Emerson Flow Controls A4F-D BTAS-4 Replaceable Filter Drier Cartridge is a replacement element for the suction-line filter-dryer housing BTAS-4, designed for use in refrigeration and air-conditioning systems. The cartridge removes moisture and entrapped contaminants from refrigerant as it passes through the suction line, helping protect compressors and downstream components. Sold as part number 049485, this A4F-D cartridge is manufactured for Emerson's ALCO CONTROLS line and fits BTAS-4 housings used in HVAC/R equipment, retrofit projects, and service replacements. Use in systems that employ BTAS-4 filter-dryer assemblies to maintain refrigerant purity and system reliability.
