Barometric BH-16 is a 16" Round Barometric Bypass Damper with 24-gauge steel shell, aluminum shaft, nylon bushings, blade seals, and adjustable weights.
Barometric BH Series Bypass Dampers are designed to automatically bypass excess air when increases in duct pressure occur due to closing of zone dampers. Various relief air control settings are accomplished by simple adjustment of the weight on the arm. Barometric bypass dampers are recommended for systems up to 0.75” WC of static pressure. These come as horizontal (BH) or vertical (BV) configuration in both round and rectangular.
As individual zone dampers open and close, the HVAC system static pressure changes. In order to maintain design airflow and static pressure as well as prevent air noise, a barometric bypass damper is used to direct a portion of the air from the main supply duct back to the return.
The BH Series are easy to adjust, installation flexibility , decreases system noise, and various sizes are available.
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