This valve end piece controls the flow of material within the threshing mechanism of a self-propelled forage harvester. It is positioned at the outlet of a pneumatic or mechanical conveying channel, directing the crop stream into the next stage of processing. A worn or damaged end piece can cause material blockages or uneven distribution, reducing throughput and increasing cleaning time. The original component is cast to match the internal profile of the discharge housing, ensuring the crop flow path remains unobstructed.