Water shutoff valve

Details Water shutoff valve Water shutoff valve

1984-09-24

1986-05-20

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

137456, 13762411, 13762412, 13762522, 251 16, 251305, 25112920, F16K 2116

Patent

active

045894353

ABSTRACT:
A water shutoff valve is disclosed in the preferred embodiment comprising a cylindrical body having a valve disk and water flow sensor therein. The sensor is operatively connected to a timer which automatically resets to zero upon interruption of water flow through the valve. The valve automatically closes upon continuous flow of water through the valve for a predetermined period of time, indicating a potential leak in the water supply line. The timer may be set for selected time intervals permitting the valve to remain open for short or long intervals as required.

REFERENCES:
patent: 340630 (1886-04-01), Simms
patent: 1678204 (1928-07-01), Srulowitz
patent: 1955661 (1934-04-01), Waldo
patent: 1956010 (1934-04-01), Diescher
patent: 3416560 (1968-12-01), Bruno
patent: 3417782 (1968-12-01), Mentnech
patent: 3831632 (1974-08-01), Young
patent: 4012673 (1977-03-01), Saarem
patent: 4180088 (1979-12-01), Mallett
patent: 4249565 (1981-02-01), Brust
patent: 4252088 (1981-02-01), Frisby

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