Bard 8406-078 - Differential pressure switch 0.38 WC

Bard part number 8406-078 is an OEM differential pressure switch set at 0.38 inches water column that opens on a falling pressure signal, commonly used as a safety and proving switch to confirm proper airflow or draft before allowing normal unit operation. In Bard wall mounted equipment, this type of switch helps protect the system by responding when the expected pressure differential is not maintained due to issues like restricted airflow, blocked vents, or a failing fan. Replace with the correct 8406-078 to maintain proper control logic and reliability, and verify the required setpoint and tubing/port connections match your unit’s parts list before ordering.

Technical Specifications
Product number: 8406-078
Manufacturer description: Diff. Press. Sw. .38" Open On Fall
Weight: 0.362 lbs
HTS Code: "8415.90.8085"

Previous Versions
8406-056 (Obsolete, superseded by 8406-078)
8406-059 (Obsolete, superseded by 8406-078)
8406-068 (Obsolete, superseded by 8406-078)
8406-098 (Obsolete, superseded by 8406-078)

$24.00 *

* Orders less than $50 may incure a minimum order fee.