Sun Hydraulics GBY-OBJ4-A2 Directional Control Valve

Sun Hydraulics GBY-OBJ4-A2 Directional Control Valve is a cartridge-style valve designed to steer hydraulic flow within multi-port circuits. This model leverages Sun’s cartridge architecture, enabling installation into standard cavities for compact, modular hydraulic assemblies. Directional control valves from Sun are rated up to 5000 psi (350 bar) and support flow rates up to 120 gpm (480 L/min), with configurations spanning 2-, 3-, 4-, and 6-way layouts depending on the model. The GBY-OBJ4-A2 variant can be configured with an integral pilot control cavity as an option and is available with features such as position indication and industry-standard cavities for broad interoperability. Practically, this type of valve shifts pressurized fluid between ports to control actuators, delivering precise direction of motion for cylinders and other hydraulic components, and enabling controlled sequencing, speed, and load management in industrial or mobile systems. It suits applications requiring a compact, modular valve package that fits standard cavity interfaces and can be paired with electro-proportional or pilot-operated control schemes for enhanced control fidelity. In short, the GBY-OBJ4-A2 provides reliable, cartridge-based directional control within a familiar Sun platform, designed to integrate with Sun cavities and optional pilot or indication features to match specific system needs.