Patent ID: 8266733
Filing Date: 2012-09-18
Classification: E03D

Abstract:
1. A flush valve assembly, comprising, a valve body having wherein at least a portion of the wall is downwardly linearly tapered and has a decreasing valve body diameter as measured transversely across the valve body, and the tapered wall portion is below the radiused inlet portion, a flapper valve cover detachably connected to the flush valve assembly and having a transverse cross-sectional diameter sufficiently large to cover the inlet opening of the valve body, a pivot mechanism having a pivot arm capable of opening and closing the flapper valve cover by a pivot motion upon actuation, and a flapper bulb depending from a lower surface of the flapper valve cover, wherein the flapper valve cover is sufficiently buoyant so as to be capable of resisting the force of flowing water and remain open so as to allow flush water to pass through the valve body when the valve body is installed on a toilet having a flush volume of about 1.6 gallons per flush or less, before closing the valve cover.