Fire fighting nozzle and method including pressure regulation, chemical and education features
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United States of America Patent
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Jun 15, 2004
Grant Date -
N/A
app pub date -
Apr 15, 1999
filing date -
Apr 6, 1998
priority date (Note) -
In Force
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Abstract
A fire fighting nozzle for extinguishing industrial scale fires including improved automatic pressure regulating features, enhanced educting features having central (110) and peripheral channeling (94) for foam concentrate, combined with a capacity to throw dry chemicals. The improved pressure regulating features include a spring (50) loaded double acting baffle (13), that is positioned by fire fighting fluid in communication with a hydraulic chamber, the hydraulic chamber is preferably controlled by a relief valve (42).
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