Rectangular fire dampers with a fire resistance of 2 hours. When the temperature in the damper rises above 72 °C the thermo-electrical link gets triggered and the damper will close. When closed, the ‘palusol’ expanding material around the fireblade will swell and assure a fire and air-tight seal against hot air and smoke. The tunnel and blade are made out of fire resistant PromatectH®. The CU2 + BFLT/ BFNT230 fire dampers will have an automatic operating mechanism by means of an actuator with indication of the blade position. An end and begin of range switch is included within the actuator

L (mm) =  1000

H (mm) =  500

X = (H/2)-274

Y =  (H/2)-148

 light-weight PromatectH® fireproof housing 

PromatectH® fireproof blade 

Palusol seal around the blade 

Actuator BELIMO BLFT230 (small dimensions) or BFNT230(Other sizes) 

Standard equipped with duct connection flages of 30mm (other flange types available upon request)

CONSTRUCTION

 1. Connection flange

2. Casing out of refractory material

3. Damper blade 

4. Operating mechanism 

5. Sealing cold smoke 

6. Blade bumper 

7. Intumescent strip 

8. Fusible link 72°C 

9. Product identification