flexible tabs 22 which extend radially into the central opening 15 39 and are so dimensioned that they overlie the rim of the inverted conical valve element when the entire dispensing element is assembled on the bottle as shown in fig3 a the lower rim or edge of the overcap skirt abuts a second annular ledge 19 39 the overcap is held in position over the mouth of the bottle by an annular rim 23 around the inner periphery of the skirt 17 39 which snaps over and engages beneath a corresponding annular rim 23 39 around the outer periphery of the bottle neck and spaced above the second annular ledge 19 39 thus interengagement of annular rims 23 23 39 serves to lock the entire bottle inner cap conical valve overcap assembly together the operation of the dispenser is best understood with reference to fig3 a and 3b when the bottle and dispensing closure elements are assembled and are in their non dispensing mode the elements appear as indicated in fig3 a the interengagement of the overcap 12 with the bottle 11 is effected through cooperating and locking annular rims 23 23 39 around the inner periphery of the overcap skirt and the constricted portion of the bottle neck respectively it will also be seen that the flexible tabs 22 bear against the rim of the conical valve element 20 forcing it downwards thus effecting sealing engagement between the outer wall of the valve near the base thereof and the edge of central opening 15 when the flexible bottle is compressed the various elements of the combination achieve the general.