Pump assembly

FIG. 1 is a rear, left side perspective view of a pump assembly showing my new design;

FIG. 2 is a left side elevational thereof;

FIG. 3 is a top plan elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line representations of items in FIGS. 1-7, are for purposes of illustration only, and form no part of the claimed design.