Automatic flushing system for shower bath has solenoid valve linked to central control unit or timer to prevent legionnaires disease

摘要

The automatic shower flushing system consists of a solenoid valve (7) located in a by-pass pipe (6) fitted between the hot water feed pipe (1) and the pipe (4) between the mixer unit (3) and shower head (5). Switched on, for example, for ten minutes twice a day by a central control unit (8) or timer, the system prevents the accumulation of stagnant water and reduces or eliminates the possibility of spreading legionnaires disease.