The ornamental design for a manifolddevice, as shown and described.
FIG. 1 is a front elevation of a manifold for sanitizing soft drink
dispensing machines or the like showing my new design;
FIG. 2 is a bottom plan view thereof, the undisclosed top and rear being
unornamented;
FIG. 3 is a front elevation of a second embodiment thereof, the undisclosed
top and rear being unornamented and the bottom being identical to that
shown in FIG. 2.