Rexroth Type 4WRPH6 High-Response Proportional Valve | 4WRPH6C4B40L-2X | 24V DC | Hydraulic Servo Valve

4WRPH6 Series High-Response Proportional Servo Valves

Product Overview:

The 4WRPH6 series is engineered for closed-loop hydraulic systems that demand ultimate dynamic response and extreme control precision. As a direct-operated proportional directional valve, it features integrated spool position feedback, utilizing an inductive displacement transducer to monitor and correct the spool position in real-time. This ensures “servo-grade” performance with minimal hysteresis and exceptional repeatability for applications such as injection molding, flight simulators, and precision presses.

Featured model: 4WRPH6C4B40L-2X/G24Z4/M.

Key Technical Advantages:

• Servo-Grade Dynamics: The direct-acting design eliminates pilot-stage lag. Combined with high-performance proportional solenoids, it delivers extremely short step response times and high frequency-response bandwidth.

• Closed-Loop Position Feedback: The spool position is precisely monitored by an integrated transducer, ensuring the output flow strictly follows the electrical command signal while resisting flow force disturbances.

• High-Pressure Durability: The valve body is reinforced to withstand rated operating pressures up to 31.5 MPa (315 bar).

• G24Z4 Standard Interface: Optimized for mainstream 24V DC proportional amplifiers (e.g., VT series), offering easy wiring and robust EMI resistance.

Detailed Specifications & Parameters:

• Model Breakdown:

  • 4WRPH6: Nominal size NG6 (ISO 4401-03).

  • C4B: Specific spool function and type for precise direction and flow control.

  • 40L: Rated flow of 40 L/min (at $\Delta p = 10 \text{ bar}$).

  • 2X: Design series 20 to 29.

  • G24Z4: 24V DC supply with Z4 standard connector.

• Core Technical Specs:

  • Max Operating Pressure: 31.5 MPa (315 bar).

  • Hysteresis: $< 0.1\%$.

  • Repeatability: $< 0.05\%$.

  • Seal Material: Standard NBR, with FKM (Viton) options available for specialized fluids.