This product offers manufacturing and control precision that leads the industry among comparable products, and is suitable for a wide range of harsh working conditions. The valve integrates a pilot-operated relief valve and a solenoid directional control valve into a single unit, adopting a two-section concentric pilot cone valve structure with a spool-type main valve element. The pilot control ensures high pressure regulation accuracy and minimal pressure fluctuation. Even under high flow rates, it maintains extremely low pressure overshoot characteristics and excellent opening and closing performance.