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The Bard 905-0514 Cooling TXV Assembly is an OEM thermostatic expansion valve assembly used in the refrigeration circuit of select Bard wall mounted air conditioners and heat pump units to meter liquid refrigerant into the evaporator coil while maintaining proper superheat. A properly matched TXV helps stabilize suction pressure, prevent evaporator flooding, and restore consistent cooling performance after a stuck, restricted, or leaking valve causes poor capacity, icing, or erratic operation. Because TXVs are application specific by model and refrigerant, confirm the exact unit model and serial compatibility before ordering Bard 905-0514 to ensure correct tonnage and charge control.