ANSI/CSA HGV 4.2-2013 (R2019)

ANSI/CSA HGV 4.2-2013 - Hoses for compressed hydrogen fuel stations, dispensers and vehicle fuel systems

Preface This publication represents a standard for safe operation, substantial and durable construction and performance testing of gaseous hydrogen hose and hose assemblies which are used as a part of the dispensing station to connect the dispenser to the refueling nozzle; used as part of a vehicle on-board fuel system; or used as vent lines which carry gas to a safe location for either vehicles or dispensing systems. 

Purpose and Scope

The standard sets safety, construction, and performance requirements for gaseous hydrogen hoses and hose assemblies used in:

Class A – High‑pressure hoses connecting a dispenser to the fueling nozzle

Class B – High‑pressure hoses in a vehicle’s on‑board fuel storage system

Class C – Low‑pressure hoses in a vehicle’s fuel delivery system

Class D – Flexible station‑side hoses where flexibility is necessary and acceptable to the certification agency

Part I: Construction

1.1 Scope

1.1.1

This standard contains safety requirements for material, design, manufacture and testing of gaseous 

hydrogen hose and hose assemblies. This standard applies to newly manufactured hose and hose 

assemblies for: 

• connecting the dispenser to the fueling nozzle, high pressure (class A)

• used as part of a vehicle on-board fuel storage system, high pressure (class B)

• used as part of a vehicle low pressure fuel delivery system, (class C)

• flexible hoses used on hydrogen fuel station equipment (class D )

Note: Class D hoses include all station side hydrogen hoses where flexibility is necessary and acceptable to the certification 

agency

The requirements of this standard may be superseded by an application specific standard.

1.1.2

All dimensions used in this standard are in metric units [International System of Units (SI)], unless 

otherwise specified. If a value for a measurement, as given in this standard, is followed by an equivalent 

value in other units, the first stated is to be regarded as the specification.

1.1.3

All references to pressure throughout this document are to be considered gauge pressures unless 

otherwise specified.

1.1.4

For clarification of which clause applies to which type of flexible hose see Appendix A, Applications 

Summary (Hose/Assembly).

1.1.5

Exhibit A contains a list of standards specifically referenced in this standard, and sources from which these 

reference standards may be obtaine