System for excercising the control valve for a water shut-off valve
First Claim
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1. A water shut-off system, comprising:
- a normally open water shut-off valve;
a sensor for sensing a flow of water through the valve; and
a controller for actuating and closing the water shut-off valve in response to the sensor sensing a leak condition and for exercising the valve, by at least partially closing the valve and returning the valve back to a normal open position, from time to time independently of a need to control water flow through the water shut-off valve.
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Abstract
A water shut-off valve assembly comprises a valve that is moveable by a motor between open and closed positions. The water shut-off valve assembly is adapted to be connected to a water line. A sensor is also associated with a valve assembly for sensing leakages that occurred downstream from the valve assembly. A controller is operatively connected to the water shut-off valve assembly for actuating the electric motor which in turn actuates the valve therein. From time to time, the water shut-off valve assembly exercises or moves the valve within the valve assembly so as to prevent the valve from becoming clogged due to inactivity over a period of time.
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Citations
25 Claims
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1. A water shut-off system, comprising:
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a normally open water shut-off valve;
a sensor for sensing a flow of water through the valve; and
a controller for actuating and closing the water shut-off valve in response to the sensor sensing a leak condition and for exercising the valve, by at least partially closing the valve and returning the valve back to a normal open position, from time to time independently of a need to control water flow through the water shut-off valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of maintaining a valve in a water shut-off system, comprising:
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programming a controller for active and away modes;
associating the controller with a normally open valve; and
periodically closing and opening the water shut-off valve pursuant to a command from said controller in the absence of the detection of a leak event. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of controlling a flow of water through a water shut-off valve and exercising the water shut-off valve from time to time, comprising:
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sensing the flow of water through said water shut-off valve;
closing the water shut-off valve in response to detection of a leak event; and
exercising the water shut-off valve from time to time independently of a desire to control water flowing through the water shut-off valve.
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- 17. A method of maintaining a normally open valve in a water shut-off valve assembly so as to generally prevent the valve from clogging comprising exercising the normally open valve, by at least partially closing the valve and returning the valve back to a normal open position, from time to time independently of a need to control water flow through the water shut-off valve.
Specification