Safety valve for water supply system
First Claim
1. A safety control valve operably attached to a hot water heater comprising:
- a valve body having a flow passage therethrough comprising a pair of laterally spaced vertical flow channels and a top flow cavity connecting said vertical flow channels with top ends of said flow channels opening into a flat bottom face of said top flow cavity forming a valve seat, a closure flap mounted in said top cavity and spring biased downward against said flat bottom face to close the valve, a central cylindrical cavity extending vertically between said top flow cavity and the bottom of the valve body with a thin elastic diaphragm attached to a portion of the valve body and extending therefrom across and closing the top end of the cylindrical cavity and a solenoid mounted on the bottom of the valve body concentric with said central cylindrical cavity, an actuating pin mounted within said cylindrical cavity and solenoid, said actuating pin being spring biased upwardly such that when the solenoid is not activated the pin moves upwardly extending the diaphragm and pushing the closure flap upwardly to open the valve and when the solenoid is activated the pin is pulled downwardly relaxing the diaphragm and thereby allowing the closure flap to move downwardly and close the valve, connector means for connecting said vertical flow channels to a water pipe, manual releasable locking means for locking said actuating pin in a closed position comprising a horizontally slidable pin spring biased against said actuating pin and being adapted to enter a recess in the side of said actuating pin when the actuating pin is moved downwardly to the closed position and being adapted to be released from the actuating pin to permit the actuating pin to be moved upwardly to an open position and means for detecting a water leak in the hot water heater and thereby activating the solenoid to move the actuating pin downwardly to permit the closure flap to be moved to the closed position.
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Abstract
A safety control valve for a domestic water supply system is described. It includes a valve body having a flow passage therethrough comprising a pair of laterally spaced vertical flow channels and a top flow cavity connecting these vertical flow channels. The top ends of the spaced flow channels open into a flat bottom face of the top flow cavity, which flat face forms a valve seat. A closure flap is mounted in the top cavity and is spring biased downwardly against the flat bottom face to close the valve. A central cylindrical cavity extends vertically between the bottom of the top flow cavity and the bottom of the valve body with a thin elastic diaphragm closing the top end of the cylindrical cavity. A solenoid is mounted on the bottom of the valve body concentric with the central cylindrical cavity. An actuating pin is mounted within the cylindrical cavity and solenoid, this actuating pin being spring biased upwardly such that when the solenoid is not activated the pin moves upwardly extending the diaphragm and pushing the closure flap upwardly to open the valve and when the solenoid is activated the pin is pulled downwardly thereby allowing the closure flap to move downwardly and close the valve. Connector means are provided for connecting the vertical flow channels to a water pipe and locking means are provided for locking the actuating pin in closed position. Finally, there is included a probe means for detecting a water leak and thereby activating the solenoid.
22 Citations
2 Claims
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1. A safety control valve operably attached to a hot water heater comprising:
a valve body having a flow passage therethrough comprising a pair of laterally spaced vertical flow channels and a top flow cavity connecting said vertical flow channels with top ends of said flow channels opening into a flat bottom face of said top flow cavity forming a valve seat, a closure flap mounted in said top cavity and spring biased downward against said flat bottom face to close the valve, a central cylindrical cavity extending vertically between said top flow cavity and the bottom of the valve body with a thin elastic diaphragm attached to a portion of the valve body and extending therefrom across and closing the top end of the cylindrical cavity and a solenoid mounted on the bottom of the valve body concentric with said central cylindrical cavity, an actuating pin mounted within said cylindrical cavity and solenoid, said actuating pin being spring biased upwardly such that when the solenoid is not activated the pin moves upwardly extending the diaphragm and pushing the closure flap upwardly to open the valve and when the solenoid is activated the pin is pulled downwardly relaxing the diaphragm and thereby allowing the closure flap to move downwardly and close the valve, connector means for connecting said vertical flow channels to a water pipe, manual releasable locking means for locking said actuating pin in a closed position comprising a horizontally slidable pin spring biased against said actuating pin and being adapted to enter a recess in the side of said actuating pin when the actuating pin is moved downwardly to the closed position and being adapted to be released from the actuating pin to permit the actuating pin to be moved upwardly to an open position and means for detecting a water leak in the hot water heater and thereby activating the solenoid to move the actuating pin downwardly to permit the closure flap to be moved to the closed position. - View Dependent Claims (2)
Specification
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- Resources
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Current AssigneeGeorge P. Staranchuk
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Original AssigneeGeorge P. Staranchuk
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InventorsStaranchuk, George P.
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Primary Examiner(s)Walton, George L.
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Application NumberUS08/764,440Time in Patent Office362 DaysField of Search122/504, 122/504.2, 122/507, 137/312, 251/95, 251/111, 251/113, 251/129.15, 251/129.17, 200/61.04, 200/61.05, 200/182, 200/190, 307/118, 351/118, 361/178US Class Current137/312CPC Class CodesD06F 39/081 Safety arrangements for pre...Y10T 137/5762 With leakage or drip collec...
