1 Scope

1.1 These requirements cover adapters, couplings and fittings intended for use with natural gas, manufactured gas, liquefied petroleum gas (LP-Gas), and mixtures thereof, or anhydrous ammonia for making connections in domestic, commercial, or industrial types of systems. Devices that have been identified are as follows:

1. a) Adapters and fittings, which include those that convert one connection to another;

2. b) Excess flow and check valve adapters and fittings;

3. c) Filling adapters;

4. d) Gauge adapter and fittings;

5. e) Quick-Connect Couplings (other than for low pressure couplings in accordance with the Standard for Quick Disconnect Devices for Use with Gas Fuel Appliances, CSA/ANSI Z21.41;

6. f) Sight flow indicators;

7. g) Breakaway couplings;

8. h) Thermal shutoff adapters and fittings; and

9. i) Unloading adapters.

1.2 Devices covered by these requirements are intended for use in systems and facilities covered in one of the following:

1. a) National Fuel Gas Code, NFPA 54;

2. b) Liquefied Petroleum Gas Code, NFPA 58;

3. c) American National Standard Safety Requirements for the Storage and Handling of Anhydrous Ammonia, ANSI/CGA G-2.1 (ANSI K61.1); or

4. d) Standard on Recreational Vehicles, NFPA 1192.