When water, gravel, and gold are sucked up through the suction hose, everything makes its way in the direction of the water pump and the header box. A 4-inch model is popular due to its combination of portability and high capacity-these babies can vacuum up a great deal of gravel! The diameter of your dredge’s suction hose ultimately decides how much gravel and water you can suck up into your dredge. ![]() Suction gold dredges work similarly to high-powered vacuum cleaners, but with a few extra steps to filter out the gold you’re after. Suction dredges come in a variety of sizes let’s look at the popular 4-inch variety. Let’s learn more about the parts of a suction dredge that make it so powerful, and how they work together to find gold in gravel. Wondering how 4-inch suction gold dredges work? Look no further than Northwest Detector’s handy guide to the suction dredging process. Whether you’re a seasoned prospector or starting a brand-new hobby, you’ve probably heard about suction dredges before. Thankfully, the methods used for finding that gold have advanced far beyond simple panning by hand!Ī suction dredge is a powerful tool used by many prospectors to sift through shallow waters in search of gold. ![]() While the gold rushes of the 19 th century may be long gone, hobbyists still look for gold in river deposits and gravelly banks. Gold prospecting has a long and storied history. Treasureseeker Series ( E-TRAC, Safari and Explorer series. Anti-Interference Series ( SD/GP and GPX detectors.
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