Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the leading manufacturers and suppliers of 4WRPEH Series High‑Speed Proportional Directional Valves
Direct‑Acting | Servo‑Grade Precision | Optional IO‑Link in China. If you're going to wholesale bulk durable 4WRPEH Series High‑Speed Proportional Directional Valves
Direct‑Acting | Servo‑Grade Precision | Optional IO‑Link made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.
Key Specifications At a Glance
| Parameter | 4WRPEH6 (NG6) | 4WRPEH10 (NG10) |
|---|---|---|
| Nominal Size | NG6 (Component Series 3X) | NG10 (Component Series 3X) |
| Mounting Standard | ISO 4401‑03‑02‑0‑05 | ISO 4401‑05‑04‑0‑05 |
| Max Operating Pressure (A/B/P ports) | 350 bar | 350 bar |
| Max Operating Pressure (T port) | 210 bar | 250 bar |
| Rated Flow | 4‑40 L/min (Δp = 70 bar per control edge) | 50‑100 L/min (Δp = 35 bar per control edge) |
| Max Recommended Flow | 63 L/min | 125 L/min |
| Control Interfaces | ±10V(A1) / 4‑20mA(F1) | ±10V(A1) / 4‑20mA(F1) |
| Dynamic Response Time | ＜10 ms | ＜10 ms |
| Hysteresis | ＜0.1% | ≤0.2% |
| Response Sensitivity | ＜0.05% | ＜0.05% |
| Optional Digital Interface | IO‑Link (PL d, Category3 per EN 13849‑1) | IO‑Link (PL d, Category3 per EN 13849‑1) |
| Pilot Oil Demand | None (direct‑acting structure) | None (direct‑acting structure) |
| Supply Voltage | 24 VDC (19‑36 VDC range) | 24 VDC (19‑36 VDC range) |
| Protection Class | IP65 (correctly mounted connector) | IP65 (correctly mounted connector) |
| Ambient Temperature | -20°C ~ +60°C | -20°C ~ +60°C |
| CE Compliance | MD 2006/42/EC, EN ISO 12100:2010, RoHS 2011/65/EU | MD 2006/42/EC, EN ISO 12100:2010, RoHS 2011/65/EU |
Available Configurations
Select the flow rating and spool type for your system:
| Model Number | Nominal Size | Control Type | Rated Flow | Quick Action |
|---|---|---|---|---|
| 4WRPEH 6 C B04L-3X/M/24A1 | NG6 | ±10V Voltage | 4 L/min | |
| 4WRPEH 6 C B12L-3X/M/24A1 | NG6 | ±10V Voltage | 12 L/min | |
| 4WRPEH 6 C B24L-3X/M/24A1 | NG6 | ±10V Voltage | 24 L/min | |
| 4WRPEH 6 C B40L-3X/M/24A1 | NG6 | ±10V Voltage | 40 L/min | |
| 4WRPEH 6 C1 B04L-3X/M/24A1 | NG6 | ±10V Voltage | 4 L/min | |
| 4WRPEH 6 C1 B12L-3X/M/24A1 | NG6 | ±10V Voltage | 12 L/min | |
| 4WRPEH 6 C1 B24L-3X/M/24A1 | NG6 | ±10V Voltage | 24 L/min | |
| 4WRPEH 6 C1 B40L-3X/M/24A1 | NG6 | ±10V Voltage | 40 L/min | |
| 4WRPEH 6 C3 B04L-3X/M/24A1 | NG6 | ±10V Voltage | 4 L/min | |
| 4WRPEH 6 C3 B12L-3X/M/24A1 | NG6 | ±10V Voltage | 12 L/min | |
| 4WRPEH 6 C3 B24L-3X/M/24A1 | NG6 | ±10V Voltage | 24 L/min | |
| 4WRPEH 6 C3 B40L-3X/M/24A1 | NG6 | ±10V Voltage | 40 L/min | |
| 4WRPEH 6 C4 B04L-3X/M/24A1 | NG6 | ±10V Voltage | 4 L/min | |
| 4WRPEH 6 C4 B12L-3X/M/24A1 | NG6 | ±10V Voltage | 12 L/min | |
| 4WRPEH 6 C4 B24L-3X/M/24A1 | NG6 | ±10V Voltage | 24 L/min | |
| 4WRPEH 6 C4 B40L-3X/M/24A1 | NG6 | ±10V Voltage | 40 L/min | |
| 4WRPEH 6 C B04L-3X/M/24F1 | NG6 | 4–20mA Current | 4 L/min | |
| 4WRPEH 6 C B12L-3X/M/24F1 | NG6 | 4–20mA Current | 12 L/min | |
| 4WRPEH 6 C B24L-3X/M/24F1 | NG6 | 4–20mA Current | 24 L/min | |
| 4WRPEH 6 C B40L-3X/M/24F1 | NG6 | 4–20mA Current | 40 L/min | |
| 4WRPEH 6 C1 B04L-3X/M/24F1 | NG6 | 4–20mA Current | 4 L/min | |
| 4WRPEH 6 C1 B12L-3X/M/24F1 | NG6 | 4–20mA Current | 12 L/min | |
| 4WRPEH 6 C1 B24L-3X/M/24F1 | NG6 | 4–20mA Current | 24 L/min | |
| 4WRPEH 6 C1 B40L-3X/M/24F1 | NG6 | 4–20mA Current | 40 L/min | |
| 4WRPEH 6 C3 B04L-3X/M/24F1 | NG6 | 4–20mA Current | 4 L/min | |
| 4WRPEH 6 C3 B12L-3X/M/24F1 | NG6 | 4–20mA Current | 12 L/min | |
| 4WRPEH 6 C3 B24L-3X/M/24F1 | NG6 | 4–20mA Current | 24 L/min | |
| 4WRPEH 6 C3 B40L-3X/M/24F1 | NG6 | 4–20mA Current | 40 L/min | |
| 4WRPEH 6 C4 B04L-3X/M/24F1 | NG6 | 4–20mA Current | 4 L/min | |
| 4WRPEH 6 C4 B12L-3X/M/24F1 | NG6 | 4–20mA Current | 12 L/min | |
| 4WRPEH 6 C4 B24L-3X/M/24F1 | NG6 | 4–20mA Current | 24 L/min | |
| 4WRPEH 6 C4 B40L-3X/M/24F1 | NG6 | 4–20mA Current | 40 L/min | |
| 4WRPEH 10 C B50L-3X/M/24A1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C B100L-3X/M/24A1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C1 B50L-3X/M/24A1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C1 B100L-3X/M/24A1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C3 B50L-3X/M/24A1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C3 B100L-3X/M/24A1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C4 B50L-3X/M/24A1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C4 B100L-3X/M/24A1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C B50L-3X/M/24F1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C B100L-3X/M/24F1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C1 B50L-3X/M/24F1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C1 B100L-3X/M/24F1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C3 B50L-3X/M/24F1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C3 B100L-3X/M/24F1 | NG10 | 4–20mA Current | 100 L/min | |
| 4WRPEH 10 C4 B50L-3X/M/24F1 | NG10 | 4–20mA Current | 50 L/min | |
| 4WRPEH 10 C4 B100L-3X/M/24F1 | NG10 | 4–20mA Current | 100 L/min |
Need a custom spool profile or special configuration? Send us your requirements → Get Custom Solution
Product Key Advantages
1. Standardized Two‑Size Portfolio for Small‑to‑Medium Hydraulics
4WRPEH6 for small‑flow compact systems and 4WRPEH10 for medium‑flow heavy‑duty applications. Well‑defined flow‑grade classification covers 4‑100 L/min, matching the majority of precision industrial hydraulic system requirements.
2. Servo‑Grade High‑Precision Flow Regulation
Adopts direct‑acting architecture and servo‑quality matched spool‑and‑sleeve assembly. Achieves flow‑control accuracy up to ±3%, ultra‑low hysteresis and high repeatability for demanding position, velocity and pressure closed‑loop control.
3. <10ms Ultra‑Fast Dynamic Response
High‑sensitivity solenoid drive delivers ultra‑fast response performance, perfectly satisfying high‑frequency cyclic adjustment requirements for test benches, injection molding and automated production equipment.
4. Safe & Stable Industrial‑Grade Performance
Spring‑centered spool automatically returns to fail‑safe neutral position upon power loss to mitigate system risks. IP65 ingress protection together with wide ambient‑temperature range ensures reliable operation under various workshop conditions.
Compatibility Reference
| Corresponding Rexroth Model | BOKIN Equivalent Model | Core Match Points |
|---|---|---|
| 4WRPEH 6 C B04L-3X/M/24A1 | 4WRPEH 6 C B04L-3X/M/24A1 | Same mounting dimensions, electrical interface, hydraulic performance |
| 4WRPEH 6 C B12L-3X/M/24A1 | 4WRPEH 6 C B12L-3X/M/24A1 | |
| 4WRPEH 6 C B24L-3X/M/24A1 | 4WRPEH 6 C B24L-3X/M/24A1 | |
| 4WRPEH 6 C B40L-3X/M/24A1 | 4WRPEH 6 C B40L-3X/M/24A1 | |
| 4WRPEH 6 C1 B04L-3X/M/24A1 | 4WRPEH 6 C1 B04L-3X/M/24A1 | |
| 4WRPEH 6 C1 B12L-3X/M/24A1 | 4WRPEH 6 C1 B12L-3X/M/24A1 | |
| 4WRPEH 6 C1 B24L-3X/M/24A1 | 4WRPEH 6 C1 B24L-3X/M/24A1 | |
| 4WRPEH 6 C1 B40L-3X/M/24A1 | 4WRPEH 6 C1 B40L-3X/M/24A1 | |
| 4WRPEH 6 C3 B04L-3X/M/24A1 | 4WRPEH 6 C3 B04L-3X/M/24A1 | |
| 4WRPEH 6 C3 B12L-3X/M/24A1 | 4WRPEH 6 C3 B12L-3X/M/24A1 | |
| 4WRPEH 6 C3 B24L-3X/M/24A1 | 4WRPEH 6 C3 B24L-3X/M/24A1 | |
| 4WRPEH 6 C3 B40L-3X/M/24A1 | 4WRPEH 6 C3 B40L-3X/M/24A1 | |
| 4WRPEH 6 C4 B04L-3X/M/24A1 | 4WRPEH 6 C4 B04L-3X/M/24A1 | |
| 4WRPEH 6 C4 B12L-3X/M/24A1 | 4WRPEH 6 C4 B12L-3X/M/24A1 | |
| 4WRPEH 6 C4 B24L-3X/M/24A1 | 4WRPEH 6 C4 B24L-3X/M/24A1 | |
| 4WRPEH 6 C4 B40L-3X/M/24A1 | 4WRPEH 6 C4 B40L-3X/M/24A1 | |
| 4WRPEH 6 C B04L-3X/M/24F1 | 4WRPEH 6 C B04L-3X/M/24F1 | |
| 4WRPEH 6 C B12L-3X/M/24F1 | 4WRPEH 6 C B12L-3X/M/24F1 | |
| 4WRPEH 6 C B24L-3X/M/24F1 | 4WRPEH 6 C B24L-3X/M/24F1 | |
| 4WRPEH 6 C B40L-3X/M/24F1 | 4WRPEH 6 C B40L-3X/M/24F1 | |
| 4WRPEH 6 C1 B04L-3X/M/24F1 | 4WRPEH 6 C1 B04L-3X/M/24F1 | |
| 4WRPEH 6 C1 B12L-3X/M/24F1 | 4WRPEH 6 C1 B12L-3X/M/24F1 | |
| 4WRPEH 6 C1 B24L-3X/M/24F1 | 4WRPEH 6 C1 B24L-3X/M/24F1 | |
| 4WRPEH 6 C1 B40L-3X/M/24F1 | 4WRPEH 6 C1 B40L-3X/M/24F1 | |
| 4WRPEH 6 C3 B04L-3X/M/24F1 | 4WRPEH 6 C3 B04L-3X/M/24F1 | |
| 4WRPEH 6 C3 B12L-3X/M/24F1 | 4WRPEH 6 C3 B12L-3X/M/24F1 | |
| 4WRPEH 6 C3 B24L-3X/M/24F1 | 4WRPEH 6 C3 B24L-3X/M/24F1 | |
| 4WRPEH 6 C3 B40L-3X/M/24F1 | 4WRPEH 6 C3 B40L-3X/M/24F1 | |
| 4WRPEH 6 C4 B04L-3X/M/24F1 | 4WRPEH 6 C4 B04L-3X/M/24F1 | |
| 4WRPEH 6 C4 B12L-3X/M/24F1 | 4WRPEH 6 C4 B12L-3X/M/24F1 | |
| 4WRPEH 6 C4 B24L-3X/M/24F1 | 4WRPEH 6 C4 B24L-3X/M/24F1 | |
| 4WRPEH 6 C4 B40L-3X/M/24F1 | 4WRPEH 6 C4 B40L-3X/M/24F1 | |
| 4WRPEH 10 C B50L-3X/M/24A1 | 4WRPEH 10 C B50L-3X/M/24A1 | |
| 4WRPEH 10 C B100L-3X/M/24A1 | 4WRPEH 10 C B100L-3X/M/24A1 | |
| 4WRPEH 10 C1 B50L-3X/M/24A1 | 4WRPEH 10 C1 B50L-3X/M/24A1 | |
| 4WRPEH 10 C1 B100L-3X/M/24A1 | 4WRPEH 10 C1 B100L-3X/M/24A1 | |
| 4WRPEH 10 C3 B50L-3X/M/24A1 | 4WRPEH 10 C3 B50L-3X/M/24A1 | |
| 4WRPEH 10 C3 B100L-3X/M/24A1 | 4WRPEH 10 C3 B100L-3X/M/24A1 | |
| 4WRPEH 10 C4 B50L-3X/M/24A1 | 4WRPEH 10 C4 B50L-3X/M/24A1 | |
| 4WRPEH 10 C4 B100L-3X/M/24A1 | 4WRPEH 10 C4 B100L-3X/M/24A1 | |
| 4WRPEH 10 C B50L-3X/M/24F1 | 4WRPEH 10 C B50L-3X/M/24F1 | |
| 4WRPEH 10 C B100L-3X/M/24F1 | 4WRPEH 10 C B100L-3X/M/24F1 | |
| 4WRPEH 10 C1 B50L-3X/M/24F1 | 4WRPEH 10 C1 B50L-3X/M/24F1 | |
| 4WRPEH 10 C1 B100L-3X/M/24F1 | 4WRPEH 10 C1 B100L-3X/M/24F1 | |
| 4WRPEH 10 C3 B50L-3X/M/24F1 | 4WRPEH 10 C3 B50L-3X/M/24F1 | |
| 4WRPEH 10 C3 B100L-3X/M/24F1 | 4WRPEH 10 C3 B100L-3X/M/24F1 | |
| 4WRPEH 10 C4 B50L-3X/M/24F1 | 4WRPEH 10 C4 B50L-3X/M/24F1 | |
| 4WRPEH 10 C4 B100L-3X/M/24F1 | 4WRPEH 10 C4 B100L-3X/M/24F1 | |
| More models are available; please contact us for additional model options. | ||
Note: For system configuration reference only. BOKIN is an independent brand. Please verify specifications before installation.
Typical Applications
- High‑frequency dynamic hydraulic test rigs & fatigue testing equipment
- Precision injection molding & auxiliary hydraulic circuits
- Metallurgical and new‑energy production machinery
- Industry 4.0 smart hydraulic stations with IO‑Link requirements
- Safety‑related hydraulic circuits requiring PL d protection level
- Compact‑to‑medium‑size automated production‑line hydraulic actuators
Need current loop control for long-distance wiring?
Need larger flow capacity?
Installation & Commissioning Guidelines
Installation Notes
- Thoroughly clean all oil ports and connecting surfaces before installation to prevent contaminants from entering the valve body.
- Confirm control‑signal type (±10V or 4‑20 mA) and power‑supply voltage match valve nameplate specifications prior to wiring. For F1 current‑loop version, use shielded twisted‑pair cables.
- Tighten mounting bolts evenly to the specified torque according to corresponding ISO 4401 standard (NG6 / NG10) to avoid housing deformation and internal leakage.
- Gradually ramp‑up system pressure during commissioning. Check for leaks and abnormal noise before full‑load operation. For F1 version, simulate signal loss to validate cable‑break protection.
Safety Precautions
- Retain manual hydraulic override capability for backup safety during retrofit work.
- Install pressure‑relief valves for circuit over‑pressure protection.
- Configure emergency‑stop logic to cut power to proportional valves in fault scenarios.
- All hoses and pipe connections shall be rated for system maximum working pressure.
FAQ
Q: What is the difference between 4WRPEH6 and 4WRPEH10?
A: 4WRPEH6 (NG6) is small‑flow variant for compact hydraulic systems, rated flow 4‑40 L/min. 4WRPEH10 (NG10) is medium‑flow variant for heavier‑duty equipment, rated flow 50‑100 L/min. Both share <10 ms response, A1/F1 control and optional IO‑Link function.
Q: Can 4WRPEH replace original Rexroth 4WRPEH valves directly?
A: Yes. Both sizes follow ISO 4401 mounting, identical electrical interfaces and equivalent hydraulic dynamic performance for drop‑in replacement. Please provide your complete part number for final compatibility check.
Q: What is the function of optional IO‑Link?
A: IO‑Link enables remote parameter configuration, real‑time operating‑condition monitoring, fault diagnosis and safety shut‑off function up to PL d / Category 3 per EN 13849‑1 for Industry 4.0‑oriented systems. IO‑Link needs to be specified at order time; field retrofitting is not supported.
Q: Which control interface should I choose, A1 (±10V) or F1 (4‑20 mA)?
A: Choose A1(±10V) for higher‑precision short‑wiring scenarios. Choose F1(4‑20 mA) for long‑distance transmission or sites with heavy electromagnetic interference, which also comes with cable‑break protection.
Q: What are MOQ, lead‑time and warranty terms?
A: MOQ is 1 piece for all standard configurations. Standard models deliver within 2‑4 weeks after order confirmation. All valves carry a 12‑month quality warranty counted from delivery date plus lifelong technical consultation.
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