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Product

Fire Dampers
FDB2

 

FDB2 fire dampers are type-approved class A0 (A60) fire and gas dampers for use in offshore, marine and navy ventilation systems. The FDB2 can be installed in rectangular or circular ducts. All fire dampers have a fusible link and they prevent the spread of fire and gases within the ventilation ductwork, when the blades are in the open position, the device does not cause significant pressures loss, noise or flow disturbance. Fire dampers are set from outside and can be installed in any position. An open-closed indicator is visible on the outside of the damper. Fire dampers with non-standard dimensions can be supplied on request.
● Type-approved by most recognized classification societies, class A0 - A60 fire and gas damper when suitably insulated.
● ATEX approved. Shock tested.
● Blades contain silicone (effective up to 300 ℃) for low leakage in normal conditions and thermal expansion graphite seals (effective from 150 ℃) to increase tightness even up to 50% in a case of fire. Tightness substantially better than NORSOK requirements. (tested sized 1000X1000mm, VTT test report no. RTE 4424/04).
● Nominal fuse release temperature 50℃, 74℃ or 100℃. Other temperatures available.
● Low weight due to patented double skin blade structure.
● Automatic electrical, pneumatic or spring operation system available.
● Maximum duct pressure for damper construction 5000 Pa and maximum air velocity 15m/s. in case of high duct pressure, contact Sindex Refrigeration for finding the most suitable solution.
PART                                            MARTERIAL             FINISHING                           NOTE                                    
Frame                                          Carbon steel            Painted or Galvanized         -                                                                               
Frame                                          Stainless steel         -                                               -                                                                                
Blades                                         Steel                          Galvanized                             -                                                                               
Blades                                         Stainless                   -                                               -                                                                               
Maintenance-free bearings     Stainless                   -                                              Bronze bearing optional                                       
Shafts                                          Stainless                   -                                                                                              
 

 


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