Patent ID: 6923426

Claim:
A relief valve for use in a diaphragm flush valve, the relief valve having a seating member, a shank extending downward from the seating member, a stem affixed to the shank 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 shank having a threaded exterior surface and a lower end, and (b) a tubular member having an upper body section and a lower body section, the upper body section being provided with an interior threaded surface sized to screw onto the shank threaded exterior surface, the tubular member having an interior passageway extending vertically through the upper body section and the lower body section and of sufficient breadth to extend about the stem and the sleeve, the lower body section having a stop extending into the passageway to retain the sleeve member in the passageway, the passageway having sufficient length to permit the sleeve to slide along the stem a predetermined minimum distance.