Ball Valve Set

FIG. 1 is a first perspective view of a ball valve set showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is the using state of the ball valve set thereof.

The broken lines shown in the drawings depict portions of the ball valve set that form no part of the claimed design.