Which type of pump is designed to handle rocks and other solids?

In order to reduce the operation and maintenance which of the following characteristics of a pump should be considered?

What are the pumps with one or more impellers called?

Why are booster pumps used?

End suction pumps are the common type of _____ pumps.

Lamp hole is an opening or hole constructed in a sewer for purpose of lowering a lamp inside it.

Which type of pump should be used in order to handle low viscosity fluids?

Which is the part of the pump which prevents the flow of water from the volume to enter back to the impeller?