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The Bard 905-0627 Cooling TXV Assembly is an OEM thermostatic expansion valve assembly used in the refrigerant circuit of select Bard wall-mounted air conditioners and heat pump units to meter liquid refrigerant into the evaporator based on load, helping maintain proper superheat and stable cooling performance. Replacing a sticking or restricted TXV can resolve issues like poor cooling, coil freeze-ups, or erratic suction pressures, but correct fit depends on the specific unit model and refrigerant match. As a genuine Bard part, 905-0627 is built to Bard specifications for dependable operation and proper system control when installed by a qualified technician following standard evacuation, brazing, and leak-check procedures.