FIELD: fire-fighting equipment; applicable in supply of continuous or dispersed with drop controlled dispersity jet of fire- extinguishing fluid, mainly, water. SUBSTANCE: fire-hole barrel has body in form of pipeline with joining unit, shutoff unit and nozzle. Installed in barrel body after nozzle is hydraulic impact device in form of plate-seat valve pair with spring-loaded plate. Shutoff valve with smooth variation of its flow area is installed on drain line of hydraulic impact device. EFFECT: increased velocity of fluid outflowing from nozzle and distance of fluid jet with improved quality of dispersion due to considerable use of fluid pressure in front of nozzle without pressure variation at barrel inlet. 1 dwg
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