The check valves have white marks on the “top” side. When first using your pump, placing the leather cups in water for a few minutes will allow them to conform to the diameter of the pump barrel and work more effectively. When wet, these cups will seat in the barrel of the pump. ![]() The pump uses two leather cups back-to-back, attached to the plunger handle, to move material into the pump and out through the hose. If you've found a rich spot that is hard to access, these two hand dredges can produce some decent gold! Also check out the many accessories that make your hand dredge even better! ![]() It helps you get the gold out of some really tight spaces, a hand dredge is well, handy, when you're prospecting along a river. Gold can hide down in the deepest part of a crack or crevice or behind a boulder and often is best reached with a hand dredge, also called a "sucker gun" or "suction gun." This gold prospecting tool is ideal for working below the water line when a motorized dredge cannot be used.
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