ISO 21058:2019 applies only to Dimethyl Ether refuelling connectors hereinafter referred to as devices, constructed entirely of new, unused parts and materials. Dimethyl Ether refuelling connectors consist of the following components, as applicable:

a) Nozzle (mounted on dispenser side).

b) Receptacle (mounted on vehicle).

This document applies to devices which use Dimethyl Ether as fuel, hereinafter referred to in this document as D15 [see 9.1 c)].

This document applies to devices with standardised mating components.

This document applies to connectors which prevent Dimethyl Ether vehicles from being fuelled by fuel station dispensers for other gaseous fuels.

This document is applicable to: Dimethyl Ether in accordance with ISO 16861.

NOTE All references to pressures (kPa) throughout this document are considered gauge pressures unless otherwise specified.