Valve seats
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United States of America Patent
Stats
-
Jan 2, 1990
Grant Date -
N/A
app pub date -
Jun 15, 1988
filing date -
Jul 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metal valve seat for a butterfly valve or ball valve and has the form of an apertured disc with a radially outward part (4A) by which it is securable to a valve body and a radially inward dished part (4B) which projects laterally around the disc aperture. The valve seat is characterized in that the disc part (4B) is formed circumferentially with a plurality of web-connected fingers which have a radially inward surface of varying generative radius. The invention also consists in a butterfly valve or a ball valve incorporating one or a pair of such metal valve seats.
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