Supply of service water incorporated in pump intake line

摘要

The water supply system for a building uses mains supply water and rainwater collected off the roof. A combination of a check valve (6) between the pump (7) and a feedback tank (5) of a water supply system and a 3/2 - way valve (9) is provided in the intake line of the pump. Preferably, at least the components pump, pump controller (11), back feed pump, check valve, 3/2 -way valve, back feed valve (3) and controller (12) are positioned on a mounting plate (1) with a cover. The unit may have connections for supply of fresh water, service water and rainwater, as well as an emergency overflow.