Hot on the heels of its recent acquisition of Commercial Intertech, Parker Hannifin has announced that it is buying Gresen Hydraulic from the Dana Corporation for an undisclosed sum. US-based Gresen makes hydraulic pumps, motors, cylinders, valves, filters and controls for use in vehicles. It employs nearly 1,000 people and had sales last year of $128m. One of its attractions for Parker is that it has an operation in Brazil and Parker wants to boost its presence in Latin America.