| 摘要 |
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. By releasing the sealing effect of the valve by removing the locking effect between said at least 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 being caused by releasing mechanism. |
