Denison Hydraulics Pumps, Motors & Valves

Denison Hydraulics, founded in 1900 and headquartered in Marysville, Ohio, builds industrial hydraulic fluid power systems: variable and fixed displacement piston pumps, vane pumps, radial piston motors, and directional, pressure, and proportional valves. Parker Hannifin acquired Denison in 2003, and the Denison product lines remain active and supported under Parker ownership. Northern Hydraulics supplies and cross-references Denison Hydraulics components for industrial hydraulic applications, matching both current models and discontinued part numbers to available equivalents.

Denison Hydraulics Product Lines & Series

Denison’s catalog spans several documented pump and motor families. The Gold Cup Series covers hydrostatic transmission pumps rated to 6000 psi, while the World Cup Series (P6W, P7W, P8W) and Premier Series (P09C, P140C) cover axial piston pumps reaching 6000–7250 psi. The PV/PVT variable displacement piston pump line spans the PV6, PV10, PV15, PV20, and PV29 frame sizes.

On the vane side, the T Series — T6, T7, and T67, with variants including T6C, T6D, T6E, T7B, T7D, and T7E — covers fixed and variable displacement vane pumps. Radial piston motors run under the Calzoni brand (MR, MRE, MRD, MRDE, MRV, MRVE, MRT, MRTE, MRTF), and proportional directional and pressure valves include the 4VP01, P2, and 4DP01 designations. We can identify the correct series and frame size from a nameplate, datasheet, or existing part number.

Cross-Referencing Denison Hydraulics Parts

Many Denison pump, motor, and valve numbers — current and long-discontinued — interchange with available replacement and equivalent parts. Under Parker ownership, Parker ParFit replacement filter elements serve as equivalent interchange for original Denison filter cartridges, and aftermarket suppliers maintain cross-reference data plus remanufactured T Series vane pumps, PV piston pumps, Gold Cup units, and Calzoni radial motors. If a T6C cartridge kit, a PV20 rotating group, or a discontinued World Cup pump is no longer cataloged under its original number, we can match it to a current equivalent.

Send us the Denison part number or nameplate data and we will return a cross-reference and equivalent options. Request a cross-reference quote for any obsolete or hard-to-source Denison Hydraulics part.