FROM:
The Carideo Group Inc.
1250 One Financial Plaza
120 South Sixth Street
Minneapolis, Minnesota 55415
FOR:
Donaldson Company, Inc.
P.O. Box 1299
Minneapolis, Minnesota 55440
(NYSE: DCI)

CONTACTS:
Jan W. Drymon
(612) 317-2881
E-mail: jan@carideogroup.com
Janice Kovala
(866) 484-8329
E-mail: jkovala@mail.donaldson.com

FOR IMMEDIATE RELEASE

DONALDSON RECEIVES 2006 GOLD ALLIANCE SUPPLIER AWARD FROM VULCAN MATERIAL COMPANY

MINNEAPOLIS, MN – May 10, 2007 – Donaldson Company (NYSE:DCI), a leading, worldwide manufacturer of filtration systems and parts, is pleased to announce the receipt of a 2006 Gold Award from Vulcan Materials Company. The award was accepted at Vulcan's 8th Annual Alliance Partner Awards banquet held in March 2007.Each year, Vulcan plant managers complete surveys ranking suppliers in the following areas: product, service, support, ease of transactions, value and overall performance.

To be considered for an award, suppliers must have a minimum of 25 ratings. This is Donaldson's second year receiving an Alliance Partner award. "We applaud Vulcan and the Vulcan Procurement Department for hosting these annual awards to further support their department mission of selecting suppliers who deliver superior products and services to their operations, resulting in long-term improvements to productivity and cost of operation," said Val Peterson, Director of Strategic Accounts, Donaldson Engine Aftermarket. "Our group feels privileged to receive this award -- It attests to our commitment to providing superior customer support and service."

About Donaldson

Donaldson is a leading worldwide provider of air and liquid filtration systems and replacement parts 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 diesel engine equipment and industrial filtration solutions through innovative research and development, superior technology and global presence. Our 12,000 employees contribute to the company's success by supporting our customers at more than 100 sales, manufacturing, and distribution locations around the world. Donaldson is a member of the S&P MidCap 400 Index, and Donaldson shares are traded on the NYSE under the symbol DCI. Additional company information is available at www.donaldson.com.

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