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Bard part number 1012-320 is an OEM TXV retaining nut used in the refrigeration circuit to secure the thermostatic expansion valve connection so the valve and line set remain properly seated and leak resistant under normal operating vibration and temperature changes. When a retaining nut is damaged, rounded, or will not torque correctly, replacing it with the correct Bard OEM hardware helps maintain a tight, reliable fit on the metering assembly and supports stable refrigerant flow control for proper cooling performance. Match this part to your unit model and serial and confirm the TXV connection style before ordering, since retaining nuts can vary by valve and fitting size across Bard wall mount families.
* Orders less than $50 may incure a minimum order fee.