Automatic shutoff valve

Details Automatic shutoff valve Automatic shutoff valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 5/06 (2006.01) F16K 5/20 (2006.01) F16K 31/02 (2006.01) F16K 37/00 (2006.01) G05D 7/06 (2006.01)

Patent

CA 2079028

AUTOMATIC SHUTOFF VALVE Robert C. Franklin ABSTRACT An automatic shutoff valve system for installation for instance in the water supply line to a hot water heater includes a sensor to detect leakage electrically by sensing moisture, and then shutting off the supply line in response. The valve mechanism includes a spring loaded ball valve normally latched in the open position which is unlatched and hence closes by the contraction of a BioMetal? wire which activates a torsion spring to rotate the ball valve. The valve is controlled by a micro- processor which includes self test features, and the valve system may operate for a year or more on battery power.

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