Sewage Pumps
Sewage pumps are only used for one thing, which is to move solids and liquids
from one location to another. Many sewage systems need pumps because it is not always feasible to allow gravity to
do the job of the sewage pump. In some cases, the plumbing can be located uphill from the septic tank or the city’s
sewage system, so gravity is used to move the liquids and solids from one location to the other.
Submersible Sewage Pumps
If you do end up needing to use sewage pumps because gravity just doesn’t work you will
want to get a submersible one because the pump is going to be inside fluids almost all the time. The reason for
this is because of where the sewage pumps are placed, which is inside the sewage basin. The sewage basin is going
to be the lowest point that needs to be drained, which includes the bottom of the septic tank.
Sewage pumps are placed at the lowest point of the area that needs to be drained, such as the
bottom of the septic tank, because their job is to drain as many solids and fluids out as possible. To help make
this job possible the intake for the pumps are located on the bottom of the unit or close to the bottom, which
ensures that the intake pump is located as close to the floor as possible. Even with the intake pump being
located so close to the ground, in sewage pumps this doesn’t ensure that everything is fully drained, which is
mainly due to the amount of room that is required to be between the floor and the pump itself. The only way that
you will be able to totally drain all of the fluids is to do it manually.
How Sewage Pumps Work
Most sewage pumps use a bulb that is attached to the side of the unit to tell the pump when to
turn on and off. How that works is, when the bulb reaches a certain height because of fluid and solids buildup, the
switch is triggered to turn the pump on. As the bulb falls because of the fluids and solids being drained it
reaches a predetermined point and shuts the pump off.
Sewage pumps mainly handle fluids, but they will need to handle solids at certain times. Each
pump is capable of handling different sizes in solids, so before purchasing a pump you will want to research this
factor. Majority of pumps can handle solids that are up to two inches around, which is acceptable for most
households. Commercial sewage pumps are usually able to handle larger solids, so that is another option
you can consider. Something else that you need to think about when purchasing your pump is the size of the pump.
How big the pump should be is going to depend on the amount of sewage, which is expressed in gallons per hour.
Most household pumps can handle 5,500 to 8,000 gallons per hour.
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