| 2881795 | Diaphragm check-valves | April, 1959 | Waldenmaier et al. | 251/331 |
| 2939672 | Flexible diaphragm flow control valve | June, 1960 | Rich | 251/5 |
| 3451423 | FLUID ACTUATED DIAPHRAGM VALVE | June, 1969 | Priese | 251/331 |
| 4181151 | Diaphragm valve | January, 1980 | Ensign | 251/61.1 |
| 4624442 | Control regulator having a rolling diaphragm | November, 1986 | Duffy et al. | 251/331 |
| 4827974 | Top entry expansible tube valve | May, 1989 | Coulter | 251/61.1 |
FIG. 1 is a perspective view taken from the top, front and right end of a diaphragm valve showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a right end elevational view thereof; and,
FIG. 7 is a left end elevational view thereof.