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US 2010/0148108 A1Published application
Fluid Control Valve
AssigneeDresser, Inc.
InventorJ. Asher Glaun
Life of this patent
Estimating the term…
Abstract
A valve includes a body, a cage, a plug, a stem, a stop ring, and a pilot plug. The cage includes at least one cage port there through allowing fluid communication between the fluid inlet and the fluid outlet. The plug is movable linearly within the cage to allow fluid communication between the fluid inlet and the fluid outlet when the valve is open. The pilot plug is adapted to transfer downward force from the stem to the plug by contacting the stop ring of the plug and thereby urging the plug downward through the cage when the stem moves linearly downward to adjust the valve from the closed position to the open position. In an alternative embodiment, the stem includes a collar adapted to contact the plug and adjust the valve from the closed position to an open position.
Claims29
A valve comprising:
- a body comprising a fluid inlet and a fluid outlet in fluid communication with a gallery, the gallery being closed at a first end with a bonnet;
- a cage disposed within the gallery, the cage comprising at least one cage port there through allowing fluid communication between the fluid inlet and the fluid outlet when the valve is in an open position;
- a plug movably disposed within the cage, the plug comprising an outer wall and an inner wall, the outer wall of the plug disposed adjacent the cage port and being movable linearly to substantially prevent fluid communication between the fluid inlet and the fluid outlet when the valve is in a closed position, the plug movable linearly within the cage to allow fluid communication between the fluid inlet and the fluid outlet when the valve is in the open position, the inner wall defining a flow passage through at least a portion of the plug;
- a stem extending through the flow passage, an inboard end of the stem disposed in a lower portion of the flow passage, an outboard end of the stem extending through the cage and an aperture in the bonnet to an exterior of the body;
- and
- a pilot plug coupled to the inboard end of the stem, the pilot plug disposed in the lower portion of the flow passage, the pilot plug adapted to transfer downward force from the stem to the plug and thereby urging the plug downward through the cage when the stem moves linearly downward through the flow passage away from the bonnet to adjust the valve from the closed position to the open position.
3 more elements
A method of regulating fluid with a valve, comprising:
- providing a valve in fluid communication with a fluid inlet and a fluid outlet, the valve comprising:
- a body comprising a gallery in fluid communication with the fluid inlet and the fluid outlet, the gallery being closed at a first end with a bonnet;
- a cage disposed within the gallery, the cage comprising at least one cage port there through;
- a plug movably disposed within the cage, the plug comprising an outer wall and an inner wall, the outer wall of the plug disposed adjacent the cage port;
- a stem extending through the flow passage, an inboard end of the stem disposed in a lower portion of the flow passage, an outboard end of the stem extending through the cage and an aperture in the bonnet to an exterior of the body;
- a stop ring detachably secured to the plug proximate to the lower portion of the flow passage;
- a pilot plug coupled to the inboard end of the stem, the pilot plug disposed in the lower portion of the flow passage;
- and
- a seat adjacent a bottom surface of the cage, the plug in contact with the seat;
- providing a fluid to the fluid inlet;
- applying a first downward force on the pilot plug via the stem;
- unseating the pilot plug from the inner wall;
- and
- allowing a portion of the fluid to communicate from the fluid inlet through the flow passage.
11 more elements
A method of regulating fluid with a valve, comprising:
- providing a valve in fluid communication with a fluid inlet and a fluid outlet, the valve comprising:
- a body comprising a gallery in fluid communication with the fluid inlet and the fluid outlet, the gallery being closed at a first end with a bonnet;
- a cage disposed within the gallery, the cage comprising at least one cage port there through;
- a plug movably disposed within the cage, the plug comprising an outer wall and an inner wall, the outer wall of the plug disposed adjacent the cage port;
- a stem extending through the flow passage, an inboard end of the stem disposed in a lower portion of the flow passage, an outboard end of the stem extending through the cage and an aperture in the bonnet to an exterior of the body;
- a contact member disposed on the stem;
- a pilot plug coupled to the inboard end of the stem, the pilot plug disposed in the lower portion of the flow passage;
- and
- a seat adjacent a bottom surface of the cage, the plug in contact with the seat;
- providing a fluid to the fluid inlet;
- applying a first downward force on the pilot plug via the stem;
- unseating the pilot plug from the inner wall;
- allowing a portion of the fluid to communicate from the fluid inlet through the flow passage;
- applying a second downward force on the pilot plug via the stem to move the pilot plug downward;
- contacting at least one of an upper surface of the interior wall of the plug or the web with the contact member;
- unseating the plug from the seat;
- translating the plug downward to expose at least a portion of the at least one cage port;
- and
- allowing a portion of the fluid to communicate between the fluid inlet and the at least one cage port through the web.
16 more elements
A method of regulating fluid with a valve, comprising:
- providing a valve in fluid communication with a fluid inlet and a fluid outlet, the valve comprising:
- a body comprising a gallery in fluid communication with the fluid inlet and the fluid outlet, the gallery being closed at a first end with a bonnet;
- a cage disposed within the gallery, the cage comprising at least one cage port there through;
- a plug movably disposed within the cage, the plug comprising an outer wall and an inner wall, the outer wall of the plug disposed adjacent the cage port;
- a stem extending through the flow passage;
- an inboard end of the stem disposed in a lower portion of the flow passage, an outboard end of the stem extending through the cage and an aperture in the bonnet to an exterior of the body;
- a pilot plug comprising at least one aperture there through, the pilot plug coupled to the inboard end of the stem, the pilot plug disposed in the lower portion of the flow passage;
- at least one bolt secured to the plug through the aperture of the pilot plug;
- and
- a seat adjacent a bottom surface of the cage, the plug in contact with the seat;
- providing a fluid to the fluid inlet;
- applying a first downward force on the pilot plug via the stem;
- unseating the pilot plug from the inner wall;
- allowing a portion of the fluid to communicate from the fluid inlet through the flow passage;
- applying a second downward force on the pilot plug via the stem to move the pilot plug downward;
- contacting the bolt coupled to the plug through the aperture of the pilot plug with a bottom surface of the pilot plug;
- unseating the plug from the seat;
- translating the plug downward to expose at least a portion of the at least one cage port;
- and
- allowing a portion of the fluid to communicate between the fluid inlet and the at least one cage port through the web.
17 more elements
Dependencies are inferred from the claim text.