Circular Electric Fire Damper:

China Circular Electric Fire Damper:

Fire Damper is installed on the ventilation duct with fire requirement. When on fire, the temperature within the duct reaches 70℃, fire damper will automatically close quickly to avoid fire spreading. According to the shape, there are rectangular & circular type. According to the control way, there are manual, electrical, pneumatic type.The blade can be single blade or multi-blades.

Technical Specification:

Design Standard: CB/T3557-1995

Material: Steel, Stainless Steel, Steel with Galv

Fireproof Class: A0,A15, A30, A60

Certificate:ABS,BV,CCS,DNV,GL,LR,NK,KR

Main Parts:

1. Temperature Sensor

2. Electric Actuator

3. Damper Plate

4. Flange

5. Bearing

6. Damper Body

Main Functions & Features:

1)Normally the electric fire damper is connected with the control power DC24V/AC220V/AC110V to start. Otherwise, the damper is closed.
2)Under the emergency situation, the control center can cut off the power and let the damper close automatically.

3) When the duct temperature reaches 70 ± 3 ℃, or when the outside temperature reaches duct 95 ℃, the temperature fuse is blown, cut off the power, the damper closed;
4) When the damper is closed or open, it can output signals;
5) The fire damper is provided with a complete electric control box which can control to open the damper remotely or nearby.

Main Size List(mm)：