CSA ANSI NGV 1-2017/CSA NGV 1-2017 (R2021)

Preface
This is the third edition of CSA/ANSI NGV 1, Compressed natural gas vehicle (NGV) fueling connection devices. It supersedes the previous editions published in 2006 and 1998.

P36HD nozzles designed in accordance with this Standard will not be compatible with existing P36 heavy duty applications using C200 (ISO 14469) receptacles, equivalent to P30HD (see Figure 6).

Scope
1.1
This Standard applies to newly produced compressed Natural Gas Vehicle (NGV) fueling connection devices, hereinafter referred to as "devices", constructed entirely of new, unused parts and materials. NGV fueling connection devices consist of the following components, as applicable:

a) receptacle and protective cap (mounted on vehicle) (see Clause 4.4);

b) nozzle (see Clause 4.2); and

c) three-way valve (external to nozzle and mounted in the fuel dispenser system) (see Clause 4.5).

1.2
This Standard applies to devices that have a service pressure of either 8300 kPa (1200 psi), 16 500 kPa (2400 psi), 20 700 kPa (3000 psi), or 24 800 kPa (3600 psi), hereinafter referred to in this Standard as the following (see Clause 4.8.3 c)):

"P12" - 8300 kPa (1200 psi)

"P24" - 16 500 kPa (2400 psi)

"P30" and "P30HD" - 20 700 kPa (3000 psi)

"P36" and "P36HD" - 24 800 kPa (3600 psi)

The "HD" suffix designates a larger geometry version to allow higher flow rates associated with fueling larger heavy duty applications.

1.3
This Standard applies to devices with standardized mating components (see Clauses 4.4.6 and 4.6).

1.4
This Standard applies to devices that:

a) prevent natural gas vehicles from being fueled by a dispenser with service pressures higher than the vehicle it was designed for;

b) allow natural gas vehicles to be fueled by a dispenser with service pressures equal to or lower than the vehicle fuel system service pressure; and

c) prevent light duty natural gas vehicles from being fueled by a heavy duty dispenser.

1.5
This Standard does not apply to repaired or rebuilt nozzles.

1.6
All references to "psi or kPa" throughout this Standard are to be considered gauge pressures unless otherwise specified.

1.7 Units of measure

This Standard contains SI (metric) units with corresponding yard/pound quantities, the purpose being to allow the Standard to be used in yard/pound units. IEEE/ASTM SI 10, American National Standard for Metric Practice, or ISO 80000-1:2009 Quantities and units - Part 1: General, is used as a guide in making conversion.) If a value for a measurement and a corresponding value in other units are stated, the first stated value is to be regarded as the requirement. The given corresponding value may be approximate. If a value for a measurement and a corresponding value in other units, are both specified as a quoted marking requirement, the first stated unit, or both are to be provided.

1.8 Terminology

In this Standard, "shall" is used to express a requirement, i.e., a provision that the user shall satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.