The spherical adjustable tuyere is a nozzle-type air outlet. The high-speed air flows through the nozzle of the valve body to the specified direction. The direction of the air jet can be easily adjusted in the conical space with the apex angle of 35°. The gas flow is also It can be adjusted by the valve opening and closing degree. It is used in the occasions of high-speed air supply or local cooling on the top of tall floors, such as airport waiting halls, indoor stadiums, hotel kitchens, etc.