Founded in 1930 by John Markey as Aro Equipment Corporation; located in Bryan, OH.l Early products included lubrication equipment hand tools, and couplers. In 1960, the common stock was admitted for public trading on the New York Stock Exchange. Valves, cylinders, and Air system components product lines were added in the 1960s (with manufacturing located in Angola, IN). The name of the company was shortened to the Aro Corporation in 1961. In the early 1980s, Aro introduced its successful line of air-operated diaphragm pumps. Ingersoll-Rand purchased Aro in 1990 and changed the name to Ingersoll-Rand Fluid Products. In the late 1990s, Ingersoll-Rand added Waterjet and Johnstone companies to the Fluid Products Division (Ingersoll-Rand acquired Waterjet in the late 1980s) Today, Ingersoll-Rand Fluid Products is known simply as I-R ARO, and I-R Johnstone.
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