Vickers PVH74QICRF1S10C25VS1 Piston Pump | PVH57 PVH98 PVH131 Variable Pump

The Eaton Vickers PVH Series from LIC Hydraulic represents the pinnacle of high-pressure axial variable displacement piston pump technology. Engineered for both industrial and mobile applications, the range includes PVH57, PVH74, PVH98, and PVH131. Specifically, the PVH74QICRF1S10C25VS1 model features integrated pressure compensation and load-sensing controls to optimize efficiency and minimize energy loss. We guarantee 100% mechanical interchangeability with original Vickers units. Every pump is subjected to 100% full-load testing under simulated high-pressure conditions, ensuring a volumetric efficiency of over $96\%$.

Technical Specifications (Bulleted List)

• Model Code: PVH74QICRF1S10C25VS1

• Displacement: $74.1\text{ cm}^3\text{/rev}$ ($4.52\text{ in}^3\text{/rev}$)

• Rated Continuous Pressure: $250\text{ bar}$ ($3625\text{ psi}$)

• Max Intermittent Pressure: $280\text{ bar}$ ($4060\text{ psi}$)

• Max Speed: $1800\text{–}2400\text{ rpm}$

• Control Type: IC (Industrial Compensator) with VS (Load Sensing)

• Mounting: SAE C 2-bolt flange

• Drive Shaft: S10 (SAE C Spline)

• Seal Material: Premium FKM (Viton) for high thermal resistance

• Housing: High-strength cast iron for maximum rigidity

Key Technical Advantages

• Heavy-Duty Bearing System: The PVH series is built with oversized tapered roller bearings that provide superior support for axial and radial loads, significantly extending the B10 bearing life compared to standard-duty pumps.

• Quiet Operation: Advanced valve plate timing and a rigid housing design effectively dampen fluid-borne noise and vibration, making the PVH74 ideal for indoor industrial environments with strict noise regulations.

• High Power Density: Despite its rugged cast-iron construction, the compact design delivers high power output relative to its size, allowing for more efficient use of space in hydraulic power units.

• Dynamic Response Controls: The VS load-sensing control ensures that the pump only produces the flow and pressure required by the load, drastically reducing heat generation and energy consumption.

Application Areas

• Industrial Power: Metal forming presses, injection molding, shears, and balers.

• Construction Equipment: Auxiliary pumps for excavators, drilling rigs, and concrete pump trucks.

• Marine Engineering: Deck machinery drives and steering gear systems.

• Material Handling: Power units for heavy-duty cranes and large conveyor systems.

Expert Maintenance Tips

• Suction Port Management: Avoid using fine suction strainers that may restrict flow and cause cavitation. Prioritize high-quality return line filtration ($10\text{ }\mu\text{m}$ absolute) to maintain oil cleanliness.

• Pressure Compensator Adjustment: The “25” in the code indicates the factory pressure setting. Post-installation, use the adjustment screw on the compensator valve to fine-tune the pressure to your system’s specific requirements for maximum efficiency.

• Case Drain Integrity: Ensure the case drain line is adequately sized and leads directly back to the tank below the oil level. Case pressure should be kept below $0.35\text{ bar}$ ($5\text{ psi}$) to protect the internal shaft seals.