Sump Pump Float Switch
A sump pump float switch is a clever little device that is designed for use in
the basement of many homes. The sump pit is a container or basin that collects water entering the home in cases of
flooding while the float switch is responsible for triggering off a signal to the sump pump to start pumping water
away from the home.
How Sump Pump Float Switch Works
In areas where flooding is prevalent, the sump pump float switch has literally saved
millions of homes from extensive damage as a result of flooding. Once a certain level of water has been reached
inside the sump pump pit, the sump pump float switch alerts the sump pump to begin pumping
the water out and away from the property.
Due to the fact that the sump pump float switch does not last forever, when selecting a sump
pump you should ensure that the one you choose is capable of having the float switch replaced when it is needed.
This is important as the float switch is a critical component of the entire drainage system.
Types Of Sump Pump Float Switch You Can Use
There are three different types of sump pump float switch:
• Vertical action float
• Tethered float
• Diaphragm switch
The vertical action float is a 'middle of the road' sump pump float switch in that it works
better than the tethered float and will cost you lesser as compared to the diaphragm switch. The vertical action
float comes with a ball that floats on the surface of the water and rises as the water level does. When the water
level in the sump pit has reached a certain point, the sump pump float switch is activated and it will automatically set the sump pump working.
The tethered float, which is suspended from the pump, is very commonly used but is also
considered to be the most problematic in the range of sump pump float switch. It is usually found in pedestal sump
pumps. In the event of flood and water level rises, the float also rises thereby activating the float switch.
However a commonly encountered issue with this type of float switch is that dirt can get trapped in and around the
float resulting in it sinking in the water. When such a thing happens the sump pump float switch will not be able
to get activated.
Lastly there is the diaphragm switch which unlike the other two does not have a float. The sump
pump is placed into the water and has sensitivity to water pressure. As the water level continue to move upwards
the water pressure rises and this will alert the diaphragm switch to curve or hollow inwards thus activating the
sump pump float switch to start working.