The siphon drainage system is mainly composed of rainwater head, fastening systems,polyethylene 
pipe and the corresponding design software.

Advantage of system:
Compared with the traditional gravity drainage system, the siphon drainage system has advantage:
1, pipe without slope.
2, less material.
3, the construction are greatly reduced.
4, reduction of pipe diameter.
5, save installation space;
6, pipe has self-cleaning function.
7, design, construction is simple and quick.
8, widely applicable to various purposes buildings.

Product features
1, black PE pipeline uv resistant, ageing resistance, long service life of 50 years.
2, smooth inner wall, and does not change with time, small frictional resistance,save energy, 
the pressure loss about 30% smaller than the steel tube,can choose smaller than steel pipe diameter.