本标准规定了用于控制在-40°C至+50°C温度范围内处理的易燃和可燃液体的应急阀的最低要求。这些阀门属于汽车燃油分配设备和相关管道系统中使用的类型。 这些要求所涵盖的阀门是全新制造的阀门 未使用的零件和材料。这些要求包括机械或温度操作类型的阀门或其组合，不包括完全或部分由电力操作的类型。它们可以构成总成的一部分，提供额外的服务功能，其要求不在本标准的范围内。

This Standard sets forth minimum requirements for emergency valves that are intended to be used for the control of flammable and combustible liquids which are handled at temperatures within the range of -40 °C to +50 °C. The valves are of the type used in motor fuel dispensing equipment and associated piping systems. Valves covered under these requirements are newly produced valves constructed entirely of new unused parts and materials. These requirements cover valves of the mechanically or temperature operated types or combinations of such to the exclusion of types operated wholly or partially by electricity. They may form a part of an assembly, which provides for additional functions of service, the requirements of which are outside the scope of this Standard.