In this project, the Rotary Valve design was carried out with the aim of achieving uniform material transfer, effective sealing and stable performance under continuous operating conditions. In the engineering process, the body and rotor geometry, power transmission system, bearing placement, drive mechanism and sealing components were designed in such a way that, while reducing leakage and pressure drop, the durability of the equipment in industrial environments is increased. All parts were modeled and assembled in 3D and their manufacturability, assembly and serviceability were evaluated before production. The result of this project is to provide an engineered and reliable design that can be used in powder and granular material transfer systems with high efficiency and minimal need for repairs.