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US 12,359,747 B2Granted
Valve packing apparatus and related methods
AssigneeFisher Controls International LLC
InventorsLucas Schmitt, Steven Hostetter, Aaron Anderson, Lisa Miller
Life of this patent
Estimating the term…
Abstract
Methods, apparatus, systems, and articles of manufacture of valve packing apparatus and related methods are described. An apparatus includes a cartridge including packing components and a spring. The cartridge is dimensioned to fit in a bore of a bonnet of a valve. A cap is coupled to the cartridge to retain the packing components and the spring. The cap is to compress the packing components and the spring to a predetermined load in response to the cartridge being fastened to the bonnet of a valve.
Claims20
An apparatus to install a valve packing comprising:
- a cartridge dimensioned to fit in a bore of a bonnet of a valve, the cartridge including:
- packing components;
- a first flange;
- and
- a spring;
- a cap coupled to the cartridge to retain the packing components and the spring, the cap movable relative to the cartridge between a first position and a second position, the cap including a body defining a cavity and a second flange, the spring at least partially positioned in the cavity of the cap when the cap is coupled to the cartridge, the first flange spaced from the second flange in the first position, the first flange abutting the second flange in the second position, the cap to compress the packing components and the spring to a predetermined load in the second position, the cap having a wall portion that includes an aperture to receive a stem of the valve;
- and
- a spring follower to maintain alignment of the spring when inserting the stem of the valve into the aperture of the cap, the spring extending between the wall portion and the spring follower, at least a portion of the spring follower positioned within the cavity of the cap.
5 more elements
An apparatus to install a valve packing comprising:
- a cylindrical tube having a first end and a second end, the cylindrical tube having an outer surface dimensioned to fit within a bore of a valve, the cylindrical tube including a first flange;
- a spring disposed proximate the first end of the cylindrical tube;
- packing components disposed within the cylindrical tube adjacent the spring;
- a cap to retain the packing components and the spring within the cylindrical tube, the cap defining a cavity and an annular slot formed on an inner surface of the cap defining the cavity, the annular slot defining a first shoulder and a second shoulder spaced from the first shoulder, the cap movable relative to the cylindrical tube between a first position and a second position;
- and
- a retaining ring to couple the cap and the cylindrical tube, the retaining ring to engage the first shoulder of the cap when the cap is in the first position, the retaining ring to engage the second shoulder of the cap when the cap is in the second position.
3 more elements
An apparatus to install a valve packing comprising:
- means for sealing a valve stem;
- means for housing the means for sealing;
- means for biasing the means for sealing;
- means for maintaining alignment of the means for biasing prior to an insertion of the valve stem of a valve into the means for housing, at least a portion of the means for maintaining alignment to be disposed between the means for biasing and the valve stem of the valve;
- and
- means for compressing having means to receive at least a portion of the means for biasing, the means for compressing coupled to the means for housing, the means for biasing extending between the means for compressing and the means for maintaining alignment, the means for compressing movable relative to the means for housing between a first position and a second position to adjust a compression force of the means for biasing;
- and
- means for retaining to slidably couple the means for compressing and the means for housing, the means for retaining fixed to the means for housing and slidably coupled to the means for compressing, the means for retaining to engage means for limiting slidable movement of the means for compressing to limit movement of the means for compressing between the first position and the second position relative to the means for housing.
5 more elements
Dependencies are inferred from the claim text.