| Selection Dimension |
Specific Parameters/Options |
Description |
| Model Designation |
4WRE |
Basic model: Direct-acting proportional directional valve with electrical position feedback and no integrated electronics (OBE) |
| Integrated Electronics (OBE) |
No Code |
Standard configuration without integrated electronics; external amplifier required (to be ordered separately) |
| Nominal Size |
6 |
Core size with component series 2X; mounting dimensions comply with Series 20-29 standards |
| Valve Core Type |
4/2 (2-position 4-way), 4/3 (3-position 4-way) |
4/3 type features spring-centered spool for automatic reset when de-energized; suitable for different oil circuit directional control needs |
| Rated Flow (Δp=10bar) |
4L/min (Code 04), 8L/min (Code 08), 16L/min (Code 16), 32L/min (Code 32) |
Flow rates distinguished by corresponding codes; matched to hydraulic system flow requirements |
| Seal Material |
V (FKM Fluororubber) |
Default FKM material; compatible with mineral oil and other hydraulic fluids to ensure sealing performance |
| Power Supply Voltage |
G24 (DC 24V) |
Suitable for industrial standard DC power supply; meets proportional solenoid drive requirements |
| Electrical Interface |
A1 (±10V Voltage Input), F1 (4-20mA Current Input) |
Two interface options available; compatible with PLCs, computers, and other control signal sources |
| Electrical Connection |
K4 (No Plug) |
Plug compliant with DIN EN 175301-803 standard required (to be ordered separately) |
| Special Protection |
J (Seawater-Resistant) |
Only available for Size 6; suitable for marine-related or humid/corrosive working conditions |
| Mounting Standard |
ISO 4401 |
Panel mounting with standard mounting hole pattern; compatible with universal hydraulic system manifold layouts |
| Maximum Working Pressure |
315bar |
Suitable for most medium-to-high pressure industrial hydraulic scenarios (e.g., hydraulic actuators in machine tools, automated production lines) |
4WRZ16E150-7X/6EG24N9EK4/M
4WRZ16E1-100-7X/6EG24N9EK4/D3M
4WRZ16E1-100-7X/6EG24N9EK4/M
4WRZ16E1-100-7X/6EG24N9K4/D3M
4WRZ16E1-100-7X/6EG24N9K4/M
4WRZ16E180-7X/6EG24N9EK4/M
4WRZ16E180-7X/6EG24N9K4/D3M
4WRZ16E180-7X/6EG24N9K4/M
4WRZ16E150-7X/6EG24N9TK4/D3M
4WRZ16E150-7X/6EG24N9TK4/M
4WRZ16E150-7X/6EG24N9ETK4/D3M
4WRZ16E150-7X/6EG24N9ETK4/M
4WRZ16E150-7X/6EG24N9EK4/D3M
4WRZ16E150-7X/6EG24N9K4/D3M
4WRZ16E125-7X/6EG24N9EK4/M
4WRZ16E125-7X/6EG24N9K4/D3M
4WRZ16E125-7X/6EG24N9K4/M
4WRZ16E100-7X/6EG24N9TK4/D3M
4WRZ16E100-7X/6EG24N9TK4/M
4WRZ16E100-7X/6EG24N9ETK4/D3M
4WRZ16E100-7X/6EG24N9ETK4/M
4WRZ16E100-7X/6EG24N9EK4/D3M
4WRZ16E100-7X/6EG24N9EK4/M
4WRZ16E1-100-7X/6EG24N9ETK4/M
4WRZ16E100-7X/6EG24N9K4/M
4WRZ16E100-7X/6EG24N9K4/D3M
What checks are required after commissioning?
Verify flow direction, proportional response to input signals, spool position indicator functionality (if equipped), and absence of leaks.
How to set up external pilot oil return?
Connect port Y to the tank for external pilot oil return; ensure return line pressure does not exceed 30 bar.
Can 4WRZ valves be mounted in a vertical orientation?
Yes, but horizontal mounting is preferred to minimize wear and ensure consistent performance.
What is the correct order to connect hydraulic lines?
Connect pressure port (P) first, then return port (T), followed by working ports (A/B); bleed air from lines before energizing the valve.
How to test the spool position indicator?
Apply a gradual electrical input signal; the indicator should switch outputs when preset spool positions are exceeded (within the overlap range).
What tools are required for 4WRZ installation?
Torque wrench (for mounting bolts), cable crimping tools (for electrical connections), and alignment pins (for subplate mounting).
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