FIELD: fireproofing equipment. SUBSTANCE: nozzle has casing with flow-through part formed by coaxially arranged Laval nozzles and distributing grid. Openings of distributing grid have diameter equal to 0.3-1.0 of diameter of critical nozzle. Such construction allows smoke to be effectively suppressed during fire extinguishing and people to be protected from dangerous fire effects by improved dispersion of overheated water flow. EFFECT: wider operational capabilities of nozzle and increased fire suppressing efficiency. 2 cl, 3 dwg
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