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The Bard 905-0628 Cooling TXV Assembly is an OEM thermostatic expansion valve used in select Bard wall-mounted air conditioners to meter refrigerant into the evaporator coil based on load, helping maintain stable superheat and consistent cooling performance. A failing or restricted TXV can contribute to symptoms like poor capacity, abnormal suction pressure, coil icing, or erratic temperature control, so replacing it with the correct Bard factory part helps restore proper refrigerant flow characteristics and match the unit’s original design. Because TXVs are application-specific by refrigerant and system configuration, confirm compatibility by unit model and serial number, and plan for standard refrigeration best practices such as clean brazing, proper evacuation, and refrigerant charge verification after installation.