Double positive isolation ball valve
AssigneeCameron International Corporation
InventorsWilliam S. Shelton, Christian Meade
Life of this patent
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Abstract
The disclosed embodiments relate to a valve assembly that includes a valve body that has a cavity having one or more seating surfaces, a ball body disposed within the valve body and configured to engage the one or more seating surfaces to form a seal, and an actuator configured to drive the ball body in a first axial direction along a central axis of the cavity to wedge the ball body against the one or more seating surfaces to form the seal, and where the actuator is configured to move the ball body in a second axial direction along the central axis to unseat the ball body and to rotate the ball body about the central axis between an open position and a closed position.
Claims20
A valve assembly, comprising:
- a valve body comprising a cavity having one or more seating surfaces;
- a ball body disposed within the valve body and configured to engage the one or more seating surfaces to form a seal;
- and
- an actuator configured to drive the ball body in a first axial direction along a first central axis of the cavity to wedge the ball body against the one or more seating surfaces to form the seal, and wherein the actuator is configured to move the ball body in a second axial direction along the first central axis to unseat the ball body and to rotate the ball body about the first central axis between an open position and a closed position.
A valve assembly, comprising:
- a valve body comprising a cavity having angled surfaces;
- a substantially spherical ball body disposed within the valve body, wherein the substantially spherical ball body comprises a bore having a first central axis offset from a second central axis of the substantially spherical ball body;
- an actuator configured to drive the ball body in a first axial direction along a third central axis of the cavity, to move the ball body in a second axial direction along the third central axis to unseat the ball body, and to rotate the ball body about the third central axis;
- and
- one or more seats disposed between the ball body and the valve body, wherein the one or more seats are configured to move along the angled surfaces as the actuator drives the ball body in the axial direction.
A valve assembly, comprising:
- a valve body comprising a cavity having one or more seating surfaces;
- a ball body disposed within the valve body, wherein the ball body comprises a bore having a first central axis offset from a second central axis of the ball body;
- and
- an actuator configured to drive the ball body in a first axial direction along a third central axis of the cavity, to move the ball body in a second axial direction along the third central axis to unseat the ball body, and to rotate the ball body about the third central axis, wherein the actuator is coupled to the ball body via a valve stem.
Dependencies are inferred from the claim text.