Denison Hydraulics

At Yshydraulic, we provide high-quality Denison hydraulic pumps, motors, and valves, offering both new and remanufactured hydraulic units. Whether you’re searching for a replacement component or need professional hydraulic pump motor repair, our experienced team is ready to support your operations and keep your equipment running reliably.

Expert Hydraulic Repair and Supply

If your Denison hydraulics require repair, we can help. Simply contact us or send in your motor for expert hydraulic motor repair services. Our goal is simple: keeping Denison Hydraulics customers operational around the clock, with a full range of new, remanufactured, and repaired components.

History of Denison Hydraulics

Denison Hydraulics, based in the U.S., has a long-standing reputation for manufacturing industrial hydraulic systems, including pumps, motors, and valves. Originally founded in 1900 as the Cook Motor Company, it was later acquired by Bill Denison, who invented the first hydraulic machine—the hydraulic car pusher—in 1925. Over the decades, the company evolved into Denison Hydraulics, Inc., officially adopting the Denison Hydraulics name in 1992. It was later acquired by Parker Hannifin in 2003, with products marketed under Denison-Parker.

Denison Hydraulic Valves

Denison hydraulic valves are engineered in four primary types to meet diverse industrial requirements:

  • Directional Control Valves – Redirect the flow of hydraulic fluid.

  • Pressure Control Valves – Regulate system pressure.

  • Flow Control Valves – Match hydraulic fluid flow to system demands.

  • Hydraulic Check Valves – Ensure one-way fluid flow.

These valves are ideal for industries such as injection molding, metal forming, mobile machinery, and marine systems. Denison is among the few manufacturers producing flange-mounted pressure control valves, which can be directly attached to other hydraulic components, providing efficient and reliable operation.

We commonly stock Denison valves, both new and remanufactured, including models like R4, R5, and 2F1C.

Denison Hydraulic Piston Pumps and Motors

Denison produces a wide range of piston pumps with various sizes, pressures, and displacements. The Gold Cup Series stands out for its barrel-bearing design, delivering stable performance at high speeds and pressures—ideal for heavy-duty applications such as mining equipment and aircraft carrier steering systems. These pumps are available for both open and closed circuit systems and feature modular controls for flexible installation.

Denison also manufactures Calzoni radial piston motors, including fixed, dual, and variable displacement models, suitable for multiple applications.

Commonly stocked units, new or remanufactured, include:

Piston Pumps: PV6, PV10, PV15, PV20, PV29, PF series, PXX 1223
Hydraulic Motors: M1C, M1D, M1E, M4C, M4D, M4E, MF series, MV series, T series, P series, M11H, M11V, M14 series

Denison Hydraulic Vane Pumps

Denison vane pumps are recognized for durability and reliability. Their unique double-lip design ensures the vane contacts the cam ring at two points, improving performance and reducing susceptibility to contamination. Denison offers vane pumps in a wide range of sizes, pressures, and displacements to meet industrial demands.

Popular vane pump models include:

  • T6CR-T6CRM, T6D-T6DM-T6DP, T6DC-T6DCM-T6DCP

  • T6DCC-T6DCCM, T6DCCR, T6CC-T6CCM-T6CCP

  • T6C-T6CM, T6E-T6EM-T6EP, T6DR-T6DRM

Your Trusted Hydraulic Component Supplier

At Yshydraulic, we are dedicated to being your reliable hydraulic component supplier, providing high-quality Denison hydraulic pumps, motors, valves, and professional hydraulic pump motor repair services. Our new and remanufactured hydraulic units ensure maximum uptime, efficiency, and value for your operations.