![]() Occurs when the pressure in the dredge pump inlet is lower than vapor pressure of the waterĮntering the pump. When this is brought to their attention, they say, “That sound is just rock going through the pump.” Often they get too close and operate with a slight case of continuous cavitation. ![]() Many hullpump dredge operators, trying to maintain maximum production, tiptoe right along the edge of cavitation. Effective vacuum-the difference between clear water and the maximum or cavitation vacuum-is all that is available to lift solids into the pump inlet. Willard Says…… Vacuum details the head losses that occur on the inlet side of a dredge pump. Way to tell when dredge pump cavitation is occurring We will share with you the one, foolproof There are other, more subtle, causes of cavitation. Most dredge operators recognize the obvious symptoms of cavitation and know that the main cause is suction inlet choke-off or vacuum that is too high as a result of a cave-in. ![]() Cavitation is a common, destructive, little-understood problem that can seriously interfere with dredge pump operation. ![]()
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