{
  "abstract": "Various embodiments include a control valve comprising: a valve body having a fluid inlet, a fluid outlet, and an inner cavity between them; a flow rate presetting assembly; and an indicator. The rate setting assembly includes: an adjusting rod having a first end projecting from the body and a second end extending into the cavity, and rotating around an axis; a control component disposed at a bottom side of the body and connected to the first end to rotate the adjusting rod; and an adjusting component disposed in the inner cavity connected to the adjusting rod, rotating between a first position and a second position under the action of the adjusting rod to set a maximum degree of opening of the control valve. The deviation of the indicating part relative to a reference position indicates a maximum flow rate corresponding to a position of the adjusting component.",
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  "published_at": "2026-09-15T19:03:16.050270Z",
  "publisher": "Nebula Innovations Limited",
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  "source_date": "2026-04-14",
  "source_id": "US-12601408-B2",
  "source_name": "the United States Patent and Trademark Office",
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  "supersedes": null,
  "title": "Control valve",
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