HD – 4WRZE – Proportional Directional Valve
Master the movement of your heaviest industrial loads with the ultimate blend of brute force and digital precision: the HD 4WRZE Series. Available through Thm Hydraulics, these valves are pilot-operated, 2-stage directional controls actuated by high-performance proportional solenoids. Engineered for massive hydraulic systems, the 4WRZE series allows your digital control network to infinitely govern both the direction and the magnitude of fluid flow. Capable of managing extreme operating pressures up to 350 bar and monumental flow rates up to 1600 L/min, this valve features On-Board Electronics (OBE) for a simplified, "plug-and-play" integration into your modern automation architecture.
Core Technical Specifications:-
- Component Architecture: Pilot Operated 2-Stage Proportional Directional Valve
- Model Type: HD-4WRZE (Size 10 and larger)
- Control Intelligence: Integrated Electronics (OBE - On-Board Electronics)
- Maximum Operating Pressure: Up to 350 bar
- Maximum Flow Capacity: Up to 1600 L/min
- Actuation: Proportional Solenoid (Pilot Operated)
Key Features & Engineering Advantages:-
- Integrated OBE Control: Features factory-calibrated On-Board Electronics (OBE). This drastically reduces wiring complexity, eliminates external amplifier cards in your control cabinet, and provides superior noise immunity for clean, high-fidelity signal transmission.
- Dual-Stage Control Logic: Combines a highly responsive proportional pilot valve with a robust main stage. This configuration effortlessly commands massive fluid forces (up to 1600 L/min) using a low-power, precise electrical input signal.
- Monumental Flow & Pressure Handling: Forged to withstand the most intense industrial environments, comfortably managing 350 bar pressure cycles and high-volume flow venting without excessive pressure drop or heat generation.
- Spring-Centered Failsafe: The main spool is spring-centered, ensuring that in the event of a power failure or signal loss, the valve immediately returns to a safe neutral position, preventing dangerous actuator drift.
- Unified System Source: Both the high-performance 2-stage valve and the integrated proportional electronics are sourced from a single supplier, guaranteeing perfect signal-to-flow calibration and eliminating commissioning guesswork.
- Manual Override Capability: Equipped with a mechanical manual override, allowing technicians to actuate the valve safely during setup, maintenance, or emergency power-down scenarios.
Ideal Industry Applications:-
The integrated electronics and 1600 L/min flow capacity make the HD 4WRZE Series the premier choice for:
- Heavy-Duty Industrial Presses: Controlling the high-speed approach and precisely modulating the intense pressing forces required for metal forging, stamping, and extrusion.
- Steel & Paper Rolling Mills: Governing the rapid, high-force adjustments required for mill stand positioning, tension control, and active vibration damping.
- Large-Scale Marine & Offshore: Managing the dynamic, high-power requirements of heavy-duty winches, steering gears, and massive ship-lift systems.
- Civil Engineering & Infrastructure: Providing primary directional control for massive hydraulic dam gates, bridge movement systems, and tunnel boring machinery.
Why Choose the HD 4WRZE Series?
- "Plug-and-Play" High Power: By integrating the electronics onto the valve body, you slash installation time and cabinet space requirements while gaining superior proportional accuracy.
- Master Massive Loads with Finesse: Proportional control eliminates the "jerk" and hydraulic shock common with standard "on/off" valves, protecting your structure and extending the life of your pumps, cylinders, and seals.
- Built for Continuous Duty: Forged from high-strength materials and equipped with a robust pilot stage, the 4WRZE thrives in continuous, 24/7 high-pressure industrial environments.
