Vertical immersion pumps are vertically immersed centrifugal pumps for the handling of water and other thin liquids. They go by a number of names including vertical column and shaft pumps, as their design would suggest. Whereas with a submersible pump the whole assembly is immersed into the fluid, with a vertical cantilever pump the electric motor is located above the fluid and is connected via a long vertical shaft to the pump impellers which are immersed into the fluid. Vertically immersed sump pumps are the ideal solution when needing to pump from an underground well, a reservoir or a river, or in applications where the liquid is a high temperature that would not enable a traditional submersible pump to be used.
Applications in which vertical shaft pumps are used include:
Potable water supply
Plant make-up water
Vertically immersed pumps can cover a wide range of flow rates and heads making it a versatile type of transfer pump, and used when the flow rate exceeds the capabilities of a jet pump. Another benefit of the centrifugal vertical column pump is that its construction is space saving.