1 Scope
1.1 Applicability
This Standard applies to newly produced compressed natural gas vehicle (NGV) fuelling connection devices, hereinafter referred to as “devices”, constructed entirely of new, unused parts and materials. NGV fuelling 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).
Note: 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).
1.2 Applicable pressures
This Standard applies to devices that have a service pressure of either 6205 kPa (900 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 4.8.3c)]:
a)
“P9”: 6205 kPa (900 psi);
b)
“P24”: 16 500 kPa (2400 psi);
c)
“P30” and “P30HD”: 20 700 kPa (3000 psi); and
d)
“P36” and “P36HD”: 24 800 kPa (3600 psi).
The “HD” suffix designates a larger geometry version to allow higher flow rates associated with fuelling larger heavy duty applications.
Legacy connection devices produced prior to the 2017 edition of this Standard used the P30 HD profile only (see Figure 6).
1.3 Mating components
This Standard applies to devices with standardized mating components (see Clauses 4.4.6and 4.6).
1.4 Applicable design parameters
This Standard applies to devices that
a)
prevent natural gas vehicles from being fuelled by a dispenser with service pressures higher than the vehicle it was designed for;
b)
allow natural gas vehicles to be fuelled by a dispenser with service pressures equal to or lower than the vehicle fuel system service pressure; and
c)
prevent light duty natural gas receptacles from being fuelled by a heavy duty nozzle.
1.5 Exclusions
This Standard does not apply to repaired or rebuilt nozzles.
1.6 Pressure references
All references to “psi or kPa” throughout this Standard are to be considered gauge pressures unless otherwise specified.
1.7 Units of measure
The values given in SI units are the units of record for this Standard. The values given in parentheses are for information and comparison only.
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.