The butterfly type fire dampers are used in small diameter applications.
The damper blade consists of two semi-circular parts connected by a fusible link.
Diameters: ø 100–250,
CE certified acc. to EN 15650,
Tested in accordance with EN 1366-2, classified acc. to EN 13501-3+A1,
Fire resistance EIS 60, 90, 120,
Corrosion resistant acc. to EN 15650
NOTE!
The CFDM 250 is tested only for EI90S inside the concrete (solid) ceiling, not inside wall.
The CFDM 250 has same construction as CFDM in smaller DNs dampers, but the materials are stronger/thicker.
The advantage is that the CFDM 250 is shorter comparing the normal fire dampers, optimal for the specific installation inside shaft ceiling.
The butterfly type fire dampers are used in small diameter applications. The damper blade consists of two semi-circular parts connected by a fusible link.
Diameters: ø 100–200,CE certified acc. to EN 15650,Tested in accordance with EN 1366-2, classified acc. to EN 13501-3+A1,Fire resistance EIS 60, 90, 120,Corrosion resistant acc. to EN 15650,with fusible link 72°C,