The "jet flare" design uses a short hose to feed water to the venturi and flare /crash box, as opposed to the older style using a long hose running out to the suction nozzle which adds both weight and expense as these hoses need to be pressure rated and not collapse, those pictures above show clearly a nice yellow dredge pump.
we will see what it will eat, but right now i have no trouble feeding it a five gallon bucket in 5-7 minutes with a large trowel.Ī suction dredge needs to have a specific pump on it, made for pressure and volume, trash pumps just wont produce the pressure needed for sucking up gravels as well as a dredge pump does. Such would be a great candidate for a Gold Cube which uses about 1100 gallon per hour 12 volt pump and can process from what the inventors claim up to 1000 pounds of classified material per hour or about a half a yard for such a little tool, i have not had that kind of volume yet to try to run on a timed basis, though i hope to this summer yet. From what i read your friend has rices sized nuggets/pickers which would make them able to pass through about 10-12 mesh, for the most part and an 8 mesh screen most all the time unless its really long wire type gold.
While i have not built my own dredge, i have run a couple and have thought about building one a time or two or improving an existing one.
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