THM- 4WRLE – Proportional Valve
Achieve absolute, servo-class motion control and maximize your machine's energy efficiency with the THM 4WRLE Series Proportional Directional Valve. Engineered as a high-end electro-hydraulic solution for contemporary automation, this 2-stage, pilot-operated valve delivers unparalleled operational precision. Driven by a state-of-the-art pilot valve with a spool/sleeve architecture and an integrated digital controller (OBE - On-Board Electronics), it provides highly dynamic, closed-loop position feedback. Capable of seamlessly managing flow across sizes 10 to 27 while sustaining relentless maximum operating pressures of 350 bar, the 4WRLE Series guarantees ultra-precise, hysteresis-free control over position, speed, and pressure in the most demanding civil, road, and industrial hydraulic systems.
Core Technical Specifications:-
- Valve Architecture: High-Response 2-Stage Proportional Directional Valve
- Model Series: THM 4WRLE (Component Series 4X)
- Standard Sizes: Size 10 to 27 (NG10 to NG27)
- Maximum Operating Pressure: Up to 350 bar
- Control Technology: Electrical Position Feedback with Integrated Digital Controller (OBE)
- Mounting Standard: Subplate mounting directly corresponding to ISO 4401
- Electrical Connection: Standard 6P+PE
Key Features & Engineering Advantages:-
- Servo-Class Pilot Precision: The advanced pilot valve utilizes a specialized spool and sleeve structure, delivering servo-valve levels of performance. This ensures high response sensitivity and exceptionally little hysteresis, allowing for rapid, highly precise fluid metering.
- Integrated Digital Electronics (OBE): Features a state-of-the-art digital controller built directly into the unit. This drastic reduction in external wiring ensures flawless, plug-and-play electrical-to-hydraulic synchronization and entirely eliminates the need for bulky amplifier cards in your control cabinets.
- Closed-Loop Position Feedback: Both the pilot and main stages utilize electrical position feedback, constantly monitoring and correcting the spool's physical state. This guarantees your heavy actuators receive strictly linear, load-independent flow, regardless of violent system fluctuations.
- Triple-Threat Flexibility: Engineered to be the ultimate multi-purpose control element, the 4WRLE effortlessly manages exacting position control, variable speed regulation, and precise pressure scaling all from a single, robust unit.
- Fail-Safe Main Spool Architecture: The control spool of the main stage is meticulously engineered to sit in a spring-centered central position and/or an offset position. In the event of a power loss, the spool instantly defaults to a safe mechanical state, locking massive cylinders to protect the job site.
Ideal Industry Applications:-
The servo-level responsiveness, integrated digital control, and heavy-duty 350-bar resilience of the 4WRLE Series make it the ultimate automated brain for:
- Heavy Civil & Road Construction Machinery: Providing the complex, highly dynamic motion control required for automated leveling screeds, sensor-driven steering systems, and precision auxiliary attachments on large-scale asphalt pavers, concrete slipformers, and road milling machines.
- Large-Scale Industrial Automation: Delivering the exact, repeatable fluid routing needed for complex motion profiles on high-capacity plastic injection molding machines, deep-drawing equipment, and heavy metal-forming presses.
- Advanced Earthmoving Equipment: Regulating the ultra-precise, variable-speed boom and bucket circuits on modern, drive-by-wire high-capacity tracked excavators and trenchers.
- Mobile Hydraulics & Material Handling: Ensuring flawlessly smooth, perfectly metered lifting and telescoping maneuvers on heavy logistics handlers and industrial cranes, entirely preventing load shifting.
