Patent ID: 7040343
Filing Date: 2006-05-09
Classification: F16K,F17C,Y10T

Abstract:
1. A valve assembly with low gas level signaling and controlling function comprising: a primary valve engaged wit an outlet of a tank, said primary valve being formed with a recess in which is fitted a plunger having an upper end extending upwardly through said primary valve to engage with a knob; a low level linking device comprising a tube connected with a bottom of said primary valve, a flexible rod having an end extending upwardly through said tube into said primary valve to engage with a piston and another end connected with an end of a float rod, said float rod being pivotally connected with a lower end of said flexible rod, a lower end of said float rod being connected with a float; and a release rod connected with a pusher which is mounted in said primary valve so that when said release rod is turned, said pusher will be moved by said release rod to go downwardly to push said rod to open said primary valve, said pusher having a lower end against a top of said piston; whereby when gas inside said tank decreases to a level where said float is moved to a lowest position, said float rod will push said flexible rod to move upwardly to lift said piston thereby blocking a passage from said outlet of said tank to an interior of said tank.