System to automatically drain filter backwash water

Details System to automatically drain filter backwash water System to automatically drain filter backwash water

1991-07-12

1992-09-29

Dawson, Robert A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Filter cleaning

137107, 137568, 166 53, 166 751, 2102571, 2104163, 210418, G05D 700, B01D 35157, E21B 3416

Patent

active

051511754

ABSTRACT:
A system for providing filtered well water to a building includes a filter, an accumulator downstream of the filter, and an automatic backwash valve between the filter and the well. When the well pump is deactivated, the accumulator discharges its contents back through the filter, towards the valve, which contains a shuttle that automatically diverts the backwash water to a drain line. The valve also prevents contaminants from being siphoned into the system through the drain line.

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patent: 4477343 (1984-10-01), Tucker
patent: 4549961 (1985-10-01), Bellemann et al.
patent: 4631126 (1986-12-01), Keith et al.
patent: 4806217 (1989-02-01), Rosenberg

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