Compact fire-extinguishing system with high-pressure foam proportioning system
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United States of America Patent
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Oct 6, 2015
Grant Date -
Sep 22, 2011
app pub date -
Mar 18, 2011
filing date -
Mar 18, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A compact, stand-alone fire-extinguishing system for use with a water source is disclosed. The fire-extinguishing system can include an engine, a pump, a foam tank, a flow meter, and a foamant adjustment valve. The flow meter can be a variable area flow meter and indicate an instantaneous concentration of a water-foamant solution. The foamant adjustment valve can be a needle valve. A head injector can be coupled to the pump. The head injector provides foamant to be mixed with water inside the pump to create a water-foamant solution. The fire-extinguishing system may also include an inlet mixing valve assembly and an unloader valve to recirculate the water-foamant solution.
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