DOWNERS GROVE, Ill. (Feb. 13, 2012) – Pump Solutions Group (PSG®), a business unit within the Engineered Systems segment of Dover Corporation, announced today it has signed a definitive agreement to acquire the Maag Group headquartered in Zurich, Switzerland.  The acquisition includes Maag® Pump Systems, Automatik® Pelletizing Systems and Maag® Filtration Systems.