Donaldson buys aerospace supplier Western Filter

Donaldson Co. has acquired filter maker Western Filter Corp., expanding the company''s defense and aerospace businesses, according to the Associated Press. Filtration systems maker Donaldson did not disclose financial terms of the deal. Western Filter, based in Valencia, California, designs and manufactures filters for hydraulic oil, fuel, lube oil, and coolant systems used in commercial and military aircraft and helicopters, military ground vehicles, and naval shipboard systems. Western Filter expects its 2008 sales to be approximately $28 million. For the 12 months ended July 31, Donaldson had revenue of $2.23 billion.