Sauer PV Series Pump | PV20, PV21, PV22, PV23 | Hydrostatic Piston Pump for Concrete Mixer

Sauer-Danfoss PV20 Series (Series 20) Closed Circuit Variable Piston Pump

Product Overview: The Sauer-Danfoss PV20 series (including PV21, PV22, PV23, PV24, etc.) is a legendary benchmark in hydrostatic transmissions. Engineered specifically for Closed Circuit systems, this series covers a wide range of displacements suitable for everything from compact utility machines to heavy-duty industrial equipment. The representative model, such as PV22MHRAAB13B10, integrates a charge pump, high-pressure relief valves, and a servo-control mechanism. With its rugged cast-iron housing and optimized swashplate rotating group, the PV series delivers precise stepless speed regulation and massive traction, serving as the power heart for concrete mixers, pavers, and agricultural harvesters.

Key Technical Advantages:

• Proven Closed-Loop Architecture: Direct fluid circulation between the pump and motor ensures rapid response, minimal energy loss, and superior hydrostatic braking performance.

• High Reliability & Durability: Rated for operating pressures up to 350 Bar. Reinforced bearings and piston groups ensure stable, long-term operation under harsh outdoor environments.

• Versatile Control Options:

  • MHR Manual Servo Control: The PV22MHR allows for precise displacement modulation via manual lever, providing tactile feedback ideal for mixer drum drives or simple travel controls.

  • Electric Proportional Control: Compatible with modern electronic systems for automated driving and remote operation.

• Highly Integrated Design: Internal integration of the charge pump, check valves, and high-pressure relief valves streamlines external plumbing and minimizes potential leakage points.

• Universal Interchangeability: Adhering to international mounting standards, the PV20 series offers high market availability, making it perfect for retrofitting and rapid maintenance replacement.

Detailed Models & Parameters:

• Core Series: Sauer PV20 Series (SPV Series).

• Available Sizes: PV20, PV21, PV22, PV23, PV24, PV25, PV26, PV27.

• Representative Model: PV22MHRAAB13B10.

• Pressure Ratings: 210 – 350 Bar (3000 – 5000 PSI depending on size).

• Max Speed: Up to 2500 – 3500 RPM.