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Types of solar irrigation water pumps

2020-04-07


Many kinds of pumps are used in irrigation systems.


*Pumps that lift surface water and move it to a nearby treatment plant are called low-lift pumps: These pumps move large volumes of water at relatively low discharge pressures.


*Pumps that discharge treated water into arterial mains are called high-lift pumps. These pumps operate under higher pressures.


*Pumps that increase the pressure within the distribution system or raise water into an elevated storage tank are called booster pumps. These pumps lift water from underground and discharge it directly into a distribution system.


*Most water distribution pumps are of the centrifugal type, in which a rapidly rotating impeller adds energy to the water and raises the pressure inside the pump casing. The flow rate through a centrifugal pump depends on the pressure against which it operates. The higher the pressure, the lower the flow or discharge.


*Another kind of pump is the positive-displacement type. This pump delivers a fixed quantity of water with each cycle of a piston or rotor. The water is literally pushed or displaced from the pump casing. The flow capacity of a positive-displacement pump is unaffected by the pressure of the system in which it operates.


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