Precision-engineered ZHENYUAN Hydraulic Proportional Directional Valve for industrial fluid control systems. High-performance 4WRA/4WRE series with hardened steel spools and CNC-machined aluminum body ensures leak-free operation under 350 bar pressure. Electro-hydraulic proportional technology delivers accurate flow control within ±0.5% repeatability. Compatible with ISO 4401 mounting patterns and multiple coil voltages (12/24VDC). Ideal for injection molding machines, mobile hydraulics, and automated production lines requiring variable speed control. OEM-grade construction with IP65 protection for harsh environments. Direct replacement for Bosch Rexroth valves with identical hydraulic schematics. Includes integrated electronics for plug-and-play installation. Bulk pricing available for fleet maintenance and factory automation projects.