The ornamental design for a ballvalve with integralelbow, as shown and described.
FIG. 1 is a perspective view of a ball valve with integral elbow, showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left-side elevation view thereof;
FIG. 5 is a right-side elevation view thereof;
FIG. 6 is a rear elevation view thereof; and,
FIG. 7 is a front elevation view thereof.
The broken lines shown in the figures are for the purpose of illustrating portions of the ball valve with integral elbow and form no part of the claimed design.