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).