A - Human Necessities – 62 – C
Patent
A - Human Necessities
62
C
A62C 27/00 (2006.01) A62C 31/00 (2006.01) B60P 3/22 (2006.01) B60P 3/30 (2006.01) E01H 1/00 (2006.01) E01H 3/02 (2006.01)
Patent
CA 2166597
A pressurization system for a tank on a water truck includes a pipe connected at one end via a remotely controllable three-way valve directly into the engine exhaust system of the truck and at the other end into a top portion of the water tank. Engine exhaust is thus selectively introduced into the water tank to pressurize the tank. The tank includes a top-mounted fill opening with an internal, counter-weighted flapper valve. With the internal flapper valve, the truck can be driven beneath a high volume water source and water from the source, when it hits the counter-weighted flapper valve, opens the valve by urging the flapper against the action of the counter-weight, but the flapper valve is once again closed by action of the counter-weight when water flow ceases. An anti-siphon orifice in a water outlet conduit serves to prevent water from freezing in the outlet conduit once pressurization is stopped.
Fetherstonhaugh & Co.
Herzog Contracting Corporation
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