Low-torque disc for a multiple orifice valve
AssigneeCameron International Corporation
InventorsScott A. Miller, Ghulam A. Barkatally, Jerry A. Martino, Declan Elliott, Andrew Twining
Life of this patent
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Abstract
A disc for a multiple orifice valve includes a disc body and a disc orifice extending through the disc body. A disc surface of the disc body includes a recessed portion and a raised portion that at least partially circumferentially surrounds the recessed portion. The recessed portion is configured not to contact an opposed disc when the disc is assembled within a housing of the multiple orifice valve, and the raised portion is configured to contact the opposed disc when the disc is assembled within the housing of the multiple orifice valve.
Claims19
A method of operating a multiple orifice valve, the method comprising:
- rotating a first disc comprising one or more first orifices relative to a second disc comprising one or more second orifices, wherein rotating the first disc comprises rotating the first disc between a first position in which the one or more first orifices at least partially overlap the one or more second orifices to enable flow of a fluid through the multiple orifice valve and a second position in which the one or more first orifices do not overlap the one or more second orifices to block flow of the fluid through the multiple orifice valve;
- and
- flowing the fluid into a recessed portion formed across a center portion in a first disc surface of the first disc to reduce friction between the first disc and the second disc.
A method of operating a multiple orifice valve, the method comprising:
- rotating a first disc comprising one or more first orifices relative to a second disc comprising one or more second orifices to throttle a fluid through the multiple orifice valve;
- forming a metal-to-metal seal between a raised portion of a first disc surface of the first disc and a second disc surface of the second disc;
- and
- flowing the fluid through one or more channels into a recessed portion extending across a center portion of the first disc surface of the first disc.
A method of operating a multiple orifice valve, the method comprising:
- flowing a fluid from an upstream end of a housing to a downstream end of the housing through one or more first orifices of a first disc and one or more second orifices of a second disc while the first disc is in a first position relative to the second disc;
- and
- blocking flow of the fluid from the upstream end of the housing to the downstream end of the housing by aligning a raised portion of a first disc surface of the first disc with the one or more second orifices of the second disc to form a seal about the one or more second orifices of the second disc while the first disc is in a second position relative to the second disc;
- wherein the fluid flows into a recessed portion formed in a center portion of the first disc surface of the first disc.
Dependencies are inferred from the claim text.