|
Bard 904-0691BX is an OEM preconditioner valve assembly supplied boxed, used in Bard ventilation and preconditioning configurations to control airflow and help the unit regulate outside-air operation as designed. This valve assembly is a direct-fit replacement intended to restore proper damper or preconditioner function when a valve is sticking, leaking, or not responding correctly, which can cause ventilation issues, comfort complaints, or inconsistent unit operation. Because this is a control-related component, confirm compatibility by matching your unit model and the exact part number from the Bard parts list or service literature before ordering to ensure correct electrical and mechanical fit.
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.