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US 10,801,627 B2Granted
Valve seats, valve assemblies, and related methods
AssigneeFlowserve Management Company
InventorPaul Simon Warbey
Life of this patent
Estimating the term…
Abstract
Valve seats may include an insert and an outer housing. The insert may comprise a first material and the outer housing may comprise a second material. The second material of the outer housing may exhibit a hardness that is greater than a hardness of the first material of the insert. Valve assemblies and related method may include valve seats.
Claims20
A valve seat comprising:
- an insert comprising a first polymer material, the insert configured to be positioned proximate and to contact a valve member and define a portion of a seal between the valve member and a valve body in which the valve member is positioned, the insert having a primary seating surface to define the portion of the seal with the valve member;
- and
- an outer housing comprising a second polymer material, the outer housing defining an axially open and unobstructed recess, wherein at least a portion of the insert is configured to be positioned within the outer housing in the axially open and unobstructed recess, the outer housing configured to be positioned between the insert and the valve body to define another portion of the seal between the valve member and the valve body, the outer housing having a secondary seating surface to define the another portion of the seal with the valve member, wherein the second polymer material of the outer housing exhibits a hardness that is greater than a hardness of the first polymer material of the insert.
A valve assembly comprising:
- a valve body comprising at least one port;
- a valve member positioned within the valve body and configured to selectively enable fluid to pass through the at least one port in the valve body;
- and at least one valve seat comprising:
- a seat member comprising a polymer material, the seat member positioned adjacent and configured to seal against the valve member;
- and a support member comprising another polymer material, the support member positioned between the seat member and the valve body and configured to seal against the valve body, wherein a radial extent and an axial extent of the seat member are received within a radial extent and an axial extent of a recess defined by the support member, and wherein in an initial state, an axial end surface and a radially outer surface of the support member border and contact the valve body.
2 more elements
A method of providing a seal in a ball valve, the method comprising:
- positioning a first section of a seat comprising a first polymer material adjacent a movable ball of the ball valve;
- positioning a second section of the seat comprising a second polymer material adjacent a body of the ball valve, the first section of the seat being received in an axially unobstructed recess defined in the second section of the seat;
- forcing the movable ball into the seat to form a seal between the movable ball and the valve body with the seat, and defining the seal between the movable ball and the valve body with the first section having a primary seating surface and with the second section having a secondary seating surface.
Dependencies are inferred from the claim text.