Self metering foam proportioning system

A fire fighting fluid proportioning system and method including a fire fighting fluid conduit in fluid communication with a fire fighting fluid regulating valve (RV) and a venturi, the venturi in fluid communication with a valve source (FCI) of fire fighting foam concentrate, and having a pilot valv...

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Bibliographische Detailangaben
Hauptverfasser:	LAVERGNE, ERIC, CRABTREE, DENNIS W, BRINKERHOFF, DUANE J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS FIRE-FIGHTING HUMAN NECESSITIES LIFE-SAVING NOZZLES PERFORMING OPERATIONS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	A fire fighting fluid proportioning system and method including a fire fighting fluid conduit in fluid communication with a fire fighting fluid regulating valve (RV) and a venturi, the venturi in fluid communication with a valve source (FCI) of fire fighting foam concentrate, and having a pilot valve (CP) connected directly or indirectly to the regulating valve (RV) and the concentrate source valve (VMO) and adapted to adjust, directly or indirectly, the regulating valve and the source valve in response to a sensed indicia of fire fighting fluid pressure in the conduit.