Butterfly fire dampers

Photo of product family: Butterfly fire dampers

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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Alnor Systemy Wentylacji
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05-552 Wola Mrokowska

tel. +48 22 737 40 00