The ornamental design for a fireextinguishervalveassembly, as shown and described.
FIG. 1 is a top front perspective view of our new, original and ornamental design for a fire extinguisher valve assembly;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a front end view thereof; and
FIG. 5 is a rear end view thereof.
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is top front perspective view of the fire extinguisher valve assembly and canister.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. The shading lines in the drawings show contour and are not intended to indicate surface ornamentation.