Water shut-off valve and control system

Details Water shut-off valve and control system Water shut-off valve and control system

1997-04-25

1998-08-18

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374875, F16K 3112

Patent

active

057946531

ABSTRACT:
A water distribution system protects against water leaks by shutting off the water if a pre-determined flow is detected for more than a set period of time. The time may be changed to any value between one minute and four or more hours. When the pre-determined flow continues past the set time, the main shut off will activate for two seconds, closing the system.

REFERENCES:
patent: 3850199 (1974-11-01), Stone et al.
patent: 4518955 (1985-05-01), Meyer
patent: 4630799 (1986-12-01), Nolan et al.
patent: 4735231 (1988-04-01), Jacquet
patent: 4736736 (1988-04-01), Britton et al.
patent: 4794947 (1989-01-01), Kuramochi
patent: 5007453 (1991-04-01), Berkowitz et al.
patent: 5083744 (1992-01-01), Reinicket et al.
patent: 5086806 (1992-02-01), Engler et al.
patent: 5474105 (1995-12-01), Able et al.

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