This hydraulic valve insert controls the flow and pressure within the hydraulic system of a self-propelled forage harvester. It is installed in the valve block, where it modulates fluid delivery to downstream actuators such as the feed rolls and spout controls. A worn or contaminated insert can cause erratic actuator movement or a loss of holding pressure. As an original component, its internal orifice and spring characteristics match the factory calibration, ensuring the valve block responds as designed.