Displacement Pump
These pumps move water by displacement. Examples
are piston pumps, diaphragm pumps, roller-tubes, and rotary pumps. Piston
Displacement Pumps are pumps you operate by moving a long lever up and down.
Usage for a displacement pump would be when you need to move very thick
liquids, create very precise flow volumes, or create extremely high pressures.
A fertilizer injector is the most common irrigation use for a displacement
pump.
Submersible Pump
Pumps that are completely installed under water.
These are a single unit with a pump and electric motor. The main purpose is to
be installed in a well but they can be installed on the bottom of a lake or
stream if placed on their side or mounted to a pier. No need to prime these
pumps due to them already being under water. If they aren't installed in a well
they need to be placed into a special pump and this may be necessary when
placed into a well. The sleeve helps to keep the motor cool by moving the water
flow over the motor. The pump would burn up without the sleeve. Since the power
cord runs down to the pump it is extremely important to take safety precautions
to prevent damage. Boats, alligators, and debris are common examples of
possible hazards to your power cord.
Turbines And Jet Pumps
A centrifugal pump that is mounted underwater
and attached by a shaft to a motor mounted above ground. The motor turns the
shaft which causes the impeller to turn inside the pump. Jet Pumps are similar
to the Turbines except they help lift the water by directing the down the
intake. Turbine pumps are used a lot in irrigation because they are efficient
and able to generate high water pressure.
Booster Pump
Booster pumps are different from other pumps
because they don't take water from a non-pressurized source and move it to
another location instead they are used to increase the water pressure of water
that is already on its way somewhere. These pumps are used to boost the water
pressure.
Floating Pump
Submersible or Floating pump that is attached to
the bottom of a float. The pump is underneath the float which is anchored to a
river, pond, or lake. These pumps are usually more energy efficient and easier
to install than the other submersible pumps in a pond or lake.
Jet Pump
A jet pump is a self contained unit. Most
commonly used as a deep well pump, this pump is simply dropped into a well with
just a power cord and a water line. Because this well is deep beneath the water
it is almost silent.
Centrifugal Pump
A vast majority of all irrigation pumps fall
into this category. This particular pump uses an impeller (rotating part that
transmits motion in a device) which spins the water rapidly in a casing,
chamber, or housing.The spinningaction is known as centrifugal force.This force
isresponsible for moving the water through the pump. These pumps may have
several stages which the water passes through the different stages increasing
pressure. These pumps must have water in the intake pipe and the casing before
starting the pump. It is imperative that youprime these pumps before the first
use. This is done by filling the case with water, then quickly turning the pump
on. This pump sucks water not air so you must have water in the pump to enable
the water to move into the pump. You don't have to prime the pump before every
usage because it has a small valve that holds the water.
End Suction Centrifugal
pumps are different because they are designed to force water out verses forcing
water in. the pumps work the best when the water level is higher than the pump
verses lower. These pumps perform the best at pushing
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