Abstract: A toilet tank 13 is provided with a bottom flapper 5 in valved relationship to a tank outlet 6 attached at an angle from an overflow pipe 8 or directly above the tank outlet 6 at the bottom of the tank 13 and a top flapper 9 in valved relationship to the end of a top-level outlet pipe 10 that is offset at an angle from the overflow pipe 8 which is extended vertically from a side of the outlet orifice 6. A bottom flexible line 1 is attachable at one end to the bottom flapper 5 and to a flush rod 3 at the opposite end for pulling the bottom flapper 5 up to open the tank outlet 6 by operation of a swivelable flush handle 11. A top flexible line 2 is attachable to a top flapper 9 at the end of the top outlet pipe 10, threaded through a line eye 7 at the top of the overflow pipe 8 and then attachable to an end section 4 of the flush rod 3. Swiveling the flush handle 11 slightly in opposite directions up or down causes the two flappers 5 and 9 to be operable separately as valves.