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Product Details:
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| Weight: | 18.3 Kg | Protection Rating: | IP65 (when Electrical Plug Connected) |
|---|---|---|---|
| Ambient Temperature: | -20°C To +60°C | Viscosity Range: | 10 To 800 Mm²/s (recommended 20–100 Mm²/s) |
| Media Temperature: | -20°C To +80°C |
|
Parameter |
Specification |
|---|---|
|
Order Number |
0811404405 |
|
Model |
4WRL25V370M-3X/G24Z4/M |
|
Type |
Pilot-operated, high-response proportional directional valve (servo performance) |
|
Function |
4/3-way (4 ports, 3 positions) |
|
Nominal Size |
NG25 (CETOP 8, Size 25) |
|
Max. Operating Pressure |
P, A, B, X: 350 bar |
|
Rated Flow |
370 L/min (at Δp = 10 bar across the valve) |
|
Flow Characteristic |
Progressive (M) with fine metering notch for precise low-flow control |
|
Pilot Stage |
NG6 servo solenoid valve with LVDT feedback |
|
Electronics |
Integrated electronics (built-in trigger electronics) |
|
Supply Voltage |
24V DC (G24) |
|
Control Signal |
±10 V DC (standard for servo-proportional valves) |
|
Feedback Signal |
Spool position feedback (LVDT) |
|
Manual Override |
Yes (M = concealed manual override) |
|
Seal Material |
NBR (M) |
|
Electrical Connector |
Plug with cable socket (Z4) per DIN 43560-AM2 |
|
Mounting Interface |
ISO 4401-08-07-0-94 (CETOP 8, NG25 subplate) |
|
Suitable Media |
Mineral oils (HL, HLP), HFC, HFD, biodegradable oils |
|
Media Temperature |
-20°C to +80°C |
|
Viscosity Range |
10 to 800 mm²/s (recommended 20–100 mm²/s) |
|
Ambient Temperature |
-20°C to +60°C |
|
Protection Rating |
IP65 (when electrical plug connected) |
|
Weight |
Approx. 18.3 kg |
FAQ:
Pilot-Operated Design (High Flow)
Unlike the direct-operated 4WRPE valves, the 4WRL series uses a two-stage design. A small NG6 pilot valve controls the main stage, allowing for high flow rates (370 L/min) with low hysteresis. This design is ideal for systems requiring both high power and high precision.
Control & Feedback
The valve features integrated trigger electronics (indicated by the absence of /K0). It accepts a standard ±10 V DC command signal and provides LVDT spool position feedback for closed-loop control. The /Z4 suffix confirms it comes with a ready-to-use plug and socket connection.
Flow Characteristic (370M)
The M characteristic provides a progressive flow curve. At small spool openings, it offers fine metering for precise slow-speed control, while at larger openings, it delivers high flow for rapid actuator movement.
Fail-Safe Behavior
This is a single-side actuated valve with spring return. In the event of power failure or signal loss, the spring returns the spool to a defined 4/4 fail-safe position (typically all ports blocked).
Critical Installation Notes
Pilot Oil Supply: As a pilot-operated valve, it requires a clean, stable pilot oil supply (port X). The minimum pilot pressure is typically 20 bar.
Cleanliness: Maintain high oil cleanliness (recommended ISO 4406 18/16/13 or better) due to the sensitive servo-quality pilot stage.
Mounting: Use the correct ISO 4401-08 (NG25) subplate to ensure proper port alignment and sealing.
Contact Person: Mr. liyun
Tel: +8615280488899