CFDM fire dampers are diaphragms in ducted ventilation systems that prevent the spread of fire and products of combustion from one fire segment to another by closing the air duct at points of fire separation structures. The damper diaphragm automatically closes the air duct with a closing spring.
BRF 125
The BRF 125 airtight backflow prevention damper is installed inside the ventilation duct. It effectively prevents undesirable backflow of air.
The BRF 125 air-tight backflow prevention damper is installed inside the ventilation duct. It effectively prevents undesirable backflow of ventilation air. Compared to metal blades, the damper’s rubber diaphragm ensures optimum system tightness with the possibly lowest noise level.
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CAR backflow prevention device
A CAR, airtight backflow prevention device, is used in ventilation systems fitted for round ventilation ducts. It prevents the so-called air backflow and protects rooms against cooling in the winter.