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Bard part 5651-162BX is an OEM expansion valve with 3/8 inch by 3/8 inch connections used in Bard wall-mounted air conditioners and related Bard HVAC equipment to meter refrigerant into the evaporator for proper superheat control and stable system operation. Replacing a restricted, leaking, or misfeeding valve helps correct issues like poor cooling capacity, coil flooding or starving, and abnormal suction pressures, and it is especially important to match the exact Bard part number since valve selection is tied to the unit design and refrigerant circuit. For best results, confirm fitment by model and serial number, and follow standard refrigeration service practices for brazing, evacuation, and charging when installing 5651-162BX.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.