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8406-080 OBSOLETE
- Diff. Press. Sw. .73" Open On Fall
Bard part number 8406-080 is an OEM differential pressure switch set for 0.73 in. water column and designed to open on falling pressure, helping your Bard wall-mounted HVAC equipment verify proper airflow or draft conditions before allowing the unit to run. If the pressure signal drops below the setpoint, this switch opens to help prevent nuisance operation and protect key components by indicating a restriction, airflow problem, or venting issue. Use 8406-080 when you need a direct-fit Bard replacement that maintains the original safety and control sequence, and confirm your unit model and the required WC rating before ordering to ensure correct application.
Official replacement(s):
8406-100
- Diff. Press. Sw. .73" Open On Fall