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Vertical centrifugal pumps are simply designed machines

Vertical centrifugal pumps are simply designed machines. A casing called a volute contains a horizontal impeller mounted perpendicularly on an upright rotating shaft. The electric motor uses its mechanical energy to turn the impeller whose blades impart kinetic energy to the liquid as it begins to rotate up the casing. Momentum and pressure carry the liquid (most commonly water) through the expanding volute until it exits through a discharge opening, sometimes at high velocities. Vertical pumps are located underground near the source of liquid which they move up to the surface. They are usually electric because a gas tank would be impractical to store and fill. The power cords are kept in a durable protective casing to prevent any leaks or damage. One example of a vertical pump is an axial flow pump whose impeller is actually a kind of propeller that lifts the liquid in a direction parallel to the pump shaft instead of pushing it in a perpendicular direction like horizontal centrifugal pumps would. Vertical pumps are generally designed in a close-coupled arrangement where the motor and the pump are held in the same slim enclosure that can be lowered into a deep well hole. Another technique is to have the motor at ground level and install the pump underground.
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