Water e.g. rain water, retention device for e.g. terrace house, has connections including connecting coupling that is connected on rain water system and including outlet for passage of suction pipe of pump

摘要

The device has a series of straight and angular modules (18-1-18-5) including flanges (24, 28) for sealingly connecting the modules and forming a desired geometry. Open-ended shutters (34) e.g. discs, are arranged at ends of the assembled modules on the same flanges. Connections (36) has a connecting coupling (38) that is connected on a rain water system and has an outlet (40) for the passage of a suction pipe of a pump.