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Bard part 5651-116BX is an OEM base valve used in the refrigerant circuit on Bard wall mount HVAC equipment to help connect 3/8 inch and 1/4 inch lines where a compact, serviceable valve connection is required. Replacing a worn or leaking base valve is a practical way to restore proper refrigerant containment and maintain stable system operation after service work or component replacement. As a genuine Bard replacement part, 5651-116BX is built for correct fit and dependable sealing when installed by qualified HVAC personnel. Confirm line sizes and the unit model and serial number before ordering to ensure proper 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.