Fire protection for shutting off ventilation pipe has ventilation inlet pipes opening into housing inbetween closable connector pipes

摘要

The fire protection comprises a housing (2) with two connector pipes (3) fitting into a continuous ventilation pipe. A closure device is set in the housing in front of the connector pipes and the ventilation inlet pipes (12) open into the housing in the region between the closable connector pipes. The closure devices are formed as closure flaps with movable leaves.