CSA ANSI Z21.81-2005 pdf download American National Standard/ CSA Standard For Cylinder Connection Devices
1.1 Scope
1.1.1 This Standard covers CGA 791 (Type I) and CGA 81 0 (Type II) cylinder connection devices, as defined in Part IV, Definitions, intended to connect the cylinder valve on portable LP-Gas containers to the inlet of the regulator on outdoor cooking gas appliances. These cylinder connection devices are intended for vapour withdrawal service only.
1.1.2 The cylinder connection devices covered by this standard are used in applications covered by Standard for Outdoor Cooking Gas Appliances, ANSI Z21.58 • CSA 1.6.
1.1.3 This Standard does not cover connection devices for engine fuel applications.
1.1.4 A product that contains features, characteristics, components, materials, or systems new or different from those in use when the standard was developed, and that involves a risk of fire, electric shock, or injury to persons, shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the level of safety for the user of the product as originally anticipated by the intent of this standard.
1.1.5 Exhibit A, Items Unique to Canada, contains provisions that are unique to Canada.
1.2 General
1.2.1 Assembly
a. A cylinder connection device shall include all the components necessary for its normal function and use, and shall be furnished in not more than two parts or assemblies: Cylinder portion and Appliance portion.
b. Pipe threads shall be in accordance with the Standard for Pipe Threads General Purpose (Inch), ANSI/ASME B1.20.1.
c. Cylinder connection devices shall incorporate means for obtaining a leak-tight connection, without the use of tools, before the flow of gas is permitted. 1 . The cylinder portion of a cylinder connection device shall incorporate means for automatic shut off from the gas supply side when the cylinder connection device is disconnected.
2. The appliance portion of a cylinder connection device shall incorporate means for: Temperature activated shut-off, and an excess flow limiting device complying with the requirements in Standard for Valves for Anhydrous Ammonia and LP- Gas, UL 125. The rated flow activation shall be tested at 1 00 psi (690 kPa) and shall not exceed the maximum limits given in the Table below. When in the closed position, will not allow a flow greater than 1 0 scfh (0.28 m 3 /h) at 1 00 psi (690 kPa).