Suction Gold Dredge Basics Steve''s Guides
#0183;#32;Manufacturers rate suction dredges by the inside diameter of the main suction hose. So a 5quot; dredge has a main suction hose with a 5quot; inside diameter. However, nozzles are used on dredges which restrict the intake to a size smaller than the inside diameter to help prevent clogs. A 5quot; dredge may have a nozzle opening of 4quot; for this reason.