The ornamental design for a lever-type flush valve for urinals, as shown and described.
FIG. 1 is a right side perspective view of a lever-type flush valve for urinals, in which the design and the relative proportions thereof are shown; and,
FIG. 2 is a left side perspective view of the lever-type flush valve, in which the design and the relative proportions thereof are shown.
In the figures, dark shading represents surface reflections.