Patent ID: 8844067

Claim:
A device to shut-off a water supply to a water tank of a toilet at a toilet fill valve having a water inlet passage and a water level valve, said fill valve being disposed within said water tank, said device comprising: a diverter in fluid communication between said water inlet passage and said water level valve of said fill valve, said diverter diverting said water inlet passage and a return line to a first fitting; a shut-off valve having a housing containing an inlet port adapted for fluid connection with said water inlet passage of said first fitting, an outlet port adapted for fluid connection with said return line of said first fitting, a valve mechanism, a trip mechanism, and a trip circuit electrically connected with said trip mechanism; said trip circuit including at least one trip sensor input and a power source, said trip circuit adapted to actuate the valve mechanism; at least one trip sensor adapted to sense a fault condition, each trip sensor selectively electrically connected to said trip sensor input; whereby with said shut-off valve fluidly connected with said diverter of said fill valve, when said trip circuit detects a fault condition on any of said at least one trip sensors, said trip circuit actuates said valve mechanism to close and wherein said valve mechanism including a valve housing rotationally confining a first disk and a second disk, each disk having at least one aperture therethrough, a compression spring holding said second disk coaxially against said first disk, said at least one aperture in each disk when aligned allowing fluid communication between said inlet and outlet ports; and wherein said trip mechanism includes an axial shaft fixed coaxially with said second disk and an actuator to rotate said axial shaft as directed by the trip circuit.