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The purpose of a centrifugal pump is to increase the pressure of a fluid by engaging the fluid with strong rotational kinetic energy. This simple device houses a stationary pump and a small impeller that is fixed to a rotating shaft. All of these parts are encased in a volute or casing.

As the shaft of the pump rotates, the impeller turns with it. The impeller’s motion transfers kinetic energy to whatever fluid is being used in the application. This interaction causes the fluid to work through to the tips of the impeller vanes. The volute grows as it extends and the speed of the fluid gradually reduces as the pressure increases. The fluid then exits the pump through an opening in the volute channels.

Most centrifugal pumps are built using cast iron or other metals like aluminum that can withstand harsh chemicals and conditions that would eventually destroy other materials. Centrifugal pumps are beneficial because they create a uniform flow and can be adapted to both solid and liquid mixes. However, a centrifugal pump cannot perform well under high pressures.

The pump might need to be primed and could even become air bound. When the pump is air bound, it means that there is too much air in the system to create a vacuum. When this happens, no water will be pulled into the pump. Read More…

Leading Manufacturers


Warminster, PA | 215-343-6000

SCC Pumps, Inc.

Arlington Heights, IL | 800-334-1199

Walrus America, Inc.

Houston, TX | 281-955-8035

Haight Pumps

Evansville, WI | 800-871-9250

A centrifugal pump can be used to transport liquids or gasses such as chemicals, corrosive materials, oil, resin, acid, bleach, and more. Trash pumps are special centrifugal units designed to pump out large volumes of water at a rapid pace. Rather than pump pure water, trash pumps are used to pump polluted sources like sewage, sludge, and waste water. These materials can be very thick, so the pump’s impeller is designed with deep veins and a large discharge to create the necessary kinetic energy.

A water pump is used for various water transfer applications. These pumps are versatile, lightweight, and sometimes high pressure if necessary. One type of water pump that many people may be familiar with is a sump pump. A sump pump is often used in residential settings to reduce flooding or water accumulation in a low-lying area. The pump may be combined with a pressure tank to that the water can be distributed away from its source.

The design of a centrifugal pump can be optimized to meet the needs of particular situations. For instance, axial flow pumps are built with a vertical shaft that has an impeller attached to it perpendicularly. The purpose of this is to push liquids upwards. A jet pump is a centrifugal pump that is aided by jets for maximum suction power. Submersible pumps are used underground in a place where water is almost always present.

These pumps do not need to remove air from their suction line in order to provide continuous flow. Submersible pumps are designed as compact units where the motor and pump are close together so that the entire device can be lowered into a well hole. These pumps are typically powered by a nearby electrical source.

With advances in technology, centrifugal pumps continue to become more powerful and are capable of lifting even heavy fluids for applications in some industries. Jet pumps in particular are becoming less popular as submersible pumps become more powerful. The self-priming pump models that are now on the market make startup time much faster. For applications where easy maintenance, sanitation, and gentle handling are all important, hygienic centrifugal pumps are now being used.

An industrial pump can have a head capacity of over 500 feet and an impressive flow rate of 40,000 gallons per minute. Further advances in filter design have greatly reduced the occurrences of clogging when working with thick liquids. The materials used to construct a centrifugal pump play an important role in its overall efficiency. More and more manufacturers now use fluorocarbons and thermoplastics for seals and other parts, and they continue to use strong metals with high levels of corrosion resistance.

Centrifugal Pump Informational Video