Vacuum check valve

Description

[0001] FIG. 1 is a top perspective view of a vacuum check valve showing our new design;

[0002] FIG. 2 is a bottom perspective view thereof;

[0003] FIG. 3 is a front elevation view thereof;

[0004] FIG. 4 is a rear elevation view thereof;

[0005] FIG. 5 is a left side elevation view thereof;

[0006] FIG. 6 is a right side elevation view thereof;

[0007] FIG. 7 is a top plan view thereof; and,

[0008] FIG. 8 is a bottom plan view thereof.

[0009] The dash-dash broken lines in the drawings illustrate the portions of the vacuum check valve that form no part of the claimed design.

Claims

The ornamental design for a vacuum check valve, as shown and described.

Images