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Bard 8406-079BX - Differential Pressure Switch
The Bard 8406-079BX is an OEM differential pressure switch set to operate at 0.63 inches water column, specified as open on pressure fall, and is commonly used in Bard wall mounted HVAC equipment to verify proper airflow or pressure conditions for safe unit operation. This switch helps the system prove that the fan and air path are performing correctly, which can prevent nuisance trips and protect key components when filters load up, venting is restricted, or airflow is otherwise out of range. For best results, confirm the required setpoint and switch action in your Bard service literature and match the existing tubing/port connections and mounting style before ordering.
- Technical Specifications
- Product number: 8406-079BX
- Manufacturer description: Diff. Press. Sw. .63" Open On Fall
- HTS Code: "9032.90.6020"
- Previous Versions
- 8406-079 (Obsolete, superseded by 8406-079BX)
- 8406-069 (Obsolete, superseded by 8406-079)
- 8406-071 (Obsolete, superseded by 8406-079)
$27.00 *
* Orders less than $50 may incure a minimum order fee.
What does the "BX" suffix mean?
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.