Product Overview

The Rexroth ZDB 10 VB2-4X/315V (Material No. R900409956) is a direct-operated pressure relief valve from the proven ZDB series, designed for precise system pressure limitation and safe overload protection in industrial hydraulic circuits. As a pilot-operated pressure control valve, it operates on a balanced spool principle: system pressure acts on the valve spool against an adjustable spring force, and when the set pressure is reached, the spool shifts to open a controlled flow path from the pressure line to the tank port, thereby regulating and limiting pressure. The “315V” designation indicates a pressure rating of 315 bar with a specific adjustment and connection variant, making this valve suitable for high-pressure hydraulic systems requiring reliable, repeatable pressure control. Its robust housing and precision-machined spool deliver stable performance across demanding duty cycles.

Technical Specifications

Engineering Features & Advantages

• Precision Performance: Balanced spool design ensures accurate and repeatable pressure limitation with minimal hysteresis and stable response across the full operating range.
• Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened, precision-ground internal components that resist wear and contamination-related failure.
• Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement without modification to existing manifolds or piping.
• High-Pressure Capability: Rated to 315 bar, suitable for high-pressure hydraulic systems requiring dependable overload protection and pressure regulation.

Typical Industrial Applications

This pressure relief valve is widely deployed in plastic injection molding machines, metallurgical presses, construction and marine hydraulic systems, and CNC machine tools, where precise pressure control and reliable system protection are essential for safe and efficient operation.

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