A - Human Necessities – 62 – C
Patent
A - Human Necessities
62
C
137/24, 341/34
A62C 35/00 (2006.01)
Patent
CA 1201641
TITLE Wetting Agent Injection System ABSTRACT OF THE DISCLOSURE A wetting agent injection system is shown accord- ing to the preferred embodiment of the present invention utilized with firefighting apparatus having a positive pressure pump. The purpose of the system is to automatically inject a wetting agent into the pump during its normal firefighting operation. The system is controlled by flow switches located on one or more discharge lines of the pump, by a float switch in the wetting agent supply tank, and by regulated air pressure in the wetting agent supply tank. When the flow switches detect water flowing and when the float switch does not detect an empty supply tank, they activate relays within the control box of the system, which in turn activate electric solenoid valves permitting wetting agent to be injected into the suction side of the pump. Once in the pump, the wetting agent rapidly mixes with the water. The water treated with wetting agent penetrates better, reaching deeper into the material mass than untreated water can. Adjustable metering valves at the point of injection are further provided for allowing different flow settings and wetting agent viscosities.
472956
Little Ralph V.
Gowling Lafleur Henderson Llp
Little Ralph V.
LandOfFree
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