请注意:此版本的所有临时修订版将在您购买时提供。LP GasUL 5691 Scope1的抽头和挠性软管接头。1这些要求包括用于装配燃料供应系统（1.3（b）和（c）中概述的用于液化石油气（LP气体）的系统除外）的引线和柔性软管接头。低压或高压软管接头也适用于低压（1.0 psig（6.9 kPa）或以下）天然气应用。 液化石油气系统使用美国运输部（DOT）气瓶或ASME储罐，并按照液化石油气规范NFPA/ANSI 58安装。天然气系统中使用的低压柔性软管接头应按照国家燃气规范NFPA 54/ANSI Z223进行安装。1.抽头和软管接头用于连接设备部件之间或设备与服务管道之间。1.2这些要求还包括无端软管- 用于制造柔性软管接头的连接配件。1.3本标准不适用于:在5 psig（34.5 kPa）或以下压力下处理燃气的燃气器具连接器，根据ANSI Z21《燃气器具金属连接器标准》进行调查。24.根据UL 1785《汽车发动机用液化石油气燃料软管和软管总成调查大纲》调查的发动机燃料应用柔性软管接头。用于受限区域的柔性软管接头。 根据ANSI Z21《便携式户外燃气设备用燃气软管连接器标准》进行调查的软管连接器。54

Please note: All interim revisions for this edition available at time of your purchase will be included.Pigtails and Flexible Hose Connectors for LP-GasUL 5691 Scope1.1 These requirements cover pigtails and flexible hose connectors used in the assembly of fuel-supply systems other than those outlined in 1.3(b) and (c), intended for liquefied petroleum gas (LP-Gas). Low or high pressure flexible hose connectors are also suitable for low pressure (1.0 psig (6.9 kPa) or less) natural gas service. LP-Gas systems use either Department of Transportation (DOT) cylinders or ASME tanks and are intended to be installed in accordance with the Liquified Petroleum Gas Code, NFPA/ANSI 58. Low pressure flexible hose connectors used in natural gas systems are intended to be installed in accordance with the National Fuel Gas Code, NFPA 54/ANSI Z223.1. Pigtails and flexible hose connectors are used to make connection between parts of equipment or between equipment and service piping.1.2 These requirements also cover hose without end-connection fittings that is used to manufacture flexible hose connectors.1.3 This Standard does not apply to:Gas appliance connectors for handling fuel gases at 5 psig (34.5 kPa) or less which are investigated under the Standard for Metal Connectors for Gas Appliances, ANSI Z21.24.Flexible hose connectors for engine fuel applications which are investigated under the Outline of Investigation, LP-Gas Fuel Hose and Hose Assemblies for Vehicle Engines, UL 1785.Flexible hose connectors for use in confined areas.Hose connectors which are investigated under the Standard for Gas Hose Connectors for Portable Outdoor Gas-Fired Appliances, ANSI Z21.54.