This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of a connector for gas appliances. It is the result of years of experience in the manufacture, testing, installation, maintenance, inspection and research on connectors for gas appliances designed for utilization of gas. There are risks of injury to persons inherent in appliances that, if completely eliminated, would defeat the utility of the appliance. The provisions in this standard are intended to help reduce such risks while retaining the normal operation of the appliance.
Nothing in this standard is to be considered in any way as indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow compliance of connectors for gas appliances, the safety construction and performance of which may exceed the various provisions specified herein. In its preparation, recognition has been given to possibilities of improvement through ingenuity of design. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations or suggestions should be forwarded to the Chairman of Accredited Standards Committee Z21/83, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131, or the Chairman of CSA Technical Committee on Gas Appliances and Related Accessories, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.
Safe and satisfactory operation of a connector for gas appliances depends to a great extent upon its proper installation, use and maintenance. It should be installed, as applicable, in accordance with the National Fuel Gas Code, ANSI Z223.1/NFPA 54; and the Natural Gas and Propane Installation Code, CSA B149.1.
Users of this American National Standard/CSA Standard are advised that the devices, products and activities within its scope may be subject to regulation at the Federal, Territorial, Provincial, state or local level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this standard, the Federal, Territorial, Provincial, state or local regulation should be followed.
THIS STANDARD IS INTENDED TO BE USED BY THE MANUFACTURING SECTOR AND BY THOSE APPLYING THE EQUIPMENT AND BY THOSE RESPONSIBLE FOR ITS PROPER INSTALLATION. IT IS THE RESPONSIBILITY OF THESE USERS TO DETERMINE THAT IN EACH CASE THIS STANDARD IS SUITABLE FOR AND APPLICABLE TO THE SPECIFIC USE THEY INTEND.
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 which has not been installed.
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ANSI Z21.24a-2009/CSA 6.10a-2009 (R2011) - Addenda 1 to ANSI Z21.24-2006/CSA 6.10-2006, Connectors for Gas Appliances