The shut-off (butterfly) fire dampers are manufactured in the following nominal sizes: DN100, DN125, DN160, DN200, DN250. The fire dampers are equipped with a thermal fuse mechanism ensuring the damper switch to the safe position in case of reaching an ambient temperature equal to or higher than 72°C. The fire dampers allow using limit switches signalling closed position of the damper blade (1 limit switch) or blades (in case of using 2 limit switches). The casing is made from galvanised steel sheet; the fire damper blade is made from a silicate cement board.
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The fire dampers are manufactured in the following nominal
|Shut-off (butterfly) fire dampers|
The butterfly type fire dampers are used in small diameter applications.
Diameters: ø 100–250,
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,
|Circular Twin Blade Fire Damper (Butterfly type)|