gravity-operated backdraft damper (round)

KOL-K

Designed to automatically close the cross-section of the air duct in order to avoid free air flow in ventilation systems when the fan is not operating. The blades of such dampers open under the action of air flow and automatically return to their original closed position when the air supply is stopped.

They are made only of round cross-section.

 Design:

  • general purpose industrial (N);
  • corrosion-resistant (CR).