Subsea valve seat arrangements
AssigneeAker Subsea AS
InventorSimon Vaughan
Life of this patent
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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.
Claims12
A subsea valve comprising a valve gate moveable within a valve cavity;
- a main passageway extending transversely of the cavity;
- at least one annular valve seat in communication with a respective portion of the main passageway and extending to engage the gate, and an annular pocket accommodating an end of the respective seat remote from the valve gate;
- in which the seat has at the said end an annular buffer in radial engagement with the pocket and comprising a multiplicity of springs each extending radially and circumferentially of the seat.
A valve seat for use in a subsea gate valve and comprising an annular member having a first end for engagement with a valve gate and a second end for location in an annular pocket;
- in which the seat has at the said second end a rim carrying a multiplicity of springs each extending radially and circumferentially of the rim.
Dependencies are inferred from the claim text.