Abstract: A firefighting medium is allowed to escape from a nozzle through apertures, the nozzle being provided with an internally arranged valve in sealing contact with a valve seat until the valve is released from its sealing position. The release is caused by a heat sensible release mechanism acting on the valve, whereby the sealing effect of the valve is relieved. A locking force required for maintaining the sealing effect by a removable cap or cover is provided, attached to the nozzle front, the locking force being established between at least two interacting surfaces. By releasing the sealing effect of the valve by removing the locking effect between the two interacting surfaces, the cap or cover is allowed to drop off its seat on the nozzle, relieving the press causing the sealing effect on the valve of the nozzle, the removal of the cap or cover caused by releasing mechanism.

Abstract: Method and a fire-fighting extinguisher nozzle for providing a spray of fine droplet mist of liquid into a space, room or a cavity, comprises a number of openings in the exterior surface of the nozzle. Openings communicate with a liquid source through at least one small diameter drilled hole in a nozzle material, enabling liquid in the form of a mist to be directed at least partly in lateral direction and/or at least partly in a sector axially out from the nozzle. The nozzle is also being associated with trigger mechanism, initiating the mist creating effect by allowing an extinguishing liquid to be sprayed out the openings of the nozzle when heat or fumes are detected. Some of the drilled holes are configured in such way that a deflecting surface is provided inside the drilled holed in the nozzle material in the vicinity of the outlet, causing formation of the mist spray of crushed liquid consisting of fine, minute droplets just inside the drilled holes.

Abstract: This publication describes a method and a nozzle for firefighting using a firefighting medium emitted from one or more nozzles installed on a wall or in a ceiling. The firefighting medium is supplied and allowed to escape from the nozzle through one or more apertures, the nozzle being provided with an internally arranged valve in sealing contact with a valve seat until the valve is released from its scaling position. The release is caused by a heat sensible release mechanism acting on the valve whereby the sealing effect of the valve is relieved. A locking force required for maintaining the sealing effect by means of a removable cap or cover is provided, attached to the nozzle front, said locking force being established between at least two interacting surfaces.

Abstract: Method and a fire-fighting extinguisher nozzle for providing a spray of fine droplet mist of liquid into a space, room or a cavity, comprises a number of openings in the exterior surface of the nozzle. Openings communicate with a liquid source through at least one small diameter drilled hole in a nozzle material, enabling liquid in the form of a mist to be directed at least partly in lateral direction and/or at least partly in a sector axially out from the nozzle. The nozzle is also being associated with trigger mechanism, initiating the mist creating effect by allowing an extinguishing liquid to be sprayed out the openings of the nozzle when heat or fumes are detected. Some of the drilled holes are configured in such way that a deflecting surface is provided inside the drilled holed in the nozzle material in the vicinity of the outlet, causing formation of the mist spray of crushed liquid consisting of fine, minute droplets just inside the drilled holes.