Denison

Denison is a prominent manufacturer of axial piston pumps, headquartered in Marysville, Ohio, United States. Founded in 1925, the company is officially registered as Denison Hydraulics Inc. It focuses on high-pressure hydraulic systems, fluid power, and advanced electronic controls. Its precision piston pumps are essential for military aerospace, marine engineering, heavy industrial machinery, and mobile construction worldwide. Following its founding, the firm was acquired by Abex in 1968 and later by Parker Hannifin in 2004.