What are the difference betwenn Tee barb fittings and the Y shape barbed tube connectors

The difference between T-shaped tee and Y-shaped tee mainly lies in the shape and fluid resistance, that is: T-shaped tee is a right-angle bend shunt, and Y-shaped tee is two parallel pipes going in one direction, so, relatively speaking, The fluid resistance of the Y-shaped tee is smaller than that of the T-shaped tee, allowing the fluid to flow smoothly