ISO/TS 21104:2019

TECHNICAL ISO/TS
SPECIFICATION 21104
First edition
2019-10
Road vehicles — Liquefied natural
gas (LNG) integrated low pressure
refuelling and venting connector —
1,8 MPa connector
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General construction requirements . 3
4.1 Design . 3
4.1.1 Spillage . 3
4.1.2 Positive locking device . 3
4.1.3 Design cycle life . 3
4.2 Pressure rating . 3
4.3 Working temperature . 3
4.4 Materials . 3
4.4.1 Corrosion protection . 4
4.4.2 Material of the bodies of the receptacle and of the nozzle . 4
4.5 Operation . 4
4.6 Sealing exchange . 4
4.7 Installation . 4
5 Nozzles . 4
5.1 Venting depressurization . 4
5.2 Identification . 4
6 Standard receptacle dimensions . 4
7 Receptacle . 5
7.1 Cycle life . 5
7.2 Design . 5
7.3 Protective cap . 5
7.4 Mounting . 5
8 Instructions . 6
9 Marking . 6
9.1 Clarity . 6
9.2 Manufacturer and International Standard information . 6
9.3 Date of manufacture . 6
9.3.1 Additional marking . 6
10 Tests . 7
10.1 General requirements . 7
10.2 Test program . 7
10.3 User-interface . 7
10.3.1 Positive locking . 7
10.3.2 Safe disconnection . 8
10.3.3 Manual force in at T = + 20 °C +/-5 °C . 8
10.3.4 Manual force at high humidity . 8
10.4 Impact resistance of a nozzle. 8
10.5 Abnormal loads . 9
10.5.1 General. 9
10.5.2 Test in the unpressurized condition .10
10.5.3 Test in pressurized condition .10
10.6 Leak test .10
10.6.1 Hydrostatic pressure test .10
10.6.2 Leakage test . .11
10.7 Durability of the device (cycle life) .11
10.7.1 Concept of the test of a device .11
10.7.2 Cycle definition .11
10.7.3 Test series .12
10.7.4 Exchange of seal of the nozzle and/or receptacle .12
10.8 Electrical conductivity .12
10.9 Corrosion resistance .12
10.10 Non-Destructive Examination (NDE) .12
Bibliography .14
iv © ISO 2019 – All rights reserved

Foreword
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This document was prepared by Technical Committee ISO/TC 22, Road Vehicles, Subcommittee SC 41,
Specific aspects for gaseous fuels.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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TECHNICAL SPECIFICATION ISO/TS 21104:2019(E)
Road vehicles — Liquefied natural gas (LNG) integrated
low pressure refuelling and venting co
...