Efficient dirty water management contributes to the functionality and safety of any industrial, commercial, or residential space. Choosing a suitable submersible pump can make the difference between a reliable drainage system and recurring evacuation problems.
From this article you can learn about the main selection criteria and types of pumps available so that you can make an informed decision, optimizing both performance and operating costs.
What is a submersible pump and how does it work?
The submersible pump works on the basis of a sealed electric motor which drives a propeller (rotor) or a system of blades, creating a water flow and generating pressure to evacuate it through the pipe. The operating process includes the following steps:
Power supply – the electric motor receives power from the electrical network (single-phase or three-phase).
Rotor drive – the rotor generates a partial vacuum that draws water into the pump body.
Fluid displacement – the water is pushed towards the outlet due to centrifugal force (in the case of centrifugal pumps) or volumetric displacement (in the case of chopper or vortex rotor pumps).
Water evacuation – the water is directed through the discharge pipe to the desired destination.
Types of submersible pumps Submersible pumps are classified according to the type of liquid they handle, the pumping mechanism and specific applications:
Submersible pumps for dirty water: suitable for drainage, evacuating water from basements, cellars, flooded yards.
Characteristics:
dirty water pumpcan handle small solid particles (e.g., sand, leaves);
has a robust construction, often made of cast iron or stainless steel;
are efficient for pumping water with impurities.
Examples: construction site drainage, rainwater management.
Submersible pumps for clean water: used for drinking water supply, irrigation, filling reservoirs.
Characteristics:
equipped with centrifugal rotors for constant pressure;
may have multiple rotor stages for high depths;
built from stainless steel or corrosion-resistant plastic.
Examples: pumps for deep wells, pumps for wells.
