The Sun DFEA8DN is a high-performance, solenoid-operated, 2-way, normally closed, poppet-type, screw-in hydraulic cartridge valve. In its de-energized state, this valve functions as a check valve, allowing free flow from port 1 to port 2, while blocking flow from port 2 to port 1. When the coil is energized, the poppet lifts to open the flow path from port 2 to port 1. Its poppet-type construction ensures minimal leakage, making it an excellent choice for load-holding, blocking, and various mobile or industrial hydraulic circuit applications requiring reliable performance and control.