The Sun Hydraulics CKIBXAN is a high-performance, pilot-to-open check valve designed for reliable load-holding applications in hydraulic systems. This cartridge-style valve allows free flow from the valve port (port 1) to the work port (port 2), while blocking flow in the opposite direction. The check is opened to allow reverse flow when sufficient pilot pressure is applied at port 3. Its robust construction and floating design ensure minimal internal leakage and superior performance under high pressure, making it an ideal choice for preventing cylinder drift and ensuring system safety and stability.