Donaldson Filtration Systems (Pty) Ltd

INTERNATIONAL PRESS RELEASE
January 2009

DONALDSON ENGINE PRODUCTS CELEBRATES 15 YEARS OF ULTRA-WEB NANOFIBER FILTRATION TECHNOLOGY

MINNEAPOLIS, MN – January 13, 2009 – Donaldson Company (NYSE:DCI), a leading, worldwide manufacturer of filtration systems and parts, is pleased to recognize a 15-year milestone for the introduction of Donaldson Ultra-Web® Nanofiber Filtration Technology into its Engine Products. Launched in the Engine Aftermarket in December 1993, Ultra-Web Technology revolutionized air filtration for on- and off-road vehicles and equipment by providing high efficiency filtration and extended filter life while reducing operator maintenance costs.

Donaldson Ultra-Web Technology causes submicron particles to load on the media surface rather than disperse throughout the depth of the filter. The smaller, interfiber spaces of Ultra-Web provide higher efficiency and capture more contaminants.

"Donaldson has a long history of developing state-of-the-art filtration technology," said Bill Cook, Chairman, President and CEO. "Our Ultra-Web filtration technology – first introduced 26 years ago for our industrial filtration markets – is an example of our commitment to developing filtration products that satisfy our Customers' needs. Our combination of Ultra-Web with other Donaldson technologies allows us to provide industry leading, highly effective filtration solutions that lower operating costs for our Customers."

Throughout the years Donaldson has continued to improve the durability and performance of Ultra-Web Technology, targeting diesel engine applications operating in increased ranges of temperatures and humidity levels. Backed by over 80 issued and pending patents, Ultra-Web is the foundation of many other Donaldson filtration technologies, including:
 

Donaldson Endurance™ Air Filters: In highway applications, where the contaminant is primarily submicron in size, Donaldson Endurance air filters will go twice the distance as conventional cellulose filters.

High-Efficiency SRG and SSG Air Filters for Mining: In mining haul truck applications, where there is a high concentration of both dust and soot contaminant, Donaldson manufactures air filters to extend maintenance cycles. 

PowerCore® and PowerCore® G2 Filtration Technologies: Using patented Ultra-Web technology, PowerCore filters are up to 10 times more efficient and are more compact than standard, pleated cellulose filters. 

·Pulse Jet Air Cleaners (PJAC™): PJAC is the self-cleaning filtration system for the M1 Abrams tank, which operates in the most critical and demanding environmental conditions.
·Ultra-Aire™ Cabin Ventilation Filters

For more information contact Donaldson Filtration Systems (Pty) Ltd
Tel: 011 9976000 or Fax: 011 6080021
Email: marketing@emea.donaldson.com
Website: www.donaldson.co.za