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Bard part 5650-040BX is an OEM reversing valve assembly used in Bard heat pump wall-mount and packaged HVAC equipment to direct refrigerant flow so the system can change between heating and cooling modes. This valve is specified with 7/8 inch and 1/2 inch line connections and includes a 24V coil for proper actuation from the unit controls, making it a critical component when diagnosing a system that will not switch modes, is stuck in heat or cool, or shows symptoms consistent with an internal valve issue. For best fit and performance, confirm the connection sizes and coil voltage match your unit model and serial requirements before ordering.
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.