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The Bard 905-0622 Cooling TXV Assembly is an OEM thermostatic expansion valve assembly used in Bard wall-mounted air conditioners and heat pumps to meter refrigerant into the evaporator during cooling operation. A properly operating TXV helps maintain stable superheat, supports consistent capacity, and protects the compressor from floodback under varying load conditions. This is a direct-fit Bard replacement part intended to restore correct refrigerant control when a valve is sticking, restricted, or out of adjustment; confirm unit model and refrigerant type in the Bard service literature before ordering to ensure proper application and calibration.