ASHRAE标准153提供了一种测量热泵和其他制冷系统用换向阀质量流量的方法。创建该标准是因为需要准确的容量数据，以便在使用各种制冷剂的各种制冷系统中正确应用四通阀。试验方法应在大多数使用常规实验室设备的用户和生产商的能力范围内。本标准允许使用多种试验液体，包括用于最终应用的制冷剂。

ASHRAE Standard 153 provides a means for measuring the mass flow capacity of reversing valves used on heat pumps and other refrigerating systems. The standard was created because accurate capacity data are needed to facilitate the proper application of four-way valves in a varietyof refrigerating systems that employ a variety of refrigerants.The test method is intended to be within the capabilities of most users and producers employing conventional laboratory apparatus. This standard allows the use of a wide variety of test fluids, including the refrigerant intended for the end application.