US D287871 S
FIG. 1 is a front elevational view of a seismic gas shut-off valve showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is an elevational view of the left side thereof;
FIG. 5 is an elevational view of the right side thereof; and
FIG. 6 is a rear elevational view thereof.