Sun Hydraulics CKCD-XAN Pilot-Operated Check Valve

Technical engineering specifications for the Sun Hydraulics CKCD series pilot-to-open check valve cartridge. This valve features a sealed pilot piston, hardened steel seat, and non-vented construction ensuring zero leakage in the checked condition. It allows free flow from port 2 to port 1 (valve to load) and blocks flow from port 1 to port 2 until pilot pressure is applied at port 3. The floating style construction minimizes internal binding caused by installation torque or cavity machining variations. Designed for Series 1 cavities (T-11A) with a nominal flow capacity of 15 GPM (60 L/min). Suitable for load holding and motion control circuits requiring reliable pilot-to-open functionality. Material composition includes a steel body with Buna-N seals (N designation) and hardened steel internal components. The cartridge is physically interchangeable with Sun counterbalance valves of the same frame size and cavity. Maximum operating pressure rated at 5000 psi (350 bar). Configuration code XCN denotes standard pilot control, C cracking pressure, and Buna-N seals.