Classification by pipe diameter: equal diameter and reducing diameter Equal-diameter tees: As the name suggests, the diameters of the main and branch pipes of this type of tee are exactly the same. It is suitable for scenarios where the pipe diameter does not need to be changed when the fluid is divided or merged, ensuring a smooth transition of the fluid. Reducing Tee: When th... https://www.furdfittings.com/t-connection-in-piping-system-the-secret-of-tee-pipe-fitting/