Cap for Spray Tank

FIG. 1 is a perspective view of a new and ornamental design for a spray wand;

FIG. 2 is a first side elevation view thereof;

FIG. 3 is a second side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top plan elevation view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof shown in a condition of use.

The broken lines shown in these drawings illustrate portions of the article and form no part of the claimed design. The spray tank, hose and wand in FIG. 8 being shown in broken lines illustrate environmental structure and form no part of the claimed design.