FLSmidth is the world leader in the development and manufacturing of KREBS hydrocyclone separation equipment. KREBS products have been serving the industrial, water treatment, power utilities, automotive manufacturing, recycling, food & beverage, and pulp & paper industries along with mining industries since 1952. FLSmidth, designs, manufacturers and sells KREBS® Cyclones worldwide. Our knowledge and expertise in the use of hydrocyclones (cyclones) for the recovery and classification of solids, removal of oil from water is what makes us stand out in the mining and industrial separation technology industry. We work with an unrelenting focus on customer satisfaction and technical excellence. If you have an application that requires liquid/liquid separation, liquid/solid separation or in the case of recycling solid/solid separation we are the answer to your separation application.

Company details

5505 W. Gillette Road , Tucson , Arizona 85743 USA


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Business Type:
Industry Type:
Water Treatment
Market Focus:
Globally (various continents)
Year Founded:
Over 1000

This company also provides solutions for other industrial applications.
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Recognised globally for innovation, reliability and efficiency

All KREBS® products are designed and manufactured for the highest level of efficiency and quality, and are fit for purpose. By meeting customer needs, we have developed one of the most comprehensive product ranges in the industry, ensuring productivity through quality, reliability and compatibility.

We co-create

Customer intimacy is the core of our work ethic. The desire to understand and satisfy the needs of existing and potential customers is only possible because of the nature of the KREBS® team.

Most of our products and continuous improvements made were initiated from field experience. We actively review the performance in operation and make necessary modifications to ensure that our products have the lowest owning and operating costs in the industry.
KREBS® Slurry Pumps

The original millMAX pump revolutionised the slurry pump industry with the initial patented suction side anti-recirculation device. This feature gained rapid acceptance in the mining industry, enabling FLSmidth to expand the range of KREBS pumps to what it is today.

The range now encompasses metal, rubber and urethane-lined pumps, including high head, high efficiency, high pressure, vertical cantilever and recessed impeller options.

The nature of slurry pumping requires excellent availability of spare parts. To provide the support our customers need and expect, we manufacture in several locations and have warehousing in many countries and regions. The right part at the right time and at the right location is essential to our customers, and therefore, to us.

KREBS® Cyclones

Since 1952, our advanced hydrocyclone technology has evolved to the latest generation KREBS® gMAX cyclone with patented geometry enhancements, providing high throughput and industry-leading performance. The finer and sharper separations resulting from these improvements benefit processes from hard rock mining, coal, pulp & paper, chemicals, power (FGD), and much more.

As we constantly expand usage of advanced engineered wear materials, we continually extend the life of our cyclones, thus reducing maintenance requirements and lowering total cost of ownership. Combined with unique condition monitoring solutions, the performance of downstream processes is also enhanced, reducing unscheduled downtime and increasing plant production.

KREBS® Slurry Valves

Customers from around the world are familiar with our long history of manufacturing quality equipment and the KREBS® Technequip Valves are no exception to the rule.

Our KREBS® Technequip valves are designed as a premium heavy-duty slurry valve that can measure up to the most demanding applications. The full range of slurry valve styles and options we have available give us the flexibility to ensure you get a product that is well suited for your specific needs.

Benefits, delivered

We believe that providing our customers with solutions that generate sustainable productivity benefits requires more than just industry-leading products. It requires a team of passionate people dedicated to making your operations a success.

To fulfil our customers’ needs, we have a large team of experienced service engineers employed to constantly monitor performance and train the customers’ maintenance personnel. Thanks to our worldwide sales and service networks, KREBS® products are now accepted in all mining regions.

The KREBS brand was born out of a small company started in 1952. Brothers Dick and Kelly Krebs manufactured and sold their first cyclone in 1953 to an aggregate company in Orange, California. Over the next 12 years, the Krebs brothers took a revolutionary approach to the calculation, design, and production of cyclones, laying the foundation for the success of KREBS® cyclones.

By 1965, the company has become renowned for its products, not just in United States, but in other countries, as well. The cyclone models were sold to industrial, water treatment, mining and other industries.

Today, KREBS pumps, cyclones and valves are sold in almost every country on the globe. We stand by our products and we continue to design and innovate the cyclones that the Krebs boys started almost 70 years ago.


Richard Krebs and Kelly Krebs founded Krebs Engineers in 1952 and today FLSmidth Krebs is the world’s leading supplier of hydrocyclones, with offices in eight countries. Read how it all began.

Richard Krebs and Kelly Krebs founded Krebs Engineers

In 1950, Bob Clarkson and Kelly Krebs created a partnership called 'The Clarkson Company', for the sole purpose of manufacturing and selling Bob’s reagent feeder. In December of 1950, they purchased the rights to a cyclone like device called the Centriclone from an inventor named Norris Goodwin.

The Company was incorporated as Equipment Engineers in 1952, Dick Krebs, Kelly’s brother, was brought into the company later that year. In 1953, Equipment Engineers sold the rights to the Centriclone to Oliver Filters, a company that was later merged into The Dorr Company to become Dorr-Oliver. With the money from the sale of the Centriclone, the Company was able to develop the concept of the first heavy-duty mining cyclone, which had cast metal housings and replaceable
molded gum rubber liners.

Equipment Engineers sold its first commercial cyclone in 1953. It was a Model EE10-4 Cyclone sold to Sandy Muller Aggregate in Orange, California with serial no. 1000 (I guess they didn’t want Sandy Muller to feel like they were buying the first cyclone). In 1959, Kelly and Bob decided to split the Company into two separate companies.

Bob Clarkson took the valve and reagent feeder products and incorporated as The Clarkson Company.

Krebs Products in the Early Days

Richard and Kelly kept the cyclone line and the Company grew into what we know it as today, the world’s leading supplier of hydrocyclones, with offices in eight countries.

The Company changed its name from Equipment Engineers to Krebs Engineers in 1965 in honor of Dick and Kelly Krebs. Kelly died in 1959, and Dick died in 1962.

Dick and Kelly Krebs took a revolutionary approach to the calculation, design, and production of hydrocyclones and laid the base for the success of FLSmidth KREBS products today.

Quality Policy

FLSmidth is committed to providing the highest quality products and services that represent the greatest value to our customers and their continued success.  Quality is the responsibility of each employee and requires the pursuit of continuous improvement through the involvement of our employees, suppliers, and customers. All our KREBS products are designed and assembled with high quality standards.

“The success of a Quality program depends on the employees understanding that their daily actions contribute to the quality of our products, even if their job title doesn’t include the word 'Quality'.”

Safety is No Accident

'The success or failure of a Safety Program is based on a safety culture that is created, maintained, and continuously improved by all employees.'