Patent ID: 7823603

Claim:
An assembly for setting an output temperature for a thermostatic mixer valve having a maximum temperature limiting arrangement corresponding to a maximum temperature setting, the assembly comprising: a thermostatic mixing cartridge having a drive spindle rotatable about an axis and an undercap having a first stop tab corresponding to the maximum temperature setting; an overcap including a first detent member; and a rotational stem adaptor coupled to the drive spindle to rotate about the axis between the undercap and the overcap and having a second detent member and a second stop tab, wherein the first stop tab interacts with the second stop tab to prevent rotation of the stem adapter beyond a position corresponding to the maximum temperature setting and wherein the first detent member interacts with the second detent member to provide user feedback indicating a comfort temperature setting which is different from the maximum temperature setting and wherein the first and second detent members disengage to allow the stem adaptor to rotate until the second stop tab engages the first stop tab.