Tandem louvre dampers

  • Two dampers in one (a real alternative to a double louvre damper)
  • with sealing air 100% lock as per UVV/TRD
  • High impermeability with flexible stainless steel seal (short seal length)
  • very little pressure loss (flow-through damper vane in standard steel constructions – lattice works / no built-in bridges)
  • good controllability
  • Number of vanes, bearings, levers and connecting rods only 50% as compared to double louvre dampers
  • Short overall length (little adjustment and maintenance work required)
  • Possible use as fast opening / fast closing safety damper (regulating time < 5 s)