CSA/ANSI Z21.24:22 • CSA 6.10:22

1 Scope 1.1 Inclusions This Standard applies to newly produced gas appliance connectors, constructed entirely of new unused parts and materials, having nominal internal diameters of 1/4, 3/8, 1/2, 5/8, 3/4, and 1 in, and having fittings at both ends provided with taper pipe threads for connection to a gas appliance and to house piping. This Standard covers assembled appliance connectors not exceeding a nominal length of 6 ft (1.83 m). Connectors listed under this Standard are intended for use with gas appliances that are not frequently moved after installation. For the purpose of this Standard, an unused connector, including end fittings, is considered to be a connector that has not been installed. 1.2 Suitability Appliance connectors complying with this Standard are considered suitable for use with natural gases and propane. 1.3 System pressure units Appliance connectors complying with this Standard are for use with piping systems having fuel gas pressures not in excess of 1/2 psi (3.5 kPa). 1.4 Measurement units This Standard contains SI (metric) corresponding to the yard/pound quantities, the purpose being to allow the Standard to be used in SI (metric) units. (IEEE/ASTM SI 10 or CAN/CSA Z234.1 are used as a guide in making metric conversion from yard/pound quantities.) The values given in parentheses are for information and comparison only. 1.5 References to “psi” All references to “psi” throughout this Standard are gauge pressure unless otherwise specified. 1.6 Provisions unique to the United States Clause 7contains provisions that are unique to the United States. 1.7 Provisions unique to Canada Clause 8contains provisions that are unique to Canada. 1.8 Mandatory language 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.