For regulating the flow rate of supply, recirculating or exhaust air in ducted ventilation and air conditioning systems.

There is no perimeter heating or protection against blade icing.

It differs from standard air valves in the increased contact tightness of the blades; it differs in a smaller volume of flow through the valve.

Special design allows reducing heat loss through the valve flaps.

Processed air must be free of solid, fibrous, sticky or aggressive impurities; it is equipped with an electric drive and controlled remotely or by means of a handle.