Vickers Type 3520V 3520VQ Double Vane Pump | 3520VQ30-8, 3520V25A8

Vickers Type 3520V & 3520VQ Series High-Pressure Double Vane Pumps

Product Overview: The 3520V and 3520VQ Series are the definitive solutions for complex flow distribution and high-pressure output in heavy-duty hydraulic systems. Designed as double fixed displacement pumps, this series integrates two independent pump cartridges (Size 35 shaft end and Size 20 cover end) onto a single drive shaft. They are engineered for demanding environments requiring high-low pressure switching or dual-circuit supply. Featured models include 3520VQ-30-8-1CC-20, 3520V25A81CA-11L, and 3520VQ25A11-11CB20L. Utilizing patented Intra-vane technology, the 3520VQ series maintains exceptional stability and service life at pressures up to 21 MPa (3000 PSI).

Key Technical Advantages:

• Independent Dual-Circuit Supply: Combining the primary pump (shaft end) and secondary pump (cover end) allows for efficient flow splitting (e.g., rapid traverse and feed cycles), boosting energy efficiency and minimizing heat.

• VQ Series High-Pressure Durability: VQ models are specifically optimized for mobile machinery, offering superior shock resistance and continuous operation at 21 MPa (3000 PSI).

• Ultimate Silence & Low Pulsation: The pressure-balanced internal structure and precision-ground stator geometry significantly reduce noise, making them ideal for both indoor injection molding and outdoor mobile equipment.

• Rapid Cartridge Maintenance: Both pump ends utilize independent “drop-in” cartridge kits. Restore factory performance on-site by swapping cores without disconnecting main plumbing, drastically reducing downtime.

• Target Applications: Large excavators, wheel loaders, brick presses, industrial injection molding machines, and port lifting equipment.

Detailed Models & Parameters:

• Core Series: Vickers Type 3520V, 3520VQ Series (Double Pump).

• Model Keywords: 3520VQ-30-8-1CC-20, 3520V25A81CA-11L, 3520VQ25A11-11CB20L.

• Flow Combinations (USgpm @ 1200rpm):

  • Shaft End (Pump 1): 25 GPM, 30 GPM (Approx. 81-97 cm³/rev).

  • Cover End (Pump 2): 8 GPM, 11 GPM (Approx. 26-36 cm³/rev).

• Technical Specs Decoding:

  • 1 / 11: Shaft types (1-Straight Keyed / 11-High Strength Splined).

  • A / C / B: Port orientation codes (indicating relative positioning of inlets/outlets).

  • R / L: Rotation (R-Clockwise / L-Counter-Clockwise).

• Pressure Ratings: V Series up to 17.5 MPa (2500 PSI); VQ Series up to 21.0 MPa (3000 PSI).