FIG. 1 is a front left top perspective view of a check valve body showing a first embodiment of our new design;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image of the left side elevation view;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a front left top perspective view of a check valve body showing a second embodiment of our new design;
FIG. 8 is a rear elevation view thereof;
FIG. 9 is a front elevation view thereof;
FIG. 10 is a left side elevation view thereof, the right side elevation view being a mirror image of the left side elevation view; and,
FIG. 11 is a bottom plan view thereof, the top plan view being the same as the bottom plan view.
The broken lines shown in the figures represent portions of the check valve body that form no part of the claimed design.