Abstract: The invention relates to a fire valve made of a body (100) consisting of a frame (50) and a tunnel (10) in which a butterfly damper (200) is pivotably mounted between a closed position, separating an inner side (I) from an outer side (E), and an open holding position. The body (100) and the butterfly damper (200) formed by a blade (210) are each produced by assembling cut and pasted refractory sand-lime plates (11, 51, 211). The assembly forming the body (100) and that forming the butterfly damper (200) are provided with steel reinforcements directly attached to the plate assemblies. The reinforcements (60, 70) of the body (100) are attached onto the outer side of the tunnel (10) and of the frame (50) and the reinforcements (240, 250) of the butterfly damper (200) are attached onto both sides of the blade (210). The butterfly damper is locked by the expansion of the metal elements.

Abstract: The invention relates to a shutter actuator including a translatably guided carriage (10) rigidly connected to the shaft (4) in the housing (3), and comprises: a rack (11) that meshes with the cog (20) of the outlet shaft (4) linked to the flap (2-1) of the shutter (2); a bearing (13) for a triggering spring (70); a bearing member (12) for a cocking member (30) that drives the carriage (10); and a locking notch (14-1) for receiving a locking member (42) supported by a locking arm (40).

Abstract: The invention relates to a fire valve made of a body (100) consisting of a frame (50) and a tunnel (10) in which a butterfly damper (200) is pivotably mounted between a closed position, separating an inner side (I) from an outer side (E), and am open holding position. The body (100) and the butterfly damper (200) formed by a blade (210) are each produced by assembling cut and pasted refractory sand-lime plates (11, 51, 211). The assembly forming the body (100) and that forming the butterfly damper (200) are provided with steel reinforcements directly attached to the plate assemblies. The reinforcements (60, 70) of the body (100) are attached onto the outer side of the tunnel (10) and of the frame (50) and the reinforcements (240, 250) of the butterfly damper (200) are attached onto both sides of the blade (210). The butterfly damper is locked by the expansion of the metal elements.

Abstract: The invention relates to a shutter actuator including a translatably guided carriage (10) rigidly connected to the shaft (4) in the housing (3), and comprises: a rack (11) that meshes with the cog (20) of the outlet shaft (4) linked to the flap (2-1) of the shutter (2); a bearing (13) for a triggering spring (70); a bearing member (12) for a cocking member (30) that drives the carriage (10); and a locking notch (14-1) for receiving a locking member (42) supported by a locking arm (40).