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System for excercising the control valve for a water shut-off valve

  • US 6,374,846 B1
  • Filed: 01/19/2001
  • Issued: 04/23/2002
  • Est. Priority Date: 01/19/2001
  • Status: Active Grant
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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