VARIABLE FLOW ADJUSTMENT DAMPER (VAV)

They can be used for control, regulation and shut-off tasks in the supply or suction ducts of heating cooling systems, for applications with variable flow rates or variable flow rates at high speeds in a single duct. They are generally used in blowing ducts. Air flow rate control is independent of pressure, provided by a pressure difference sensor and a special damper that can be adjusted depending on the motorized electronic speed control device. In practice, VAV boxes act as CAV when operated at constant flow.