Parker PVP3330 PVP3336 Piston Pump | PVP3330D2R6A4A21 | PVP Series

The Parker PVP Series (including PVP3310, PVP3320, PVP3330, and PVP3336) from LIC Hydraulic represents the pinnacle of reliability for Open-Circuit Axial Piston Pumps. Known for their rapid response and robust construction, these pumps are engineered to excel in both industrial and mobile environments. Models like the PVP3330D2R6A4A21 feature advanced pressure compensation technology to maximize energy efficiency. We provide 100% drop-in replacements, matching original Parker mounting patterns, shaft splines, and porting configurations.

Technical Highlights

• Displacement Range: Up to $36\text{ cm}^3\text{/rev}$ for the PVP33 series.

• Pressure Rating: Continuous duty up to $250\text{ bar}$ ($3625\text{ psi}$); Intermittent up to $310\text{ bar}$.

• Control Options: Pressure Compensated (D), Load Sensing (L), Remote Pressure (A).

• Material: High-strength cast iron housing for noise dampening and durability.

Core Advantages

• Superior Response Times: The PVP33 series features a highly responsive control system that adjusts flow almost instantaneously to meet system demand, reducing heat generation and parasitic power loss.

• Whisper-Quiet Operation: The heavy-duty housing and optimized internal porting minimize fluid turbulence and mechanical vibration, making the PVP series one of the quietest piston pumps in its class.

• Modular Control Versatility: The bolt-on compensator design allows for easy field conversion between different control modes (e.g., from simple pressure compensation to load sensing), providing maximum flexibility for system integrators.

• Exceptional Contamination Resistance: Hardened steel valve plates and specialized piston shoe coatings allow the PVP series to operate reliably even in environments where oil cleanliness may vary.

Expert Maintenance Tips

• Inlet Vacuum Check: Ensure the inlet line is adequately sized. Piston pumps like the PVP3330 are sensitive to inlet cavitation; a vacuum exceeding $0.85\text{ bar}$ absolute will cause rapid internal erosion.

• Case Drain Installation: The case drain line must be connected directly to the reservoir with zero back-pressure and must always be taken from the highest port on the pump to prevent air pockets.

• Filtration Standard: Maintain fluid cleanliness at ISO 18/16/13 or better. Regular oil analysis is recommended to extend the life of the high-precision rotating group.