FDL fire dampers are type-approved class A0 (A60) fire and gas dampers for use in offshore, marine and navy ventilation systems. The FDL can be installed in rectangular or circular ducts. The FDL dampers are used to prevent the spread of fire within the ventilation ductwork. All fire dampers have a fusible link and spring return actuator. When the blades are in the open position, the device does not cause significant pressures loss 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.
● Fixed frame and blades of painted, galvanized or stainless steel. Maintenance-free steel bearing and shafts.
● Blades without sealing.
● Nominal fuse release temperatures are 50℃, 74℃ or 100℃ degrees. Other temperatures are available.
● 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 steel              -                                               -                                            
Maintenance-free bearings     Stainless steel              -                                              Bronze bearing optional   
Shafts                                          Stainless steel              -                                               -