formed with a recess 78 and a forwardly extending hub 79 which fits over the pin 70 on the latch member this hub carries a torsion spring 80 having one end bearing on the stop pin 77 and its other end bearing on the edge of recess 78 this torsion spring biases the operator 71 clockwise causing it to assume the position shown in fig1 where the stop arm 76 engages the stop pin 77 and the upper surface 72 matches the upper surface 143 of the latch member the float lever 151 is similar to float lever 51 of fig1 however it is simplified as the pivot pin 53 of fig1 has been eliminated this float lever carries an inwardly extending pin 157 for actuating the latch at the water saving level and a second pin 166 for actuating the latch at the end of a full flush lever 151 also carries a selector pin 81 for controlling the operator 71 on the latch fig9 shows the parts in the positions assumed at the instant a flush started the user has operated the external flush lever to pull upwardly on the chain 128 which lifts valve lever 107 39 to the point where the latching extension 119 of the valve lever has engaged upward extension 141 of the latch the crossover member 113 of valve operator 107 has engaged the lever portion 73 of operator 71 rotating it to the retracted or inoperative position shown in which surface 72 is out of the path of the float lever pin 157 if the user wishes a short flush the flush handle is released immediately allowing the valve lever 107 to drop to the position shown in fig1 in which the latching extension 119 engages the latching surface 139 of.