SUBSEA VALVE SEAT ARRANGEMENTS
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United States of America Patent
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Issued Date -
Oct 24, 2013
app pub date -
Nov 3, 2011
filing date -
Nov 5, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A subsea valve comprises a valve gate (4) moveable within a valve cavity (3) and a main passageway (2) extends transversely of the cavity. At least one annular valve seat (6) is in communication with a respective portion of the main passageway and extends to engage the gate. An annular pocket (7, 7a) accommodates an end of the respective seat remote from the valve gate. The seat has at the said end an annular buffer (54) in radial engagement with the pocket (7) and comprising a multiplicity of cantilever springs (55) each extending radially and circumferentially of the rim of the seat.
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