We claim the ornamental design for a delta gas burner, as described and illustrated.
FIG. 1 is a top perspective view of a delta gas burner of this application; and,
FIG. 2 is a bottom perspective view of a delta gas burner of this application.
The surface shading lines which may be seen in the figures form no part of the claimed design. Broken lines are included for the purpose of illustrating portions of the delta gas burner that form no part of the claimed design.
The design consists of the features of shape, ornament, pattern and configuration of a delta gas burner for use in a stove or cook-top as shown in the drawings.