Parker

Parker Hannifin Corporation, founded in 1917 and headquartered in Cleveland, Ohio, is the largest motion and control technologies company in the world, with a breadth of product that no competitor matches. Through decades of acquisitions — including Denison, Commercial Intertech, Legris and CLARCOR — Parker has assembled catalog coverage across hydraulic pumps and valves, cylinders, accumulators, filtration, pneumatic actuators and valves, sealing and shielding, fluid connectors, aerospace components and electromechanical drives. For valve and pump engineers, Parker matters on both the actuation and the fluid side: hydraulic power units and servo valves drive high-force valve automation in pipeline and subsea applications, its pneumatic brands supply the pilot layer for actuator packages, and its filtration and sealing divisions protect the pumps and valves downstream. The company's Hydraulics Group operates manufacturing across North America, Europe and Asia, and its distribution network — among the deepest in industrial components — makes even obscure part numbers available in days. Parker's engineering literature on fluid power sizing and filtration cleanliness is a standard reference, and its scale gives it staying power through commodity cycles that smaller fluid power firms do not survive.