UL Standards & Engagement Hand-Held Torches For Fuel Gases UL 147

1.1 These requirements cover hand-held torches of the air aspirating type for operations such as heating, soldering, and brazing. 1.2 Torches covered by these requirements are intended to operate on commercial grade fuel gases other than acetylene as defined in the Standard for Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes, NFPA 51. 1.3 Torches covered by these requirements are intended for direct connection to disposable containers covered in the Standard for Nonrefillable (Disposable) Type Fuel Gas Cylinder Assemblies, UL 147A, Standard for Nonrefillable (Disposable) Type Metal Container Assemblies for Butane, UL 147B, or similar type disposable containers, or as covered by 4. 1.4 Torches covered by these requirements may incorporate integral container assemblies which may be refillable. 1.5 LP-Gas torches are intended for use in accordance with the Liquefied Petroleum Gas Code, NFPA 58. 1.6 Torches covered by these requirements shall be permitted to incorporate a hose assembly and shall be permitted to be used with refillable containers greater than 2.71 pound (1.23 kg) water capacity. 1.7 These requirements also cover battery-operated torches covered in Supplement SA - Battery-Operated Ignited Torches in this Standard.