The ornamental design for a stanchion for a beverage tap, as shown and described.
FIG. 1 is a side elevational view of a stanchion for a beverage tap showing
my new design, the undisclosed sides being the same in appearance as the
side shown.
FIG. 2 is a top plan view thereof on an enlarged scale; and
FIG. 3 is a bottom plan view thereof on an enlarged scale.