A water-saving float-to-inlet valve adapter device for modifying the refilling level of a toilet flush tank of a type which includes a source of water under pressure and an inlet valve provided with an operating member for connecting same to an interior chamber within a toilet flush tank and which also includes a buoyant float member adapted to be connected to the inlet valve for opening same whenever the float member drops below a predetermined level and for closing same whenever the float member rises to at least substantially the same predetermined level, comprising:
- a replacement adapter having a first end adapted to be attached to an inlet valve opening and closing operating member and having a downwardly displaced second end remote from said first end and adapted to be attached to a buoyant toilet tank float member at a level substantially below that of the normal attachment location of such a toilet tank buoyant float member, whereby to effectively relatively downwardly displace the normal vertical position of such a hollow buoyant float member which corresponds to the closing of such an inlet valve and thus causes a toilet flush tank to refill only partially to a lower level than has been the customary practice with a conventional attachment arm adapted to conventionally substantially transversely interconnect such a buoyant float member and such an inlet valve operating member, said effective downward displacement of said second end of said replacement adapter relative to said first end thereof being provided by an intermediate downwardly offset displacement portion of said adapter effectively displacing the entire second end correspondingly downwardly from the entire first end thereof by an amount determined by the magnitude of said intermediate downwardly offset displacement portion, said intermediate downwardly offset displacement portion of said replacement adapter being further provided with manual adjustment means and thereby being controllably manually adjustable whereby to correspondingly modify the normal valve closing position of a buoyant float member adapted to be attached to the second end thereof and to similarly correspondingly modify the normal water refilling level within a toilet flush tank, said manual adjustment means comprising two relatively vertically slideably engageable adjustment portions and locking means for controllably locking same in any relatively vertically adjusted position;
- and water volume selector and indicator means effectively cooperable with respect to a portion of said replacement adapter carrying said second end and perceptibly indicating a selected extent of said magnitude of the vertical displacement of said second end relative to said first end and correspondingly perceptibly indicating a selected modified vertical position which a buoyant float member adapted to be attached to said second end will assume when in a normal valve closing position and thus correspondingly indicating a selected modified normal water refilling level within a toilet flush tank, said water volume selector and indicator means being effectively interconnected by said two relatively vertical slideably engageable adjustment portions of said manual adjustment means and including scale means and relatively moveable index means cooperable with said scale means for providing a perceptible indication of said relative vertical adjustment of said two vertically slideably engageable adjustment portions.