Domestic water system, for dwellings for one or more families, in which drainage water is reused

摘要

In order drastically to reduce domestic water demand, little-soiled drainage water from bath tubs 18, washing machines 25, etc. is channelled into a drainage-water tank 1 and is pumped from there into the WC flushing cisterns 19. A suction and pressure pump 2 is connected to a plurality of electrically connected three-way valves 4, 6, 14, 16, 32 in a pipe system in such a way that the pump 2 has a drawing-off and a forcing-up effect with the same direction of rotation 7. Electrical switching devices ensure that the various pumping operations occur automatically. <IMAGE>