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US 2018/0266573 A1Published application
High Pressure Plug Valve
AssigneeKerr Machine Co.
InventorsMark S. Nowell, Kelcy Jake Foster, Michael Eugene May, Brandon Scott Ayres
Life of this patent
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Abstract
A plug valve having an improved sealing assembly. The valve has a body, and a bore formed in the body. The bore is configured to receive a plug and an insert. Recesses are formed in the valve in the internally disposed surface of the bore for placement of seals, which interact with an externally disposed sealing surface of the insert. The plug and insert have complementary surfaces that prevent fluid from passing through the annulus between the plug and insert.
Claims25
A valve, comprising:
- a body, comprising:
- a flow passage including an inlet passage and an outlet passage;
- and
- an enlarged internal chamber intersecting the flow passage and having a closed first groove formed in its surface, the first groove surrounding the flow passage at a first site joining the chamber;
- a rotatable plug element positioned within the chamber, having a fluid passage extending therethrough, and having a portion of its external surface that is both alignable with the flow passage and congruent with a portion of the curved side of a cylinder;
- and
- first and second insert elements positioned within the chamber and cooperating to at least partially surround the plug element, each insert element having a fluid opening extending therethrough and neither insert element positioned within the first groove.
4 more elements
A valve comprising:
- a valve body having a valve chamber formed therein, the valve chamber having a pair of opposed ports formed therein, each port communicating with a fluid conduit;
- at least two solid elongate inserts that cooperate to form a cage positioned within the valve chamber, each insert having a convex surface that is interrupted by a fluid conduit that extends through the cage, the convex surface bounded by edges formed at or near the longitudinal extremities of the insert;
- and
- a rotatable plug penetrated by a fluid conduit and positioned within the cage;
- wherein a recess is disposed within the valve body about each of the opposed ports.
2 more elements
A valve comprising:
- a valve body having a valve chamber formed therein, the valve chamber having:
- a surface defining a shape complementary to the lateral surface of a right conical frustum;
- a pair of opposed fluid ports formed in the surface;
- and
- a groove formed in the surface and surrounding each port.
2 more elements
Dependencies are inferred from the claim text.