HAND FIRE BARREL WORKING HEAD Russian patent published in 1998 - IPC

FIELD: fire fighting facilities. SUBSTANCE: working head of hand fire barrel has nozzle mounted in body and provided with movable part in which central space for jet delivery of water is formed. Movable part is coupled with fixed part to form two control spaces communicating with spray and jet water delivery spaces. Use of plates installed with end face clearance relative to each other for rotation in zone of water outlet from ring space provides adjustment of passage area and changing of head and spray angle under these conditions. Nozzle is set in definite position depending on mode of operation owing to displacement provided by pressure in one of control spaces. EFFECT: enlarged operating capabilities. 3 dwg