Parker LLD Series filter-driers are designed for removing harmful contaminants like acids, metal chips, wax-like compounds, copper oxides and excessive moisture levels in heat pump, air conditioning and small refrigeration systems. These steel units have solid molecular sieves, performing dual functions of trapping the coarse particulate contamination and then capturing any moisture present in the system, thereby providing complete safety. They also have a leaf spring that holds the core firmly and provides a shockproof assembly for rugged use. Choose from an array of these liquid line filter-driers, available in lengths ranging between 4.437, 6 and 6.75 inches.