本SAE推荐规程适用于那些用于控制车辆行车制动器的空气制动系统阀和SAE J1859定义的用于测量性能特征的测试程序。本推荐实践遵循使用英文单位指定阀门特性的标准行业实践。

This SAE Recommended Practice applies to those air brake system valves used to control the vehicle service brakes and test procedures defined by SAE J1859 to measure performance characteristics. This Recommended Practice adheres to standard industry practice of using English units for specifying valve characteristics.