Multi-piece flow control apparatus for use with fluid valves
AssigneeFisher Controls International LLC
InventorMichael Wildie McCarty
Life of this patent
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Abstract
Multi-piece flow control apparatus for use with fluid valves are described. An example flow control apparatus described herein includes a sleeve having first and second ends, the first end including a lip. A valve plug tip is disposed in the sleeve and has a shoulder engaged with an inner surface of the lip. An insert is disposed in the second end of the sleeve and engaged with the valve plug tip to urge the shoulder of the valve plug tip against the inner surface of the lip. The insert has an opening to receive a stem of the valve.
Claims17
A flow control member, comprising:
- a sleeve of a rotary valve having first and second ends, the first end including a lip, the lip defining an inner surface;
- an insert disposed in the second end of the sleeve and defining an axis along the length of the insert, the insert and the sleeve defining a first threaded interface therebetween;
- a valve stem, the valve stem and the insert defining a second threaded interface therebetween;
- and
- a valve plug tip disposed in the sleeve and having a flange defining a shoulder, the shoulder and the inner surface perpendicular to the axis, wherein the insert has a first contact surface to engage a second contact surface of the valve plug tip to urge the shoulder of the valve plug tip against the inner surface of the lip.
A flow control apparatus comprising:
- a cylindrical housing having first and second ends, the first end having a lip defining an inner surface;
- a valve plug tip disposed in the cylindrical housing and having a flange defining a shoulder;
- and
- an insert disposed in the cylindrical housing defining an axis along a length of the insert, the shoulder and the lip perpendicular to the axis, the insert to capture the valve plug tip between an inner surface of the cylindrical housing and the insert a first surface of the insert to engage a second surface of the valve plug tip to urge the shoulder against the inner surface of the lip to provide a compressive force to the valve plug tip along a direction of the axis, wherein the flow control apparatus is part of a rotary valve.
A flow control apparatus, comprising:
- means for controlling fluid flow through a rotary valve, wherein the means for controlling fluid flow comprises a valve plug tip;
- means for retaining the means for controlling fluid flow;
- and
- means for transmitting force to the means for controlling fluid flow, the means for transmitting force threadably coupled to the means for retaining and a stem of the rotary valve, wherein the means for transmitting force contacts a portion of the means for controlling fluid flow to cause a first surface of the means for controlling fluid flow to be urged against a second surface of the means for retaining, wherein the first and second surfaces are perpendicular to an axis defined along a length of the means for transmitting force.
A flow control member for a valve, comprising:
- a sleeve having first and second ends, the first end including a lip, the lip defining an inner surface;
- an insert disposed in the second end of the sleeve and defining an axis along the length of the insert;
- and
- a valve plug tip disposed in the sleeve and having a flange defining a shoulder, the shoulder and the inner surface perpendicular to the axis, wherein the insert has a first contact surface to engage a second contact surface of the valve plug tip to urge the shoulder of the valve plug tip against the inner surface of the lip to provide a compressive force to the valve plug tip along a direction of the axis, wherein the valve comprises a rotary valve.
Dependencies are inferred from the claim text.