Fire damper GERMIC-DU is designed for automatic closing of ventilation channels or openings in building envelopes, and are installed in exhaust and supply smoke ventilation systems, as well as systems for removal of gas and smoke after fire from premises protected by gas, aerosol or powder fire extinguishing systems. According to their functional purpose they are used as:
-normally closed (N);
-smoke (D);
Fire resistance limit:
-normally closed - EI 120;
-smoke - E 120;
The valves meet the requirements of GOST RV 20.39.304-98 for resistance to seismic shock with the amplitude of the half-wave pulse of acceleration of 20 g (196 m/s2) and duration of 30 - 50 ms..
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