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US 2019/0376616 A1Published application
Valve assemblies, valve packing assemblies and related systems and methods
AssigneeFlowserve Management Company
InventorRichard J. Gradle
Life of this patent
Estimating the term…
Abstract
Valve stem packing assemblies may include at least one end ring and at least one sealing ring. The at least one end ring may include an inner ring and an outer ring. Valves include a valve body, a valve stem, and a valve stem packing assembly.
Claims20
A valve packing assembly, comprising:
- a first end ring comprising a first inner ring and a first outer ring wherein the first inner ring and the first outer ring comprise a first metal material, the first end ring configured to position the first inner ring adjacent to a movable valve stem and to position the first outer ring away from the movable valve stem;
- a second end ring comprising a second inner ring and a second outer ring, the second end ring configured to position the second inner ring adjacent to the movable valve stem and to position the second outer ring away from the movable valve stem, wherein the second inner ring and the second outer ring comprise a second metal material;
- and
- at least one sealing ring configured to be positioned between the first end ring and the second end ring.
1 more element
A valve assembly, comprising:
- a valve body;
- a valve stem extending from the valve body;
- and
- a valve stem packing comprising a plurality of annular rings configured to form a seal about the valve stem, wherein the plurality of annular rings comprises at least one metallic end ring comprising an inner ring and an outer ring and at least one sealing ring positioned adjacent the inner ring and the outer ring of the at least one metallic end ring.
1 more element
A valve assembly comprising:
- a valve body;
- a valve stem connected between the valve body and a valve element configured to alter fluid flow through the valve body;
- and
- a valve stem packing comprising:
- at least one sealing ring disposed in a cavity defined around the valve stem in the valve body;
- and
- at least one end ring located in the cavity adjacent to the at least one sealing ring and configured to at least partially retain the at least one sealing ring within the cavity, the at least one end ring comprising an inner ring positioned proximate to the valve stem and an outer ring positioned at a location axially spaced and separated from the valve stem.
4 more elements
Dependencies are inferred from the claim text.