The discharge flow rate of the drainage pipe in the siphon drainage system is significantly greater than that of the drainage pipe with the same diameter in the gravity drainage system. In other words, to discharge the same volume of rainwater, the diameter of the drainage pipe in the siphon drainage system needs to be smaller than that in the gravity drainage system.The siphon drainage system is essentially a multi-compartment pressure flow rainwater drainage system. Therefore, the underground pipes required are significantly less compared to gravity drainage systems.The system primarily operates through a unique rain gutter design. During the early stages of rainfall, when the roof rainwater level does not exceed the height of the rain gutter, the entire drainage system functions similarly to a gravity flow drainage system. As the rainfall continues and the roof rainwater level surpasses the rain gutter height, the scientifically designed vortex prevention rain gutters control the flow rate of rainwater entering the gutters and adjust the flow pattern to minimize vortexes, significantly reducing the amount of air carried into the drainage system. This results in the drainage pipes being in a full-flow state. Utilizing the height of the building's roof and the potential energy of the rainwater, as the continuous flow of rainwater passes through the suspended rainwater pipes into the vertical pipes and falls, an siphon effect is formed, creating the maximum negative pressure in the pipe section. The roof rainwater is then evacuated to the outside at a higher velocity due to the suction effect of the negative pressure within the pipes. The 90-degree sloped tee is a junction piece where the main and branch pipes intersect at 90 degrees, with a visible 45-degree slant on the vertical plane, used for connecting vertical and horizontal pipes. The straight tee, also at a 90-degree intersection, does not have a noticeable 45-degree slant on the exterior, but the interior wall features a curve following the water flow, used for connecting the water bend branch pipes with horizontal pipes.***
