Product Overview
The Rexroth 4WRPH 6 C4 B24L-20/G24Z4/M is a high-response, pilot-operated proportional directional valve from the renowned Bosch Rexroth 4WRPH series. Designed for demanding closed-loop and open-loop control applications, this valve features a 4-way, 3-position spool configuration with integrated position feedback and an on-board OBE (On-Board Electronics) amplifier. The “High-Response” designation indicates a fast step response and high dynamic bandwidth, enabling precise directional and velocity control of hydraulic actuators. With a nominal flow rate of 24 L/min at a 20 bar pressure drop per land, this valve is ideally suited for high-precision industrial systems requiring fast, accurate, and repeatable motion control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (4-Way, 3-Position, Pilot-Operated) |
| Model Designation | 4WRPH 6 C4 B24L-20/G24Z4/M |
| Nominal Size (NG) | NG6 (CETOP 3 / ISO 4401-03) |
| Spool Type | C4 – Overlapping spool, closed center |
| Nominal Flow Rate | 24 L/min at Δp = 20 bar per land |
| Operating Pressure | Up to 315 bar (system pressure, P/A/B ports) |
| Pilot Pressure | External pilot supply required (typically 30–50 bar) |
| Electrical Actuation | Proportional solenoid with on-board electronics (OBE), 24 V DC, G24Z4/M |
| Command Signal | ±10 V DC or 4–20 mA (configurable via OBE) |
| Mounting & Connection | Subplate mounting per ISO 4401-03 / CETOP 3 / NG6 |
| Seal Material | NBR (Buna-N), suitable for mineral oil-based hydraulic fluids |
Engineering Features & Advantages
- Precision Performance: The proportional directional valve (4-way, 3-position, pilot-operated) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With a nominal flow rate of 24 L/min at a 20 bar pressure drop per land, this valve is ideally suited for high-precision industrial systems requiring fast, accurate, and repeatable motion control.
PRODUCT IMAGES

Rexroth 4WRPH 6 C4 B24L-20/G24Z4/M High-Response Proportional Directional Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH 4WRPH 6 C4 B24L-20/G24Z4/M High-Response Solenoid Directional Valve. This Germany-made 24V DC hydraulic component features a pilot-operated spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.





