Flap dampers

  • with sealing air 100% lock as per UVV/TRD
  • high impermeability thanks to various sealing systems without sealing air (short seal length / little sealing air consumption)
  • very little pressure loss (unimpeded cross-section, vane swivels in canal recess)
  • very little maintenance required (few mechanically moving parts)
  • round version (2 vanes)