The Sun PBDBKAN is a high-performance, screw-in cartridge-style pilot-to-open check valve. It is designed to allow free flow from the valve port (port 2) to the load port (port 1) while blocking flow in the reverse direction. The blocked flow can be released by applying pilot pressure to port 3. This valve is commonly used in load-holding applications to prevent drift and provide reliable positional control. Its robust construction ensures durability and consistent performance in demanding hydraulic systems. The PBDBKAN fits into the standard Sun T-11A cavity, making it a versatile choice for a wide range of manifold designs.