FIELD: fire-fighting, particularly liquid spraying equipment included in deluge fire-extinguishing systems adapted to protect enterprises against fire.
SUBSTANCE: sprinkler comprises deluge nozzle adapted to be connected to supply pipe of distribution pipeline. The nozzle is provided with check valve installed at nozzle inlet. The check valve is made as bush with spring-loaded body of revolution located inside the bush. The body of revolution may be formed as a ball supported by pipe walls. The bush is provided with lock-nut, which may retain the bush on the pipe.
EFFECT: increased responsibility and reliability of fire-fighting equipment, improved water-tightness of sprinkler installed in its working position, as well as improved manufacturability and adjustment.
1 dwg
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