Domestic water valve assembly

Details Domestic water valve assembly Domestic water valve assembly

1997-08-04

1998-06-30

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137456, 1374875, F16K 1700

Patent

active

057719209

ABSTRACT:
A domestic water valve assembly protects against water leaks by closing a valve if a leak is detected. A leak is detected when a water flow rate falls below a predetermined low flow rate for a length of time longer than a predetermined time-out period or when the water flow rate exceeds a predetermined high flow rate. The predetermined high flow rate, low flow rate, and time-out period may be changed by an operator. When a leak is detected, a control system activates an electric motor to close a valve, the valve remaining closed until reset by the operator.

REFERENCES:
patent: 4518955 (1985-05-01), Meyer
patent: 5000224 (1991-03-01), Olson, Jr. et al.
patent: 5004014 (1991-04-01), Bender
patent: 5038820 (1991-08-01), Ames et al.
patent: 5076321 (1991-12-01), Terry
patent: 5251653 (1993-10-01), Tucker et al.
patent: 5409037 (1995-04-01), Wheeler et al.
patent: 5638847 (1997-06-01), Hoch, Jr. et al.

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