RS-G is a circular non-return (backdraft) damper, used between circular duct sections and allowing a single direction of air flow.
The RS-G damper is designed for ventilation duct systems that require a class D seal according to EN 12237.
The circular non-return damper is mounted between the ventilation ducts and allows a single direction of air flow.
This damper is often installed upstream of an introduction or evacuation of air unit to prevent the air backflow.
The damper blades open when overpressure/airflow acts on them.
The damper is provided with a sealing gasket, butterfly blades and a return spring that closes the blades when the pressure drops.
Closing the blades prevents the return of air to the duct.