The ornamental design for an automatic watershutoffvalveunit, as shown and described.
FIG. 1 is a top perspective view of an automatic water shutoff valve unit showing my new design;
FIG. 2 is a bottom perspective view of the automatic water shutoff valve unit;
FIG. 3 is a front elevational view of the automatic water shutoff valve unit;
FIG. 4 is a rear elevational view of the automatic water shutoff valve unit;
FIG. 5 is a top plan view of the automatic water shutoff valve unit;
FIG. 6 is a bottom plan view of the automatic water shutoff valve unit;
FIG. 7 is a left side elevational view of the automatic water shutoff valve unit; and,
FIG. 8 is a right side elevational view of the automatic water shutoff valve unit.
The broken line shown in the figures are for the purpose of illustrating portions of the automatic water valve shutoff unit that form no part of the claimed design.