Bi-directional seal assembly for use with valves
AssigneeFisher Controls International LLC
InventorWayne Russell Faas
Life of this patent
Estimating the term…
Abstract
Seal assemblies for use with fluid valves are described. An example seal assembly includes a first seal and a second seal opposite the first seal. The first and second seals are to sealingly engage a closure member of a valve and a sealing surface opposite the closure member. A spacer ring is disposed between the first and second seals to prevent the first and second seals from contacting each other. The spacer ring has an aperture therethrough to enable pressurized fluid to flow from a first side of the spacer ring and a second side of the spacer ring opposite the first side.
Claims20
A seal assembly for use with valves, comprising:
- a first seal and a second seal opposite the first seal, the first and second seals to sealingly engage a closure member of a valve and a sealing surface opposite the closure member;
- and
- a spacer ring disposed between the first and second seals to prevent the first and second seals from contacting each other, the spacer ring having an aperture therethrough to enable pressurized fluid to flow from a first side of the spacer ring and a second side of the spacer ring opposite the first side.
A seal assembly for use with fluid valves comprising:
- a first seal having a first leg and a second leg forming a first cavity therebetween;
- a second seal having a third leg and a fourth leg forming a second cavity therebetween;
- and
- a spacer ring disposed between the first and second seals to maintain the first and second seals in spaced apart relation to prevent the first and second seals from contacting each other, the spacer ring being at least partially positioned within the first cavity such that the spacer ring and the first leg define a first portion of the first cavity and the spacer ring and the second leg define a second portion of the first cavity, and the spacer ring being at least partially positioned within the second cavity such that the spacer ring and the third leg define a third portion of the second cavity and the spacer ring and the fourth leg define a fourth portion of the second cavity, the spacer ring including an aperture to enable pressurized fluid to flow between the first and third portions of the respective first and second cavities and the second and fourth portions of the respective first and second cavities.
A seal for use with a valve, comprising:
- first means for sealing and second means for sealing opposite the first means for sealing, the first and second means for sealing to sealingly engage a closure member of a valve and a sealing surface opposite the closure member;
- and
- means for spacing the first means for sealing away from the second means for sealing to prevent the first and second means for sealing from contacting each other, the means for spacing being sized so that the means for spacing does not contact the closure member or the sealing surface, the means for spacing including means for allowing fluid flow through the means for spacing between a first side of the means for spacing and a second side of the means for spacing opposite the first side of the means for spacing.
Dependencies are inferred from the claim text.