The ornamental design for a gasmainvalvewrench, substantially as shown d described.
FIG. 1 is a top plan view of a gas main valve wrench showing our new
design;
FIG. 2 is a left side elevation view of the gas main valve wrench shown in
FIG. 1, the right side, not shown, appearing substantially identical
thereto;
FIG. 3 is a front elevation view of the gas main valve wrench shown in
FIG. 1, the rear elevation, not shown, being a mirror image thereof; and
FIG. 4 is a bottom plan view of the gas main valve wrench shown in FIG. 1.