A submersible pump is a pump which must be fully submerged to pump fluid. These pumps are often found in deep wells and boreholes as they are ideal for pumping water from deep below ground. They do not usually suffer from cavitation (the physical limit on sucking water from the surface) as surface pumps do, which means that submersible pumps have revolutionized deep water lifting by pushing water up to the surface.

Why it is required to use a submersible pump?

One of the simplest technical reasons for using a submersible pump is to lift water that is deeper than the suction limit for surface pumps. This is the depth beyond which no surface pump can lift water using suction. This occurs at about 7m (or 20 feet) at sea level and is less for sites at elevation.

Many water sources are at greater depths than the suction limit and therefore require a submersible pump to access water.

What are the advantages of using submersible pumps?

A submersible pump will never have to be primed as it is always submergedThey do not risk drawing in air through small leaks in the pipes or joints which can cause surface-pumps to be very inefficientNo air, water and noise pollution. Submersible pumps are quiet as they are underground and also cannot contaminate your water source as they require no greasing or oiling or refuellingSubmersible pumps are versatile in their uses. You can use them for pumping water for agricultural irrigation domestic water lifting, community water access and much more.