Abstract: A flush valve assembly includes a valve body in which a flexible film, a hollow tubular member and an activation member are received. The flexible film has a weight enclosed therein which includes a neck extending from an underside of the flexible film and the neck is threadedly connected to the hollow tubular member located beneath the flexible film. An annular flange extends from a top of the flexible film and defines a recessed area. A central hole is defined through the flexible film and communicates with the neck. A plurality of ribs extend from an outer periphery thereof and a collar is mounted to the tubular member and rested on a radial flange of the tubular member. A disk of the activation member is engaged with the recessed area and a shank extending from the disk extends through the central hole and tubular member.