The Sun CVEV-XCV is a high-performance, pilot-to-open check valve with a fixed setting, commonly known as a counterbalance valve. It is designed to control overrunning loads by allowing free flow from the directional valve (port 2) to the load (port 1) while blocking flow in the opposite direction until pilot pressure is applied at port 3. This cartridge valve is engineered for exceptional reliability and smooth motion control in demanding hydraulic applications, preventing actuator runaway and ensuring secure load holding. Its robust construction makes it suitable for a wide range of industrial and mobile hydraulic systems.