| 摘要 |
This publication describes a method and a nozzle (11) for firefighting using a firefighting medium emitted from one or more nozzles(11) installed on a wall or in a ceiling (10). The firefighting medium is supplied and allowed to escape from the nozzle (11) through one or more apertures, the nozzle (10) being provided with an internally arranged valve (19,20) in sealing contact with a valve seat (21) until the valve(19,20) is released from its sealing position. The release is caused by a heat sensible release mechanism (25) acting on the valve (19,20), whereby the sealing effect of the valve (19,20) is relieved. A locking force required for maintaining the sealing effect by means of a removable cap or cover (15) is provided, attached to the nozzle (11) front, said locking force being established between at least two interacting surfaces. By releasing the sealing effect of the valve (19,20) by removing the locking effect between said at least two interacting surfaces, the cap or cover (15) is allowed to drop off its seat on the nozzle (11), relieving the press causing the sealing effect on the valve (19,20) of the nozzle (11), the removal of the cap or cover (15) being caused by releasing mechanism (25). |
