![]() For the test of the Model 625 HD, as the full size dredge, it was equipped with 24" of class 200 1 1/2 in. The per stroke capacity of the Model 625 HD is over 57 cubic inches per stroke. For all of the models: standard HD Dredge, Dry Vac, Crevice Dredge, the Bilge dredge and the Aquarium Gravel Vacuum. In the hands of an adult person of above average strength a constant sealed suction vacuum rating of greater than minus -10 inches/hg was achieved and held consistently, that's over 1/3 of an atmosphere. Also, pulling the handle generate's more than double the mechanical force with the water compared to siphoning thereby improving gold recovery.Ī standard in/hg vacuum gauge was used to test the Model 625 HD assembled to be used as each of the available models. With a single elongation stroke of the pump, these hand powered suction separator dredges are capable of creating enormous suction at the nozzle end due to their sealed no leaks construction. Model 625 HD series Portable suction separator GOLD dredges, hand powered. ![]() Hand Powered Portable Suction Separator GOLD Dredge ![]() New! Golden Sniffer Products Auctioning Block Click Link
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