Vickers Type KFDG4V Valve | KFDG4V-3-2C20N | NG6 Proportional Valve with Feedback

Vickers Type KFDG4V Series Proportional Directional Valves with Feedback

Product Overview: The Vickers KFDG4V Series is a high-performance, direct-operated proportional directional valve engineered for hydraulic systems requiring extreme precision and repeatability. Featuring the Size 3 (NG6 / CETOP 03) footprint, the standout feature of this series is the integrated LVDT displacement transducer (Position Feedback). By providing real-time monitoring and closed-loop correction of the spool position, the KFDG4V effectively eliminates hysteresis and delivers exceptional linearity and dynamic response.

This category highlights the primary model: KFDG4V-3-2C20N-Z-M-U1-H-7-20. These valves are the premier choice for precision machine tools, plastic processing machinery, synchronous lifting systems, and various high-performance closed-loop control circuits.

Key Technical Advantages:

• Integrated Position Feedback: The built-in LVDT sensor detects spool displacement in real-time, significantly reducing hysteresis and ensuring high-accuracy flow regulation.

• High Dynamic Response: Optimized proportional solenoids combined with precision-milled spools allow for rapid response to minute command signal changes, ideal for high-cycle applications.

• Wet-Pin Solenoid Engineering: The armature operates immersed in hydraulic fluid for self-lubrication and heat dissipation, resulting in smooth engagement and extended mechanical life.

• Flexible Electrical Connectivity: Utilizing the U1 (DIN 43650) connector standard, the integrated design simplifies installation and field maintenance.

Detailed Specifications & Parameters:

• Core Series: Vickers Type KFDG4V Proportional Valve.

• Featured Model Matrix: KFDG4V-3-2C20N-Z-M-U1-H-7-20, KFDG4V-3-2C20N-Z-M-U1-H7-20.

• Core Performance Specs:

  • Nominal Size: Size 3 (NG6 / CETOP 03).

  • Max Operating Pressure: Rated up to 315 Bar (4,500 PSI).

  • Max Flow Capacity: Rated up to 20 L/min – 40 L/min (depending on pressure drop).

  • Spool Function: 2C20N (3-position, 4-way, proportional linear regulation).

  • Feedback Option: Z (Integrated electronic position feedback).

  • Control Specs: To be used with specialized proportional amplifiers (e.g., EEA-PAM series).