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The ornamental design for the rotary air valve, as shown. |
FIG. 1 is a perspective view taken from the front and right side of a rotary air valve showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a bottom plan view thereof.
Patent | Priority | Assignee | Title |
Patent | Priority | Assignee | Title |
3332218, | |||
3973592, | Jan 27 1975 | Water Services of America, Inc. | Fluid flow diverter |
208225, |
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