The Emerson Flow Control (Alco) 048212-1/2 EK-304 Filter Drier is a refrigerant filtration component designed to remove moisture, acids, and contaminants from HVAC and refrigeration systems. It uses a desiccant material to absorb moisture while filtering harmful particles from the refrigerant flow. Featuring 1/2-inch SAE connections, it is suitable for air conditioning units, heat pum... https://www.partshnc.com/048212-emerson-flow-control-alco-12-sae-filter-drier-ek-304