CSA/ANSI Z21.41:23 • CSA 6.9:23

1 Scope 1.1 Inclusions This Standard applies to newly-produced, hand-operated quick-disconnect devices, sizes NPS 1/8 in to 1-1/2 in, hereinafter also referred to as devices, constructed entirely of new, unused parts and materials which provide a means for connecting and disconnecting appliances or appliance connectors to gas supplies, and which are for indoor and outdoor applications. These devices are equipped with automatic means to shut off the gas when the devices are disconnected. 1.2 Applicable fuel gases and pressure references This Standard applies to quick-disconnect devices for use with natural and propane gas having maximum gas pressure ratings of 1/2 psi (3.5 kPa) up to and including 30 psi (207 kPa). A manufacturer must specify what pressure will be marked on the product. All references to psi (kPa) throughout this Standard are considered as gauge pressure unless otherwise specified. 1.3 Temperature This Standard applies to quick-disconnect devices that are capable of operation at ambient temperatures between 32 and 200 °F (0 and 93.3 °C) if intended for indoor use only, or -40° and 200 °F (-40° and 93.3 °C) if intended for indoor/outdoor use. 1.4 Manually operated valve provisions Clause 4.1.3contains provisions for quick-disconnect devices that incorporate manually operated valves. 1.5 Provisions unique to Canada Clause 7contains provisions that are unique to Canada. 1.6 Terminology In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to 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. 1.7 Units of measurement In the US, the values given in US customary units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. In Canada, the values given in SI units are the units of record for the purposes of this Standard. Note: See also Annex A.