The ornamental design for a coupler for plumbingfixtures, as shown and described.
FIG. 1 is a perspective bottom view of a coupler for plumbing fixtures.
FIG. 2 is a perspective side view of a coupler for plumbing fixtures.
FIG. 3 is a perspective top view of a coupler for plumbing fixtures.
FIG. 4 is a perspective side view of a coupler for plumbing fixtures.
FIG. 5 is a plan top view of a coupler for plumbing fixtures; and,
FIG. 6 is a plan side view of a coupler for plumbing fixtures.
The present invention is an ornamental design for a coupler for plumbing fixtures designed to connect polyethylene tubing of said plumbing fixtures with copper tubing while presenting a flush interface with roughed-in walls or flooring, thereby making plumbing rough-in faster and easier to accomplish.