Patent ID: 7261275
Filing Date: 2007-08-28
Classification: F16K

Abstract:
1. A relief valve for use in a diaphragm flush valve, the relief valve having a seating member, a shaft extending downward from the seating member, a stem affixed to the shaft and extendable down through a guide member of the diaphragm flush valve, and a sleeve member structured to slide on the stem, the improvement to which comprises: (a) the shaft having a threaded exterior surface and a lower end; (b) a retaining member having an upper section, and a middle section connecting the upper section to a lower stopping section, wherein the upper body section being sized and shaped to screw onto the threaded exterior surface of the shaft, and the lower stopping section comprises a stop member extending into a vertical slit in the sleeve member; and (c) wherein the retaining member is constructed from a wire coiled at one end to form the upper section with the middle section of the wire extending vertically downward from the upper section and with an opposing end of the wire bent perpendicularly to the middle section to form the stop member having a length sufficient to extend into the vertical slit; (d) wherein the retaining member is constructed from a wire coiled at one end to form the upper section with the middle section of the wire extending vertically downward from the upper section and with an opposing end of the wire bent perpendicularly to the middle section to form the stop member having a length sufficient to extend into the vertical slit.