PV29-2R5D-C00 Denison Piston Pump 61.9cc 275bar

Product Overview

The PV29-2R5D-C00 is a Parker Hannifin Denison PV Series open-circuit swashplate-type axial piston variable displacement pump. The PV Series is widely used in power generation and industrial equipment, renowned for its superior quality and reliable performance. The series comprises five models—PV6, PV10, PV15, PV20, and PV29—with displacements of 14.4 cc/rev, 20.6 cc/rev, 34.2 cc/rev, 42.9 cc/rev, and 61.9 cc/rev respectively. All models are rated at 310 bar maximum working pressure except the PV29, which is rated at 275 bar.

The PV29-2R5D-C00 features pressure-compensated (constant pressure) variable control as its primary control function, with double-acting control, right-hand rotation (R) , single output shaft (1) , and pressure compensation control (D) . The C00 suffix denotes the standard SAE A mounting flange with keyway + stop configuration.

As a direct OEM-equivalent replacement solution for the Denison PV Series, this product offers complete in-situ interchangeability, strictly adhering to Denison’s original design specifications and mounting interface standards. Every unit undergoes 100% simulated duty-cycle testing, ensuring that key performance metrics—including volumetric efficiency, pressure-flow characteristics, and case drain flow at rated pressure and full displacement—meet or exceed original factory specifications.

The complete ordering code PV29-2R5D-C00 precisely defines every design detail: series designation (PV29), displacement rating (61.9 cc/rev), control configuration (2R5D—double-acting, right-hand rotation, single shaft, pressure-compensated control), and mounting configuration (C00).

Technical Specifications 

• Model Number: PV29-2R5D-C00

• Series: Parker Denison PV Series (Open Circuit)

• Pump Type: Swashplate Axial Piston Variable Displacement Pump

• Maximum Displacement: 61.9 cm³/rev

• Continuous Working Pressure: 241 bar (3500 psi)

• Intermittent Maximum Pressure: 276 bar (4000 psi)

• Rated Maximum Working Pressure: 275 bar

• Maximum Speed: 2400 RPM

• Control Type: Pressure-Compensated (Constant Pressure) Control

• Control Code (2R5D): Double-acting, Right-hand rotation (R), Single output shaft (1), Pressure compensation control (D)

• Mounting Configuration (C00): Standard SAE A mounting flange, keyway + stop

• Rotation Direction: Clockwise (Right-hand)

• Shaft Type: Single Output Shaft (SAE A Type)

• Compensator Response Time (Off-stroke): Approx. 50 ms

• Compensator Response Time (On-stroke): Approx. 120 ms

• Body Material: High-strength Cast Iron

• Hydraulic Fluid: Mineral Oil

• Operating Temperature Range: 30–90°C

• Nominal Pressure: 25 MPa

Key Technical Advantages

1. Pressure-Compensated (Constant Pressure) Variable Control
The PV29-2R5D-C00 is equipped with pressure-compensated variable control as standard, automatically adjusting the swashplate angle in response to system pressure changes to modulate output flow. When system pressure reaches the compensator set point, the pump automatically reduces displacement to maintain constant pressure, eliminating energy waste and improving overall system efficiency. The compensator delivers an off-stroke response time of approximately 50 ms and an on-stroke response time of approximately 120 ms, ensuring rapid dynamic response.

2. High Volumetric Efficiency & Low Operating Costs
Denison PV Series piston pumps deliver exceptional volumetric efficiency, maintaining high performance even under loaded conditions. High volumetric efficiency translates to reduced heat generation and lower energy consumption, thereby reducing hydraulic equipment operating costs. The pump can operate at speeds as low as 600 rpm under full pressure (and as low as 400 rpm for mobile variants), further expanding application versatility.

3. Robust Heavy-Duty Construction
The high-strength cast iron body combined with swashplate axial piston design enables the pump to withstand high pressure loads while maintaining a compact footprint. The PV Series pumps are “designed right and built tough,” delivering reliable hydraulic power even under severe conditions.

4. Superior Interchangeability & Flexible Mounting
Denison PV Series hydraulic pumps offer excellent interchangeability with other popular hydraulic pumps. The C00 standard mounting configuration (SAE A flange with keyway + stop) enables direct replacement of existing pumps in the same series, significantly minimizing downtime.

5. Quiet Operation & High Power Density
Denison PV Series pumps are characterized by exceptionally quiet operation. While maintaining low noise levels, the PV29 delivers 275 bar working pressure at 61.9 cc displacement, offering high power density ideal for industrial equipment requiring compact power units.

Application Areas

• Power Plant EH Oil Systems: PV29-2R5D-C00 is widely used as the main pump in power plant electro-hydraulic (EH) control oil systems

• Industrial Hydraulic Systems: Hydraulic power units for open-circuit industrial equipment

• Marine Hydraulic Systems: Deck machinery, hatch cover hydraulic systems

• Foaming Machines & Plastics Machinery: Constant pressure variable pump configurations

• Presses & Forming Equipment: Hydraulic systems requiring constant pressure oil supply

• Metallurgical Equipment: Hydraulic systems for steel smelting and casting equipment

Expert Maintenance Tips

1. Pre-Installation Inspection: Prior to installation, confirm that the PV29-2R5D-C00 mounting flange conforms to SAE A type (C00 configuration) with keyway + stop shaft extension. Ensure alignment between the pump and drive mechanism meets SAE mounting standards to prevent premature bearing wear due to misalignment.

2. Fluid Cleanliness Control: Maintain system fluid cleanliness at ISO 18/15/13 or higher. Perform complete system flushing before initial start-up. Denison PV Series pumps are sensitive to fluid contamination—clean fluid is essential for long service life.

3. Pressure Compensator Setting & Tuning: The PV29-2R5D-C00 is equipped with pressure-compensated (constant pressure) control as standard. The compensator pressure set point can be adjusted via the adjustment bolt. Use a precision pressure gauge during commissioning; rotating the pressure adjustment bolt clockwise increases the set pressure. It is recommended to perform the setting under no-load conditions and gradually increase to the target value.

4. Inlet Condition Assurance: Ensure suction line inlet pressure meets the pump’s self-priming requirements. Keep suction lines as short and straight as possible, avoiding unnecessary bends and restrictions to prevent cavitation. As an open-circuit pump, the PV Series requires the reservoir to be positioned above or at the same level as the pump for optimal suction conditions.

5. Initial Start-Up & Priming: Before first start-up, pre-lubricate the pump by filling the housing with clean hydraulic fluid through the case drain port. After start-up, run the pump at low load for several minutes to purge air from the pump and system lines.

6. Scheduled Maintenance & Compensator Inspection: Follow the maintenance intervals specified in the Denison PV Series service manual. Pay particular attention to pressure compensator set-point drift, rotating group wear, and seal condition during routine inspections. Thanks to the excellent interchangeability of PV Series pumps, complete pump replacement can be performed when necessary to restore system performance.