Determining of Pump Speed.
There should be only enough pumps on line (operating) at any station to
produce the required pressure (FTH) and throughput (GPM or BPH).
regulate pressure by adjusting pump speeds between minimum and maximum
speeds permitted. Determining pump speeds is largely based on experience.
Pump speeds are highly variable, influenced by line diameter, number of
pumps on line, specific gravity and viscosity of products, and other
hydraulic characteristics of the particular pipeline and pump station in
operation. Pump station pump speeds may also be determined using Figure 6.
These graphs are for three or four pumps in series.
Operating characteristics of a standard pump station for 6-inch