Motorized damper door for vehicle air duct

A motorized valve assembly (80) for use in a vehicle heating, ventilating, and air conditioning module (10) comprises a valve (83) having at least one flap (82) and is pivotable about a pivot axis. A drive unit (81) is affixed to the valve (83), and a drive interface (96) is operably connected to the drive unit (81) for inducing a pivoting force about the pivot axis.