UL 144:2021 pdf download.STANDA RD FOR SAFETY--LP-Gas Regulators.
1.1 These requirements cover pressure regulators for use with LP-Gas equipment.
NOTE: For the purposes of this standard the terms “LP-Gas” and “Propane” are interchangeable.
1.2 Regulators covered by these requirements are intended to be installed and used in systems in accordance with the applicable Codes and Regulations as determined by the Authority Having Jurisdiction (AHJ), such as, but not limited to:
a) In the United States:
1) Liquefied Petroleum Gas Code, NFPA 58;
2) National Fuel Gas Code, NFPA 54;
3) Outdoor Cooking Gas Appliances, CSNAM ANSI Z21 .58/CSA 1.6; and b) In Canada:
1) Natural gas and propane installation code, CSA B 149.1;
2) Outdoor Cooking Gas Appliances, CSAJAM ANSI Z21 .58/CSA 1.6;
3) CAN/CSA Z240 RV Series, Recreational Vehicles;
4) CAN/CSA Z241 Series, Park model trailers; and
5) Provincial or other Regulations.
1.3 These requirements do not cover:
a) Compressed gas regulators;
b) Gas appliance pressure regulators;
c) Regulators for use in chemical, petroleum, or utility power plants; pipeline or marine terminals; or related storage facilities at such plants or terminals;
d) Combination gas control valves for gas appliances;
e) Regulators for use in oxygen-fuel, gas-welding, and cutting operations; and
f) Regulators for use in engine fuel (automotive and/or marine) applications.
The requirements for (a) — (e) are covered in: the Standard for Compressed Gas Regulators, UL 252, or CGA E-4, Standard for Compressed Gas Regulators; and in the Standard for Gas Appliance Pressure Regulators, CSA/AM CSAIANSI Z21.18/CSA 6.3, and in the Standard for Combination Gas Controls for Gas Appliances, CSAIAM CSA/ANSI Z21 .78/CSA 6.20, respectively.
1.4 The assigning of flow ratings to regulators is not within the scope of these requirements
2 Units of Measurement
2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or
approximate information.
3 Components
3.1 Except as indicated in 3.2, a component of a product covered by this standard shall comply with the requirements for that component.
3.2 A component is not required to comply with a specific requirement that:
a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or
b) Is superseded by a requirement in this standard.
3.3 A component shall be used in accordance with its rating established for the intended conditions of use.
3.4 Specific components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specified limits, and shall be used only under those specific conditions.
4 Referenced Publications
4.1 The documents shown below are referenced in the text of this Standard. Any undated reference to a code or standard appearing in the requirements of this Standard shall be interpreted as referring to the latest edition of that code or standard.UL 144 pdf download.