Not every application requiring variable displacement control operates at high pressure. KCL’s KUVN and KVDN Series round out our low-pressure product range, delivering the flexibility of variable output control to applications specifically engineered around lower operating pressures — including motor-integrated configurations for customers who need a complete, pre-matched pump and motor solution in a single sourcing decision.

Why Low-Pressure Applications Still Benefit from Variable Control

It’s a common misconception that variable displacement technology is only relevant to high-pressure circuits. In reality, many lower-pressure industrial applications benefit just as much from output that adjusts to real-time demand — reducing energy consumption, minimizing heat generation, and extending component service life, exactly as it does in higher-pressure systems. The KUVN and KVDN Series bring these benefits to applications specifically engineered around lower-pressure operating requirements, where a high-pressure-rated variable pump would be genuinely over-specified for the actual duty cycle.

KUVN Series — Motor-Integrated Configuration

The KUVN Series is available with an integrated motor configuration, giving customers a complete, pre-matched pump-and-motor unit rather than requiring separate sourcing and coupling of these two components. For applications where a self-contained, ready-to-install hydraulic power source is preferable to assembling individual components, the KUVN’s integrated design simplifies both procurement and installation.

This configuration is particularly useful for OEMs building equipment where hydraulic power unit space is constrained, or where reducing the number of individually sourced and assembled components streamlines the manufacturing process for the end equipment.

KVDN Series — Standalone Variable Pump Configuration

The KVDN Series offers the same low-pressure variable displacement principle in a standalone pump configuration, suited to applications where the pump will be integrated with an existing or separately specified motor, or where system designers prefer to select their own motor pairing rather than working from a pre-integrated unit.

Shared Engineering Principles

Both the KUVN and KVDN Series draw on the same core variable displacement engineering that runs throughout KCL’s broader product range — output that adjusts to actual system demand rather than running at a fixed rate regardless of downstream requirements. Applied specifically to lower-pressure operating conditions, this means these series deliver genuine, application-appropriate variable control without the cost or complexity of a pump engineered for pressure ranges the application will never actually reach.

Typical Applications

• Lower-pressure industrial hydraulic circuits that still benefit from demand-responsive variable output
• OEM equipment requiring a compact, integrated pump-and-motor solution (KUVN configuration)
• Applications with existing or independently specified motor pairings requiring a standalone variable pump (KVDN configuration)
• Space- or cost-constrained hydraulic power unit designs where a right-sized, lower-pressure variable pump is more appropriate than an over-specified high-pressure unit

Why Choose KCL’s KUVN/KVDN Series

Specifying the right pump for your application isn’t just about meeting your maximum pressure requirement — it’s about matching the pump’s engineering to your actual operating conditions. For applications genuinely operating at lower pressure ranges, the KUVN and KVDN Series deliver the real benefits of variable displacement control without unnecessary over-specification, manufactured under KCL’s ISO 9001:2015 certified quality systems and backed by our full technical support infrastructure.

Not sure whether your application needs the motor-integrated KUVN or the standalone KVDN configuration? Contact our technical sales team with your pressure and installation requirements, and we’ll help you decide.