Streamline your hydraulic control with the THM SD4 Series, a simple, high-performance monoblock directional control valve designed for maximum reliability in a compact frame. This single-section valve is engineered for versatility, performing flawlessly in both open-center and closed-center hydraulic systems. With a steady flow rate of 45 L/min and a rugged operating pressure of 250 bar, the SD4 is the ideal solution for equipment manufacturers and operators who require precision control without the bulk of multi-sectioned valve banks. Its modular spool design and flexible control options make it one of the most adaptable small-frame valves in the THM lineup.

Core Technical Specifications:-

• Valve Architecture: Single-Section Monoblock Design
• Maximum Operating Pressure: 250 bar
• Nominal Flow Rate: 45 L/min
• Spool Diameter: 16 mm (Interchangeable)
• System Compatibility: Open Center and Closed Center

Key Features & Engineering Advantages:-

• Ultra-Compact Single-Section Profile: The monoblock casting is specifically designed to save space, making it perfect for small-scale mobile machinery and tight industrial enclosures where a multi-spool bank is not required.
• Interchangeable Spool System: Features high-precision 16 mm diameter spools that are fully interchangeable. This allows users to easily swap or replace spools to change valve functionality (e.g., from double-acting to motor spool) without replacing the entire valve body.
• Integrated System Safety: Every SD4 unit is fitted with a built-in main pressure relief valve, providing immediate protection for your pump and actuators against pressure spikes and mechanical overloads.
• Leak-Proof Reliability: The monoblock construction eliminates the need for tie rods and O-rings between sections, drastically reducing the risk of external leaks and ensuring consistent volumetric efficiency over thousands of cycles.

Ideal Industry Applications:-

The lightweight yet powerful design of the SD4 Series makes it the go-to valve for:

• Compact Construction Equipment: Controlling small loaders, mini-excavators, and auxiliary attachments.
• Agricultural Implements: Managing wood splitters, small tractor attachments, and nutrient spreaders.
• Material Handling: Perfect for small-scale hydraulic lifts, tail lifts on delivery trucks, and compact forklifts.
• Specialized Utility Vehicles: Directing flow for small winches, snowplows, and landscaping equipment.