Introduction siphon
 
       Siphon rainwater roof drainage system is to use roof rainwater funnel dedicated to achieve separation of gas and water. The beginning due to gravity, so that rain water pipes produced are empty, when the tube was in the water flow when the pressure to form a siphon phenomenon, continuous drainage, rainwater eventually reach full flow state museum. In the rainfall process, as a result of continuous siphonage effect of the whole system to rapid discharge of rainwater on the roof. Siphon drainage system pipes are pressure state of full flow design, rainfall suspension control can be achieved without the laying of the gradient, when the siphon effect produced when a high flow velocity, a better role Ziqing. Siphon drainage system uses high-density polyethylene HDPE pipe, the pipe can withstand the pressure of the larger red and will not rupture due to bending, breaking, also has the corrosion resistance, the resistance range of extreme temperatures, and in -30 ℃ -- - 100 ℃, while the tube itself is light weight, convenient construction, can greatly enhance the effectiveness of the installation.
 
Siphon system advantages:
       1, the proportion of power system small diameter 1 / 2 to 2 / 3.
       2, no need for cross-slope control.
       3, the Big Dipper points roofing was flexible.
       4, can be reduced with the reduced requirements of the roof hole reserved.
       5, to a flexible pipe can be set based on a variety of design requirements.
       6, matching piping materials may be flexible.
       7, can control the unknown and the water depth in the Gutter.
       8, the flow speed pipelines with self-cleaning function.