Lined butterfly valve and method for manufacturing lined butterfly valve
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United States of America Patent
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Sep 17, 2024
Grant Date -
Jan 12, 2023
app pub date -
Dec 28, 2020
filing date -
Dec 28, 2020
priority date (Note) -
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Abstract
A lined butterfly valve and manufacturing method, the lined butterfly valve including a valve disk (2) with a core metal (20) covered with a lining layer (22) provided rotatably inside a body (3) by a stem (5). The lining layer includes a front/back-side lining part (32) provided on each of front and back sides of the core metal and an outer circumferential lining part (33) provided on an outer circumferential side of the core metal. The front/back-side lining part is provided on each of the front and back sides of the core metal in which no occurrence of warpage is assumed so as to have a thickness T1, and the outer circumferential lining part has a thickness T2 from an outer circumferential end of the core metal to a tip seal surface of an outer circumferential end of the valve disk.
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