Disconnector for drinking water distribution system

Details Disconnector for drinking water distribution system Disconnector for drinking water distribution system

1980-11-14

1982-06-01

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137218, 137538, F16K 1502

Patent

active

043322743

ABSTRACT:
Disconnector intended to be inserted in a drinking water distribution system so as to prevent, in the case of a pressure drop for any reason whatsoever, the water which is downstream and may be considered as polluted, from being fed-back upstream beyond the disconnector.
The passage of the water through this disconnector from upstream to downstream and the prevention of feedback of polluted water from downstream to upstream are controlled by a hollow piston closed at both its ends slidable between two end positions under the effect of the greater of the upstream or downstream pressures, whose cylindrical wall has therethrough upstream and downstream apertures, in combination with seals whose lips are applied to said cylindrical wall and which according to the position of the piston, allow the water to pass through these apertures or not.

REFERENCES:
patent: 2005813 (1935-06-01), Thorsen
patent: 2831493 (1958-04-01), Richmond
patent: 2920645 (1960-01-01), Younghaus

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