Dual flush valve assembly

A dual flush valve assembly adapted for partial flush or full flush of water in a toilet tank having a discharge pipe comprising, in combination:

• a) a hollow body including an open-top upright overflow tube;
• b) an upper inlet disposed in a central portion of said body;
• c) a lower inlet disposed in a lower portion of said body and closely adjacent the bottom of said tank;
• d) a first elongated actuating lever arm connected at one end thereof to a flush handle;
• e) a second actuating lever arm pivotally mounted at one end thereof to said overflow tube;
• f) said flush handle adapted to being rotatably mounted on a wall of said tank for downward movement;
• g) an upper flap valve pivotally mounted on said overflow tube and in flow control association with said upper inlet;
• h) a lower flap valve pivotally mounted on the lower end portion of said overflow tube and in flow control association with said lower inlet;
• i) a first chain connecting said first actuating arm with said upper flap valve;
• j) a second chain connecting said first actuating arm with said second actuating arm;
• k) a third chain connecting said second actuating arm with said lower flap valve;
• l) a drain opening in a bottom wall of said body for connection with said discharge pipe;
• and
• m) a hollow adapter depending from said body bottom wall in communication with said drain opening for connecting said drain opening in alignment with said discharge pipe, said adapter comprising a cylindrical upper portion and a lower portion having a plurality of downwardly and outwardly projecting resilient finger-like members, said adapter being sized to be inserted into said discharge pipe with said finger-like members resiliently engaging said discharge pipe.