PVS16EH140C Parker Hydraulic Variable Vane Pump 140 bar

Product Overview

The PVS16EH140C is a Parker PVS series high-pressure pressure-compensated variable displacement vane pump with a displacement of 16 mL/rev and a rated outlet working pressure of 140 bar. Featuring a slanted-disc (swashplate) structure, this pump delivers fast adjustment response, wide adjustment range, low noise, and high efficiency. The PVS series covers multiple displacement sizes including PVS08, PVS12, PVS16, PVS25, PVS32, PVS40, and PVS50, making it a versatile solution for injection molding machines, hydraulic presses, machine tools, and industrial hydraulic power units.

Each unit is manufactured to exact Parker PVS series specifications, with mounting flange, drive shaft, port locations, and control interfaces fully dimensionally matched for drop-in interchangeability. Every pump undergoes 100% simulated load testing on our test bench, validating flow characteristics, pressure regulation accuracy, and operational stability across the rated pressure range before shipment.

Technical Specifications 

PVS16EH140C Core Specifications

• Model: PVS16EH140C

• Series: Parker PVS Series

• Displacement (Vg max): 16 mL/rev

• Rated Outlet Working Pressure: 140 bar

• Maximum Working Pressure: 140 bar

• Speed Range: 1000–1800 rpm

• Flow Rate (at 1500 rpm): approximately 23 L/min

• Power Consumption (at 1500 rpm, 140 bar): approximately 8.7 kW

• Control Type: EH — High-precision pressure-sensing variable control

• Minimum Inlet Pressure: 1.0 bar (absolute pressure 0.8 bar)

• Maximum Drain Port Pressure: 0.5 bar

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

• Viscosity Range: 22–100 mm²/s (up to 800 mm²/s during short-term startup)

• Rotation Direction: Clockwise (viewed from shaft end)

• Weight (approx.): 18.1 kg (single pump)

PVS Series Full Displacement Range

• PVS08: 8.3 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

• PVS12: 12.8 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

• PVS16: 16 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

• PVS25: 24 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

• PVS32: 31 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

• PVS40: 40 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

• PVS50: 51.5 mL/rev, rated pressure 140 bar, speed 1000–1800 rpm

Data referenced from Parker PVS series official technical documentation. The EH control code denotes high-precision pressure-sensing variable control.

Key Technical Advantages

1. Slanted-Disc Structure with Fast Adjustment Response

The PVS series utilizes a slanted-disc variable displacement structure, achieving stepless displacement adjustment by varying the swashplate angle. Compared to conventional variable vane pumps, this design offers faster adjustment response and a wider adjustment range, enabling rapid response to system pressure changes and ensuring stable output during load fluctuations. The pressure-compensated control automatically reduces displacement to near zero once the set pressure is reached, maintaining only leakage compensation and effectively reducing power consumption and oil temperature rise.

2. Three-Section Cast Iron Housing with Large-Area, Low-Friction Guide Sleeve

The pump features a three-section high-strength cast iron housing with a large-area, low-friction guide sleeve. The cast iron construction provides excellent compressive strength and thermal stability, maintaining structural integrity in harsh industrial environments. The low-friction guide sleeve reduces wear on the swashplate kinematic pair, extending the service life of the variable mechanism while lowering drive torque requirements.

3. Low Noise Design and Minimal Flow Pulsation

The PVS series is optimized in both flow passage design and vane structure, achieving low operating noise levels. The slanted-disc structure combined with a precision-machined valve plate minimizes output flow pulsation, reducing system vibration and noise. This characteristic makes it particularly suitable for noise-sensitive applications such as injection molding machines and machine tools.

4. High Volumetric Efficiency and Stable Pressure Regulation

Clearances between the vanes and stator ring are precisely controlled to maintain high volumetric efficiency under rated conditions. The pressure compensator utilizes a precision-machined control spool with high setting accuracy and repeatability, ensuring stable system pressure over extended operation and minimizing process deviations caused by pressure fluctuations.

5. Compact Structure with OEM Interchangeability

The PVS16EH140C weighs approximately 18.1 kg as a single pump and features a compact structure with mounting dimensions conforming to Parker PVS series standard interfaces. The mounting flange, drive shaft specifications, inlet/outlet port positions, and control interfaces are fully matched to the original pump, enabling direct replacement without piping or bracket modification, significantly reducing equipment downtime.

Application Areas

The PVS16EH140C and PVS series are widely deployed in the following machinery and systems:

• Plastic Processing Equipment: Injection molding machine hydraulic systems (clamping, injection, and holding pressure circuits)

• Metal Forming Equipment: Hydraulic presses, punch presses, and press brake power units

• Machine Tools: CNC machine tools, machining center hydraulic clamping and tool change systems

• Industrial Hydraulic Power Units: General-purpose hydraulic power packs, automation equipment hydraulic drives

• Metallurgical Equipment: Small-to-medium metallurgical machinery hydraulic transmission systems

Expert Maintenance Tips

Pre-Installation Checks:

• Verify pump rotation direction is clockwise (viewed from shaft end). Reverse operation is not permitted.

• Fill the pump housing with clean hydraulic oil (ISO cleanliness level 16/13 or better) before installation to prevent dry-start damage to the vanes and stator ring.

• Check drive shaft-to-coupling alignment: radial deviation ≤ 0.05 mm, angular deviation ≤ 0.5°.

Hydraulic Fluid and Filtration:

• Use ISO VG 46 anti-wear hydraulic oil with a viscosity range of 22–100 mm²/s. Short-term startup viscosity up to 800 mm²/s is acceptable.

• Maintain system filtration at ISO 16/13 cleanliness level or better.

• Replace all hydraulic fluid after the first 100 hours, then every 2000 hours or annually.

Operational Monitoring:

• Minimum inlet pressure must not drop below 1.0 bar (absolute pressure 0.8 bar). If inlet pressure is low, inspect the suction filter and reservoir level.

• Drain port pressure must not exceed 0.5 bar. Ensure the drain line is unobstructed and returns below the oil level in the reservoir.

• Oil temperature should be maintained between -10°C and +70°C. If exceeded, inspect the cooling system and circuit leakage.

• Every 1000 hours, verify pressure compensator settings for drift and re-adjust if necessary.