Submersible pumps are essential for various tasks, from household drainage to industrial operations. This blog aims to explain how they work, their key components, and their advantages and disadvantages. Whether you’re a homeowner or an industry professional, this guide provides comprehensive insights into effectively selecting and using submersible pumps.


What is a Submersible Pump?

A submersible pump is a specialized pumping device designed to operate fully submerged in liquids, often for the purpose of drainage, sewage treatment, or irrigation. Unlike traditional above-ground pumps, submersible pumps are completely sealed to prevent moisture or liquid from entering the motor. This design makes them particularly well-suited for tasks involving deep wells, sump pits, or underwater operations like pumping out a flooded basement.

The pump typically consists of a motor, an impeller, and a system of seals and gaskets, all encased in a robust, watertight housing. The motor drives the impeller, pushing the liquid through a pipe or hose and moving it from one location to another.


Key Components of a Submersible Pump

Understanding the key components of a submersible pump is crucial for its effective operation and durability. The motor is the heart of the pump, providing the necessary force to drive the impeller. The impeller, in turn, is responsible for pushing the liquid through the pump. The motor drives the impeller to move liquid, both protected by a watertight casing. Seal chambers and gaskets ensure a watertight seal, while specialized electrical cables connect the motor to a power source. The discharge head directs liquid flow, and all components work cohesively for optimal performance.


The Science Behind Submersible Pump Functionality

The science behind submersible pumps revolves around centrifugal force–a rotational force generated by the pump’s impeller, which spins rapidly when powered by the motor. This creates a low-pressure zone, drawing liquid in and accelerating it outward. Through volutes or diffusers, kinetic energy turns into pressure, pushing the liquid into a drainage system. This efficient energy conversion makes these pumps highly versatile for tasks like drainage or irrigation.


Types of Submersible Pumps

There are various types of submersible pumps, each designed for specific applications and conditions. Understanding these types can help you choose the right pump for your needs:

  • Sump Pumps: Primarily used for draining accumulated water from sump pits, commonly found in basements. These are essential for flood prevention in residential buildings.
  • Sewage Pumps: Engineered to handle and move sewage waste. They are often used in sewage treatment plants and septic systems.
  • Well Pumps: Designed to draw water from deep or shallow wells for residential or agricultural use. These can be further categorized into deep well and shallow well submersible pumps.
  • Grinder Pumps: Equipped with cutting blades that grind solid waste into slurry before pumping. These are typically used in municipal wastewater management.
  • Utility Pumps: These are general-purpose pumps suitable for various tasks, such as draining water heaters or emptying pools.
  • High-Head Pumps: Built to handle higher pressures and are commonly used in industrial settings for oil and gas extraction tasks.

how a submersible pump works
3 Advantages of a Submersible Pump

Submersible pumps offer several key advantages that set them apart from other types of pumps. Here are three notable benefits:

High Efficiency

One of the primary advantages of a submersible pump is its high efficiency. Because the pump is submerged in the liquid it’s pumping, it can operate without spending energy on suction. This results in higher hydraulic efficiency and reduced energy costs over time.


Submersible pumps are incredibly versatile and can be used in various applications—from draining floodwaters and sewage treatment to irrigation and well-water extraction. Their robust design allows them to handle different types of fluids, including those with solid particulates.

Durability and Low Maintenance

Built to be fully submerged, submersible pumps are designed with a hermetic seal and corrosion-resistant materials. This makes them durable and relatively low-maintenance, as they are less susceptible to wear and tear than above-ground pumps.


3 Disadvantages of a Submersible Pump

While submersible pumps offer several advantages, they also come with their own set of drawbacks. Understanding these disadvantages can help you make a more informed choice. Here are three key considerations:

Initial Cost

One of the most significant downsides of submersible pumps is the initial cost. High-quality models, especially those designed for industrial applications, can be expensive to purchase, install, and integrate into existing systems.

Complex Repairs

Due to the hermetically sealed design and intricate components, repairing a submersible pump can be complicated. Specialized skills and tools are often required for even minor fixes, which can be costly and time-consuming.

Limited Accessibility

Since these pumps are fully submerged in the liquid they are pumping, accessing them for maintenance or repair can be challenging. This can be particularly problematic in applications like deep-well pumping, where the pump is several feet below the surface.


Where to Get a Submersible Pump in PA, NY, and NJ

If you’re searching for a reliable source for submersible pumps in Pennsylvania, New York, or New Jersey, look no further than North End Electric. We specialize in commercial pump repair and maintenance services and are your one-stop solution for all your pumping needs. As a stocking dealer for Barmesa and other reputable brands like ABS, Homa, Chicago, Keen, Barnes, Gould, Hydromatic, and Flygt, you can be assured of quality and performance. Whether you need a new submersible pump or require expert repair services, North End Electric’s professional and knowledgeable team is here to help!



Understanding how submersible pumps work empowers you to make informed decisions for your specific needs. Despite some drawbacks like initial costs and complex repairs, their efficiency and versatility make them indispensable. North End Electric is your go-to source for top-quality pumps and expert services if you’re in the PA, NY, or NJ regions.