through the refill hose 16 into the opening 18 at the upper extremity of an overflow tube 20 the ball cock 14 operates in a conventional manner for controlling the flow of water from the water inlet pipe 12 into the flush tank 10 and simultaneously through the refill hose 16 into the overflow tube 20 the specific details of construction of ball cock 14 being fully described in the above cited patents to schoepe et al further in a conventional manner water is discharged from the tank 10 through an opening 32 in the bottom wall thereof opening 32 is controlled by a valve 22 and its associated valve seat 36 actuation of the valve 22 is effected through a linkage which comprises a lever 24 a link 26 and a rod 28 in the usual fashion the linkages enable the unseating of the valve 22 from its seat 36 from the outside of the tank via handle 38 fig1 rod 28 is constrained to move vertically within a guide 30 which is fastened about overflow tube 20 via a connecting ring fastener 34 the ball cock 14 includes an inlet valve 40 which is made operable through a valve operating lever 42 which in the position illustrated in fig2 is off when lowered to the position illustrated in fig4 valve operating lever 42 acts to open valve 40 to admit water to tank 10 via openings 52 a vertically moveable ball cock float 46 includes a guide receiving passage 48 formed therein.