Fluid valve apparatus having enclosed seals
AssigneeFisher Controls International LLC
InventorDavid John Koester
Life of this patent
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Abstract
Fluid valve apparatus having enclosed seals are disclosed. An example apparatus includes a seal having an inner core composed of a first material and an outer sheath composed of a second material different than the first material, a carrier having a first portion and a second portion extending from the first portion. The first portion couples to the seal. The second portion clamps between a retainer and a valve body of a fluid valve to couple the seal to the valve body. A first surface of the second portion engages the retainer and a second surface of the second portion opposite the first surface engages the valve body when the second portion of the carrier is clamped between the retainer and the valve body.
Claims20
An apparatus comprising:
- a seal having an inner core composed of a first material and an outer sheath composed of a second material different than the first material;
- and
- a carrier having a first portion and a second portion extending from the first portion, the first portion to couple to the seal, the second portion to be clamped between a retainer and a valve body of a fluid valve to couple the seal to the valve body, a first surface of the second portion is to engage the retainer and a second surface of the second portion opposite the first surface is to engage the valve body when the second portion of the carrier is clamped between the retainer and the valve body.
An apparatus comprising:
- a valve body defining a fluid flow passageway between an inlet and an outlet;
- a flow control member positioned in the fluid flow passageway to control fluid flow between the inlet and the outlet;
- a retainer removably coupled to the valve body;
- and
- a seal assembly positioned between the retainer and the flow control member, the flow control member to engage the seal assembly to restrict or prevent fluid flow through the fluid flow passageway, the seal assembly including:
- a seal;
- and
- a carrier coupled to the seal, the carrier to enable the seal to compress or deflect when the flow control member engages the seal, the carrier to urge the seal radially inward toward a center of the fluid flow passageway and toward a sealing edge of the flow control member to provide a sufficiently tight seal between the seal and the sealing edge of the flow control member, the carrier having a first end and a second end, the first end being coupled to the seal and the second end being clamped between the retainer and the valve body.
An apparatus comprising:
- a flow control member positioned between an inlet and an outlet of a fluid flow passageway of a fluid valve;
- a retainer removably coupled to a valve body of the fluid valve;
- and
- a seal assembly positioned within the fluid flow passageway, the seal assembly including:
- a seal having an annular ring composed of a first material and an outer sheath composed of a second material different than the first material;
- and
- a carrier coupled to the seal, the carrier having a first portion to support the seal and a second portion to be clamped between the retainer and the valve body to suspend the seal in the fluid flow passageway adjacent a sealing surface of the flow control member.
Dependencies are inferred from the claim text.