Airflow control device for dashboard outlets has precise closed position for side butterfly valves while middle one has several closed positions

摘要

The airflow control device (1) has a housing containing butterfly valves for the two side outlets and another butterfly valve (3.2) for the central outlet. Those for the side outlets have a precise closed position, while the central one has several closed positions in the housing part (2.2) in a continuous sequence within a turning region (13) of the valve shaft (4).