| 摘要 |
A valve operation system particularly well suited for remote and/or automatic operation of many different irrigation valves. A linear actuator is provided with a rod which extends from and retracts into a housing. A connecting arm assembly interconnects the valve stem and the rod such that the extension and retraction of the rod is transferred into the rotational motion of the valve stem and the operation of the valve. The system components are held in place by a mounting plate which may be secured to a number of different valves. A manual operation assembly is included to allow a user to manually open or close the valve if necesasary. A valve stem adaptor is also provided to allow embodiments of the present invention to be adapted to the different valve stems found on various valves. Thus, one embodiment of the present invention may be adapted to be used with several different valves while providing reliable operation.
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