本标准适用于设计用于使用以下制冷剂的所有类型制冷和空调系统液体管路的密封液体管路过滤器:R-22、R-134a、R-290、R-404A、R-407A、R-407C、R-410A、R-507A、R-600a和R-744，定义见ANSI/ASHRAE 34及其附录。本标准提供了在规定条件下确定液体管路过滤器的整体过滤效率和污染物容量的方法。除外条款:本标准不适用于制冷和空调系统吸入管路或低压侧使用的过滤器。限制:本标准仅涉及固体颗粒的去除和保留。因此，此处不考虑酸、溶解污染物和水分去除。 尽管许多商用液体管路过滤器干燥器都有除湿和保持介质，但除湿的主题与本标准的考虑因素是分开的。液体管线干燥器除湿性能的评级标准为ANSI/AHRI标准710（I-P）。

This standard applies to hermetic Liquid Line Filters designed for use in the liquid line of all types of refrigeration and air-conditioning systems employing the following refrigerants: R-22, R-134a, R-290, R-404A, R-407A, R-407C, R-410A, R-507A, R-600a, and R-744 as defined in ANSI/ASHRAE 34 with Addenda. This standard provides a means of determining the Overall Filter Efficiency and Contaminant Capacity of a Liquid Line Filter at specified conditions.Exclusions: This standard does not apply to filters used in the suction line or low pressure side of refrigeration and air-conditioning systems.Limitations: This standard only addresses the removal and retention of solid particles. Therefore, acid, dissolved contaminant, and moisture removal are not considered here. Although many commercial Liquid Line Filter Driers have moisture removal and retention media, the subject of moisture removal is separate and distinct from the considerations of this standard. The rating standard for moisture removal performance of liquid line driers is ANSI/AHRI Standard 710 (I-P).