8G4900G00631 is a precision aerospace component compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine hydraulic control systems.It acts as a high-performance hydraulic relief valve, a core pressure-regulating component for MRO replacement. It precisely controls and stabilizes hydraulic system pressure, automatically relieves excess pressure to avoid overloading, prevents damage to servo valves, actuators and precision hydraulic components, and ensures responsive, safe operation of engine actuation and variable geometry systems under extreme flight conditions.Made of aviation-grade corrosion-resistant alloy with a precision pressure-adjusting mechanism, it resists high pressure and hydraulic fluid erosion, working stably at -55℃ to 240℃. Weighing 0.18kg, it features compact structure, accurate pressure response, leak-proof sealing and standardized ports, enabling convenient installation and reliable long-term use. It is a critical component to guarantee hydraulic system safety and overall engine operational reliability.