American Aldes CAR-FEA-II Constant Airflow Regulators are modulating orifices that automatically regulate airflows in duct systems to constant levels. The passive control element responds to duct pressure and requires no electric or pneumatic sensors or controls. The CAR-FEA-II compensates for changes in duct pressure caused by thermal stack effect, building pressure, dust-clogged filters, etc. The CAR-FEA-II also provides a low-cost solution to balancing forced-air systems for heating, air conditioning and ventilation, eliminating the need for on-site balancing.

The active control element is a unique aerofoil. The aero-wing damper lifts in response to increasing static pressure. This operation regulates the free-area opening through the control, resulting in maintenance of velocity and specific airflow set points.

Pressure Range: 0.2 to 0.8 in. w.g. (50-200 Pa)
Use: Exhaust or Return Air
Application: New Construction
Duct Type: Square/Rectangular
Assembly Includes: CAR-II, Steel Sleeve, and Fire Damper

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