How to bleed the mud pump of dredger

When the dredger is used for the first time or the dredger is not used for a long time, it often does not pump water. This phenomenon is common and can be easily solved by customers. That is mud pump venting, here is mainly pipeline venting. We have a valve design for the suction pipe port. Here, open the valve, lift the reamer arm down, do it back and forth for several times, and then close the valve for normal use.