I claim the ornamental design for a portable plumbing sprinkler head array, as shown and described.
FIG. 1 is a bottom perspective view of the plumbing array of our design embodiment thereof;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is an end elevation view thereof;
FIG. 5 is an end elevation view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a top plan view thereof.
The intended use of the article in which the design is embodied is to provide a portable decontamination unit to first responders, which needs little assembly time.