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The Bard 905-0500BX Cooling Exp. Valve Asy - Boxed is an OEM cooling expansion valve assembly used in Bard wall mount and other packaged HVAC equipment to meter refrigerant into the evaporator and maintain proper superheat for stable, efficient cooling. When a system is starving or flooding the evaporator due to a sticking or restricted valve, replacing the expansion valve assembly is a common, technician-approved repair that can restore normal suction pressure, coil temperature, and capacity. Because TXV sizing, charge type, and connections must match the exact unit configuration, confirm compatibility by model and serial number before ordering to ensure the Bard 905-0500BX is the correct fit for your application.
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.