 Click on above logo for web site CAR (Constant Airflow Regulator) The simple solution to balancing airflows The CAR is a device that automatically regulates airflows in ductwork to constant levels. Operation is completely passive. No electric or pneumatic sensors or controls are needed. The CAR provides a low cost solution to balancing forced air systems, air conditioning and ventillation, eliminating the need for onsite balancing. To a large degree the CAR compensates for changes in duct pressure due to thermal stack effect, building pressure etc. |
 Many Sizes and Airflow setpoints available:  from 100mm to 250 mm diameters flows from 4 to 306 litres/second |