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The Bard 5651-234BX is an OEM thermal expansion valve used in Bard wall-mount air conditioners and heat pumps to meter refrigerant into the evaporator for stable superheat control and dependable cooling performance. With 3/8 inch by 3/8 inch connections and boxed packaging, this TXV is a common fix when a system is starving or flooding the evaporator, hunting, or showing poor capacity due to a sticking or restricted metering device. For best results, confirm the unit model and refrigerant type from the Bard service literature before ordering, since TXVs are application-specific and correct match is critical for proper charge and operation.
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.