Patent ID: 6408452
Filing Date: 2002-06-25
Classification: E04H,F16K,Y10T

Abstract:
An automatic shut-off valve comprising a ball and a ball spring disposed between a diaphragm and a housing, said diaphragm being made of resilient material, a diaphragm base attached to said diaphragm around an outer edge of said diaphragm, said diaphragm base comprising a plurality of diaphragm base apertures, said diaphragm base being attached to said housing, said housing comprising a housing ball chamber communicating with a housing spring chamber through a valve seat, said ball being sized to sealably seat in said valve seat when said automatic shut-off valve is in a closed position, said ball being disposed substantially within said ball chamber, said ball spring being disposed substantially within said spring chamber, said ball spring urging said ball out of contact with said valve seat, said housing further comprising at least one housing spring chamber aperture through which said spring chamber communicates with an exterior of said housing spring chamber.