DDI BiPlane Damper Sealing System

  • DDI Biplane blades do not overlap or close against a seat, but controls leakage by sweeping one surface next to another.

  • Optional flexible seals bridge the remaining gap and extend the sealing range of the rigid edges.

  • All flexible seals except the trailing face blade to frame seal are pressure loaded, preventing flutter.

  • DDI exclusive spring loaded jamb seal keeps the blade end leak gap constant.

  • No other system has lower leakage.

  • No other system is as durable.