I claim the ornamental design for a faucet attachment valve handle, as shown and described.
FIG. 1 is a perspective view of a faucet attachment valve handle, showing my new design;
FIG. 2 is a right-side elevational view thereof, the left-side elevational view being a mirror image thereof;
FIG. 3 is a rear perspective view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken lines shown in the figures are for the purpose of illustrating portions of the faucet attachment valve handle and form no part of the claimed design.