Car Water Pump Guide: What are the Different Types of Water Pumps?

Water pumps are mechanical or electromechanical devices that use a pressure differential medium to transport water via pipes or hoses. Centrifugal pumps and positive displacement pumps are the two most prevalent types of pumps used to pump water. 

As the name indicates, Centrifugal pumps use centrifugal force to take water that enters an impeller and convert it to hydrodynamic energy using the rotational energy provided by rotating the impeller.

To circulate coolant through the many tubes and channels that make up the cooling system, an automotive water pump uses centrifugal force and impeller blades.

After circling around the engine, the coolant is hosed to the radiator, which is usually located towards the front of the vehicle. The radiator fins and air movement cools the heated coolant. It then pulls out of the radiator and returns to the water pump, from where the cycle starts all over again.

Basic Type of Automotive Water Pumps

automotive water pumps


The automobile water pump is a basic centrifugal pump powered by a belt linked to the engine’s crankshaft. When the engine is operating, the pump allows the flow of the fluid.

Water pumps are essential to run an automobile engine because it guarantees that coolant flows through the cylinder head, radiator, hoses, and cylinder block while maintaining the proper operating temperature. It is commonly powered by a belt from a crankshaft pulley or sprocket.

Different Types of Automotive Water Pumps

To understand water pumps in-depth, you must first understand how to distinguish between the many types available. On the one hand, water pumps for trucks/industrial vehicles and passenger cars may be distinguished, with each responding to the unique characteristics of each vehicle. At the same time, they may be divided into the following categories:

Mechanical Pumps for Water Flow

The coolant absorbs heat from the engine block and cylinder head and releases it to the ambient air through the radiator in mechanical water pumps.

Mechanical water pumps can be installed in the pump housing on the engine’s exterior or directly on the engine block, depending on the kind of construction. Such water pumps are often powered by V-belts, timing belts, or the engine directly.

Pumps that Change the Flow of Water

The fundamental feature of variable water pumps is that they allow the flow rate to be adjusted according to the engine’s demands using a vacuum process. That is, the water pump only activates the cooling system when it is required.

As a result, the engine’s efficiency improves, resulting in decreased fuel consumption and. This way, a considerable reduction in environment-polluting emissions is observed.

Such pumps mainly run on electricity; they aid in the reduction of emissions produced by contemporary motors. The ability to cool according to demands is enabled by a supply flow independent of the number of rotations of the motor. This minimises the energy required, lowering friction losses, fuel consumption, and pollution emissions.

Pumps for Agricultural Use

Agricultural water pumps are used in the agriculture sectors to power irrigation systems that supply water to the roots of plants to help them grow. If there is a requirement to cleanse the water or add chemical fertilisers before applying it to the crop, groundwater or surface water may be piped to a holding facility such as a storage pond.

Pumps that Circulate the Water in a Boiler

Water pumps can also be used in the heating business. Boiler water circulation pumps are used to move hot water through a network of pipes and heat exchangers after it has been heated in a boiler (typically radiators or convectors). The heated water’s thermal energy is subsequently transferred to the radiator or convector, where convection currents heat the air in the room. 

The circulating pump is normally powered by electricity and regulated by a relay circuit that closes when a call for heat is made and opens when the room temperature reaches the predetermined point.

Pumps for Dewatering

automotive water pumps


Dewatering pumps are used in construction to remove ground or surface water that might be obstructing the capacity to dig the site, build a foundation, or pour concrete footings. These circumstances arise when there is a high water table in the region or when the geography causes water to settle naturally in a low location.


This article indeed provided you with a quick overview of some of the most popular types of water pumps and how they are used. This will guide you on everything about car water pumps. Above, we have told you about different types of water pumps you can use to wash cars, but keep in mind that automotive water pumps are the most important ones.

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