Centrifugal Pumps

About Centrifugal Pumps


One of the most common pump types in Australia is the centrifugal pump. Centrifugal pumps are often chosen for their high flow rate capabilities, abrasive solution compatibility, mixing potential, relatively simple engineering, ease of use, cost-efficiency, wide capacity, head range, and smooth flow rates.

Centrifugal pumps move fluids with the use of centrifugal forces by the conversion of rotational kinetic energy to the hydro  dynamic energy of the fluid flow. The rotational energy of centrifugal pumps typically comes from an engine or electric motor. A centrifugal pump      has an impeller that rotates inside its pump casing, and its blades transmit kinetic energy to the fluids, increasing pressure and efficient flow rates.

Welcome to Hunter Pumps, Australia’s leading provider of high-quality centrifugal pumps. Our centrifugal pumps are designed to meet the diverse needs of various industries, delivering reliable and efficient performance. 

Discover why Hunter Pumps is your best choice for all your centrifugal pump requirements.

Applications of Hunter Pumps' Mechanical Diaphragm Pumps:

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Why Choose Hunter Pumps?

Hunter Pumps stands out as the preferred choice for centrifugal pumps due to the following reasons:

Extensive Range
Quality and Reliability
Expertise and Support
Custom Solutions
Commitment to Customer Satisfaction
Our Brands


At Hunter Pumps Industrial, we are proud to have worked with the following brands:
Learn more about Centrifugal Pumps

What is a Centrifugal Pump?

A centrifugal pump is a mechanical device that transports fluids by converting rotational energy from an engine or motor into kinetic energy. It achieves this using an impeller, which rotates and imparts velocity to the liquid. The fluid enters the pump and is subject to mechanical and rotational kinetic energy through fluid flow dynamics, enabling efficient fluid transfer. Centrifugal pumps are widely used across industries for their simplicity, efficiency, and versatility.

Advantages of Using Centrifugal Pumps

Centrifugal pumps offer numerous advantages, making them a preferred choice in many applications:

High Efficiency
Wide Range of Flow Rates
Low Maintenance

In summary, centrifugal pumps offer high efficiency, a wide range of flow rates, low maintenance requirements, versatility, and cost-effectiveness. Industries can benefit from improved performance, reduced energy consumption, and enhanced operational efficiency by utilising centrifugal pumps.

About Centrifugal Pumps

Applications of Centrifugal Pumps

Centrifugal pumps find applications in various industries and processes, serving multiple needs.

They are used in water infrastructure and sewage systems for water supply and distribution, ensuring efficient delivery in municipalities, residential buildings, and irrigation systems.

Centrifugal pumps transfer chemicals, acids, solvents, and corrosive fluids in chemical and petrochemical pumping.

These pumps contribute to cooling, circulation, and pressure boosting in manufacturing and industrial processes.

Agriculture operators benefit from centrifugal pumps in irrigation, crop spraying, and livestock watering.

HVAC systems rely on these pumps for circulating coolants and heating fluids in heating, ventilation, and air conditioning applications.

Centrifugal pumps are vital in the food and beverage industry, facilitating liquid transfer, recirculation, precise ingredient handling, and cleaning.

They are also suitable for refrigeration, fire protection, plumbing, water pressure boosting, water supply and treatment, process industry, petroleum production, and general industry, ensuring smooth operations and meeting diverse requirements across multiple sectors.

Types of Centrifugal Pumps

Several types of centrifugal pumps are available, each designed for specific applications and requirements. These include:

Vertical Centrifugal Pumps

These pumps are designed with a vertical orientation and are suitable for applications where space is limited, or the pump needs to be submerged.

Horizontal Centrifugal Pumps

This type of pump has a horizontal orientation and is commonly used for general fluid transfer in various industries.

Self-priming Centrifugal Pumps

These pumps can prime themselves without external assistance, making them ideal for suction lift applications.

End-suction Centrifugal Pumps

With a single impeller, these pumps are widely used for general fluid transfer in different industrial settings.

Bare Shaft Centrifugal Pumps

This type of pump is designed without a motor and is often used in applications where the pump is directly coupled to an external power source.

Vortex Centrifugal Pumps

These pumps use a unique design that creates a vortex in the centrifugal pump impeller, making them suitable for handling fluids containing solids or abrasives.

Multi-stage Centrifugal Pumps

These pumps have multiple impellers arranged in series, enabling them to handle high-pressure applications effectively.

Single-stage Centrifugal Pumps

Designed with a single impeller, these pumps are commonly used for low to moderate-pressure applications.

Centrifugal Water Pumps

Commonly used for water-related applications, including water supply, irrigation, and water treatment.

Understanding the different types of centrifugal pumps allows you to select the most suitable pump for your specific application, ensuring efficient and reliable fluid transfer.

Choosing the Right Centrifugal Pump

When it comes to centrifugal pumps, selecting the right one for your specific application can be a complex task. Ensuring that the pump is well-matched to both the mechanical and hydraulic aspects of the system is critical for optimal performance. Failing to do so can result in a myriad of problems, ranging from inefficiency to mechanical failures. Here’s a closer look at what you need to consider:

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Hydraulic Factors
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System Design
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Flow Rate
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System Resistance
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Duty Point
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Net Positive Suction Head (NPSH) Made Available
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Suction Lift
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Matching Requirements to the Right Pump
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Hydraulic Selection
Practical Considerations

Centrifugal vs. Positive Displacement Pumps:

Comparative Table

Understanding the differences between Centrifugal Pumps and Positive Displacement Pumps is crucial when selecting the right pump for your application. These pumps have unique characteristics in terms of mechanism, flow rate, pressure handling, and viscosity suitability.

Here’s a comparative table to help you make an informed decision.

Feature Centrifugal Pumps Positive Displacement Pumps
Mechanism Spinning impeller Cavity and mechanical force
Flow Rate Varies with pressure Constant
Pressure Low to moderate High
Viscosity Low viscosity fluids High viscosity fluids
Shear-Sensitive Fluids Poor handling Good handling
Priming Required Yes No
Applications Water supply, petrochemicals Sewage, oil processing
Efficiency High at high flow rates High at low flow rates

While centrifugal pumps are more suited for applications demanding high flow rates of low viscosity fluids, positive displacement pumps shine in scenarios requiring steady flow rates of high viscosity fluids.

Ask our team of specialists

Get in touch with Hunter Pumps to schedule your free pump assessment

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Frequently Asked Questions (FAQs)

A centrifugal pump converts rotational energy into kinetic energy to transfer fluids. The process involves the following steps:

  1. The pump's impeller rotates, imparting velocity to the fluid.
  2. The fluid enters the pump through the inlet and moves towards the impeller.
  3. The impeller's rotation accelerates the fluid, increasing kinetic energy.
  4. The fluid is directed towards the pump outlet, which exits under pressure.

Centrifugal pumps are characterised by several key features, including:

Impeller: The rotating component that imparts velocity to the fluid.

Pump Casing: The stationary enclosure that surrounds the impeller and guides the fluid flow.

Inlet and Outlet: The points where the fluid enters and exits the pump.

Motor or Engine: Provides the rotational energy required for pump operation.

Shaft and Bearings: Transmit rotational energy and support the impeller.

Centrifugal pumps have extensive applications across industries, including:

  1. Water supply and distribution systems
  2. Chemical processing and transfer
  3. Manufacturing and industrial processes
  4. Agriculture and irrigation
  5. Heating, ventilation, and air conditioning (HVAC) systems
  6. Food & Beverage Applications

Centrifugal force is the apparent outward force that acts on a mass when it is rotated around an axis. This force results from the mass's inertia as it moves in a circular path. It is directed away from the axis of rotation and is felt most strongly when an object is moving quickly along the curve.

A submersible pump is designed to be installed and operated underwater and is often used for applications such as draining a sump or pumping water from a well. In contrast, a centrifugal pump is usually installed above ground and is not designed to be submerged. Centrifugal pumps use an impeller to move fluid by converting rotational energy to kinetic energy, whereas submersible pumps can be of various types, including centrifugal designs, adapted to work underwater. Both pumps serve the purpose of moving fluid but are suited for different environmental conditions and applications.