Title
4WRLE Series Proportional Electro‑Hydraulic Directional Valve
Meta Short Description
4WRLE pilot‑operated proportional directional valve with integrated amplifier and spool position feedback, NG10/16/25, ISO4401 subplate mounting, ISO9001 & CE certified for high‑precision hydraulic motion control.
4WRLE Series Proportional Electro‑Hydraulic Directional Valve
Overview
The 4WRLE series are pilot‑operated proportional electro‑hydraulic directional valves with
integrated amplifier and built‑in spool displacement feedback. They convert electrical command signals into stepless adjustment of flow rate and direction for hydraulic actuators.
Available in nominal sizes NG10, NG16, NG25 with ISO4401 standard subplate mounting. Multiple pilot oil supply‑return configurations are optional: PT (internal supply & internal return), PY (internal supply & external return), XT (external supply & internal return), XY (external supply & external return). A wide selection of spool functions (E, E1, W6, W8, V, V1, Q3) supports diverse hydraulic circuit requirements.
Manufactured under ISO9001 quality system and CE certified, featuring low hysteresis, high repeat accuracy and fast response for precise closed‑loop motion control.
Key Features
- Nominal sizes: NG10, NG16, NG25; ISO4401‑07 standard subplate mounting
- Integrated proportional amplifier, built‑in spool position sensor for closed‑loop feedback
- Multiple pilot oil modes (PT / PY / XT / XY) for flexible system adaptation
- Various spool function options for different circuit logic
- Ultra‑low hysteresis＜0.1%, low return difference＜0.08%, high control sensitivity
- Fast dynamic response, excellent temperature stability
- Wide flow range, max working pressure up to 350 bar
- Robust industrial construction, long service life
- ISO9001 & CE certified
Technical Data
- Valve Type: Pilot‑operated proportional electro‑hydraulic directional valve
- Sizes: NG10, NG16, NG25
- Mounting: Subplate mounting conforming to ISO4401
- Max working pressure: P/A/B port up to 350 bar; T/Y port up to 250 bar
- Nominal flow: 100‑600 L/min (at Δp=10 bar)
- Hydraulic fluid: Mineral hydraulic oil per DIN 51524
- Fluid temperature: ‑20℃ ~ +70℃
- Viscosity range: 10‑800 mm²/s (preferred 20‑100 mm²/s)
- Required fluid cleanliness: ISO 4406 18/16/13
- Ambient temperature: ‑20℃ ~ +60℃
- Hysteresis: ＜0.1%
- Repeat accuracy: ＜0.08%
Applications
Perfect for high‑precision industrial equipment requiring stepless speed & direction regulation: hydraulic presses, injection moulding machines, metallurgical machinery, test benches, automated production lines and heavy‑duty motion‑control hydraulic systems.
Notes
- System oil filtration must meet ISO4406 18/16/13 requirement to extend valve service life
- Pilot supply‑return mode should be selected according to actual hydraulic system design
- Installation bolts and tightening torque shall comply with ISO4401 specification
