If the eductor is connected to the highest point in the system, it will be possible to remove all of the air. The goal is to use the eductor to pull a vacuum on the pump shell and cause water to enter and completely fill the pump shell. Seal the suction pipe by lowering it into the water.Ĭonnect the suction port of an eductor to a port in the top of the pump shell or in the discharge pipe if the pump is a top discharge model. The discharge line can be sealed using a flap valve or a pinch-to-prime device, filling it with water or by immersing a portion of it near the point where it leaves the dredge hull. Seal the discharge line at some point near the pump. Here are a few ways to expel air from your dredge pump/suncton line. There may be quite a few causes but the most common reason why your dredge pump wont pick is simply AIR! Air actually prevents your dredge pump from priming. Often, dredge masters/engineers have experience this before a situation where you tried severally but your dredge pump wont just pick water/slurry.
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