The star discharge valve is used at the discharge outlet of valves operating under vacuum conditions. It receives the discharged material at the top and acts as a conveying mechanism with its rotating blades, while also serving as a seal to prevent air intake from the discharge outlet during pneumatic conveying, ensuring the normal discharge of the valve. As a specialized discharge equipment, it plays a significant role in cleaning and washing operations. Therefore, it is necessary to summarize its characteristics to better understand and maintain the star discharge valve from all aspects, and to harness its capabilities.