1. Installed in existing or newly constructed rainwater inspection wells.
2. Use the water level changes in the pipeline network and equipment well chamber to achieve equipment opening and closing.
3. No need for power connection, easy installation, operation and maintenance .
4. Sediments, floating debris, and other pollutants in rainwater are intercepted in the rainwater diversion well through pollution removal equipment such as HydroBoard B and HydroBoard F-I.
5. Can add a check design to avoid situations such as sewage back flow.