Patent ID: 8205276

Claim:
A dual flush system comprising: a pressure flushing tank defining an internal volume and having an inlet and an outlet; an air inducer operatively connected to the inlet and configured to pressurize the pressure flushing tank; a retention tray disposed within the pressure flushing tank, the retention tray having both a retention tray opening and a central opening disposed in a bottom portion of the retention tray, the central opening having a column rising therefrom and forming a wall, the retention tray defining a volume; a flush valve for controlling the outlet, the flush valve extending from the outlet, through the central opening of the retention tray; a retention tray valve disposed adjacent to the retention tray opening for controlling the retention tray opening, the retention tray valve comprising a valve seal engageable with the retention tray opening, the valve seal having a valve stem connected thereto; a flush selector in communication with the retention tray valve and the flush valve, wherein actuation of the flush selector in a first direction actuates the flush valve for a partial flush and actuation of the flush selector in a second direction actuates the flush valve and the retention tray valve for a full flush.