Expansion valve

FIG. 1 is a perspective view taken from the front right of a first embodiment of an expansion valve showing my new ornamental design;

FIG. 2 is a perspective view taken from the front left thereof;

FIG. 3 is a front side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a rear view thereof;

FIG. 9 is a perspective view taken from the front right of a second embodiment of the expansion valve;

FIG. 10 is a perspective view taken from the rear left thereof;

FIG. 11 is a front side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top side view thereof;

FIG. 14 is a bottom side view thereof;

FIG. 15 is a left side view thereof; and,

FIG. 16 is a rear side view thereof.