FIG. 1 is a front perspective view of a unidirectional valve, showing the new design.
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational view being the mirror image of the right side elevational view;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a rear elevational view thereof.
In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design.
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