| 摘要 |
Apparatus integral with a part-circle sprinkler for automatically reversing the direction of the part-circle water pattern generated by the sprinkler relative to the direction of movement of an associated long line of sprinkler pipeline. The invention includes a vane of selected configuration secured to the sprinkler and exposed to water flow in the pipeline, which vane is sensitive to the direction of water flow to determine and maintain the desired orientation of the sprinkler relative to the pipeline.
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