HomeMechanical EngineeringWhat is Submersible Pump?...

What is Submersible Pump? Types and Applications

The submersible pump (or electric submersible pump (ESP)) is a fully sealed device with a motor and connected to a pump housing. The entire structure is immersed in the pumped liquid. It is a famous type of the centrifugal pump. The submersible sump pump is a pump that can be submerged and still achieve the desired efficiency. These pumps push water to the surface instead of pumping water from the ground, like jet pumps.

The underwater series pumps are vertically submerged and driven by electric motors. Connect the pump body and motor. To transport solid particles containing waste, sand, coal ash, tail, and groundwater or to obtain hot water for irrigation and municipal water use.

Working Principle of Submersible Pump

  1. The submersible pump uses as a multistage centrifugal pump that works vertically. Although its structure and operational characteristics have undergone constant changes in recent years, the basic operating principles have remained the same.
  2. The liquid produced by the huge centrifugal force generated by the rapid rotation of the impeller loses its power is transformed into pressure energy in the diffuser.
  3. The pump shaft links to the installation site via a mechanical connection under the pump. The well fluid enters the pump through the inlet plate and discharge by the pump outlet.
  4. Other components include radial bearings (bushing) distributed along the shaft to support the radial shaft support of the high-speed rotary pump.
  5. The optional thrust bearing supports some of the axial force produced in the pump. But most of the force absorbs by the thrust bearing in the shroud.

Types of Submersible pumps

1) Deep well pump

Deep well submersible pump is a widely used submersible pump. These pumps can also use for urban uses. The main body of these pumps connects with the motor to work underwater. It has simple repairs and impact plan rebuilding. When these pumps come into operation, they must be completely submerged in water.

2) Stainless Steel Pumps

Stainless steel pumps are better than cast iron pumps. They are fully coated in stainless steel and have a high resistance to acids. In these types of pumps, replace warm water or slightly acidic water often. A water source such as a well can protect by its unique jets and freshwater can flow frequently. The whole pump can immerse in water while working.

3) Bottom suction pump

Low-suction pumps are widely used in lakes, landmines, swimming pools, and rivers. These types of bombs use for emergency and expedition applications. These pumps have an easy than other types of pumps

4) Oil Filled Pumps

Submersible oil-filled pumps use oil immersion motors. These pumps are widely used in water extraction, agricultural irrigation, mountain irrigation, water supply, and industrial supply and drainage systems, mountain water supply, etc. The engine heater must be cooled to cool down. It can use in cold regions because the oil cannot freeze. They are very simple and easy to install and modify. These pumps can supply clean water such as that of a lake, swimming pool, or river.

Check out: What is a Reciprocating Pump? Working and Types

5) Water chiller Pump

These submersible pumps are commonly used in industry, agricultural land irrigation, residential water, and other agricultural businesses. They can also use underwater as a complete bomb. The engine, a floating water cooler, can be configured for underwater work

Applications of Submersible Pump

  • The pump shaft connects to the station via a mechanical link under the pump. Fluid from the well enters the pump through the inlet plate and is lifted by the pump stage.
  • Other components include radial bearings (bushings) distributed along the shaft to support the radial shaft support of the high-speed rotary pump.
  • The optional thrust bearing supports some of the axial force produced in the pump, but most of the force is absorbed by the thrust guard.
  • Efficiency – Compared to conventional pumps, submersible pumps are better because the liquid pump is close to the pump. So, it doesn’t work like normal bombs.
  • Sound level: underwater pumps rarely make less noise because they are immersed in water. The tank wall helps reduce the noise produced by the pump. Conventional pumps are located outside of wells or manifolds which can make a lot of noise.
  • Safety: Compared to other types of pumps, these pumps are quite safe because all potentially dangerous parts of the pump are submerged. It is usually covered and children are less likely to manipulate internal components and valves.


  1. These pumps are very efficient
  2. A lot of energy can be saved
  3. Handling of solids and liquids
  4. These pumps are quiet on the water
  5. These pumps are versatile
  6. There is no need to start
  7. Excellence
  8. Internal pressure is sufficient to pump internal water and no additional components are required
  9. These pumps have no cavitation problems.


  1. Over time, the pump seal breaks.
  2. Pay attention to the overheating of the pump motor.
  3. Does not apply to all applications.
  4. These pumps are difficult to identify and damage such as cracks can be repaired.
  5. Expensive due to mechanical properties
  6. Since the submersible pump is sealed, the gasket will rust over time. Therefore, water can enter the engine and damage the equipment.
  7. Repair of complex systems
  8. Each use requires different types of bombs and one bomb is not enough for all purposes.
  9. If it is not fully submerged, extensive damage will occur.

Check out: Different Types of Positive Displacement Pumps? 

Most Popular

More from Author

What is a Crossflow Turbine? Components and Application

A crossflow turbine has multiple splits that are inconsistently and longitudinally...

What is a Vacuum Pump? Types and Applications

A vacuum pump is a device that extracts gas molecules from...

How does a Pelton Wheel Turbine work?

Pelton wheel turbine is a kind of tangential flow impulse turbine,...

What is a Rotary Compressor And How Does It Work?

A rotary compressor is a mechanical device used to continuously flow...

Read Now

What Is A Fuel Pump And How Does It Work?

A fuel pump is a mechanical or electrical device installed next to a car's engine. The fuel pump is responsible for pumping fuel from the fuel tank to the engine. Therefore, in vehicles or other vehicles equipped with internal combustion engines, the fuel pump is the main...

What is a Solar Water Pump, And How Does It Works?

A solar water pump is a pump that uses solar energy to operate. Compared to conventional water pumps, solar pumps are durable, easy to install, require minimal maintenance, and are very inexpensive. The useful life of the solar pumps is up to 20 years. But sometimes, it...

What is Reaction Turbine? Types, Pros and Cons

A reaction turbine is a type of turbine that can generate the torque based on pressure or mass of a liquid. The reaction action of a turbine force is described by Newton's third law of motion (the action of the force and the reaction force are equal...

What Is a Reciprocating Compressor? Pros & Cons

A compressor replaces a volumetric machine that uses a piston to compress the gas and deliver it at high pressure. Reciprocating compressor have a piston that moves downward, reducing the pressure in the cylinder and creating a vacuum. This pressure difference forces the intake chamber valve to...

What is a Reciprocating Pump? Working and Types

A reciprocating pump is a positive displacement pump in which a particular volume of liquid is collected in a closed volume and discharged using pressure for the required application. The reciprocating works on the principle of pushing the fluid through the piston, which rotates in a closed...

Different Types of Positive Displacement Pumps? 

The positive displacement pump (PD) transfers the fluid with the aid of repeatedly trapping a set quantity and robotically agitating it inside the device. The pumping movement is cyclical and can be pushed with the help of using pistons, diaphragms, or blades.  Types of Positive Displacement Pump There are...

What is a Centrifugal Pump? Components and Uses

A centrifugal pump is a mechanical device that uses centrifugal force acting on a liquid to convert mechanical energy into hydraulic energy. It is the most popular and widely used type of pump for bottom-to-top liquid transfer, finding applications in agriculture, municipal services, industry, power plants, petroleum,...

What is a Kaplan Turbine? Working and Components

A Kaplan turbine is a propeller turbine that is used in hydroelectric power plants. It is the most common and famous type of reaction turbine. Water enters and leaves the Kaplan turbine through the rotating shaft, which is known as axial flow. The impeller blades of these...

What is a Septic System? Types and Components

A septic system is an underground storage system used for household drainage that cannot enter the city drain system. The septic tanks are available in different compositions and sizes but serve the same purpose. The company that provides septic tank pumps must withhold wastewater and perform basic...