Butterfly valve
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Mar 25, 2025
Grant Date -
Oct 12, 2023
app pub date -
Jul 29, 2021
filing date -
Jul 29, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A butterfly valve includes a valve body, a valve stem rotatably supported by the valve body, a valve element rotatably supported by the valve body, and a bushing externally fitted around the valve stem. The valve element is configured by a core member and a contour member formed of a resin material and surrounding the core member to define a contour of the valve element, the valve element is formed with valve-stem holes that support the valve stem via the bushing, the contour member has a stem hole component forming inner peripheral surfaces of the valve-stem holes, and the bushing and the valve stem have shapes such that a gap is formed between an inner peripheral surface of a portion of the bushing located inside the stem hole component and an outer peripheral surface of a portion of the valve stem located inside the stem hole component.
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