Nachi SA-G01-A3X-D2-E31 Hydraulic solenoid valve. Condition is “For parts or not working”. The Nachi SA-G01 is a standard 2-Position, 4-Way, Solenoid Operated Directional Valve. The movable iron core of the wet type solenoid is immersed in oil, which keeps it lubricated and cushions it from impact and vibration, ensuring very long life. The wet-type solenoid valve also provides very low core switching noise for quiet operation.