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