabljenih delov in materialov, za cestna vozila, ki jih poganja stisnjeni zemeljski plin. Priključek za polnjenje stisnjenega zemeljskega plina je sestavljen iz vtičnice in zaščitnega pokrova (nameščenega na vozilu) ter šobe, kot je primerno.
Standard ISO 14469:2017 se uporablja samo za naprave, načrtovane za delovanje pri delovnem tlaku 20 MPa (200 barov) in 25 MPa (250 barov), naprave, ki uporabljajo stisnjeni zemeljski plin skladno s standardoma ISO 15403 1 in ISO 15403 2 ter ki imajo standardizirane stikovne komponente, in priključke, ki preprečujejo polnjenje vozil, ki jih poganja zemeljski plin, s točilnimi napravami z delovnim tlakom, višjim od vozila, pri čemer omogočajo polnjenje teh vozil s točilnimi napravami z delovnim tlakom, manjšim ali enakim od delovnega tlaka sistema za gorivo vozila.
Standard ISO 14469:2017 se nanaša na delovne tlake 20 MPa in 25 MPa za:
– velikost 1: B200 in B250;
– velikost 2: C200 in C250.

General Information

Status
Published
Public Enquiry End Date
31-Jul-2017
Publication Date
05-Oct-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-Sep-2017
Due Date
04-Dec-2017
Completion Date
06-Oct-2017

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SLOVENSKI STANDARD
SIST EN ISO 14469:2017
01-november-2017

Cestna vozila - Priključek za polnjenje s stisnjenim zemeljskim plinom (CNG) (ISO

14469:2017)

Road vehicles - Compressed natural gas (CNG) refuelling connector (ISO 14469:2017)

Straßenfahrzeuge - Betankungsanschluss für komprimiertes Erdgas (CNG) (ISO
14469:2017)

Véhicules routiers - Connecteur de remplissage en gaz naturel comprimé (GNC) (ISO

14469:2017)
Ta slovenski standard je istoveten z: EN ISO 14469:2017
ICS:
43.060.40 Sistemi za gorivo Fuel systems
75.060 Zemeljski plin Natural gas
SIST EN ISO 14469:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 14469:2017
---------------------- Page: 2 ----------------------
SIST EN ISO 14469:2017
EN ISO 14469
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 43.060.40
English Version
Road vehicles - Compressed natural gas (CNG) refuelling
connector (ISO 14469:2017)
Véhicules routiers - Connecteur de remplissage en gaz
naturel comprimé (GNC) (ISO 14469:2017)
This European Standard was approved by CEN on 11 September 2017.

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-CENELEC 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-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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14469:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 14469:2017
EN ISO 14469:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 14469:2017
EN ISO 14469:2017 (E)
European foreword

The text of ISO 14469:2017 has been prepared by Technical Committee ISO/TC 22 “Road vehicles” of

the International Organization for Standardization (ISO) and has been taken over as EN ISO 14469:2017

by Technical Committee CEN/TC 301 “Road vehicles” the secretariat of which is held by AFNOR.

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 March 2018, and conflicting national standards shall

be withdrawn at the latest by March 2018.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 14469:2017 has been approved by CEN as EN ISO 14469:2017 without any modification.

---------------------- Page: 5 ----------------------
SIST EN ISO 14469:2017
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SIST EN ISO 14469:2017
INTERNATIONAL ISO
STANDARD 14469
First edition
2017-01
Road vehicles — Compressed natural
gas (CNG) refuelling connector
Véhicules routiers — Connecteur de remplissage en gaz naturel
comprimé (GNC)
Reference number
ISO 14469:2017(E)
ISO 2017
---------------------- Page: 7 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General construction requirements ................................................................................................................................................. 2

5 Nozzles ............................................................................................................................................................................................................................ 3

6 Standard receptacle dimensions ......................................................................................................................................................... 4

6.1 Standard receptacle dimensions Size 1 (B200, B250) .......................................................................................... 4

6.2 Standard receptacle dimensions size 2 (C200, C250) ........................................................................................... 7

7 Receptacles ..............................................................................................................................................................................................................10

8 Instructions .............................................................................................................................................................................................................11

9 Marking .......................................................................................................................................................................................................................11

10 Tests ................................................................................................................................................................................................................................12

10.1 General requirements ....................................................................................................................................................................12

10.2 User interface ........................................................................................................................................................................................12

10.3 Impact resistance ...............................................................................................................................................................................12

10.4 Receptacle protective caps.........................................................................................................................................................13

10.5 Leakage at room temperature ................................................................................................................................................13

10.5.1 Nozzle .....................................................................................................................................................................................13

10.5.2 Receptacle ...........................................................................................................................................................................13

10.6 Valve operating handle ..................................................................................................................................................................14

10.7 Abnormal loads ...................................................................................................................................................................................14

10.7.1 General...................................................................................................................................................................................14

10.7.2 Test in the unpressurized condition ............................................................................................................15

10.7.3 Test in the pressurized condition ...................................................................................................................15

10.8 Rocking/Twisting ..............................................................................................................................................................................15

10.9 Mounting hardware torque .......................................................................................................................................................16

10.10 Low and high temperatures ......................................................................................................................................................16

10.10.1 General...................................................................................................................................................................................16

10.10.2 Leakage test ...................................................................... .................................................................................................16

10.10.3 Operation test ..................................................................................................................................................................17

10.11 Durability ..................................................................................................................................................................................................17

10.11.1 Durability cycling .........................................................................................................................................................17

10.11.2 Oxygen ageing .................................................................................................................................................................23

10.11.3 Seal material compatibility ..................................................................................................................................23

10.11.4 Ten-day moist ammonia-air stress cracking .........................................................................................24

10.11.5 Electrical resistance ...................................................................................................................................................24

10.12 Hydrostatic strength .......................................................................................................................................................................24

10.13 Corrosion resistance .......................................................................................................................................................................24

10.13.1 Nozzles ..................................................................................................................................................................................25

10.13.2 Receptacles ........................................................................................................................................................................25

10.14 Deformation ...........................................................................................................................................................................................25

10.15 Non-igniting evaluation ................................................................................................................................................................25

10.16 Pressure-tight protective cap (PTPC) ...............................................................................................................................25

10.16.1 General...................................................................................................................................................................................25

10.16.2 Leakage .................................................................................................................................................................................26

10.16.3 Durability cycling .........................................................................................................................................................26

10.16.4 Abuse.......................................................................................................................................................................................27

10.16.5 Impact resistance .........................................................................................................................................................27

© ISO 2017 – All rights reserved iii
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SIST EN ISO 14469:2017
ISO 14469:2017(E)

10.16.6 Corrosion resistance ..................................................................................................................................................27

10.16.7 Hydrostatic strength ..................................................................................................................................................27

Annex A (informative) Nozzle characteristics..........................................................................................................................................28

Annex B (normative) Receptacle text fixture............................................................................................................................................29

Bibliography .............................................................................................................................................................................................................................37

iv © ISO 2017 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(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.

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 documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2. www .iso .org/ directives

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received. www .iso .org/ patents

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT), see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific

aspects for gaseous fuels.

This first edition of ISO 14469:2016 cancels and replaces the first edition of ISO 14469-1:2004,

ISO 14469-2:2007 and ISO 14469-3:2006, which have been technically revised.
© ISO 2017 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(E)
Introduction

This document was developed to use in the examination, testing and certification of newly produced

compressed natural (CNG) gas vehicle fuelling nozzles and receptacles and, as such, applies only to the

nozzles and receptacles used in CNG fuelling systems, and not to the system itself.

A nozzle certified to this International Standard will be functionally compatible from a safety and

performance perspective with all listed receptacles of compatible profile and system pressure. Similarly,

a certified receptacle will be functionally compatible from a safety and performance perspective with

all listed nozzles of compatible profile and system pressure.

As there may eventually be many different kinds of nozzles and receptacles available from a variety

of manufacturers which, for safety reasons, have to be all compatible with one another, this document

specifies a series of receptacle profiles. These standard profiles incorporate the design specifications

(mating materials, geometry and tolerances) which may be considered in the certification of a submitted

nozzle or receptacle.

The construction and performance of nozzles and receptacles are based on the observation that three

main parameters affect user safety and system compatibility.
a) Service pressure

All nozzles and receptacles are designed to have a service pressure of either 20 MPa (200 bar) for B200

and C200 connectors or 25 MPa (250 Bar) for B250 and C250 connectors.
b) Design life

Frequency of use is the second parameter to be considered. Since frequency of use will differ with the

nozzle/receptacle application (i.e. public sector, fleet employee and residential), all receptacles will be

tested at 10 000 connect/disconnect cycles for compliance with this document. In addition, all nozzles

will be tested according to the following frequency use classifications, as applicable:

— Class A Nozzle, specifying high frequency use, with a cycle life of 100 000 cycles and equating to

approximately 100 fills per day for three years;

— Class B Nozzle, specifying medium frequency use, with a cycle life of 20 000 cycles and equating to

approximately 10 fills per day for five years.
c) Training
Operator training required is in accordance with national requirements.
vi © ISO 2017 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 14469:2017
INTERNATIONAL STANDARD ISO 14469:2017(E)
Road vehicles — Compressed natural gas (CNG) refuelling
connector
1 Scope

This document specifies CNG refuelling nozzles and receptacles constructed entirely of new and unused

parts and materials, for road vehicles powered by compressed natural gas. A CNG refuelling connector

consists of, as applicable, the receptacle and its protective cap (mounted on the vehicle) and the nozzle.

This document is applicable only to such devices designed for a service pressure of 20 MPa (200 bar)

and 25 MPa (250 bar), to those using CNG according to ISO 15403-1 and ISO 15403-2 and having

standardized mating components, and to connectors that prevent natural gas vehicles from being

fuelled by dispensers with service pressures higher than that of the vehicle, while allowing them to

be fuelled by dispensers with service pressures less than or equal to the vehicle fuel system service

pressure.
This document refers to service pressures of 20 MPa and 25 MPa for:
— size 1: B200 and B250;
— size 2: C200 and C250.

NOTE All references to pressures, given in megapascals and bar are considered gauge pressures, unless

otherwise specified.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. 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 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests

ISO 15500-2, Road vehicles — Compressed natural gas (CNG) fuel system components — Part 2:

Performance and general test methods

ISO 15501-1, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 1: Safety requirements

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain

terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
5 2
1) (1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm )
© ISO 2017 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(E)
3.1
dry air

air with moisture content such that the dew point of the air at the required test pressure is at least

11 °C below the ambient test temperature
3.2
hydrostatic pressure

pressure to which a component is taken to verify the structural strength of the component

3.3
working pressure

maximum pressure that a CNG refuelling connector can be expected to withstand in actual service

3.4
service pressure

settled pressure of 20 MPa (200 bar) at a uniform gas temperature of 15 °C for B200 and C200

connectors or 25 MPa (250 Bar) for B250 and C250 connectors
3.5
positive locking means

feature which requires actuation of an interlocking mechanism to allow connection/disconnection of

the nozzle from the receptacle
3.6
CNG refuelling nozzle

device which permits quick connection and disconnection of fuel supply hose to the CNG receptacle in a

safe manner, hereafter referred to as nozzle
3.7
CNG refuelling receptacle

device connected to a vehicle or storage system which receives the CNG refuelling nozzle and permits

safe transfer of fuel, hereafter referred to as receptacle
3.8
CNG refuelling connector

joined assembly of CNG refuelling nozzle and receptacle, hereafter referred to as connector

4 General construction requirements

4.1 Nozzles and receptacles manufactured in accordance with this document shall be designed in

accordance with reasonable concepts of safety, durability and maintainability.

4.2 Nozzles and receptacles shall be well fitted and manufactured in accordance with good engineering

practice. All construction requirements may be met by either the construction specified in this document

or another construction that gives at least equivalent performance.
4.3 Nozzles and receptacles shall be
— designed to minimize the possibility of incorrect assembly,

— designed to be secure against displacement, distortion, warping or other damage, and

— constructed to maintain operational integrity under normal and reasonable conditions of handling

and usage.
2 © ISO 2017 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(E)

4.4 Nozzles and receptacles shall be manufactured of materials suitable and compatible for use with

CNG at the pressure and the temperature ranges to which they will be subjected (see Clause 1).

The minimum temperature range shall be selected by the manufacturer between the following ranges:

— 40 °C to 85 °C or 120°C as applicable;
— 20 °C to 85°C or 120 °C as applicable.

NOTE 1 The lower temperature limit depends on whether the component is to be used for mild or cold weather

NOTE 2 The high temperature limit depends on whether the component will be installed inside the engine

compartment (120°C) or outside of the engine compartment (85°C).

4.5 Nozzles and receptacles constructed of brass shall use brass alloys with a copper mass

content ≤70 %. This will ensure proper material compatibility with all the constituents of natural gas.

4.6 Separate external three-way valves shall be constructed and marked so as to indicate clearly the

open, shut and vent positions.

4.7 Nozzles and receptacles shall be operated either to connect or disconnect without the use of tools.

4.8 The receptacle shall be mounted on the vehicle in accordance with ISO 15501-1.

4.9 Jointing components shall provide gas-tight sealing performance.
5 Nozzles

5.1 Nozzles shall be one of the three types according to a), b) and c). See also Annex A.

a) Type 1 is a nozzle for use with dispensing hoses that remain fully pressurized at dispenser

shutdown.

The nozzle shall not allow gas to flow until a positive connection has been achieved. The nozzle shall be

equipped with an integral valve or valves, incorporating an operating mechanism which first stops the

supply of gas and safely vents the trapped gas before allowing the disconnection of the nozzle from the

receptacle. The operating mechanism shall ensure that the vent valve is in the open position before the

release mechanism can be operated and that the gas located between the nozzle shut-off valve and the

receptacle check valve is safely vented prior to nozzle disconnection (see 10.2).

b) Type 2 is a nozzle for use with dispensing hoses that remain fully pressurized at dispenser

shutdown. A separate three-way valve connected directly, or indirectly, to the inlet of the nozzle is

required to safely vent trapped gas prior to nozzle disconnection. The nozzle shall not permit the

flow of gas if unconnected. Venting is required prior to disconnection of the nozzle (see 10.2).

c) Type 3 is a nozzle for use with dispensing hoses which are automatically depressurized — 0,5 MPa

(5 bar) and below — at dispenser shutdown (see 10.2).
In addition, nozzles shall be classified in terms of cycle life as follows:
— Class A, specifying high frequency use, with a cycle life of 100 000;
— Class B, specifying low frequency use, with a cycle life of 20 000.

5.2 Venting or de-pressurization of all nozzle types is required prior to disconnection. Disconnection

of all nozzles shall be able to be accomplished in accordance with 10.2.
© ISO 2017 – All rights reserved 3
---------------------- Page: 15 ----------------------
SIST EN ISO 14469:2017
ISO 14469:2017(E)

5.3 The method for attaching the nozzle to the fuel dispensing system hose shall not rely on the joint

threads between the male and female threads for sealing (e.g. conical threads).

5.4 The three-way valve exhaust port of Type 1 and Type 2 nozzles shall be protected from the ingress

of foreign particles and fluid which would hamper the operation of the valve.

5.5 The portions of a nozzle which are held by the user for connection or disconnection may be

thermally insulated.

5.6 A Type 1 nozzle shall bear a marking indicating the direction of the open and shut operation if it

contains a rotating actuation mechanism.
5.7 The interface surface of the nozzle shall be constructed of ma
...

SLOVENSKI STANDARD
SIST EN ISO 14469:2017
01-november-2017
&HVWQDYR]LOD3ULNOMXþHN]DSROQMHQMHVWLVQMHQHJD]HPHOMVNHJDSOLQD &1*  ,62


Road vehicles - Compressed natural gas (CNG) refuelling connector (ISO 14469:2017)

Véhicules routiers - Connecteur de remplissage en gaz naturel comprimé (GNC) (ISO

14469:2017)
Ta slovenski standard je istoveten z: EN ISO 14469:2017
ICS:
43.060.40 Sistemi za gorivo Fuel systems
75.060 Zemeljski plin Natural gas
SIST EN ISO 14469:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 14469:2017
---------------------- Page: 2 ----------------------
SIST EN ISO 14469:2017
EN ISO 14469
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 43.060.40
English Version
Road vehicles - Compressed natural gas (CNG) refuelling
connector (ISO 14469:2017)
Véhicules routiers - Connecteur de remplissage en gaz
naturel comprimé (GNC) (ISO 14469:2017)
This European Standard was approved by CEN on 11 September 2017.

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-CENELEC 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-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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14469:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 14469:2017
EN ISO 14469:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 14469:2017
EN ISO 14469:2017 (E)
European foreword

The text of ISO 14469:2017 has been prepared by Technical Committee ISO/TC 22 “Road vehicles” of

the International Organization for Standardization (ISO) and has been taken over as EN ISO 14469:2017

by Technical Committee CEN/TC 301 “Road vehicles” the secretariat of which is held by AFNOR.

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 March 2018, and conflicting national standards shall

be withdrawn at the latest by March 2018.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 14469:2017 has been approved by CEN as EN ISO 14469:2017 without any modification.

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SIST EN ISO 14469:2017
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SIST EN ISO 14469:2017
INTERNATIONAL ISO
STANDARD 14469
First edition
2017-01
Road vehicles — Compressed natural
gas (CNG) refuelling connector
Véhicules routiers — Connecteur de remplissage en gaz naturel
comprimé (GNC)
Reference number
ISO 14469:2017(E)
ISO 2017
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SIST EN ISO 14469:2017
ISO 14469:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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’s member body in the country of

the requester.
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Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 14469:2017
ISO 14469:2017(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General construction requirements ................................................................................................................................................. 2

5 Nozzles ............................................................................................................................................................................................................................ 3

6 Standard receptacle dimensions ......................................................................................................................................................... 4

6.1 Standard receptacle dimensions Size 1 (B200, B250) .......................................................................................... 4

6.2 Standard receptacle dimensions size 2 (C200, C250) ........................................................................................... 7

7 Receptacles ..............................................................................................................................................................................................................10

8 Instructions .............................................................................................................................................................................................................11

9 Marking .......................................................................................................................................................................................................................11

10 Tests ................................................................................................................................................................................................................................12

10.1 General requirements ....................................................................................................................................................................12

10.2 User interface ........................................................................................................................................................................................12

10.3 Impact resistance ...............................................................................................................................................................................12

10.4 Receptacle protective caps.........................................................................................................................................................13

10.5 Leakage at room temperature ................................................................................................................................................13

10.5.1 Nozzle .....................................................................................................................................................................................13

10.5.2 Receptacle ...........................................................................................................................................................................13

10.6 Valve operating handle ..................................................................................................................................................................14

10.7 Abnormal loads ...................................................................................................................................................................................14

10.7.1 General...................................................................................................................................................................................14

10.7.2 Test in the unpressurized condition ............................................................................................................15

10.7.3 Test in the pressurized condition ...................................................................................................................15

10.8 Rocking/Twisting ..............................................................................................................................................................................15

10.9 Mounting hardware torque .......................................................................................................................................................16

10.10 Low and high temperatures ......................................................................................................................................................16

10.10.1 General...................................................................................................................................................................................16

10.10.2 Leakage test ...................................................................... .................................................................................................16

10.10.3 Operation test ..................................................................................................................................................................17

10.11 Durability ..................................................................................................................................................................................................17

10.11.1 Durability cycling .........................................................................................................................................................17

10.11.2 Oxygen ageing .................................................................................................................................................................23

10.11.3 Seal material compatibility ..................................................................................................................................23

10.11.4 Ten-day moist ammonia-air stress cracking .........................................................................................24

10.11.5 Electrical resistance ...................................................................................................................................................24

10.12 Hydrostatic strength .......................................................................................................................................................................24

10.13 Corrosion resistance .......................................................................................................................................................................24

10.13.1 Nozzles ..................................................................................................................................................................................25

10.13.2 Receptacles ........................................................................................................................................................................25

10.14 Deformation ...........................................................................................................................................................................................25

10.15 Non-igniting evaluation ................................................................................................................................................................25

10.16 Pressure-tight protective cap (PTPC) ...............................................................................................................................25

10.16.1 General...................................................................................................................................................................................25

10.16.2 Leakage .................................................................................................................................................................................26

10.16.3 Durability cycling .........................................................................................................................................................26

10.16.4 Abuse.......................................................................................................................................................................................27

10.16.5 Impact resistance .........................................................................................................................................................27

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SIST EN ISO 14469:2017
ISO 14469:2017(E)

10.16.6 Corrosion resistance ..................................................................................................................................................27

10.16.7 Hydrostatic strength ..................................................................................................................................................27

Annex A (informative) Nozzle characteristics..........................................................................................................................................28

Annex B (normative) Receptacle text fixture............................................................................................................................................29

Bibliography .............................................................................................................................................................................................................................37

iv © ISO 2017 – All rights reserved
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SIST EN ISO 14469:2017
ISO 14469:2017(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.

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 documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2. www .iso .org/ directives

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received. www .iso .org/ patents

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT), see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific

aspects for gaseous fuels.

This first edition of ISO 14469:2016 cancels and replaces the first edition of ISO 14469-1:2004,

ISO 14469-2:2007 and ISO 14469-3:2006, which have been technically revised.
© ISO 2017 – All rights reserved v
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SIST EN ISO 14469:2017
ISO 14469:2017(E)
Introduction

This document was developed to use in the examination, testing and certification of newly produced

compressed natural (CNG) gas vehicle fuelling nozzles and receptacles and, as such, applies only to the

nozzles and receptacles used in CNG fuelling systems, and not to the system itself.

A nozzle certified to this International Standard will be functionally compatible from a safety and

performance perspective with all listed receptacles of compatible profile and system pressure. Similarly,

a certified receptacle will be functionally compatible from a safety and performance perspective with

all listed nozzles of compatible profile and system pressure.

As there may eventually be many different kinds of nozzles and receptacles available from a variety

of manufacturers which, for safety reasons, have to be all compatible with one another, this document

specifies a series of receptacle profiles. These standard profiles incorporate the design specifications

(mating materials, geometry and tolerances) which may be considered in the certification of a submitted

nozzle or receptacle.

The construction and performance of nozzles and receptacles are based on the observation that three

main parameters affect user safety and system compatibility.
a) Service pressure

All nozzles and receptacles are designed to have a service pressure of either 20 MPa (200 bar) for B200

and C200 connectors or 25 MPa (250 Bar) for B250 and C250 connectors.
b) Design life

Frequency of use is the second parameter to be considered. Since frequency of use will differ with the

nozzle/receptacle application (i.e. public sector, fleet employee and residential), all receptacles will be

tested at 10 000 connect/disconnect cycles for compliance with this document. In addition, all nozzles

will be tested according to the following frequency use classifications, as applicable:

— Class A Nozzle, specifying high frequency use, with a cycle life of 100 000 cycles and equating to

approximately 100 fills per day for three years;

— Class B Nozzle, specifying medium frequency use, with a cycle life of 20 000 cycles and equating to

approximately 10 fills per day for five years.
c) Training
Operator training required is in accordance with national requirements.
vi © ISO 2017 – All rights reserved
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SIST EN ISO 14469:2017
INTERNATIONAL STANDARD ISO 14469:2017(E)
Road vehicles — Compressed natural gas (CNG) refuelling
connector
1 Scope

This document specifies CNG refuelling nozzles and receptacles constructed entirely of new and unused

parts and materials, for road vehicles powered by compressed natural gas. A CNG refuelling connector

consists of, as applicable, the receptacle and its protective cap (mounted on the vehicle) and the nozzle.

This document is applicable only to such devices designed for a service pressure of 20 MPa (200 bar)

and 25 MPa (250 bar), to those using CNG according to ISO 15403-1 and ISO 15403-2 and having

standardized mating components, and to connectors that prevent natural gas vehicles from being

fuelled by dispensers with service pressures higher than that of the vehicle, while allowing them to

be fuelled by dispensers with service pressures less than or equal to the vehicle fuel system service

pressure.
This document refers to service pressures of 20 MPa and 25 MPa for:
— size 1: B200 and B250;
— size 2: C200 and C250.

NOTE All references to pressures, given in megapascals and bar are considered gauge pressures, unless

otherwise specified.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. 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 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests

ISO 15500-2, Road vehicles — Compressed natural gas (CNG) fuel system components — Part 2:

Performance and general test methods

ISO 15501-1, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 1: Safety requirements

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain

terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
5 2
1) (1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm )
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SIST EN ISO 14469:2017
ISO 14469:2017(E)
3.1
dry air

air with moisture content such that the dew point of the air at the required test pressure is at least

11 °C below the ambient test temperature
3.2
hydrostatic pressure

pressure to which a component is taken to verify the structural strength of the component

3.3
working pressure

maximum pressure that a CNG refuelling connector can be expected to withstand in actual service

3.4
service pressure

settled pressure of 20 MPa (200 bar) at a uniform gas temperature of 15 °C for B200 and C200

connectors or 25 MPa (250 Bar) for B250 and C250 connectors
3.5
positive locking means

feature which requires actuation of an interlocking mechanism to allow connection/disconnection of

the nozzle from the receptacle
3.6
CNG refuelling nozzle

device which permits quick connection and disconnection of fuel supply hose to the CNG receptacle in a

safe manner, hereafter referred to as nozzle
3.7
CNG refuelling receptacle

device connected to a vehicle or storage system which receives the CNG refuelling nozzle and permits

safe transfer of fuel, hereafter referred to as receptacle
3.8
CNG refuelling connector

joined assembly of CNG refuelling nozzle and receptacle, hereafter referred to as connector

4 General construction requirements

4.1 Nozzles and receptacles manufactured in accordance with this document shall be designed in

accordance with reasonable concepts of safety, durability and maintainability.

4.2 Nozzles and receptacles shall be well fitted and manufactured in accordance with good engineering

practice. All construction requirements may be met by either the construction specified in this document

or another construction that gives at least equivalent performance.
4.3 Nozzles and receptacles shall be
— designed to minimize the possibility of incorrect assembly,

— designed to be secure against displacement, distortion, warping or other damage, and

— constructed to maintain operational integrity under normal and reasonable conditions of handling

and usage.
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SIST EN ISO 14469:2017
ISO 14469:2017(E)

4.4 Nozzles and receptacles shall be manufactured of materials suitable and compatible for use with

CNG at the pressure and the temperature ranges to which they will be subjected (see Clause 1).

The minimum temperature range shall be selected by the manufacturer between the following ranges:

— 40 °C to 85 °C or 120°C as applicable;
— 20 °C to 85°C or 120 °C as applicable.

NOTE 1 The lower temperature limit depends on whether the component is to be used for mild or cold weather

NOTE 2 The high temperature limit depends on whether the component will be installed inside the engine

compartment (120°C) or outside of the engine compartment (85°C).

4.5 Nozzles and receptacles constructed of brass shall use brass alloys with a copper mass

content ≤70 %. This will ensure proper material compatibility with all the constituents of natural gas.

4.6 Separate external three-way valves shall be constructed and marked so as to indicate clearly the

open, shut and vent positions.

4.7 Nozzles and receptacles shall be operated either to connect or disconnect without the use of tools.

4.8 The receptacle shall be mounted on the vehicle in accordance with ISO 15501-1.

4.9 Jointing components shall provide gas-tight sealing performance.
5 Nozzles

5.1 Nozzles shall be one of the three types according to a), b) and c). See also Annex A.

a) Type 1 is a nozzle for use with dispensing hoses that remain fully pressurized at dispenser

shutdown.

The nozzle shall not allow gas to flow until a positive connection has been achieved. The nozzle shall be

equipped with an integral valve or valves, incorporating an operating mechanism which first stops the

supply of gas and safely vents the trapped gas before allowing the disconnection of the nozzle from the

receptacle. The operating mechanism shall ensure that the vent valve is in the open position before the

release mechanism can be operated and that the gas located between the nozzle shut-off valve and the

receptacle check valve is safely vented prior to nozzle disconnection (see 10.2).

b) Type 2 is a nozzle for use with dispensing hoses that remain fully pressurized at dispenser

shutdown. A separate three-way valve connected directly, or indirectly, to the inlet of the nozzle is

required to safely vent trapped gas prior to nozzle disconnection. The nozzle shall not permit the

flow of gas if unconnected. Venting is required prior to disconnection of the nozzle (see 10.2).

c) Type 3 is a nozzle for use with dispensing hoses which are automatically depressurized — 0,5 MPa

(5 bar) and below — at dispenser shutdown (see 10.2).
In addition, nozzles shall be classified in terms of cycle life as follows:
— Class A, specifying high frequency use, with a cycle life of 100 000;
— Class B, specifying low frequency use, with a cycle life of 20 000.

5.2 Venting or de-pressurization of all nozzle types is required prior to disconnection. Disconnection

of all nozzles shall be able to be accomplished in accordance with 10.2.
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SIST EN ISO 14469:2017
ISO 14469:2017(E)

5.3 The method for attaching the nozzle to the fuel dispensing system hose shall not rely on the joint

threads between the male and female threads for sealing (e.g. conical threads).

5.4 The three-way valve exhaust port of Type 1 and Type 2 nozzles shall be protected from the ingress

of foreign particles and fluid which would hamper the operation of the valve.

5.5 The portions of a nozzle which are held by the user for connection or disconnection may be

thermally insulated.

5.6 A Type 1 nozzle shall bear a marking indicating the direction of the open and shut operation if it

contains a rotating actuation mechanism.

5.7 The interface surface of the nozzle shall be constructed of material having a hardness >75 Rockwell

B (HRB 75) and shall b
...

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