| 摘要 |
<p>The invention relates to a portable fire extinguishing device which has a hand lance for discharging an aqueous fluid and comprising, in combination: a fluid supply line (3); two nozzles (9, 10) having orifices for producing two differently shaped jets; means (6) for distributing the supplied fluid to one or other of the nozzles, said means having return means for supplying one of the two nozzles with fluid by default; and a controller (2) for controlling the flow rate of the supply fluid.</p> |
