ROOM AIR AND / OR AIR CONDITIONING SYSTEM FOR VENTILATING A ROOM OR ROOMS WITH AT LEAST ONE MAIN AIR LINE AND METHOD FOR REGULATING A ROOM AIR AND / OR AIR CONDITIONING SYSTEM FOR VENTILATING A ROOM OR ROOMS WITH AT LEAST ONE MAIN AIR LINE
SYSTEM FOR CONTROLLING AND/OR REGULATING A VOLUME FLOW FLOWING IN A FLOW CHANNEL OF A VENTILATION SYSTEM, PREFERABLY A VENTILATION LABORATORY OR CLEAN ROOM SYSTEM
FIRE PROTECTION FLAP WITH A HOUSING HAVING A HOUSING WALL AND WITH TWO, PREFERABLY SEMICIRCULAR OR QUADRANGULAR FLAP HALVES PIVOTALLY MOUNTED BETWEEN AN OPEN POSITION AND A CLOSED POSITION, PREFERABLY IN THE CENTRE OF THE HOUSING CROSS-SECTION
FIRE DAMPER WITH A HOUSING HAVING AT LEAST ONE HOUSING WALL AND WITH A FLAP LEAF MOUNTED IN SUCH A MANNER THAT IT CAN BE PIVOTED ABOUT AN AXIS OF ROTATION BETWEEN AN OPEN POSITION AND A CLOSED POSITION
