FIG. 1 is a perspective view of diaphragm valve showing my present design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left view thereof;
FIG. 5 is a right view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is another perspective view thereof;
FIG. 9 is a perspective view taken along the section line 11-11 of FIG. 4;
FIG. 10 is another perspective view taken along the section line 11-11 of FIG. 4 from another view angle;
FIG. 11 is a cross-sectional view taken along the section line 11-11 of FIG. 4;
FIG. 12 is a cross-sectional view taken along the section line 12-12 of FIG. 6; and,
FIG. 13 is a cross-sectional view taken along the section line 13-13 of FIG. 6.
The broken lines in the drawings illustrate portions of the diaphragm valve which form no part of the claimed design.