Fluid handling – With leakage or drip collecting
Patent
1998-09-09
2000-02-15
Walton, George L.
Fluid handling
With leakage or drip collecting
122504, 122507, 137 6811, 137392, 200 6104, 200DIG41, 307118, 361178, F16K 3102, H01H 2906, H01H 3518
Patent
active
060241160
ABSTRACT:
A valve assembly is operative for automatically shutting off both a water supply line and gas supply line to a gas-fired hot water vessel upon detection of water discharge, leak or overflow, from the water vessel. The valve assembly is connected in the water supply line and generally includes a valve body, a sliding valve member which is spring biased to a normally closed position, and a water softenable latch which maintains the valve member in an open position against the bias of the spring. The valve assembly is preferably positioned in a drip pan located under the water vessel such that water leaking from the water vessel will accumulate in the drip pan and submerge the valve assembly. Upon exposure to water accumulated in the drip pan, the water softenable latch at least partially softens and releases the valve member to move from its open position to its closed position to cut off water supply through the valve body. In connection with shutting off of the gas supply, a formation on the valve member engages a contact assembly as the valve member moves from the open to closed position. The contact assembly is wired into the power circuit of an electromagnetic valve actuator for a gas supply control valve. Engagement with the contact assembly temporarily disrupts the flow of power to the electromagnetic actuator causing the gas valve to be closed.
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Almberg Paul
Baragwanath Clyde
Fielding Steven
Miller Mark
Aquagard, LLC
Walton George L.
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