| 摘要 |
<p>The invention application relates to a valve for pipelines of fire fighting systems, with a supply line (32) for extinguishing fluid loaded by excess pressure, with a drain line (34) for the extinguishing fluid, with locking means (36, 46) arranged between the supply line (32) and the drain line (34), and with an actuating means (38) operating the locking means (36, 46) for setting the locking means (36, 46) in an open position and a closed position, wherein, in the rest state, the locking means (36, 46) are in the closed position and wherein, in the case of a fire, the actuating means (38) adjust the locking means (36, 46) from the closed position into the open position in such a way that extinguishing fluid flows from the supply line (32) into the drain line (34). In order to be able to carry out maintenance operations without the loss of extinguishing fluid it is proposed that the locking means (36, 46) are formed in such a way that, by means of the actuating means (38), in a maintenance operation, the locking means (36, 46) can be adjusted from their closed position in such a way that, during maintenance operation, no extinguishing fluid flows from the supply line (38) into drain line (34).</p> |
