As the drawing showed, this is a typical technics of picking thick solution, which reach the
goal for far delivery through the pumps on two dredgers.
The total capacity is 1500m3/h, we suggest that the pipe size should be 14”, and then the mean
velocity is 4.33m/s. The friction loss and resistance of the pipe will be smaller, at the same
time, it could not cause that the slurry subsides in the pipe line. When we use the 14”
rubber pipe line, the friction resistance factor should be f=0.017.
1. EHM-8ST
Considering the suction up for pump application, we must keep the NPSHr at the duty point.
Usually, under this condition, it should be not over 5m; therefore, the pump head we suggested is
not over 34 m. The power offered is 200 KW.
Data：Q=750m3/h，H=34 m，n=650 rpm，NPSHr=5.0m，Power shaft N=138 KW
Estimated the loss of inlet pipe line and discharge pipe line and the pipe line before gathering, the
valves loss and the height difference before entering the booster pump should be totally 8 m. The

loss of 14” pipe direct pipe line is 34m.

L=538m

Excellence Pump Industry Co., Ltd.
January 21, 2008