| 摘要 |
The subject of the present invention is a firestop valve device comprising a support frame (1) surrounding an internal space (1a) intended for the passage of a gaseous stream and at least one shut-off element, referred to as flap (2), able to move between a closed position that prevents the gaseous stream from passing and an open position that allows same to pass. It comprises a partition (3) closing the internal space (1a) and one or more openings (3a) formed in said partition to allow the gaseous stream to pass, the or each opening being able to be sealed closed by the insertion and close fitting housing therein of said or one of said flaps by means of an articulation system (4a, 4b) actuated, if appropriate via a linkage system, by an actuating system. Another subject of the invention is an assembly made up of at least two such devices mounted in series. |
