초록 ▼

The invention is a shut-off device for a gas or liquid conduit that closes the conduit upon receiving a signal from a leak detector. The shut off device is a spring biased full flow ball valve positioned in the fluid conduit that closes upon receiving a signal from the leak detector that a fluid lea

The invention is a shut-off device for a gas or liquid conduit that closes the conduit upon receiving a signal from a leak detector. The shut off device is a spring biased full flow ball valve positioned in the fluid conduit that closes upon receiving a signal from the leak detector that a fluid leak has occurred. The detector may be a conductivity detector for liquids or a specific gas detector, and may be hard wired or remote signaling in operation. Multiple detectors may be used in the system. An audible alarm is also activated when a leak is detected.

대표청구항 ▼

[ I claim:] [1.] An apparatus for interrupting flow of fluid in a fluid-carrying conduit upon detection of a dangerous condition associated with said fluid, comprising;a) a full flow valve member positioned in said fluid-carrying conduit, said valve member having external mechanical operating means

[ I claim:] [1.] An apparatus for interrupting flow of fluid in a fluid-carrying conduit upon detection of a dangerous condition associated with said fluid, comprising;a) a full flow valve member positioned in said fluid-carrying conduit, said valve member having external mechanical operating means for orientating said valve member between a full open orientation and a full closed orientation;b) biasing means secured to said valve member external mechanical operating means, said means biasing said valve member toward a full closed orientation;c) releasable latch assembly means secured to said valve member external mechanical operating means, said assembly latching said valve member in a full open orientation, said releasable latch assembly means comprising a manual release lever member fastened to said valve member external mechanical operating means, said manual release lever member latching said valve member in a full open orientation, said manual release lever member magnetically connected to a magnetic latch means secured to a solenoid actuator, said solenoid actuator responding to a signal from a detector means to disconnect said magnetic latch means from said manual release lever member, thereby allowing said valve member to move to a full closed orientation; andd) detector means in communication through communication means with said releasable latch assembly means, said detector means, upon sensing a dangerous condition associated with said fluid, signaling said releasable latch assembly through said communication means, thereby releasing said valve member external mechanical operating means attached thereto, allowing said biasing means attached to said operating means to move said valve member to a closed orientation, thereby interrupting fluid flow in said fluid carrying conduit.