An electrical device called a centrifugal pump that uses an impeller and an agitator to produce fuel pressure before starting an engine.
In industrial, agricultural, and home applications, centrifugal pumps are frequently used to pump water, solvents, organics, oils, acids, bases, and any "thin" liquids. In reality, there is a centrifugal pump design that may be used in almost any situation where low viscosity fluids are present.
Positive displacement pumps drive fluid out of the cavity using suction after drawing the fluid into the cavity or displace the fluid. The fluid is drawn into centrifugal or aerodynamic pumps by a rotating impeller, which also accelerates the fluid's exit from the pump's output point.
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