Monoblock Pump Vs Submersible Pump [17 Points]

Now a days water as a resource is becoming precious like gold day by day in urban as well in the villages. Apart from being used in household for drinking and cooking, water has a vast area of application in industries, agriculture of all types.  Most of water consumption in rural areas and even in cities is dependent on groundwater. Therefore demand of water pumps throughout the year and across various geographies in India is gradually increasing day by day.

Let’s have a look at the difference between monoblock pump vs submersible pump before selecting any water pumps for domestic use or any uses. While selecting a water pump, you should have the essential acknowledge the purpose for which you want to buy it. Except comparison between submersible pump and monoblock pump the Flow rate, inlet size, motor, maximum head and pressure and vertical suction lift are some key parameters you should look for while purchasing water pumps.

Monoblock Pump

Monoblock are surface pumps and the water is pulled through the suction pipe to the eye of the impeller and throws out from outlet. The water enters through the impeller eye, electric energy driven shaft to gains kinetic energy, and gets pushed out to the volute by centrifugal force. The volute, a chamber with a gradually increasing area, converts the kinetic energy of water to pressure (head) and the pressured water is delivered to the point of use. 

It is designed as horizontal pump having motor, shaft and impeller. It is compact and carries easily, install. Monoblock pump can suck water from certain distance and throw to deserved height. Normally monoblock pump is used in home, garden, limited commercial purpose. It is very popular due its simplicity, portability, and low price and easy to install.

Submersible Pump

A submersible pump is a device which has a hermetically sealed motor assembled with the pump body and available in horizontal and vertical design. The whole assembly is submerged in the water to be pumped as the name suggest. It is divided into openwell submersible pump and borewell submersible pump. The openwell submersible pump is one kind of monoblock pump and the borewell submersible pumps are multistage centrifugal pumps operating in a vertical position.

Water accelerated by the impeller and lose their kinetic energy in the diffuser, thus a conversion of kinetic to pressure energy happened. The main advantage of this type of pump is that a problem associated with a high elevation difference between the pump and the fluid surface and it prevents pump cavitation. The submersible pumps push water to the surface, rather than create a vacuum and rely upon atmospheric pressure. Because of its working efficiency, it’s mainly use in industry, building, agriculture etc.

Monoblock Pump Vs Submersible Pump

FeatureMonoblock PumpSubmersible Pump
Working PrincipleConverting electric energy to kinetic energy by rotating single impellerConverting electric energy to kinetic energy by rotating multiple impeller
RequiredNeed of sufficient source of water and easy access of water.Don’t required sufficient source of water. It can pushed water from deep level.
DesignHorizontalHorizontal / Vertical
SpaceNeed extra space to installNo extra space. It’s placed under water
PrimingRequired primingDue to submersed under water not required priming
CavitationMay occurredNo cavitation
Flow rateLessHigh
Power consumptionLessAlmost same
Over HeatMay over heat in continuous runningIt’s not over heat in continuous running, because it’s submersed under water.
NoiseHighAlmost noiseless
PortabilityCan carry anywhereExcept openwell submersible pump, borewell submersible pump not able to carry.
MaintenanceHigh. It need to be repair more compare to submersible pump.It’s last long time without repairing, but if any problem occurred, then you have to expense more money. Because it is kept inside borewell.
DurabilityLess durableHighly durable and last long
InstallationInstalled above floorInstalled under water or borewell.
ApplicationUsed in home, garden, small commercial purposeUsed in building, hotel, agriculture etc.

Read this article also ” Monoblock Pump vs Centrifugal Pump


Monoblock pump and submersible pump both are identical and both are having own characteristics. In this article we have discussed in details about monoblock pump vs submersible pump. This article may help you to decide among them. There are many articles on water pump in our website you may go through.


Q- Monoblock vs submersible pump

A- Read the above article.

Q- What is the difference between monoblock pump and submersible pump?

A-Read the above article

Q- Submersible pump vs normal pump?

A- Read the above article.

Q-Is submersible pump better?

A-Jet pumps and monoblock pumps pull water, while submersible pumps work by pushing water upward. Submersible pumps are often more efficient for deep wells since pushing water requires less energy. Even it is durable, noiseless and low maintenance.

Q-Coupled pump vs monoblock pump?

A- Pump coupling is the element used to connect the drive shaft of the motor to the rotating pump shaft. It’s enable the motor to efficiently transmit power to the pump. Hence a pump is close coupled and the motor is directly mounted to the pump on a single shaft, as separate coupling is not required. In my usage a close coupled is no coupling, common shaft, pump bolted straight to the motor. Mono-block has the motor housing and pump housing on the same piece of metal hence it’s cannot be removed.

What is the difference between self-priming and non self-priming pumps?

The significant difference is how it treats air. When someone buys a non-self-priming pump, it is very difficult to pull water once the pump dries. You need fill water manually in pump hose to pressurize the pump. Instead, the self-primping pump work effectively when it dries. No need to fill water to pressurized the pump. So choose a self-priming pump wise decision to come out from uncertain problem.

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