Spring-loaded backdraft damper for round ducts. The damper prevents back draft when the system is off.
Gravity backdraft damper for round air duct.
Gravity backdraft damper for air flow cut-off in rectangular air duct.
Air damper for air flow control in round air ducts.
Air damper for air flow control in rectangular air ducts.
Air damper for air flow cut-off in round air ducts.
Gravity louvre shutter for rectangular air ducts.
Gravity louvre shutter for air flow cut-off in rectangular air ducts.
The KKV backdraft damper is designed for automatic shutoff of the air duct during the fan standby and reverse back flow prevention when the ventilation system is off. Designed for mounting of VKV, VKH, VKV EC, VKH EC fan series.
For prevention of smoke and fire propagation through ventilation and air conditioning ducts in case of fire. Mounted in the ventilation ducts laid through fireproof walls and ceilings. Dimension range from 100 to 200 mm.
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