AU2003210543A1 - Ball valve with single piece packing - Google Patents

Ball valve with single piece packing

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Publication number
AU2003210543A1
AU2003210543A1 AU2003210543A AU2003210543A AU2003210543A1 AU 2003210543 A1 AU2003210543 A1 AU 2003210543A1 AU 2003210543 A AU2003210543 A AU 2003210543A AU 2003210543 A AU2003210543 A AU 2003210543A AU 2003210543 A1 AU2003210543 A1 AU 2003210543A1
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AU
Australia
Prior art keywords
valve
packing
valve element
ball
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
AU2003210543A
Other versions
AU2003210543B2 (en
Inventor
Brandon J Fry
James E Gotch
Eric M Kvarda
Thomas A Lippucci
Jared S Timko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swagelok Co
Original Assignee
Swagelok Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swagelok Co filed Critical Swagelok Co
Priority claimed from PCT/US2003/001351 external-priority patent/WO2003062683A1/en
Publication of AU2003210543A1 publication Critical patent/AU2003210543A1/en
Application granted granted Critical
Publication of AU2003210543B2 publication Critical patent/AU2003210543B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Description

BALL VALVE WITH SINGLE PIECE PACKING Related Applications
This application claims the benefit of United States Provisional patent application serial number 60/349,629 filed on January 18, 2002 for BALL VALVE WITH SINGLE PIECE PACKING, the entire disclosure of which is fully incorporated herein by reference.
Technical Field Of The Invention The subject invention relates in general to ball valves. More particularly, the invention relates to a new ball valve design and packing concepts that improve valve performance under higher and lower rated operating temperatures and thermal cycling. Background of the Invention
Ball valves are well known in the art, and a highly successful commercially available ball valve is described in United States Patent No. 4,685,488 issued to Corbin et al. and owned by the assignee of the present invention, the entire disclosure of which is fully incorporated herein by reference. Ball valves that use polymers for the ball packing material are usually limited in their rated or specified high and low temperature operating ranges at rated pressure. This is because the packing material expands and contracts at a different rate than other valve components which typically are made of stainless steel. At higher temperatures the packing material softens and tends to flow or creep and may become permanently deformed or otherwise damaged during valve actuation at higher temperature. This damage to the packing can result in leakage, especially when the valve returns to ambient temperature. At colder temperatures, the packing material becomes harder and stiffer and there may also, in some cases, be a decreased sealing stress on the packing due to packing shrinkage at lower temperatures. This loss of stress can produce leakage at lower temperatures. Although it is known to incorporate live load packing techniques into ball valves to increase the rated operating temperature range of the valve, the overall improvement is still limited by the temperature response characteristics of the packing material itself.
The need continues to exist for a ball valve having a polymer type ball packing material with increased rated operating temperature range and temperature cycling performance at rated pressure.
Summary of the Invention
The present invention contemplates a ball valve arrangement in which a single piece packing may be installed onto a valve element within a temperature range so that the mechanical properties of the packing material are substantially unchanged. The present invention further contemplates methods of assembly. Still further the invention contemplates a valve element and packing wherein various dimensions are selected to improve the rated operating temperature range and cycle life of the valve such as by reducing the volume of packing material and providing a more uniform distribution of load on the packing after installation into the valve.
Various aspects of the invention may optionally be used with a multi -piece packing. Still further, the invention contemplates a ball and trunnion design that allows a ball valve element to axially float or shift when the valve element packing expands and contracts under temperature changes.
Another aspect of the invention relates to the use of a live load applied to the valve element packing in combination with the axial float of the valve element.
These and other aspects and advantages of the invention will be readily understood and more fully described in the following detailed description of various embodiments and alternatives of the invention when read in view of the accompanying drawings.
Brief Description Of The Drawings Fig. 1 is an isometric cross-section view of a ball valve incorporating various aspects of the present invention (valve illustrated in open position); Fig. 2 is a vertical cross-section in elevation of the valve of Fig. 1 ; Fig. 3 illustrates a valve element in accordance with the invention in elevation; Fig. 4 is an exploded isometric of a single piece packing and support rings used in the embodiment of Fig. 1;
Fig. 4A is a partial cross-section of the packing of Fig. 4; Fig. 5 is an isometric cutaway of another embodiment of the invention with a third flow port added; and
Fig. 6 is an isometric cutaway of another embodiment of the invention using a non- spherical ball valve element.
Detailed Description Of The Invention With reference to the drawings, the present invention contemplates a ball valve design with improved temperature performance ratings at rated pressure. The improved temperature performance includes higher and lower rated or specified temperature ranges, as well as under thermal cycling. The present invention is described herein with reference to a particular ball valve design, however, those skilled in the art will readily appreciate that the various aspects of the invention may be incorporated into different ball valve configurations. Furthermore, while the exemplary embodiment herein includes several different aspects of the invention, the invention should not be construed in a limiting sense. Rather, some or all of the aspects and features of the present invention may be incorporated into a ball valve design either individually or in various combinations or sub-combinations and still be within the scope and spirit of the present invention as set forth in the appended claims. Furthermore, while various alternative embodiments may be described herein, such description is not intended to be an exhaustive list of every alternative embodiment that may be readily apparent to those skilled in the art in view of the teachings herein. The present invention contemplates alternative embodiments within the scope of the appended claims, whether expressly described herein or not. Although the exemplary embodiment illustrates a single piece or unitary packing, various aspects of the invention may also be utilized with multi-piece packings.
Various aspects of the present invention then are illustrated in the drawings as being embodied in a ball valve 10 having a valve body 12 with appropriate end fitting connections 14 and 16 for installing the valve 10 in a fluid circuit. Respective bores 18a and 18b extend from each end fitting connection 14, 16 through the valve body 12 and open to a central ball receiving valve cavity 20 formed therebetween in the valve body 12. A valve element assembly 22 is disposed partly within and extends from the valve cavity 20. The valve element assembly 22 includes a flow control ball 24 that is preferably but not necessarily machined integral with a valve actuator stem 26. The ball 24 has a central fluid passageway or bore 27 machined therethrough and forms openings or stem orifices 27a and 27b that align with the valve body bores 18a and 18b to permit fluid flow therebetween when the valve is in the open position illustrated in the drawings. When the stem 26 and ball 24 are rotated to a position such that the orifices 27a and 27b are out of alignment with the valve body bores 18a, 18b, the valve is in a closed position and fluid flow is blocked. For example, the valve 10 may be closed by a ninety degree (quarter-tum) rotation of the ball 24.
The valve stem 26 extends through an optionally externally threaded integral bonnet 12a of the valve body 12. The stem 26 may either include a handle (not shown) for manual actuation or may be coupled to a valve actuator (not shown) such as an electric or pneumatic or hydraulic actuator, for example. Rotation of the stem 26 about its longitudinal axis X causes rotation of the ball 24 within the valve cavity 20 to open and close the valve.
The valve stem 26 further includes an upper trunnion 28 and a lower trunnion 30. The upper and lower trunnions 28, 30 along with a valve packing 32, help to align and journal the valve element 22 within the valve cavity 20. In accordance with one aspect of the invention, at room temperature a rather close or interference fit is provided between the internal surface of the packing 32 and the outside surfaces of the ball 24 and the trunnions 28, 30. Additionally, after the valve element assembly 22 is installed and fully compressed in the valve body cavity 20, there is at room temperature an interference fit between the outer surface of the packing 32 and the surface of the cavity 20 both in the spherical portion surrounding the ball as well as the portions that receive the trunnions. These diametrical and trunnion interference fits provide for a greater and more evenly distributed sealing force or pressure between the packing 32 and the stem surfaces 24, 28 and 30 (i.e. the ball and trunnion surfaces) with less live loading required on the packing 32 as compared to prior art valves.
In accordance with one aspect of the invention, the valve packing 32 provides a fluid tight seal between the stem surfaces 24, 28 and 30 and the valve body 12. The packing 32 is stationary, in this embodiment, relative to rotation of the valve stem 26 and ball 24 during valve actuation. In its preferred but not exclusive form, and with reference to Fig. 4, the packing 32 is a single piece packing meaning that the packing is a unitary structure that is press fit assembled with the valve stem 26 to form the valve element assembly 22 prior to installing the valve element assembly 22 in the valve body 12. The packing 32 is preferably although not necessarily made of perfluoroalkoxy (PFA) material and may be made by conventional machining or molding processes. Other suitable materials for the packing 32 include but are not limited to ultra-high molecular weight polyethylene, PTFE (polytetrafluoroethylene) and variants of PTFE such as filled PTFE, polyetheretherketone (PEEK), filled PFA or fluorinated ethylene propylene. In some applications it may also be desirable to over-mold the single piece packing in place on the trunnions and ball.
The single piece packing 32 is generally cylindrical in shape and includes a central longitudinal bore 50. This bore 50 is sized relative to the outer diameter of the ball 24 and the trunnions 28, 30 so as to have an interference fit therewith at room temperature but at the same time to be able to be snap or press fit assembled at room temperature over the ball 24 and trunnions 28, 30 using an appropriate tool. As best illustrated in Fig. 4A, the packing interior surface 51 is formed with a contour or profile that generally conforms to the stem profile, in particular the ball 24 and the trunnions 28, 30. Thus, in the embodiment wherein the valve element is a spherical ball, the interior surface 51 is generally spherical and sized to have an interference fit with the ball 24. The upper and lower portions 53 and 55 of the interior portion of the packing 32 are cylindrical to conform with and appropriately sized to have an interference fit with the upper and lower trunnions 28, 30 respectively. It should be noted however, that the valve element need not be a spherical ball as in the drawings herein, but may have other profiles such as an oval "football" shape or other profile suitable to a particular application. Fig. 6 herein illustrates an example of such a valve element profile. In such cases, the packing 32 will be made to have a generally conforming profile. Furthermore in some applications the interior surface 51 need not strictly conform to the shape or profile of the stem prior to installation of the stem into the packing, but upon final compressed assembly into the valve body will substantially conform to the stem profile so as to adequately seal the ball and trunnions. The packing 32 further includes a number of openings 52a-d formed in the cylindrical wall 54 of the packing 32. Pairs of these openings, for example 52a/52d or 52b/52c are diametrically opposed to each other so as to concentrically align with the orifices 27a and 27b of the ball 24. In the illustrated example, openings 52b and 52c align with the passageway 27 when the valve is in the closed position and openings 52a and 52d align with the passageway 27 when the valve is in an open position. The lower port 50a of the bore 50 may also be used as an opening to a bottom mounted port formed in the stem 26, as illustrated in Fig. 5 and as will be described hereinafter.
For the openings that are used for fluid flow when the valve 10 is in the open position (for example, openings 52a and 52d in Fig. 4), support rings 42, 44 may be provided that are slip fit inserted into these openings. The support rings 42, 44 include through holes 42a and 44a respectively for permitting fluid flow therethrough when the valve 10 is in its open position. The support rings 42, 44 support the packing 32 in the area of the openings 52 to prevent extrusion of the packing into the passageway 27 or the ports 27a and 27b. To enhance this effect, the support rings 42, 44 may be provided with internal flats 62 that generally align with the X axis when the rings are installed in the packing. These flats increase the rigidity of the support rings to increase their support of the packing material under load.
Each of the openings 52a-d may include an internal circumferentially raised lip 64. This lip prevents a support ring 42, 44 from inadvertently contacting the ball 24 outer surface when the stem 26 is rotated. When various of the openings 52 (such as, for example, opening 52c or 52b) are not to be used for a particular valve configuration (for example, only two of the openings 52 are used for a two port valve) each such unused opening is plugged with a suitable disk or plug 60 (Fig. 4). Each disk 60 slip fits into its respective opening 52. The disks 60 support the packing 32 against cold flow extrusion and creep in the region of the passageway 27. The disks 60 (and the support rings 42, 44) may be made of any suitable material, such as for example, stainless steel, and preferably but not necessarily are curved or otherwise shaped to conform on their outside surface to the outside profile of the packing 32, and on their inside surface to conform to the inside profile of the packing 32 (note in the illustrated embodiment that the packing 32 has a cylindrical outside surface profile and both a spherical portion and cylindrical portion to its inside surface profile). The disks 60 sit against the inner lip 64 in the respective opening 52 so as not to contact the ball surface.
In order to install the packing 32 onto the valve element 22 (other than for an over- molded process), the packing 32 is assembled with the integral ball and stem by press fit, snapped or otherwise slipped into place on the stem 26 over the upper or lower trunnion 28, 30 and over the outer surface or diameter of the ball 24 which necessarily is larger in diameter than either trunnion 28, 30. If the packing 32 is thus too bulky, it will be too stiff and inflexible at room temperature to slip onto the ball 24 to the position illustrated in the drawings. In accordance then with one aspect of the invention, the valve element 22 is machined so that the diameter Dl of the ball 24 is only slightly greater than either or both of the respective diameters D2, D3 of the trunnions 28, 30 (see Fig. 3). The trunnion diameters D2 and D3 may be the same or different depending on the selected valve design.
In prior art ball valves, the trunnion to ball diameter ratio (either D2/D1 or D3/D1) typically is 0.3-0.65. In accordance with the invention the ratio should be preferably about 0.7 to about 0.9 and more preferably about .70 to about .76. This substantially higher ratio (enlarged trunnion relative to the ball diameter) substantially reduces the mass volume of the packing 32 because there is less gap between the trunnions and the valve body cavity 20. The reduced mass volume of the packing 32 also allows the packing 32 to be more flexible at room temperature thus allowing the packing 32 to be snap fit or press fit onto the valve element 22 at room temperature. Since the ball 24 is only slightly larger than the trunnions 28, 30, the more flexible packing 32 can easily be installed onto the valve element 22 at room temperature prior to installing the valve element 22 into the valve body 12. This greatly simplifies assembly thus reducing assembly time and cost.
As used herein, by "room temperature" is simply meant that range of temperatures within which the packing material is not significantly changed in terms of the packing material's properties such as elasticity characteristics. An exemplary but not required range for room temperature assembly is about 65-100 °F. In other terms, "room temperature" is that range of temperatures in which the packing remains substantially in its normal condition without substantially altering the mechanical properties of the packing material such as, for example, its elasticity. It is noted at this point that an alternative process for providing a single piece packing on a valve stem/ball/trunnion element is to over-mold the packing in place. In other words, directly mold the packing onto the stem using conventional molding techniques. An over-mold process eliminates the assembly step of slipping the packing 32 into position on the stem. However, other benefits and aspects of the present invention that result in a reduction in packing mass volume may also be realized with a single piece packing that is over-molded in place.
Completing the description of the valve 10 structure, a packing gland 34 is provided axially adjacent the valve packing 32 upper surface. This packing gland 34 may be made of stainless steel for example, and functions to help contain the packing 32 at elevated temperatures and also serves as a thrust washer for live loading the packing 32. The diametric clearance between the inside diameter of the gland 34 and the outside diameter D2 of the upper trunnion 28, as well as the diametric clearance between the outside diameter of the gland 34 and the body cavity 20 diameter, are controlled so that the gland 34 contains the packing 32 thereby reducing or minimizing creep or extrusion at elevated temperatures, as well as to function as a thrust washer to load the packing 32. A number of disk springs 36 or other suitable load applying members are axially stacked (with reference to the longitudinal axis X of the stem 26) and compressed against the gland 34. The load members 36 apply a live load to the gland 34 and the packing 32 so as to maintain adequate sealing compression of the packing 32 at higher and lower temperatures. By "live load" is meant that the load members 36 continue to apply a load force against the gland 34 and the packing 32 when the valve is operated at a temperature above or below room or ambient temperature. The load members 36 are compressed and held in place by a threaded packing bolt 38 that is threadably installed in the upper or stem receiving extension 12a of the valve body 12.
The lower trunnion 30 axially extends below the bottom 32a of the packing 32 into a counterbore 40 formed in the valve body 12. Preferably there is a close clearance fit between the lower trunnion 30 and the diameter of the counterbore 40. This close clearance fit helps to contain the lower portion of the packing 32 against creep or extrusion, maintains contact stress between the packing 32 and the ball 24, and maintains contact stress between the packing 32 and the roughened surface of the valve cavity 20 (roughened, for example, by abrasion sand blasting) to prevent the packing 32 from rotating within the valve body 12 during valve actuation. The lower portion packing 32a containment reduces packing stress relaxation at non-ambient and particularly lower temperatures. The upper and lower packing containment features allow the valve element 22 to axially move to compensate for packing 32 expansion and contraction over thermal cycles. The packing 32 openings 52a and 52d concentrically align respectively with the ball fluid passageway stem orifices 27a and 27b when the valve 10 is in the fully open position. At the orifices 27a and 27b the retaining or support rings 42, 44 and disks 60 are positioned within the packing 32 openings 52a-d and help contain the packing 32 to prevent extrusion of packing material into the ball passageway 27 and orifices 27a and 27b. The valve is assembled as follows. The support rings 42, 44 and disks 60 when appropriate are inserted into the packing 32 openings 52a-d. The rings and disks thus also help support the packing 32 during the assembly process. The packing 32 is then installed on the valve stem 26 as described herein above. The valve element assembly 22 that includes the ball/stem 24/26, the one piece packing 32 and the support rings 42, 44 (and disks 60 when used) is installed into the valve cavity 20 of the valve body 12. A suitable tool may be used to align and compress the assembly 22 as it is inserted into the valve body. The gland 34 and the load members 36 are either installed with the packing 32 prior to installation of the valve element assembly into the valve body 12 or may be installed after the valve element assembly is installed in the valve body. The packing bolt 38 is then screwed into the valve body stem extension 12a to complete the assembly. The bolt 38 is tightened to a suitable torque or number of turns to effect the desired load on the packing 32.
In accordance with another aspect of the invention, reducing the packing volume or amount of material that comprises the single piece packing, can be realized by reducing the packing height ("H" in Fig. 3) to the packing outside diameter D4 ratio (H/D4). In Fig. 3 the packing height is noted "H". This results in less packing material for the packing 32, in a manner similar to increasing the trunnion to ball diameter ratio described hereinabove. With less packing material needed to adequately seal the valve, there is less adverse effects noted from temperature variations at high and low temperature and thermal cycling. In a typical prior art ball valve the packing height to packing outer diameter ratio was in the range of 0.9 to 1.1 whereas with the present invention the packing height to packing outer diameter ratio is from about 0.75 to about 0.85 with a preferred value of about 0.8. The overall effect of controlling these ratios is that packing volume can be reduced about 15% to about 50% compared to prior art ball valves that use conventional ratios of trunnion diameter to the ball diameter, or packing height to packing outside diameter, thus providing substantially increased thermal performance.
It is important to note that the various ratios described herein may vary depending on the size of the valve. For example, the exemplary ratio ranges for D3/D1 herein are provided for a ball valve element used with a lA inch tubing system. In accordance with the invention then, the ratio D2/D1 or D3/D1 are selected so as to facilitate the assembly of the packing onto the valve element at room temperature. Still further, the ratio of H/D4 is selected so as to reduce the packing volume and thereby increase the thermal performance.
The enlarged trunnion concept provides a more efficient live loading of the packing 32 transmitted through to the lower portion of the packing. In a small trunnion design of the prior art, much of the vertical loading is carried by the ball portion 24 of the valve stem. In contrast, the present invention with the enlarged trunnion diameter focuses the live load toward loading the packing and transmitting that load and resulting packing sealing stress to the lower portion of the packing, thereby providing a much more evenly distributed and effective loading stress to maintain a seal.
We have discovered that in some situations the support rings 42, 44 can crush vertically either from thermal expansion or excessive loads applied during assembly after, for example, packing servicing. Improved resistance to vertical crushing is realized in accordance with the invention by providing the vertical flats 62 to the inside diameter of the support rings 42, 44. The flats should be vertically aligned with the centerline (X axis in the drawings) of the valve 10. These flats may also function as orientation guides to assure proper orientation of the rings during installation. A recessed groove or other suitable marking 63 may be used on the disks 60 to assure proper orientation of the disks 60.
To prevent clipping of the packing material by the edge of the stem orifices 27a and 27b during valve actuation (ball rotation), preferably but not necessarily, an edge break is provided around each of the stem orifices 27a, 27b. In accordance with another aspect of the invention, it will be noted that the stem 26 and integral ball 24 are axially (along the X axis) unconstrained by use of the live load disk springs 36 and the lower counterbore 40. The stem 26 thus is free to shift under temperature variations that cause expansion and contraction of the packing 32. This helps maintain a consistent and effective load on the packing 32. Fig. 5 illustrates another embodiment of a valve 68 that incorporates the present invention. In this example, a bottom port (not shown) is formed in the ball 24 that is in fluid communication with a third fitting 70. The other elements of the valve may be the same as in the above described embodiments.
The invention has been described with reference to the preferred embodiment. Modifications and alterations will occur to others upon a reading and understanding of this specification. It is intended to include all such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (34)

CLAIMS WE CLAIM:
1. A valve comprising: a valve body having a valve cavity therein; a valve element for controlling flow through the valve based on rotational position of the valve element about an axis; and a single piece packing that surrounds said valve element and seals said valve element within said valve cavity; said single piece packing being dimensioned to be installed on said valve element within a room temperature range.
2. The valve of claim 1 wherein said room temperature range is about 65-100 °F.
3. The valve of claim 1 wherein said packing has a generally cylindrical outer surface defined by a height H and an outer diameter D4, said packing having a ratio H/D4 of about 0.75 to about 0.85.
4. The valve of claim 3 wherein said ratio H/D4 is about 0.8.
5. The valve of claim 1 wherein said valve element comprises a ball and adjacent upper and lower trunnions; said ball having an outer diameter Dl and at least one of said trunnions having an outer diameter D3; wherein said valve element has a ratio D3/D1 of about 0.7 to about 0.9.
6. The valve of claim 5 wherein said ratio D3/D1 is about 0.8.
7. The valve of claim 1 wherein said packing has a generally cylindrical outer surface defined by a height H and an outer diameter D4, said packing having a ratio H/D4 of about 0.75 to about 0.85; and wherein said valve element comprises a ball and adjacent upper and lower trunnions; said ball having an outer diameter Dl and at least one of said trunnions having an outer diameter D3; wherein said valve element has a ratio D3/D1 of about 0.7 to about 0.9.
8. The valve of claim 7 wherein said ratio H/D4 is about 0.8 and said ratio D3/D1 is about 0.8.
9. The valve of claim 1 wherein said packing comprises a polymer.
10. The valve of claim 9 wherein said polymer is selected from the group comprising polytetrafluoroethylene (PTFE), polyethylene, polyetheretherketone (PEEK) and fluorinated ethylene propylene.
11. The valve of claim 1 wherein said valve element comprises a non-spherical flow control element.
12. The valve of claim 1 wherein said packing has an inner surface that forms an interference fit with said valve element when said packing is installed thereon prior to loading said packing within said valve body.
13. The valve element of claim 1 wherein said packing has an interference fit with said valve cavity when said packing is installed on said valve element and inserted into said valve cavity prior to loading said packing within said valve cavity.
14. A method for assembling a valve comprising the steps of: forming a one piece packing adapted to seal a valve element within a valve cavity; and installing said packing onto said valve element within a temperature range for which mechanical properties of the packing are substantially unchanged.
15. The method of claim 14 wherein said step of forming said packing comprises the step of machining said packing.
16. The method of claim 14 wherein said temperature range is selected so that the mechanical properties of the packing material are substantially unchanged as compared to the mechanical properties of the packing material at 70 °F.
17. A valve comprising: a valve body having a valve cavity therein; a valve element for controlling flow through the valve based on rotational position of the valve element about an axis; and a packing that surrounds said valve element and seals said valve element within said valve cavity; and said valve element comprising a ball and adjacent upper and lower trunnions; said ball having an outer diameter Dl and at least one of said trunnions having an outer diameter D3; wherein said valve element has a ratio D3/D1 of about 0.7 to about 0.9.
18. The valve of claim 17 wherein said packing has a generally cylindrical outer surface defined by a height H and an outer diameter D4, said packing having a ratio H/D4 of about 0.75 to about 0.85.
19. The valve of claim 17 wherein said packing comprises a polymer that is selected from the group consisting of: PFA, filled PFA, polytetrafluoroethylene (PTFE), filled PTFE, polyethylene, polyetheretherketone (PEEK) and fluorinated ethylene propylene.
20. The valve of claim 17 wherein said packing is dimensioned to be installed on said valve element at a temperature below which said packing deforms.
21. The valve of claim 20 wherein said temperature is room temperature.
22. The valve of claim 17 wherein said packing is a single piece packing.
23. The valve of claim 17 wherein said packing is over molded onto said valve element.
24. A valve comprising: a valve body having a valve cavity therein; a valve element for controlling flow through the valve based on rotational position of the valve element about an axis; and a packing that surrounds said valve element and seals said valve element within said valve cavity; and said valve element comprising a ball and adjacent upper and lower trunnions; wherein said packing has a generally cylindrical outer surface defined by a height H and an outer diameter D4, said packing having a ratio H/D4 of about 0.75 to about 0.85.
25. The valve of claim 24 wherein said ball has an outer diameter Dl and at least one of said trunnions has an outer diameter D3; wherein said valve element has a ratio D3/D1 of about 0.7 to about 0.9.
26. The valve of claim 24 wherein said packing is a single piece packing.
27. The valve of claim 24 wherein said packing is a multi-piece packing.
28. The valve of claim 24 wherein said packing is installed onto said valve element at room temperature.
29. In combination, a valve element and a single piece packing therefore, wherein said packing is installed onto said valve element at room temperature.
30. The combination of claim 29 wherein said valve element comprises a ball and stem and with at least one trunnion adjacent said ball.
31. A valve comprising: a valve body having a valve cavity therein; a valve element for controlling flow through the valve based on rotational position of the valve element about an axis; and a packing that surrounds said valve element and seals said valve element within said valve cavity; said valve element comprising a ball and adjacent upper and lower trunnions; said ball having an outer diameter Dl and at least one of said trunnions having an outer diameter D3; wherein said valve element has a ratio D3/D1 that facilitates assembly of said packing onto said valve element at room temperature.
32. A valve comprising: a valve body having a valve cavity therein; a valve element for controlling flow through the valve based on rotational position of the valve element about an axis; and a packing that surrounds said valve element and seals said valve element within said valve cavity; said valve element comprising a ball and adjacent upper and lower trunnions; said valve cavity being dimensioned to closely receive said valve element while permitting said valve element to axially shift to compensate for temperature effects on said packing.
33. The valve of claim 32 wherein said valve cavity comprises a reduced diameter bore that receives said lower trunnion and prevents packing material from creeping below said lower trunnion.
34. The valve of claim 32 wherein said packing is live loaded.
AU2003210543A 2002-01-18 2003-01-17 Ball valve with single piece packing Ceased AU2003210543B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US34962902P 2002-01-18 2002-01-18
US60/349,629 2002-01-18
PCT/US2003/001351 WO2003062683A1 (en) 2002-01-18 2003-01-17 Ball valve with single piece packing

Publications (2)

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AU2003210543A1 true AU2003210543A1 (en) 2003-09-18
AU2003210543B2 AU2003210543B2 (en) 2007-11-22

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US (4) US7887024B2 (en)
EP (2) EP1626213B1 (en)
JP (1) JP2005515384A (en)
KR (1) KR20040075085A (en)
CN (2) CN101067458B (en)
AT (2) ATE315193T1 (en)
AU (1) AU2003210543B2 (en)
BR (1) BR0306990A (en)
CA (1) CA2473685C (en)
DE (2) DE60330398D1 (en)
HK (1) HK1066849A1 (en)
MX (1) MXPA04006936A (en)
NO (1) NO20043772L (en)
WO (1) WO2003062683A1 (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0306990A (en) 2002-01-18 2004-12-14 Swagelok Co One Piece Gasket Ball Valve
TW200643511A (en) * 2005-06-09 2006-12-16 Horng Terng Automation Co Ltd Adhesive stopper of dispenser
JP2008185113A (en) * 2007-01-29 2008-08-14 Fujikin Inc Ball valve
FR2928937B1 (en) * 2008-03-18 2010-11-26 Altatech Semiconductor DEVICE FOR INTRODUCING A FLUID INTO A CHEMICAL VAPOR DEPOSITION CHAMBER, CORRESPONDING PROCESSING CHAMBER AND USE OF THE CHAMBER.
DE102009051324B4 (en) * 2009-10-29 2018-07-26 Marco Systemanalyse Und Entwicklung Gmbh Selector valve
KR200461033Y1 (en) * 2009-12-04 2012-06-22 하이록코리아 주식회사 Capsulated Packing valve
WO2011112073A1 (en) * 2010-03-08 2011-09-15 Indufil B.V. Ball valve
MX2010003527A (en) * 2010-03-29 2011-09-29 Jose Manuel Solis Figueroa Jicara tap for showering using v-jicara technology.
CA2756459A1 (en) * 2010-10-29 2012-04-29 Eric G. Keifer Variable bore convertible compressor cylinder
US9435440B2 (en) 2012-08-06 2016-09-06 Mécanique Analytique Inc. Valve with a loading varying mechanism, and method of operating the same
JP6041298B2 (en) * 2012-09-26 2016-12-07 株式会社フジキン Ball valve
CN102937193A (en) * 2012-11-16 2013-02-20 镇江市华阳机电制造有限公司 Balance trunnion type connection rod valve spool
CN102943893A (en) * 2012-11-16 2013-02-27 镇江市华阳机电制造有限公司 Connecting rod ball valve with filler automatic compensation function
CN102937194A (en) * 2012-11-16 2013-02-20 镇江市华阳机电制造有限公司 Integral sealed connecting rod ball valve
CN102937195A (en) * 2012-11-16 2013-02-20 镇江市华阳机电制造有限公司 Integral gland packing for connecting rod ball valve
US20150008351A1 (en) * 2013-07-03 2015-01-08 Thomas A. Hartman Ball valve and method of assembling the same
CN103591327B (en) * 2013-11-20 2016-02-03 无锡智能自控工程股份有限公司 High pressure filling selfsealings balance swaged forging formula switching ball
KR101402245B1 (en) 2014-01-07 2014-06-03 (주) 비티엑스 Valve for preventing leak
JP6341363B2 (en) * 2014-01-31 2018-06-13 株式会社フジキン Ball valve
US9897218B2 (en) 2014-02-05 2018-02-20 Mecanique Analytique Inc. Ball valve with load varying mechanism, and method of operating the same
US9476526B2 (en) * 2014-04-09 2016-10-25 Ge Oil & Gas Pressure Control Lp Dual seal fluid fitting
CN105443794B (en) * 2014-09-29 2018-06-26 大唐国际化工技术研究院有限公司 Roof-mounted O-shaped ball valve and its manufacture assembly method
US9506606B1 (en) 2015-05-28 2016-11-29 Fitok Incorporated Fluid diversion device
GB2546322A (en) * 2016-01-15 2017-07-19 Singh Bath Charanjit A device for flushing a system
DE202016103170U1 (en) 2016-06-15 2016-09-05 GULBINAT Systemtechnik GmbH & Co. KG ball valve
CN106195311B (en) * 2016-08-09 2018-10-09 东裕(桐柏)精密金属有限公司 A kind of fire-proof ball valve
US11073216B2 (en) * 2017-01-17 2021-07-27 Fujikoki Corporation Flow channel switching valve and method for assembling the same
CN107701752A (en) * 2017-10-30 2018-02-16 江苏新中信电器设备有限公司 A kind of single piece type ball valve with overall riveted type disk spring
US10527179B2 (en) * 2017-11-21 2020-01-07 Dramm Corporation of Manitowoc Ball valve with improved assembly configuration
JP6472924B1 (en) * 2018-10-17 2019-02-20 東フロコーポレーション株式会社 Ball valve
TWI680916B (en) * 2018-12-21 2020-01-01 沃拓創意股份有限公司 Portable bubble water bottle and air valve structure thereof
EP3680523B1 (en) * 2019-01-14 2024-06-26 Illinois Tool Works Inc. Valve
CN111720591B (en) * 2019-03-18 2024-06-28 罗伯特·博世有限公司 Distribution valve and refrigeration system
CN110131446B (en) * 2019-05-21 2020-12-15 浙江云达流体智控股份有限公司 Three-way ball valve
JP7449552B2 (en) * 2019-07-31 2024-03-14 株式会社フジキン ball valve
US20230079603A1 (en) * 2020-02-25 2023-03-16 Kitz Corporation Valve
US11460116B2 (en) * 2020-04-01 2022-10-04 Baker Hughes Oilfield Operations Llc Top entry valve
RU202057U1 (en) * 2020-09-25 2021-01-28 Общество с ограниченной ответственностью "Темпер" BALL VALVE WITH REPAIRABLE NECK
KR102213292B1 (en) * 2020-12-28 2021-02-05 최준영 Ball--- valve
JP2023038775A (en) * 2021-09-07 2023-03-17 株式会社不二工機 Valve device and valve main body part
WO2023108596A1 (en) * 2021-12-17 2023-06-22 Henkel Ag & Co. Kgaa Bonding method and apparatus

Family Cites Families (132)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029438A (en) * 1931-06-01 1936-02-04 Merco Nordstrom Valve Co Plug valve
US2069013A (en) * 1932-03-18 1937-01-26 Merco Nordstrom Valve Co Plug valve
US2177873A (en) * 1933-09-27 1939-10-31 Merco Nordstrom Valve Co Valve
US2045113A (en) * 1933-10-14 1936-06-23 Leo A Ward Plug valve
US2032316A (en) * 1934-04-28 1936-02-25 Walworth Patents Inc Valve
US2114933A (en) * 1936-05-13 1938-04-19 Nielson Martin Plug valve
US2144933A (en) 1938-03-04 1939-01-24 Richter Ben Toy
US2206370A (en) * 1938-08-13 1940-07-02 Merco Nordstrom Valve Co Low temperature alloy and valve or the like
US2289722A (en) * 1941-03-19 1942-07-14 Mueller Co Valve structure
US2885179A (en) * 1956-08-30 1959-05-05 Hartmann Werner Spherical ball valve
GB876610A (en) 1959-02-16 1961-09-06 Varian Associates Coupling assemblies for tubes
US3069909A (en) 1959-05-11 1962-12-25 Gen Electric Temperature reference block
US3066909A (en) * 1959-10-26 1962-12-04 Continental Mfg Company Plug valve
US3108779A (en) * 1959-11-12 1963-10-29 Acf Ind Inc Valve having a valve seat of very thin material
FR1273252A (en) * 1959-11-12 1961-10-06 Ball valve
US3038489A (en) * 1960-04-06 1962-06-12 Cameron Iron Works Inc Valves
GB867610A (en) * 1961-03-02 1961-05-10 Crane Packing Ltd Improvements relating to fluid valves of plug cock type
US3168900A (en) * 1962-03-23 1965-02-09 Crane Co Ball valve with flexible bonnet
US3192943A (en) * 1962-06-27 1965-07-06 Alfred M Moen Cartridge ball valve
DE1202596B (en) * 1963-03-25 1965-10-07 Whitey Research Tool Co Cock with ball valve
US3236495A (en) * 1963-03-25 1966-02-22 Whitey Research Tool Co Ball valve
US3223111A (en) * 1963-09-27 1965-12-14 Acf Ind Inc Integral valve and seat unit
US3276740A (en) * 1963-10-04 1966-10-04 Keystone Valve Corp Valve
US3314135A (en) 1964-07-30 1967-04-18 Vaco Products Co Crimping tools and dies
US3369791A (en) * 1965-03-18 1968-02-20 Lee P. Snodgrass Disc type flow control valve
NL6706387A (en) * 1967-05-06 1968-11-07
US3584641A (en) * 1968-01-03 1971-06-15 Rockwell Mfg Co Lubricated valve assembly
US3552717A (en) * 1968-12-04 1971-01-05 Acf Ind Inc Ball valve having trunnion stop
US3685793A (en) * 1969-01-24 1972-08-22 Uzina Mechanica De Gas Metan M Plug-type valve with lost-motion actuator
US3576309A (en) * 1969-02-19 1971-04-27 Fmc Corp Top entry ball valve
US3599932A (en) * 1969-04-18 1971-08-17 Domer Scaramucci Between flange journaled ball valve assembly
US3575379A (en) * 1969-08-01 1971-04-20 Walworth Co Encapsulated plug valve
US3601363A (en) * 1969-08-05 1971-08-24 Mueller Co Ball valves
US3647179A (en) * 1969-10-06 1972-03-07 Balon Corp Split body valve assembly
US3589675A (en) * 1969-11-10 1971-06-29 Domer Scaramucci Rotary valve assembly with insertable valve unit
US3648723A (en) 1969-12-22 1972-03-14 Goddard Ind Inc Valve
US3684793A (en) * 1970-04-10 1972-08-15 Stauffer Wacker Silicone Corp Room temperature curing organopolysiloxanes
US3647178A (en) * 1970-09-24 1972-03-07 Balon Corp High-pressure low-torque valve assembly
GB1393530A (en) * 1971-06-18 1975-05-07 Cowie Scient Ltd Taps
US3705707A (en) 1971-07-13 1972-12-12 Domer Scaramucci Self-aligning trunnion ball valve
US3735957A (en) * 1971-10-14 1973-05-29 A Duggar Valve
US3760836A (en) * 1972-02-24 1973-09-25 T Albanese Under-fixture valve
US3974869A (en) * 1972-04-13 1976-08-17 Michio Abe Fluid flow control valve
US3780985A (en) * 1972-04-24 1973-12-25 D Perry Valve with elliptical sealing
US3779513A (en) 1972-05-18 1973-12-18 American Cystoscope Makers Inc Valve
US3815870A (en) * 1972-05-26 1974-06-11 Rockwell Mfg Co Plug valve assemblies
US3792835A (en) * 1972-06-08 1974-02-19 H Shafer Trunnion type rotary valve of welded tube and plate construction
US3795385A (en) * 1972-11-10 1974-03-05 Union Tank Car Co Ball valve
US3883112A (en) * 1973-02-02 1975-05-13 Rockwell International Corp Plug valve having composite seat element
US3916943A (en) 1973-08-27 1975-11-04 John L Dore & 0 Co Plastic lined plug valve
US3869108A (en) * 1974-01-07 1975-03-04 Valve Syst Int Inc Welded valve body construction
US3934606A (en) * 1974-06-20 1976-01-27 Grove Valve And Regulator Company Cam locked ball valve
US3931954A (en) * 1974-09-03 1976-01-13 Guzzetta Matthew P Petcock
DE2627955A1 (en) * 1975-07-03 1977-01-27 Itt Ind Gmbh Deutsche NON-PHYSICAL BALL VALVE
CA1041981A (en) * 1975-12-05 1978-11-07 Ron Woronowicz Valve
US4126295A (en) 1976-09-22 1978-11-21 International Telephone And Telegraph Corporation Ball valve having metal seat rings
GB1525193A (en) * 1976-11-13 1978-09-20 Tk Valve Ltd Ball valves
US4099543A (en) * 1977-05-31 1978-07-11 Westinghouse Air Brake Company Vented ball type angle cock
US4192483A (en) * 1978-12-20 1980-03-11 Grove Valve And Regulator Company One piece seat ring with O-ring seal
US4254793A (en) * 1979-01-15 1981-03-10 Domer Scaramucci Ball valve having valve chamber venting seal assemblies
US4293038A (en) * 1979-05-24 1981-10-06 Baker International Corporation Ball valve assembly
US4262688A (en) * 1979-05-25 1981-04-21 Acf Industries, Incorporated Metal seat assemblies for valves
US4286614A (en) * 1979-09-19 1981-09-01 Acf Industries, Incorporated High temperature ball valve
CA1135677A (en) * 1979-10-04 1982-11-16 Michael A. Calvert Ball valves
IN155180B (en) * 1980-01-08 1985-01-12 Xomox Corp
US4319664A (en) * 1980-03-03 1982-03-16 Price Ralph J Remotely controlled oil drain valve
US4339112A (en) * 1980-05-05 1982-07-13 Grove Valve And Regulator Company Integral end closure and hub for valve body and method of forming same
JPS5765463A (en) * 1980-10-02 1982-04-21 Fuji Kinzoku Kosaku Kk Ball valve
US4479513A (en) * 1981-08-28 1984-10-30 Whitey Co. High pressure ball valve
US4572239A (en) * 1981-08-28 1986-02-25 Whitey Co. High pressure ball valve
US4388945A (en) * 1982-01-04 1983-06-21 Jamesbury Corporation Valve assembly and disassembly device
US4390039A (en) * 1982-01-04 1983-06-28 Jamesbury Corporation Valve assembly and disassembly device
US4475713A (en) * 1982-03-19 1984-10-09 Xomox Corporation One piece top seal for a valve
US4505294A (en) * 1982-05-12 1985-03-19 Crosby Valve & Gage Company Slurry valve
US4576234A (en) * 1982-09-17 1986-03-18 Schlumberger Technology Corporation Full bore sampler valve
US4423749A (en) * 1982-12-08 1984-01-03 Sloan Valve Company Angle cock improvements
US4519414A (en) * 1983-01-18 1985-05-28 Industrial De Valvulas, S.A. De C.V. Mechanically balanced tapered plug valve
US4538790A (en) * 1983-03-24 1985-09-03 Whitey Co. Valve stem packing assembly
JPS59212575A (en) 1983-05-18 1984-12-01 Kitamura Valve Seizo Kk Seal structure in trunnion type valve
US4506696A (en) * 1983-06-20 1985-03-26 Von Pechmann Heinz A Gas tight plug valve
GB8319853D0 (en) * 1983-07-22 1983-08-24 Forsac Valves Ball valve for pipeline
US4617957A (en) 1983-07-25 1986-10-21 Xomox Corporation Rotary plug valve
JPS6037467A (en) * 1983-08-08 1985-02-26 Hitachi Metals Ltd Cock
US4548384A (en) 1983-12-15 1985-10-22 Smith Valve Corporation Top entry metal-seated ball valve
US4632140A (en) 1983-12-15 1986-12-30 Smith Valve Corporation Top entry ball valve
US4535970A (en) * 1983-12-27 1985-08-20 Quamco, Inc. Top entry ball valve
US4573498A (en) * 1984-03-29 1986-03-04 General Signal Corporation Ball valve
JPH0141574Y2 (en) * 1985-05-16 1989-12-07
DK158016C (en) * 1984-07-11 1990-08-13 Broen Armatur As PROCEDURE FOR INSTALLING A BALL VALVE
US4759530A (en) * 1984-11-14 1988-07-26 Neotecha Ag Stem and disc seal construction for butterfly valves
US4579316A (en) * 1984-11-26 1986-04-01 Velan Inc. Metal seated ball valves
US4658978A (en) * 1985-06-24 1987-04-21 Nippon Ball Valve Co., Ltd. Top entry ball valve and a clamp therefor
US4566482A (en) * 1985-06-27 1986-01-28 Stunkard Gerald A Top entry trunnion ball valve
US4696323A (en) * 1985-08-30 1987-09-29 Neotecha Ag Plastic lined rotatable valve
US4662394A (en) * 1985-10-25 1987-05-05 Johnston Pump/General Valve, Inc. Tight shut-off valve with flow control element
US4657222A (en) * 1985-11-27 1987-04-14 South Shore Manufacturing, Inc. Valve
US4683906A (en) * 1985-11-29 1987-08-04 Itt Corporation Trunnion type ball valve
US4601308A (en) * 1985-12-30 1986-07-22 Joy Manufacturing Company Ball valve with seat loading mechanism
US4685488A (en) * 1986-02-07 1987-08-11 Whitey Co. Ball valve
US4637421A (en) * 1986-05-15 1987-01-20 Stunkard Gerald A In-line repairable top entry ball valve
JPS63174674A (en) * 1987-01-14 1988-07-19 株式会社 タバタ Diving fin
US5181691A (en) * 1988-03-09 1993-01-26 Ngk Spark Plug Co., Ltd. Mechanical part made of ceramics
US4815701A (en) * 1988-04-29 1989-03-28 Cooper Industries, Inc. Spring and seat assembly for ball valves
NO166420C (en) * 1988-10-14 1991-07-31 Norske Stats Oljeselskap VALVE.
US4911408A (en) * 1989-01-03 1990-03-27 Kemp Development Corporation Seat assembly for ball valves
US4917354A (en) * 1989-01-10 1990-04-17 Chambers James F Dual action ball valve
NO170239C (en) * 1990-03-19 1992-09-23 Ingolf Klyde BALL VALVE
US5056758A (en) 1990-05-11 1991-10-15 Bramblet John W Valve stem packing structure
US5117858A (en) * 1991-09-30 1992-06-02 Worcester Controls Corporation Top entry ball valves with cam adjustable seats
US5215286A (en) * 1992-05-26 1993-06-01 Nupro Company High pressure diaphragm valve
US5193573A (en) * 1992-06-15 1993-03-16 Chronister Clyde H Ball valve having replaceable seals under full service pressure
US5205536A (en) * 1992-09-24 1993-04-27 Newport News Shipbuilding And Dry Dock Company Top entry, trunnion-type ball valve
JPH06123338A (en) 1992-10-12 1994-05-06 Tochigi Fuji Ind Co Ltd Differential device
US5326074A (en) * 1992-11-06 1994-07-05 Xomox Corporation Enhanced sealing arrangement for a rotary valve shaft
US5419532A (en) * 1993-07-19 1995-05-30 Pbv-Usa, Inc. Valve seal
US5313976A (en) * 1993-07-26 1994-05-24 Keystone International Holdings, Corp. Top entry ball valve and method of assembly
DE4415284A1 (en) 1994-04-30 1995-11-02 Pfannenschmidt Erhard Ball=cock with seal between cock plug and housing
GB2292440B (en) * 1994-08-12 1996-12-18 Btr Plc Tapered plug valve
US5551479A (en) * 1994-10-05 1996-09-03 Graves; John G. Combination ball and check valve
US5562116A (en) 1995-02-06 1996-10-08 Henwood; Gerard S. Angle entry rotary valve
DK172137B1 (en) 1995-04-27 1997-11-24 Christensens Haner A S Brdr The shut-off device
US5595206A (en) * 1995-05-23 1997-01-21 Greene, Tweed Of Delaware, Inc. Ball valve having one-piece machined seat member
IT1277580B1 (en) * 1995-09-14 1997-11-11 Nuovo Pignone Spa PERFECTED DEVICE FOR HANDLING THE SEATS OF A BALL VALVE
US5730420A (en) * 1995-09-15 1998-03-24 Parker-Hannifin Corporation Ball valve having one-piece packing
JPH09178004A (en) 1995-12-25 1997-07-11 Nippon Boorubarubu Kk Top entry type ball valve
DE19639282C2 (en) * 1996-09-25 2001-08-16 Ralf Krause Ball valve
US5868378A (en) * 1997-01-28 1999-02-09 Fisher Controls International, Inc. Throttling control in a fluid control valve
CN2307962Y (en) * 1997-07-23 1999-02-17 张家港市石化仪表厂 Ball valve
DE29806226U1 (en) * 1998-04-04 1998-06-18 Xomox International GmbH & Co, 88131 Lindau Fitting
US5954088A (en) * 1998-07-17 1999-09-21 Transworld Steel Enterprise Corp. Ball valve adapted to couple with an output drive shaft of a valve control device
US6511004B2 (en) * 2000-01-19 2003-01-28 Delphi Technologies, Inc. Fuel injector cover
BR0306990A (en) 2002-01-18 2004-12-14 Swagelok Co One Piece Gasket Ball Valve

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