Parker Hannifin HPD (formerly Denison International) helps provide the power needed to scoop, lift, or move just about anything. Parker Hannifin company designs, manufactures, and services a slew of hydraulic components, from pumps to motors, manifolds, and valves, used in motion and control technologies and systems. Applications for its lineup include machine tools, material handling equipment, trucks, as well as construction, agricultural, and utility mobile machinery, and military equipment. Its customers include OEMs and their after-sales markets, such as Caterpillar, Volvo, GE, and the US Navy. Parker Hannifin purchased Denison in 2004, and integrated Parker Hannifin company into its Hydraulic Pump Division two years later.