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US 2014/0109970 A1Published application
Metal cone plug valve
AssigneePGI International, Ltd.
InventorPeter Mark Middleton
Life of this patent
Estimating the term…
Abstract
The cone plug valve includes a valve body, a fluid inlet and a fluid outlet, a valve stem, and a cone supported on the valve stem. The metal cone is rotatably separate from the valve stem but moves axially in response to axially movement of the valve stem. A seat is fixably positioned within the valve body for sealing engagement with the cone, which has a sealing surface extending outward from the cone shaped exterior surface for sealing with the seat to close off flow through the valve body.
Claims15
A cone plug valve, comprising:
- a valve body having a fluid inlet, a fluid outlet, and a through passageway connecting the fluid inlet and the fluid outlet;
- a valve stem having a stem axis and axially movable relative to the valve body during rotation of the valve stem;
- a cone supported on the valve stem and having a generally cone shaped exterior surface, the cone rotatably separate from the valve stem and axially movable in response to axial movement of the valve stem;
- a seat fixably positioned within the valve body for sealing engagement with the cone;
- and
- the cone including a sealing surface extending outward from the cone shaped exterior surface for sealing with the seat to close off flow through the through passageway.
3 more elements
A cone plug valve, comprising:
- a valve body having a fluid inlet, a fluid outlet, and a through passageway connecting the fluid inlet and the fluid outlet;
- a valve stem having a stem axis and axially movable relative to the valve body during rotation of the valve stem;
- a cone supported on the valve stem and having a generally cone shaped exterior surface, the cone rotatably separate from the valve stem and axially movable in response to axial movement of the valve stem;
- a seat fixably positioned within the valve body for sealing engagement with the cone;
- the cone including a sealing surface extending outward from the cone shaped exterior surface for sealing with the seat to close off flow through the through passageway;
- and
- an alignment member allowing the cone to move axially while prohibiting rotation of the cone with respect to the seat.
4 more elements
A method of closing a cone plug valve, comprising:
- providing a valve body having a fluid inlet, a fluid outlet, and a through passageway connecting the fluid inlet and the fluid outlet;
- providing a valve stem having a stem axis and axially movable relative to the valve body during rotation of the valve stem;
- supporting a cone on the valve stem and having a generally cone shaped exterior surface, the cone rotatably separate from the valve stem and axially movable in response to axial movement of the valve stem;
- supporting a cone on the valve stem and having a generally cone shaped exterior surface, the cone rotatably separate from the valve stem and axially movable in response to axial movement of the valve stem;
- positioning a seat within the valve body for sealing engagement with the cone;
- and
- providing a sealing surface on the cone extending outward from the cone shaped exterior surface for sealing with the seat to close off flow through the through passageway.
4 more elements
Dependencies are inferred from the claim text.