The ornamental design for the portable wet abrasive blasting unit, as shown and described.
FIG. 1 is a perspective view of a first embodiment of a portable wet abrasive blasting unit;
FIG. 2 is a front view of the first embodiment of the portable wet abrasive blasting unit of FIG. 1;
FIG. 3 is a rear view of the first embodiment of the portable wet abrasive blasting unit of FIG. 1;
FIG. 4 is a left view of the first embodiment of the portable wet abrasive blasting unit of FIG. 1;
FIG. 5 is a right side view of the first embodiment of the portable wet abrasive blasting unit of FIG. 1;
FIG. 6 is a top view of the first embodiment of the portable wet abrasive blasting unit of FIG. 1; and,
FIG. 7 is a bottom view of the first embodiment of the portable wet abrasive blasting unit of FIG. 1.
Portions of the figures shown in broken, dashed lines illustrate the environment of the claimed ornamental features of the portable wet abrasive blasting unit and do not form any part of the ornamental design. Shading is shown in the figures merely to aid in the understanding of the scope of the claim.