Abstract: A water flushing device includes a membrane engaged onto a housing, a casing extended in the housing for forming an outer peripheral space between the housing and the casing, a valve device for selectively blocking and opening an opening of the membrane, a barrel mounted to the membrane and engaged in the casing, the membrane includes a stepped orifice having a narrowed and a relatively wider orifice portions for forming an inner peripheral shoulder, a gasket includes an outer peripheral flange engaged into the relatively wider orifice portion of the membrane and includes one or more slots formed in the outer peripheral flange for allowing the water to quickly flow into a sealed upper compartment of the housing.

Abstract: A water flushing device includes a membrane engaged onto a housing, a casing extended in the housing for forming an outer peripheral space between the housing and the casing, a valve device for selectively blocking and opening an opening of the membrane, a barrel mounted to the membrane and engaged in the casing. A gasket is engaged into the membrane and includes an outer peripheral flange for engaging with the membrane and includes one or more slots formed in the outer peripheral flange and extended radially for allowing the water to flow through the slots of the outer peripheral flange of the gasket and to quickly flow into a sealed upper compartment of the housing.

Abstract: A water flushing device includes a membrane engaged onto an upper portion of a housing for blocking the housing, a casing extended in the housing for forming an outer peripheral space between the housing and the casing, a valve device for selectively blocking and opening an opening of the membrane, and a barrel mounted to the membrane and engaged in the casing and having a passage communicative with the bore of the barrel and the chamber of the casing for allowing the water in the bore of the barrel to flow out through the passage of the barrel and to flow out into the chamber of the casing and for preventing the valve device from being opened by the internal water pressure in the barrel or in the casing.

Abstract: A water flushing device includes a membrane engaged onto an upper portion of a housing for blocking the housing, a valve device for selectively blocking or opening a central opening of the membrane, and two or more gaskets selectively engaged into the membrane and having bores of different inner diameters for adjusting the water flushing speed through the membrane and the gaskets and for adjusting the water flushing from an outlet port of the housing to the floor toilet bowl. The membrane includes an inner peripheral rim and an outer peripheral rim each having a blade for reinforcing the membrane, and includes a number of plates engaged in the middle peripheral portion for further reinforcing the membrane.