DONALDSON DELIVERS NEXT-GENERATION FILTRATION SOLUTION FOR U.S. ARMY BLACK HAWK ENGINES

ST. LOUIS, MO – APRIL 9, 2013 – Donaldson Aerospace & Defense, a division of Donaldson Company, Inc. (NYSE: DCI), in March began delivering the next generation of filtration technology to protect engines on the U.S. Army’s H-60 BLACK HAWK helicopter fleet from contamination, performance degradation and failure.

The next-generation technology replaces woven oil-coated filtration media with non-woven dry media using Donaldson’s proprietary nano-fiber technology to provide 99 percent particle separation for the BLACK HAWK’s Inlet Barrier Filtration (IBF) systems. Donaldson developed the application in response to an Army request.

Dry media is easier to maintain than the oil-coated type and can be cleaned using basic techniques. This helps reduce maintenance and support requirements in the field. Donaldson is the first manufacturer to offer dry media filtration for helicopter engines.

Donaldson has delivered more than 600 IBF systems for Army BLACK HAWKs. Donaldson IBF systems are also standard on Army Special Operations Boeing MH/AH-6 Little Birds and Bell OH-58D/F Kiowa Warriors, and Donaldson recently delivered 75 additional OH-58 kits. The company also has been selected by Pratt & Whitney AeroPower to provide factory-installed filtration solutions for H-60 auxiliary power units.

“Since its formation 30 years ago this month, Army Aviation has consistently made the most of available technology to bring support and protection to the warfighter,” said Eric Erickson, who joined the company last year as General Manager of Donaldson Aerospace & Defense’s St. Louis division. “As the Army’s primary rotorcraft filtration supplier, Donaldson is proud to continue our tradition of helping Army aircrews perform those critical missions safely and reliably.”

Donaldson will be exhibiting its dry media kit, inlet barrier filtration systems and other advanced filtration solutions at Booth No.1644 during the Army Aviation Association of America’s Annual Professional Forum and Exposition April 10-13, 2013 in the Fort Worth Convention Center in Fort Worth, Texas.

To learn more about the Donaldson Aerospace & Defense group, visit www.donaldsonaerospace-defense.com.

About Donaldson's Aerospace & Defense Group

Donaldson Aerospace & Defense is a leading worldwide provider of filtration systems for the aerospace and defense industry. Our filtration solutions protect fixed wing aircraft, rotorcraft, military ground vehicles, electronic equipment, space vehicles, missiles, military shipboard systems, and amphibious vehicles. We are committed to advancing filtration technology, providing quality products and prompt customer service. Our group serves customers from sales, engineering, and manufacturing locations around the world. To learn more about the Donaldson Aerospace & Defense group, visit www.donaldsonaerospace-defense.com.

About Donaldson Company

Donaldson is a leading worldwide provider of filtration systems that improve people’s lives, enhance our Customers’ equipment performance, and protect our environment. We are a technology-driven Company committed to satisfying our Customers’ needs for filtration solutions through innovative research and development, application expertise, and global presence. Our over 12,800 employees contribute to the Company’s success by supporting our Customers at our more than 100 sales, manufacturing, and distribution locations around the world.