PVS25EH140C2 Parker Variable Vane Pump 24cc 140bar

Product Overview

The PVS25EH140C2, PVS25AZ140C2, and PVS32AZ140C2 are swashplate-type variable displacement vane pumps from the Parker Hannifin PVS series—a widely applied pressure-compensated variable vane pump line within Parker’s hydraulic product portfolio. The PVS series features a proven swashplate design with displacements ranging from 8 to 50 ml/rev, rated outlet pressure of 140 bar, and speed range of 1000–1800 rpm.

PVS series variable vane pumps are renowned for their short response time, wide adjustment range, low noise, and high efficiency. The through-shaft design supports multiple pump series connections for open-circuit applications. The series offers multiple control options: AZ indicates standard pressure-compensated control, while EH indicates high-precision pressure-sensing variable control. The “140” designation indicates maximum adjustable pressure of 140 kg/cm² (approx. 140 bar), and “C2” indicates rotation direction, seal type, and mounting standard.

The PVS25 frame size delivers 24 ml/rev displacement with 35 L/min flow at 1500 rpm and 9.9 kW power consumption at rated pressure. The PVS32 frame size delivers 31 ml/rev displacement with 45 L/min flow at 1500 rpm and 12.7 kW power consumption at rated pressure.

Designed as 100% interchangeable direct replacements for original Parker PVS series pumps, these products match OEM specifications in mounting dimensions, porting interfaces, and performance characteristics. Every unit undergoes 100% simulated duty cycle testing prior to shipment, validating volumetric efficiency, mechanical efficiency, and sealing integrity under actual operating load conditions.

Technical Specifications (Bulleted List)

PVS25EH140C2 / PVS25AZ140C2

• Model: PVS25EH140C2 / PVS25AZ140C2

• Brand: Parker Hannifin

• Series: PVS Series Swashplate Variable Vane Pump

• Product Type: Pressure Compensated Variable Vane Pump

• Frame Size: 25

• Geometric Displacement: 24 ml/rev

• Rated Pressure: 140 bar (14 MPa)

• Maximum Pressure: 140 bar

• Speed Range: 1000–1800 rpm

• Flow @ 1500 rpm: 35 L/min

• Power Consumption @ 1500 rpm: 9.9 kW

• Fluid Temperature Range: -10°C to +70°C

• Viscosity Range: 22–100 mm²/s

• Direction of Rotation: Clockwise (standard configuration)

• Weight: Approx. 18.1 kg

• Mounting Type: VDMA 24560/1 compliant; 471 mounting flange per ISO 3019/2 (metric)

• Circuit Type: Open circuit

• Control Type: EH = High-precision pressure-sensing variable control / AZ = Standard pressure-compensated control

PVS32AZ140C2

• Model: PVS32AZ140C2

• Brand: Parker Hannifin

• Series: PVS Series Swashplate Variable Vane Pump

• Product Type: Pressure Compensated Variable Vane Pump

• Frame Size: 32

• Geometric Displacement: 31 ml/rev

• Rated Pressure: 140 bar (14 MPa)

• Maximum Pressure: 140 bar

• Speed Range: 1000–1800 rpm

• Flow @ 1500 rpm: 45 L/min

• Power Consumption @ 1500 rpm: 12.7 kW

• Fluid Temperature Range: -10°C to +70°C

• Viscosity Range: 22–100 mm²/s

• Direction of Rotation: Clockwise (standard configuration)

• Weight: Approx. 33.2 kg

• Mounting Type: VDMA 24560/1 compliant; 471 mounting flange per ISO 3019/2 (metric)

• Circuit Type: Open circuit

• Control Type: AZ = Standard pressure-compensated control

Key Technical Advantages

1. Swashplate Variable Design with Fast Response and Wide Adjustment Range

The PVS series features a proven swashplate design with short response time and wide adjustment range. This enables the pump to respond rapidly to system pressure changes and automatically adjust displacement—making it particularly suitable for industrial hydraulic systems requiring frequent flow and pressure adjustments.

2. Pressure-Compensated Control for Energy-Efficient Operation

The PVS series employs pressure-compensated control, where pump output flow automatically adjusts based on system load. When the system reaches the set pressure, the pump automatically reduces displacement to only maintain leakage flow, significantly reducing energy loss and heat generation.

3. High-Strength Cast Steel Housing for Extended Service Life

The PVS series features a high-strength cast steel housing designed for reliable and smooth operation. The robust housing construction ensures long-term stable operation under continuous high-load conditions. The through-shaft design meets SAE A or AA standards, supporting multiple pump series connections.

4. Low-Noise Operation for Diverse Applications

PVS series pumps are renowned for their low noise levels, making them suitable for a wide range of applications. Optimized internal flow paths and precision-machined friction pairs maintain low-noise operation across the entire operating range—particularly suitable for indoor industrial equipment with strict noise requirements.

5. 100% Interchangeability – Zero-Modification Drop-In Replacement

Manufactured to exact OEM mounting dimensions, porting specifications, and performance standards, these pumps achieve 100% interchangeability with original Parker PVS series units. Standard mounting dimensions allow direct replacement of original Parker PVS series pumps without any modifications.

6. 100% Simulated Duty Cycle Testing for Extreme Environment Reliability

Every pump undergoes 100% simulated duty cycle testing before shipment, validating performance under rated pressure (140 bar) and maximum speed conditions—ensuring long-term reliability in demanding industrial hydraulic applications.

7. Vickers Interface Design for Convenient Installation

Featuring Vickers interface design with conveniently positioned inlet/outlet ports. Replaceable piston kits and copper valve plates further simplify maintenance procedures.

8. Wide Speed and Temperature Operating Range

The PVS series supports a speed range of 1000–1800 rpm and fluid temperature range of -10°C to +70°C. Viscosity range of 22–100 mm²/s provides compatibility with a wide variety of hydraulic fluids.

Application Areas

• Injection Molding Machinery: Hydraulic systems for injection molding machines

• Hydraulic Presses: Press hydraulic systems

• Machine Tools: CNC machines, machining center hydraulic systems

• Hydraulic Power Units: General industrial hydraulic power stations

• Automation Equipment: Industrial automation hydraulic systems

• General Industrial Hydraulic Systems: Various industrial hydraulic applications

• Metallurgical Industry: Metallurgical machinery hydraulic transmission systems

Expert Maintenance Tips

1. Pre-Installation Preparation: Before using the PVS series vane pump, read and understand the complete Parker instruction manual. For first commissioning, fill the pump housing with hydraulic fluid through the case drain port—never operate the pump without fluid.

2. Mounting Orientation Requirements: For horizontal mounting, install the pressure port sideways or facing upward, the suction port sideways or facing downward, and the drain port must always face upward. For vertical mounting, the shaft end should face upward.

3. Suction Line Design: Install the pump and suction line so that absolute pressure at the suction port is not less than 0.8 bar. Keep the suction line as short and straight as possible. If the pump is mounted inside the tank, especially for high-response pumps, connect a short suction pipe with a 45° cut at the suction port to improve suction conditions.

4. Suction Port Pressure Limits: Maximum allowable suction port pressure is 1.0 bar; maximum allowable drain port pressure is 0.8 bar (absolute pressure), maximum 0.5 bar.

5. Prevent Air Ingestion: Since air entering the suction line can cause cavitation, noise, and pump damage, ensure all connections are leak-free.

6. Drain Port Flow Consideration: During pump compensation and displacement changes, pilot control flow may temporarily increase. Pay attention to the sizing of port connections.

7. Oil Cleanliness Control: Recommended system filtration not less than ISO 4406 19/17/14. Regular oil analysis is recommended with filter change intervals adjusted based on contamination levels.

8. Regular Inspection Schedule: Regular inspection of the hydraulic system and pump is recommended. Check hydraulic fluid level daily and monitor operating temperature, noise levels, and case drain flow regularly. Abnormal increases may indicate internal wear or seal degradation.