Seat insert for cryogenic ball valve

Abstract

To provide a valve suitable for maintaining a seal and preventing fluid flow through a valve at cryogenic temperatures.SOLUTION: A valve (100) includes: a valve body having a longitudinal axis along a flow path through the valve; a ball (108) selectively rotatable within the valve body to selectively allow fluid flow through the valve; a seat insert cavity (110) formed within the valve body; and a seat insert assembly (150) at least partially disposed within the seat insert cavity. The seat insert assembly includes: a seat insert (200) comprising at least one sealing lip; and a support ring engaged with the at least one sealing lip and configured to bias the at least one sealing lip against a portion of the seat insert cavity to prevent leakage through a second leakage path when the ball valve is selectively rotated to prevent fluid flow through the valve.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Valves are used to control the flow of fluids in a wide range of applications. Ball valves are typically used in applications where it is necessary to shut off the flow of fluid through the ball valve. The shut-off and establishment of fluid flow through the ball valve are achieved by the selective actuation of the ball within the ball valve. Generally, the seat insert within the ball valve provides a seal against the ball and a portion of the ball valve body. However, when the ball valve is exposed to extreme environmental conditions such as cryogenic temperatures, the seat insert and / or other parts of the ball valve may shrink, deform, or otherwise change, thereby allowing fluid leakage through the ball valve. Therefore, the industry continues to demand improvements in ball valve technology for such applications.

Brief Description of the Drawings

[0002] To achieve and more fully understand the features and advantages of the embodiments, a more specific description can be made by referring to the embodiments illustrated in the accompanying drawings. However, the drawings illustrate only some embodiments and should not be considered as limiting the scope since other equally valid embodiments may exist.

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DETAILED DESCRIPTION OF THE INVENTION

[0003] FIG. 1 illustrates a seat having an annular seat insert assembly 150 according to one embodiment of the present disclosure. 1 is a partial cross-sectional view of a valve 100. Valve 100 may generally comprise a ball valve, and The valve body 102 has a longitudinal axis 104 along a flow path 106 through the valve 100, and the flow path 106 extends in a direction perpendicular to the longitudinal axis 104. 6 along the valve body 102 to selectively allow fluid flow through the valve 100 and a ball 108 that is rotatable relative to the valve body 102. The valve 100 also includes a valve body 102 formed therein. The seat insert cavity 110 may be formed in the seat. The body 110 generally includes a first inner surface 112 and a second inner surface 113 opposite the first inner surface 112. 4 and a rear surface or wall 116 disposed between the first inner surface 112 and the second inner surface 114. In some embodiments, the first inner surface 112 and / or the second inner surface 114 may be In addition, in some embodiments, the first inner The surface 112 and the second inner surface 114 may be substantially parallel. Alternatively, the rear surface or wall 116 may be substantially radially planar. In this embodiment, the rear surface or wall 116 is connected to the first inner surface 112 and / or the second inner surface 114. It may be substantially perpendicular to the

[0004] The annular seat insert assembly 150 generally comprises a seat insert cavity 1 10. The seat insert assembly 150 may be at least partially disposed within the seat insert assembly 150. Generally, the seat insert 200, 300, 40 includes at least one sealing lip. 0,500 and at least one seal lip engaged, at least one seal lip Support rings 600, 700, 800, 900 configured to bias P against a portion of the sheet insert cavity 110 may be provided. In the illustrated embodiment, at least one seal lip of the sheet inserts 200, 300, 400, 500 may comprise a single seal lip. In some embodiments, the sheet insert assembly 1 50 is designed to prevent leakage of fluid through the first leakage path (between the ball 108 and the sheet insert assembly 150) and the second leakage path (between the sheet insert cavity 110 and the sheet insert assembly 150) when the ball 108 is selectively rotated to prevent the flow of fluid through the valve 100 along the flow path 106. It may also be designed to prevent leakage of fluid through each of the first leakage path (between the ball 108 and the sheet insert assembly 150) and the second leakage path (between the sheet insert cavity 110 and the sheet insert

[0005] Figures 2-5 are partial cross-sectional views of various embodiments of the annular sheet inserts 200, 300, 40 0, 500 according to embodiments of the present disclosure. As shown in Figure 2, the sheet insert 200 may generally comprise a first seal surface 202 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through the first leakage path. In some embodiments, the first seal surface 202 may be curved, curvilinear, planar, or a combination thereof. The sheet insert 200 may also comprise at least one seal lip 204. The seal lip 204 may form a second seal interface with a portion of the sheet insert cavity 110 to prevent leakage through the second leakage path. In some embodiments, the seal lip 204 forms a second seal interface with the first inner surface 112 of the sheet insert cavity 110 and is an outer seal lip. To prevent leakage through the second leakage path, it may form a second seal interface with a portion of the sheet insert cavity 110. In some embodiments, the seal lip 204 forms a second seal interface with the first inner surface 112 of the sheet insert cavity 110. The outer seal lip forms a second seal interface with the first inner surface 112 of the sheet insert cavity 110. It may also be upward. Further, in some embodiments, the seal lip 204 may include a seal bump, tooth, or undulation 206 that contacts the seat insert cavity 110. In some embodiments, the seal bump, tooth, or undulation 206 may be disposed on the outer surface 208 of the seal leg 204. The seal lip 204 may include an inner surface 210 and an inner end 214 that form a cavity 212 within the seat insert 200. In some embodiments, the inner surface 210 of the seal lip 204 may be flat. In some embodiments, the flat inner surface 210 may be substantially axially planar. As shown in FIG. 3, the seat insert 300 may generally include a first seal surface 302 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through the first leakage path. In some embodiments, the first seal surface 302 may be curved, curvilinear, planar, or a combination thereof. The seat insert 300 may also include at least one seal lip 304. The seal lip 304 may form a second seal interface with a portion of the seat insert cavity 110 to prevent leakage through the second leakage path. In some embodiments, the seal lip 304 may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments,

[0006] the seal lip 304 may include a seal bump, tooth, or undulation 306 that contacts the seat insert cavity 110. In some embodiments, the seal bump, tooth, or undulation 306 may be disposed on the outer surface 308 of the seal leg 304. The seal lip 304 may include an inner surface 310 and an inner end 314 that form a cavity 312 within the seat insert 300. In some embodiments, the inner surface 310 of the seal lip 304 may be flat. In some embodiments, the flat inner surface 310 may be substantially axially planar. In some embodiments, the seat insert 300 may generally include a first seal surface 302 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through the first leakage path. In some embodiments, the first seal surface 302 may be curved, curvilinear, planar, or a combination thereof. The seat insert 300 may also include at least one seal lip 304. The seal lip 304 may form a second seal interface with a portion of the seat insert cavity 110 to prevent leakage through the second leakage path. In some embodiments, the seal lip 304 may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments, the seal lip 304 may include a seal bump, tooth, or undulation 306 that contacts the seat insert cavity 110. In some embodiments, the seal bump, tooth, or undulation 306 may be disposed on the outer surface 308 of the seal leg 304. The seal lip 304 may include an inner surface 310 and an inner end 314 that form a cavity 312 within the seat insert 300. In some embodiments, the inner surface 310 of the seal lip 304 may be flat. In some embodiments, the flat inner surface 310 may be substantially axially planar. In some embodiments, the seat insert 300 may generally include a first seal surface 302 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through the first leakage path. , or the undulation 306 may be disposed on the outer surface 308 of the seal lip 304. The seal lip 304 may include an inner surface 310 that forms a cavity 312 within the seat insert 300 and an inner end 314.

[0007] In some embodiments, the inner surface 310 of the seal lip 304 may be angled. In some embodiments, the inner surface 310 of the seal lip 304 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the inner surface 310 of the seal lip 304 may have an angle (α) of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees. In some embodiments, the inner surface 310 of the seal lip 304 may have an angle (α) of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less. Further, it will be understood that the inner surface 310 of the seal lip 304 may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less.

[0008] As shown in FIG. 4, the seat insert 400 generally includes a first seal surface 402 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through a first leakage path. In some embodiments, the first seal surface 402 may be curved, curvilinear, planar, or a combination thereof. The seat insert 400 may also include at least one seal lip 404. 。The seal lip 404 may form a second seal interface with a portion of the cavity 110 of the seat insert to prevent leakage through the second leakage path. In some embodiments it may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments the seal lip 404 may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments the seal lip 404 may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments the seal lip 404 may include a seal bump, tooth, or undulation 406 that contacts the seat insert cavity 110. In some embodiments, the seal bump, tooth , or undulation 406 may be disposed on the outer surface 408 of the seal lip 404. The seal lip 404 may include an inner surface 410 that forms a cavity 412 within the seat insert 400 and an inner end 414. In some embodiments, the inner surface 4 10 of the seal lip 404 may be curved.

[0009] As shown in FIG. 5, the seat insert 500 may generally include a first seal surface 502 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through the first leakage path. In some embodiments the first seal surface 502 may be curved, curvilinear, planar, or a combination thereof . The seat insert 500 may also include at least one seal lip 504 . The seal lip 504 may form a second seal interface with a portion of the cavity 110 of the seat insert to prevent leakage through the second leakage path. In some embodiments it may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments it may be an outer seal lip that forms a second seal interface with a portion of the cavity 110 of the seat insert to prevent leakage through the second leakage path. In some embodiments the seal lip 504 may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments the seal lip 504 may be an outer seal lip that forms a second seal interface with the first inner surface 112 of the seat insert cavity 110. Further, in some embodiments In this state, the seal lip 504 may include a seal bump, tooth, or undulation 506 that contacts the seat insert cavity 110. In some embodiments, the seal bump, tooth, or undulation 506 may be disposed on the outer surface 508 of the seal lip 504. The seal lip 504 may include an inner surface 510 that forms a cavity 512 within the seat insert 500 and an inner end 514. In some embodiments, the inner surface 510 of the seal lip 504 may include a seal bump, tooth, or undulation 516. Further, in some embodiments, any of the seat inserts 200, 300, 400 may include a seal bump, tooth, or undulation 516 on one or more of their respective inner surfaces 210, 310, 410.

[0010] In some embodiments, the seat inserts 200, 300, 400, 500 may be formed from PTFE, fluoropolymer, perfluoropolymer, PTFE, PVF, PVDF, PCTFE, PFA, FEP, ETFE, ECTFE, PCTFE, PEEK, PEK, or polyarylene ketone such as PEKK, PPS, PPSU, PSU, PPE, or polysulfone such as PPO, aromatic polyamide such as PPA, thermoplastic polyimide such as PEI or TPI, or any combination thereof. In some embodiments, the seat inserts 200, 300, 400, 500 may be formed from a material modified with at least one filler.

[0011] Figures 6-9 are annular support rings 600, 700, 800, 900 according to embodiments of the present disclosure. Partial cross-sectional views of various embodiments of 00. As shown in FIG. 6, the support ring 600 generally includes an outer surface 602, an inner surface 604 opposite the outer surface 602, a first end 606, and a second end 608 opposite the first end 606. The outer surface 602 of the support ring 600 may be configured to engage the inner surfaces 210, 310, 410, 510 of the seal lips 204, 304, 404, 504 of the sheet inserts 200, 300, 400, 500. In some embodiments, the outer surface 602 of the support ring 600 may be flat. In some embodiments, the flat outer surface 602 may be substantially axially planar. Additionally, in some embodiments, the inner surface 604 may be configured to contact the second inner surface 114 of the seat insert cavity 110 of the valve 100. Generally, it may include an outer surface 602, an inner surface 604 on the side opposite the outer surface 602, a first end 606, and a second end 608 opposite the first end 606. The outer surface 602 of the support ring 600 may be configured to engage the inner surfaces 210, 310, 410, 510 of the seal lips 204, 304, 404, 504 of the sheet inserts 200, 300, 400, 500. In some embodiments, the outer surface 602 of the support ring 600 may be flat. In some embodiments, the flat outer surface 602 may be substantially axially planar. In addition, in some embodiments, the inner surface 604 may be configured to contact the second inner surface 114 of the seat insert cavity 110 of the valve 100. As shown in FIG. 7, the support ring 700 generally includes an outer surface 702, an inner surface 704 on the side opposite the outer surface 702, a first end 706, and a second end 708 opposite the first end 706. The outer surface 702 of the support ring 700 may be configured to engage the inner surfaces 210, 310, 410, 510 of the seal lips 204, 304, 404, 504 of the sheet inserts 200, 300, 400, 500. In some embodiments, the outer surface 702 of the support ring 700 may be angled.

[0012] In some embodiments, the outer surface 702 of the support ring 700 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the outer surface 702 of the support ring 700 may be at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, The outer surface 702 of the support ring 700 may be configured to engage the inner surfaces 210, 310, 410, 510 of the seal lips 204, 304, 404, 504 of the sheet inserts 200, 300, 400, 500. In some embodiments, the outer surface 702 of the support ring 700 may be angled. In some embodiments, the outer surface 702 of the support ring 700 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the outer surface 702 of the support ring 700 may be at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, In some embodiments, the outer surface 702 of the support ring 700 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the outer surface 702 of the support ring 700 may be at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, In some embodiments, the outer surface 702 of the support ring 700 may be at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, An angle of at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees (α) may be included. In some embodiments, the outer surface 702 of the support ring 700 is 4 5 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less for the angle (α). Further, the outer surface 702 of the support ring 700 is at least It will be understood that it may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less. In addition, in some embodiments, the inner surface 704 may be configured to contact the second inner surface 114 of the seat insert cavity 110 of the valve 100 as well.

[0013] As shown in FIG. 8, the support ring 800 generally includes an outer surface 802, an inner surface 804 on the opposite side of the outer surface 802, a first end 806, and a second end 808 on the opposite side of the first end 806 and may be provided. The outer surface 802 of the support ring 800 may be configured to engage the inner surfaces 210, 310 of the seal lips 204, 304, 404, 504 of the seat inserts 200, 300 , 400, 500. In some embodiments, the outer surface 802 of the support ring 800 may be arcuate or curved. In addition, in some embodiments, the inner surface 804 may be configured to contact the second inner surface 114 of the seat insert cavity 110 of the valve 100 as well.

[0014] As shown in FIG. 9, the support ring 900 generally includes an outer surface 902, an inner surface 904 on the opposite side of the outer surface 902, a first end 906, and a second end 908 on the opposite side of the first end 906 and may be provided. The outer surface 902 of the support ring 900 may be configured to engage the inner surfaces of the seal lips of the seat inserts 200, 300 , may be configured to engage the inner surfaces 210, 310 of the seal lips 204, 304, 404, 504 of 400 and 500. In some embodiments, , the outer surface 902 of the support ring 900 may be doubly angled. In some embodiments, the first angled portion 902a and the second angled portion 9 02b of the outer surface 902 of the support ring 900 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the first angled portion 902a of the outer surface 902 of the support ring 900 may have an angle (α) of 0 to 4 5 degrees. In some embodiments, the second angled portion 902b of the outer surface 9 02 of the support ring 900 may have an angle (α) of 0 to 45 degrees. Further, it will be understood that the first angled portion 902a of the outer surface 902 of the support ring 900 and the outer surface of the support ring 900 the second angled portion 902b of 902 may have different angles. In addition, in some embodiments, the inner surface 904 may be configured to contact the second inner surface 114 of the seat insert cavity 110 of the valve 100.

[0015] In some embodiments, the support rings 600, 700, 800, 900 may be formed from a metallic material . In some embodiments, the metallic material may be a nickel-chromium-based alloy such as Inconel (registered trademark), a nickel-based alloy, a cobalt-chromium-nickel-mo lybdenum alloy, a cobalt-chromium-nickel alloy such as Elgiloy (registered trademark), ni ckel, titanium, tungsten, stainless steel, spring steel, steel, aluminum, zinc, copper, magnesium, tin, platinum, lead, iron, or bronze. In some embodiments . , the support rings 600, 700, 800, 900 are formed of a metal material having a coating disposed thereon. In some embodiments, the coating or plating may be gold-plated. Plating, silver plating, nickel plating, aluminum chromium nitride (AlCrN) plating, nitride Titanium aluminum (TiAlN) plating, any other wear-resistant metal plating, or their Additionally, in some embodiments, the support ring 60 0, 700, 800, 900 may comprise split rings or split bands.

[0016] When assembled, the seat insert assembly 150 is the seat insert of the valve 100. The support rings 600, 700 may be at least partially disposed within the port cavity 110. , 800, 900 are connected to the seat of the valve 100. The support ring 60 may be in contact with the rear surface 116 of the insert cavity 110. The second ends 608, 708, 808, 908 of the casings 600, 700, 800, 900 are connected to the support rings 608, 708, 808, 908. The second ends 608, 708, 808, 908 of the guides 600, 700, 800, 900 and the seals The inner ends 214, 314, 414, 51 of the inserts 200, 300, 400, 500 4, so that there is a gap or void between the seat inserts 200, 300, 400, 500 may not be in contact with the inner ends 214, 314, 414, 514. In this embodiment, the second ends 608, 70 of the support rings 600, 700, 800, 900 8, 808, 908 may be flat. In some embodiments, the support ring 600 The second ends 608, 708, 808, 908 of the stator cores 700, 800, 900 are curved. It may be curved or rounded.

[0017] Support rings 600, 700, 800, 900 engage with seal lips 204, 304, 40 4, 504 and may be configured to bias seal lips 204, 304, 404, 504 against a portion of seat insert cavity 110. More specifically, the outer surfaces 602, 702, 802, 902 of support rings 600, 700, 800, 900 engage with the inner surfaces 210, 310, 410, 510 of seal lips 204, 304, 404, 504 such that the outer surfaces 208, 308, 408, 508 of seal lips 204, 304, 404, 504 contact a first inner surface 112 of seat insert cavity 110 of valve 100 and are configured to bias seal lips 204, 304, 404, 504 against the first inner surface 112 of seat insert cavity 110. Additionally, the inner surfaces 604, 704, 804, 904 of support rings 600, 700, 800, 900 may contact a second inner surface 114 of seat insert cavity 110 of valve 100. In this configuration, the pressure from the contact between seat inserts 200, 300, 400, 500 and the body 108 of valve 100 axially biases or presses support rings 600, 700, 800, 900 towards seat inserts 200, 300, 400, 500 to bias seal lips 204, 304, 404, 504 against the first inner surface 112 of seat insert cavity 110, increase the contact pressure against the first inner surface 112 of seat insert cavity 110, or a combination thereof to prevent leakage through a second leakage path. Further, embodiments of seat insert assembly 150 may include seat inserts

[0018] ​​​​​​​​​​​​​​ Any combination of the pistons 200, 300, 400, 500 and the support rings 600, 700, 800, 900 may be provided. It will be appreciated that

[0019] FIG. 10 is a partial cross-sectional view of a valve 100 having an annular sheet insert assembly 1050 according to an embodiment of the present disclosure. The annular sheet insert assembly 1050 may generally be at least partially disposed within a sheet insert cavity 110 of the valve 100. The sheet insert assembly 1050 generally includes sheet inserts 1100, 1200, 1300, 1400 having at least one seal lip, and support rings 1500, 1600, 1700, 1800 configured to engage at least one seal lip and bias at least one seal lip against a portion of the sheet insert cavity 110. In the illustrated embodiment, at least one seal lip of the sheet inserts 1100, 1200, 1300, 1400 may include a plurality of seal lips. More specifically, in the illustrated embodiment, at least one seal lip of the sheet inserts 1100, 1200, 1300, 1400 may include a double seal lip. In some embodiments, the sheet insert assembly 1050 may be designed to prevent leakage of fluid through each of a first leakage path (between the ball 108 and the sheet insert assembly 1050) and a second leakage path (between the sheet insert cavity 110 and the sheet insert assembly 1050) when the ball 108 is selectively rotated to prevent fluid flow through the valve 100 along the flow path 106. It will be appreciated that It may be at least partially disposed within the sheet insert cavity 110 of the valve 100. The sheet insert assembly 1050 generally includes sheet inserts 1100, 1200, 1300, 1400 having at least one seal lip, and support rings 1500, 1600, 1700, 1800 configured to engage at least one seal lip and bias at least one seal lip against a portion of the sheet insert cavity 110. In the illustrated embodiment, at least one seal lip of the sheet inserts 1100, 1200, 1300, 1400 may include a plurality of seal lips. More specifically, in the illustrated embodiment, at least one seal lip of the sheet inserts 1100, 1200, 1300, 1400 may include a double seal lip. In some embodiments, the sheet insert assembly 1050 may be designed to prevent leakage of fluid through each of a first leakage path (between the ball 108 and the sheet insert assembly 1050) and a second leakage path (between the sheet insert cavity 110 and the sheet insert assembly 1050) when the ball 108 is selectively rotated to prevent fluid flow through the valve 100 along the flow path 106. It will be appreciated that In the illustrated embodiment, at least one seal lip of the sheet inserts 1100, 1200, 1300, 1400 may include a double seal lip. In some embodiments, the sheet insert assembly 1050 may be designed to prevent leakage of fluid through each of a first leakage path (between the ball 108 and the sheet insert assembly 1050) and a second leakage path (between the sheet insert cavity 110 and the sheet insert assembly 1050) when the ball 108 is selectively rotated to prevent fluid flow through the valve 100 along the flow path 106. when the ball 108 is selectively rotated to prevent fluid flow through the valve 100 along the flow path 106, each of a first leakage path (between the ball 108 and the sheet insert assembly 1050) and a second leakage path (between the sheet insert cavity 110 and the sheet insert assembly 1050) It may be designed to prevent leakage of fluid through each of the first leakage path (between the ball 108 and the sheet insert assembly 1050) and the second leakage path (between the sheet insert cavity 110 and the sheet insert assembly 1050). when the ball 108 is selectively rotated to prevent fluid flow through the valve 100 along the flow path 106.

[0020] Figures 11 to 14 are partial cross-sectional views of various embodiments of the annular sheet inserts 1100, 120 0, 1300, 1400. As shown in Figure 11, the sheet insert 1100 generally includes a first sealing surface 1102 that forms a first sealing interface with the ball 108 of the valve 10 0 to prevent leakage through the first leakage path. In some embodiments, the first sealing surface 1102 may be curved, curvilinear , planar, or a combination thereof. The sheet insert 1100 may also include at least one sealing lip. In some embodiments , the sheet insert 1100 may include a plurality of sealing lips 1104, 1106. In some embodiments , the plurality of sealing lips 1104, 1106 may include an outer sealing lip 1104 and an inner sealing lip 1106. The outer sealing lip 1104 and the inner sealing lip 1106 each form a second sealing interface with the first inner surface 112 and the second inner surface 114 of the sheet insert cavity 110 to prevent leakage through the second leakage path . Further, in some embodiments, one or more of the sealing lips 1104, 1106 may include a sealing bump, tooth, or undulation 1108 that contacts the sheet insert cavity 110 . In some embodiments, the sealing bump, tooth, or undulation 1108 may be disposed on the outer surfaces 1110, 1112 of one or more of the sealing lips 1104 , 1106. The outer sealing lip 1104 may include an inner surface 1114. The inner sealing lip 1106 may also include an inner surface 1116. The inner surface 1114 of the outer sealing lip 1104, the inner sealing lip 1106's inner surface 1116 . In some embodiments, the inner surface 1114 of the outer sealing lip 1104, the inner surface 1116 of the inner sealing lip 1106 . In some embodiments, one or more of the sealing lips 1104, 1106 may include a sealing bump, tooth, or undulation 1108 that contacts the sheet insert cavity 110 . In some embodiments, the sealing bump, tooth, or undulation 1108 may be disposed on the outer surfaces 1110, 1112 of one or more of the sealing lips 1104 , 1106. The outer sealing lip 1104 may include an inner surface 1114. The inner sealing lip 1106 may also include an inner surface 1116. The inner surface 1114 of the outer sealing lip 1104, the inner surface 1116 of the inner sealing lip 1106 . The outer sealing lip 1104 may include an inner surface 1114. The inner sealing lip 1106 may also include an inner surface 1116 . The inner surface 1114 of the outer sealing lip 1104, the inner surface 1116 of the inner sealing lip 1106 The inner surface 1116 and the inner end 1118 of the lip 1106 can form a cavity 1120 within the seat insert 1100. In some embodiments, the inner surfaces 1114, 1116 of the seal lips 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. As shown in FIG. 12, the seat insert 1200 may generally include a first seal surface 1202 that forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through a first leakage path. In some embodiments, the first seal surface 1202 can be curved, curvilinear, planar, or a combination thereof. The seat insert 1200 may also include at least one seal lip. In some embodiments, the seat insert 1200 may include a plurality of seal lips 1204, 1206. In some embodiments, the plurality of seal lips 1204, 1206 may include an outer seal lip 1204 and an inner seal lip 1206. The outer seal lip 1204 and the inner seal lip 1206 may each form a second seal interface with the first inner surface 112 of the seat insert cavity 110 and the second inner surface 114 of the seat insert cavity 110 to prevent leakage through a second leakage path. Further, in some embodiments, one or more of the seal lips 1204, 1206 may include seal bumps, teeth, or undulations 1208 that contact the seat insert cavity 110. In some embodiments, the seal bumps, teeth, or undulations 1208 are on the seal lip 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. The inner surfaces 1114, 1116 may be flat and, in some embodiments, may be substantially axially planar.

[0021] As shown in FIG. 12, the seat insert 1200 generally forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through the first leakage path. A first seal surface 1202 may be provided. In some embodiments, the first seal surface 1202 can be curved, curvilinear, planar, or a combination thereof. The seat insert 1200 may also include at least one seal lip. In some embodiments, the seat insert 1200 may include a plurality of seal lips 1204, 1206. In some embodiments, the seat insert 1200 may include a plurality of seal lips 1204, 1206. The seat insert 1200 may also include at least one seal lip. In some embodiments, the seat insert 1200 may include a plurality of seal lips 1204, 1206. In some embodiments, the plurality of seal lips 1204, 1206 may include an outer seal lip 1204 and an inner seal lip 1206. The outer seal lip 1204 and the inner seal lip 1206 may each form a second seal interface with the first inner surface 112 of the seat insert cavity 110 and the second inner surface 114 of the seat insert cavity 110 to prevent leakage through a second leakage path. Further, in some embodiments, one or more of the seal lips 1204, 1206 may include seal bumps, teeth, or undulations 1208 that contact the seat insert cavity 110. In some embodiments, the seal bumps, teeth, or undulations 1208 are on the seal lip 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. In some embodiments, the seat insert 1200 may include a plurality of seal lips 1204, 1206. In some embodiments, the seat insert 1200 may include a plurality of seal lips 1204, 1206. In some embodiments, the plurality of seal lips 1204, 1206 may include an outer seal lip 1204 and an inner seal lip 1206. The outer seal lip 1204 and the inner seal lip 1206 may each form a second seal interface with the first inner surface 112 of the seat insert cavity 110 and the second inner surface 114 of the seat insert cavity 110 to prevent leakage through a second leakage path. The outer seal lip 1204 and the inner seal lip 1206 may each form a second seal interface with the first inner surface 112 of the seat insert cavity 110 and the second inner surface 114 of the seat insert cavity 110 to prevent leakage through a second leakage path. In some embodiments, the outer seal lip 1204 and the inner seal lip 1206 may each form a second seal interface with the first inner surface 112 of the seat insert cavity 110 and the second inner surface 114 of the seat insert cavity 110 to prevent leakage through a second leakage path. Further, in some embodiments, one or more of the seal lips 1204, 1206 may include seal bumps, teeth, or undulations 1208 that contact the seat insert cavity 110. In some embodiments, the seal bumps, teeth, or undulations 1208 are on the seal lip 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. 1104, 1106 may be flat. In some embodiments, the flat inner surfaces 1114, 1116 may be substantially axially planar. It may be disposed on one or more outer surfaces 1210, 1212 of the plugs 1204, 1206. . The outer seal lip 1204 may include an inner surface 1214. The inner seal lip 120 6 may also include an inner surface 1216. The inner surface 1214 of the outer seal lip 1204, the inner surface 1216 of the inner seal lip 1206, and the inner end 1218 may form a cavity 1220 within the sheet insert 1 200.

[0022] In some embodiments, the inner surfaces 1214, 121 6 of the seal lips 1204, 1206 may be angled. In some embodiments, the inner surfaces 1214, 12 16 of the seal lips 1204, 1206 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the inner surfaces 1214 , 1216 of the seal lips 1204, 1206 may have substantially similar angles. In some embodiments, the seal lips 12 04, 1206 may have different angles for the inner surfaces 1214, 1216. In some embodiments, the inner surfaces 1214, 1216 of the seal lips 1204, 1206 may have an angle (α) of at least once, at least twice, at least three times, at least four times, at least five times, at least ten times, at least fifteen times, at least twenty times, at least twenty-five times, or at least thirty times. In some embodiments, the inner surfaces 1214, 1216 of the seal lips 120 4, 1206 may have an angle (α) of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less. Further, the inner surfaces 1214, 1216 of the seal lips 1204, 1206 may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less. It will be understood.

[0023] As shown in FIG. 13, the sheet insert 1300 generally forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through a first leakage path. It may include a first seal surface 1302. In some embodiments, the first seal surface 1302 can be curved, curvilinear, planar, or a combination thereof. The sheet insert 1300 may also include at least one seal lip. In some embodiments, the sheet insert 1300 may include a plurality of seal lips 1304, 1306. In some embodiments, the plurality of seal lips 1304, 1306 may include an outer seal lip 1304 and an inner seal lip 1306. The outer seal lip 1304 and the inner seal lip 1306 may each form a second seal interface with the first inner surface 112 of the sheet insert cavity 110 and the second inner surface 114 of the sheet insert cavity 110 to prevent leakage through a second leakage path. Furthermore, in some embodiments, one or more of the seal lips 1304, 1306 may include seal bumps, teeth, or undulations 1308 that contact the sheet insert cavity 110. In some embodiments, the seal bumps, teeth, or undulations 1308 may be disposed on the outer surfaces 1310, 1312 of one or more of the seal lips 1304, 1306. The outer seal lip 1304 may include an inner surface 1314. The inner seal lip 1306 may also include an inner surface 1316. The inner surface 1314 of the outer seal lip 1304, the inner surface 1316 of the inner seal lip 1306, and the inner end 1318 are of the sheet insert 1 It will be understood. It will be understood. It will be understood. Furthermore, in some embodiments, one or more of the seal lips 1304, 1306 may include seal bumps, teeth, or undulations 1308 that contact the sheet insert cavity 110. In some embodiments, the seal bumps, teeth, or undulations 1308 may be disposed on the outer surfaces 1310, 1312 of one or more of the seal lips 1304, 1306. The outer seal lip 1304 may include an inner surface 1314. The inner seal lip 1306 may also include an inner surface 1316. The inner surface 1314 of the outer seal lip 1304, the inner surface 1316 of the inner seal lip 1306, and the inner end 1318 are of the sheet insert 1 The outer seal lip 1304 may include an inner surface 1314. The inner seal lip 1306 may also include an inner surface 1316. The inner surface 1314 of the outer seal lip 1304, the inner surface 1316 of the inner seal lip 1306, and the inner end 1318 are of the sheet insert 1 The inner surface 1314 of the outer seal lip 1304, the inner surface 1316 of the inner seal lip 1306, and the inner end 1318 are of the sheet insert 1 A cavity 1320 can be formed within 300. In some embodiments, the inner surfaces 1314, 1316 of the seal lips 1 304, 1306 may be curved.

[0024] As shown in FIG. 14, the sheet insert 1400 generally forms a first seal interface with the ball 108 of the valve 100 to prevent leakage through a first leakage path. It may include a first seal surface 1402. In some embodiments, the first seal surface 1402 may be curved, curvilinear, planar, or a combination thereof. The sheet insert 1400 may also include at least one seal lip. In some embodiments, the sheet insert 1400 may include a plurality of seal lips 14 04, 1406. In some embodiments, the plurality of seal lips 1404 , 1406 may include an outer seal lip 1404 and an inner seal lip 1406. The outer seal lip 1404 and the inner seal lip 1406 each form a second seal interface with the first inner surface 112 of the sheet insert cavity 110 and the second inner surface 114 of the sheet insert cavity 110 to prevent leakage through a second leakage path. Further, in some embodiments, one or more of the seal lips 1404, 1406 may include a seal bump, tooth, or undulation 1 408 that contacts the sheet insert cavity 110. In some embodiments, the seal bump, tooth, or undulation 1408 may be disposed on one or more outer surfaces 1410, 1412 of the seal lips 1404, 1406. The outer seal lip 1404 may include an inner surface 1414. The inner seal lip may include an inner surface 1416. One or more of 1404, 1406 may include a seal bump, tooth, or undulation 1408 that contacts the sheet insert cavity 110. In some embodiments, the seal bump, tooth, or undulation 1408 may be disposed on one or more outer surfaces 1410, 1412 of the seal lips 1404, 1406. The outer seal lip 1404 may include an inner surface 1414. The inner seal lip 1406 may include an inner surface 1416. The outer seal lip 1404 may include an inner surface 1414. The inner seal lip 1406 may include an inner surface 1416. The lip 1406 may also include an inner surface 1416. Inside the outer seal lip 1404 surface 1414, the inner surface 1416 of the inner seal lip 1406, and the inner end 1418 may form a cavity 1420 within the seat insert 1400. In some embodiments, the inner surfaces 1414, 1416 of the seal lips 1404, 1406 may include seal bumps, teeth, or undulations 1422. Further, in some embodiments, any one or more of the seat inserts 110 0, 1200, 1300 may include seal bumps, teeth, or undulations 1422 on one or more of their respective inner surfaces 1114, 1116, 12 14, 1216, 1314, 1316.

[0025] Embodiments of the seat inserts 1100, 1200, 1300, 1400 may also have outer seal legs 1104, 1204, 1304, 14 04 with inner surfaces 1114, 1214, 1314, 1414 that are different from the inner surfaces 1116, 121 6, 1316, 1416 of the respective inner seal legs 1106, 1206, 1306, 1406. For example, the inner surfaces 1114, 1214, 1314, 1414 of the outer seal legs 1104, 1204, 1304, 1404, and the inner surfaces 1116 of the inner seal legs 1106, 1206, 1306, 1406 may have any combination of flat surfaces, angled surfaces, curved surfaces, or double-angled surfaces as disclosed herein.

[0026] In some embodiments, the seat inserts 1100, 1200, 1300, 140 0 are made of PTFE, fluoropolymer, perfluoropolymer, PTFE, PVF, PVD F, PCTFE, PFA, FEP, ETFE, ECTFE, PCTFE, PEEK, PE K, or a polyaryl ketone such as PEKK, PPS, PPSU, PSU, PPE, or a polysulfone such as PPO, an aromatic polyamide such as PPA, a thermoplastic polyimide such as PEI or T PI, or may be formed from any combination thereof. In some embodiments, the sheet inserts 1100, 1200, 1300, 1400 may be formed from a material modified with at least one filler.

[0027] Figures 15-18 are partial cross-sectional views of various embodiments of the annular support rings 1500, 1600, 1 700, 1800 according to embodiments of the present disclosure. As shown in Figure 15, the support ring 1500 generally includes an outer surface 1502, an inner surface 1504 opposite the outer surface 1502, a first end 1506, and a second end 1508 opposite the first end 1506. . The outer surface 1502 of the support ring 1500 may be configured to engage the inner surfaces 111 4, 1214, 1314, 1414 of the outer seal lips 1104, 1204, 1304, 1404 of the sheet inserts 1100, 1200, 130 0, 1400. In some embodiments, the outer surface 1502 of the support ring 1500 may be flat. In some embodiments , the outer surface 1502 of the support ring 1500 may be substantially axially planar. The inner surface 1504 of the support ring 1500 may be configured to engage the inner surfaces 11 16, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 1306, 1406 of the sheet inserts 1100, 1200, 13 00, 1400. In some embodiments , the inner surface 1504 of the support ring 1500 may be configured to engage the inner surfaces 11 In some embodiments, the inner surface 1504 of the support ring 1500 may be flat. In some embodiments, the inner surface 1504 of the support ring 1500 may be substantially axially planar.

[0028] As shown in FIG. 16, the support ring 1600 generally includes an outer surface 1602, an inner surface 1604 opposite the outer surface 1602, a first end 1606, and a second end 1608 opposite the first end 1606. The outer surface 1602 of the support ring 1600 may be configured to engage the inner surfaces 1114, 1214, 1314, 1414 of the outer seal lips 1104, 1204, 1304, 1404 of the seat inserts 1100, 1200, 1300, 1400. In some embodiments, the outer surface 1602 of the support ring 1600 may be angled. In some embodiments, the outer surface 1602 of the support ring 1600 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the outer surface 1602 of the support ring 1600 may have an angle (α) of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees. In some embodiments, the outer surface 1602 of the support ring 1600 may have an angle (α) of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less. Further, the outer surface 1602 of the support ring 1600 may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less. It will be appreciated that this is possible.

[0029] ​​The inner surface 1604 of the support ring 1600 may be configured to engage the inner surfaces 1116, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 1306, 1406 of the sheet inserts 1100, 1200, 1300, 1400. In some embodiments, the inner surface 1604 of the support ring 1600 may be angled. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) relative to the longitudinal axis 104 of the valve 100. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less. Additionally, it will be understood that the inner surface 1604 of the support ring 1600 may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less. In addition, in some embodiments, the inner surface 1604 of the support ring 1600 may have an angle substantially the same as the outer surface 1602 of the support ring 1600. However, in some embodiments, the inner surface 1604 of the support ring 1600 may have an angle different from the outer surface 1602 of the support ring 1600. The inner surface 1604 of the support ring 1600 may be configured to engage the inner surfaces 1116, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 1306, 1406 of the sheet inserts 1100, 1200, 1300, 1400. In some embodiments, the inner surface 1604 of the support ring 1600 may be configured to engage the inner surfaces 1116, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 1306, 1406 of the sheet inserts 1100, 1200, 1300, 1400. In some embodiments, the inner surface 1604 of the support ring 1600 may be angled. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) relative to the longitudinal axis 104 of the valve 100. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) relative to the longitudinal axis 104 of the valve 100. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less. In some embodiments, the inner surface 1604 of the support ring 1600 may have an angle (α) of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less. Additionally, it will be understood that the inner surface 1604 of the support ring 1600 may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less. Additionally, it will be understood that the inner surface 1604 of the support ring 1600 may have an angle (α) between any of these minimum and maximum values, such as at least 5 degrees and 45 degrees or less. In addition, in some embodiments, the inner surface 1604 of the support ring 1600 may have an angle substantially the same as the outer surface 1602 of the support ring 1600. However, in some embodiments, the inner surface 1604 of the support ring 1600 may have an angle different from the outer surface 1602 of the support ring 1600. However, in some embodiments, the inner surface 1604 of the support ring 1600 may have an angle different from the outer surface 1602 of the support ring 1600. However, in some embodiments, the inner surface 1604 of the support ring 1600 may have an angle different from the outer surface 1602 of the support ring 1600.

[0030] As shown in FIG. 17, the support ring 1700 generally includes an outer surface 1702, an inner surface 1704 opposite the outer surface 1702, a first end 1706, and a second end opposite the first end 1706. As shown in FIG. 17, the support ring 1700 generally includes an outer surface 1702, an inner surface 1704 opposite the outer surface 1702, a first end 1706, and a second end opposite the first end 1706. It may also include an end portion 1708 of 2. The outer surface 1702 of the support ring 1700 is configured to engage with the inner surfaces 1114, 1214, 1314, and 1414 of the outer seal lips 1104, 1204 , 1304, and 1404 of the seat inserts 1100, 1200, 1300, and 1400. In some embodiments, the outer surface 1702 of the support ring 1700 may be arc-shaped or curved. The inner surface 1704 of the support ring 1700 is configured to engage with the inner surfaces 1116, 1216, 1316, and 1416 of the inner seal lips 1106, 1206, 1306, and 1406 of the seat inserts 1100, 1200, 1300, and 1400. In some embodiments, the inner surface 170 4 of the support ring 1500 may be arc-shaped or curved. As shown in FIG. 18, the support ring 1800 generally includes an outer surface 1802, an inner surface 180 4 on the opposite side of the outer surface 1802, a first end portion 1806, and a second end portion 1808 on the opposite side of the first end portion 1806. The outer surface 1802 of the support ring 1800 is configured to engage with the inner surfaces 1114, 1214, 1314, and 1414 of the outer seal lips 1104, 1204

[0031] , 1304, and 1404 of the seat inserts 1100, 1200, 1300, and 1400. In some embodiments, the outer surface 1802 of the support ring 1800 may be doubly angled. In some embodiments, the first angled portion 1802a and the second angled portion 1802b of the outer surface 18 02 of the support ring 1800 may have an angle (α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the support li The first angled portion 1802a of the outer surface 1802 of the support ring 1800 may have an angle (α ) ranging from 0 to 45 degrees. In some embodiments, the second angled portion 1802b of the outer surface 1802 of the support ring 1800 may have an angle (α) ranging from 0 to 45 degrees. Further, it will be understood that the first angled portion 1802a of the outer surface 1802 of the support ring 1800 and the second angled portion 1802b of the outer surface 1802 of the support ring 1800 may have different angles.

[0032] The inner surface 1804 of the support ring 1800 may be configured to engage the inner surfaces 1116, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 1306, 1406 of the sheet inserts 1100, 1200, 1300, 1400. In some embodiments, the inner surface 1804 of the support ring 1800 may be doubly angled. In some embodiments, the first angled portion 1804a and the second angled portion 1804b of the inner surface 1804 of the support ring 1800 may have an angle ( α) with respect to the longitudinal axis 104 of the valve 100. In some embodiments, the first angled portion 1804a of the inner surface 1804 of the support ring 1800 may have an angle (α) ranging from 0 to 45 degrees. In some embodiments, the second angled portion 1804b of the inner surface 1804 of the support ring 1800 may have an angle ( α) ranging from 0 to 45 degrees. Further, it will be understood that the first angled portion 1804a of the inner surface 1804 of the support ring 1800 and the second angled portion 1804b of the inner surface 1804 of the support ring 1800 may have different angles.

[0033] In some embodiments, the outer surface 1802 of the support ring 1800 and the support ring 1800 The inner surface 1804 may be symmetrical. In other embodiments, the outer surface 1802 of the support ring 1800 and the inner surface 1804 of the support ring 1800 may be asymmetrical. In some embodiments, the first angled portions 1802a, 1804a may have substantially the same angle. In other embodiments, the first angled portions 1802a, 1804a may have different angles. In some embodiments, the second angled portions 1802b, 18 04b may have substantially the same angle. In other embodiments, the second angled portions 1802b, 1804b may have different angles.

[0034] Embodiments of the support rings 1500, 1600, 1700, 1800 may also have outer surfaces 1502, 1602, 17 02, 1802 that are different from their respective inner surfaces 1504, 1604, 1704, 1804. For example, the outer surfaces 1502, 1602, 1702, 1802 and the inner surfaces 1504, 1604, 1704, 1804 may comprise any combination of flat surfaces, angled surfaces, curved surfaces, or double-angled surfaces as disclosed herein.

[0035] In some embodiments, the support rings 1500, 1600, 1700, 1800 may be formed from a metallic material. In some embodiments, the metallic material may be a nickel-chromium-based alloy such as Inconel (registered trademark), a nickel-based alloy, a cobalt-chromium-nick el-molybdenum alloy, a cobalt-chromium-nickel alloy such as Elgiloy(registered trademark), nickel, titanium, tungsten, stainless steel, spring steel, steel, aluminum, zinc, copper, magnesium, tin, platinum, lead, iron, or bronze. In some embodiments In the embodiment, the support rings 1500, 1600, 1700, 1800 are disposed on a metal material. In some embodiments, the coating or plating may be The plating is gold plating, silver plating, nickel plating, aluminum chromium nitride (AlCr Titanium aluminum nitride (TiAlN) plating, any other wear-resistant metal plating Furthermore, in some embodiments, , the support rings 1500, 1600, 1700, 1800 are split rings or split bands may include:

[0036] When assembled, the seat insert assembly 1050 is a seat insert for the valve 100. The support ring 1500 may be at least partially disposed within the cavity 110. The first ends 1506, 1606, 1706, 1806 of 600, 1700, 1800 are It may be in contact with the rear surface 116 of the seat insert cavity 110 of the valve 100. The second ends 1508, 1600 of the support rings 1500, 1600, 1700, 1800 8, 1708, 1808 are the second support rings 1500, 1600, 1700, 1800 Ends 1508, 1608, 1708, 1808 and seat inserts 1100, 1200 , 1300, 1400 and the inner ends 1118, 1218, 1318, 1418 of the Or, the seat inserts 1100, 1200, 1300, 1400 are used so that there is a gap. The inner ends 1118, 1218, 1318, 1418 of the In some embodiments, the second end 1 of the support ring 1500, 1600, 1700, 1800 508, 1608, 1708, 1808 may be flat. The second ends 1508, 1608, 1708, 1808 of the support rings 1500, 1600, 1700, 1800 may be curved or rounded.

[0037] The support rings 1500, 1600, 1700, 1800 engage with the seal lips 1104, 1 106, 1204, 1206, 1304, 1306, 1404, 1406 and are configured to bias the seal lips 1104, 1106, 1204, 1206, 1304, 1306, 1404, 1406 against a part of the sheet insert cavity 110. More specifically, the support rings 1500, 1600, 1700, 1800 may be disposed between the inner surfaces 1114, 1214, 13 14, 1414 of the outer seal lips 1104, 1204, 1304, 1404 and the inner surfaces 11 16, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 1306, 1406. In some embodiments, the outer surfaces 1502, 1602, 1 702, 1802 of the support rings 1500, 1600, 1700, 1800 engage with the inner surfaces 1114, 1214, 1314, 1414 of the outer seal lips 1104, 1204, 1304, 1404 such that the outer surfaces 1110, 1210, 1310, 1410 of the outer seal lips 1104, 1204, 1304, 1404 contact the first inner surface 112 of the sheet insert cavity 11 0 of the valve 100, and are configured to bias the outer seal lips 1104, 1204, 1304, 1404 against the first inner surface 112 of the sheet insert cavity 110. Additionally, in some embodiments, the inner surfaces 1504, 1604, 1 704, 1804 of the support rings 1500, 1600, 1700, 1800 engage with the inner surfaces 1114, 1214, 1314, 1414 of the outer seal lips 1104, 1204, 1304, 1404 such that the outer surfaces 1110, 1210, 1310, 1410 of the outer seal lips 1104, 1204, 1304, 1404 contact the first inner surface 112 of the sheet insert cavity 11 0 of the valve 100, and are configured to bias the outer seal lips 1104, 1204, 1304, 1404 against the first inner surface 112 of the sheet insert cavity 110. In addition, in some embodiments, the inner surfaces 1504, 1604, 1 704, 1804 of the support rings 1500, 1600, 1700, 1800 engage with the inner surfaces 1114, 1214, 1314, 1414 of the outer seal lips 1104, 1204, 1304, 1404, and are configured to bias the outer seal lips 1104, 1204, 1304, 1404 against the first inner surface 112 of the sheet insert cavity 110. Furthermore, in some embodiments, the inner surfaces 1504, 1604, 1 704, 1804 of the support rings 1500, 1600, 1700, 1800 engage with the inner surfaces 1114, 1214, 1314, 1414 of the outer seal lips 1104, 1204, 1304, 1404, and are configured to bias the outer seal lips 1104, 1204, 1304, 1404 against the first inner surface 112 of the sheet insert cavity 110. Moreover, in some embodiments, the inner surfaces 1504, 1604, 1 704 and 1804 are the outer surfaces of the inner seal lips 1106, 1206, 1306, 1406 1112, 1212, 1312, 1412 engage with the inner surfaces 1116, 1216, 1316, 1416 of the inner seal lips 1106, 1206, 130 6, 1406 so that they contact the second inner surface 114 of the seat insert cavity 11 0, and may be configured to bias the inner seal lips 1106, 1206, 130 6, 1406 against the second inner surface 114 of the seat insert cavity 110 . In this configuration, the pressure from the contact between the seat inserts 1100, 1200, 1300, 1400 and the ball 108 of the valve 10

[0038] 0 biases or presses the support rings 1500, 1600, 1700 1800 axially towards the seat inserts 1100, 1200, 1300, 1400 to bias the seal lips 1104, 1106, 1204, 1206, 130 4, 1306, 1404, 1406 against the inner surfaces 112, 114 of the seat insert cavity 110, increasing the contact pressure against the inner surfaces 112, 114 of the seat insert cavity 110 and preventing leakage through the second leakage path by these combinations or a combination thereof. Further, it will be understood that embodiments of the seat insert assembly 1050 may include any combination of seat inserts 1 100, 1200, 1300, 1400 and support rings 1500, 1600, 1700, 1800 . FIG. 19 is a flow chart of a method 1900 for preventing leakage within a valve according to an embodiment of the present disclosure . The method 1900, at block 1902, includes a valve body and selectively within the valve

[0039] chart. The method 1900, at block 1902, includes a valve body and selectively within the valve chart. The method 1900, at block 1902, includes a valve body and selectively within the valve ​a rotatable ball, a seat insert cavity formed within the valve body, and a seat insert assembly according to any of the embodiments disclosed herein and a valve comprising the same can be initiated by providing. Method 1900 can continue in block 1904 by operating the valve. Method 1900 can continue in block 190 6 by selectively rotating the ball to prevent fluid flow along the flow path through the valve . Method 1900 can continue in block 1908 by forming or maintaining a first seal interface between the first seal surface of the seat insert and the ball to prevent leakage through the first leakage path while simultaneously selectively rotating the ball to prevent fluid flow along the flow path through the valve, and forming or maintaining a second seal interface between the second seal surface and the inclined wall to prevent leakage through the second leakage path . In some embodiments, operating the valve may be performed at cryogenic temperatures . In still other embodiments, the valve, seat insert assembly, or method of preventing leakage within the valve can include one or more of the following embodiments .

[0040]

[0041] Embodiment 1. A seat insert assembly comprising a seat insert including at least one seal lip and a support ring engaged with the at least one seal lip and configured to bias the at least one seal lip against a portion of the seat insert cavity .

[0042] ​​​​Embodiment 2. The seat insert comprises a first sealing surface that forms a first sealing interface with the ball of the valve to prevent leakage through the first leakage path, the seat insert assembly according to Embodiment 1. seat insert assembly.

[0043] Embodiment 3. The seat insert assembly according to Embodiment 2, wherein the first sealing surface is curved, curvilinear, planar, or a combination thereof.

[0044] Embodiment 4. The seat insert assembly according to Embodiment 2 or 3, wherein at least one sealing lip forms a second sealing interface with a part of the seat insert cavity to prevent leakage through the second leakage path.

[0045] Embodiment 5. A valve comprising a valve body, a ball selectively rotatable within the valve body, a seat insert cavity formed within the valve body, and a seat insert assembly at least partially disposed within the seat insert cavity, the seat insert assembly comprising a seat insert having at least one sealing lip and a support ring engaged with the at least one sealing lip and configured to bias the at least one sealing lip against a part of the seat insert cavity. valve.

[0046] Embodiment 6. The valve according to Embodiment 5, wherein the seat insert comprises a first sealing surface that forms a first sealing interface with the ball of the valve to prevent leakage through the first leakage path.

[0047] Embodiment 7. The first sealing surface is curved, curvilinear, planar, or​​​​​​​​​​​ The valve according to Embodiment 6, which is a combination thereof.

[0048] Embodiment 8. At least one seal lip forms a second sealing interface with a part of the seat insert cavity to prevent leakage through the second leakage path, the valve according to Embodiment 6 or 7.

[0049] Embodiment 9. At least one seal lip includes a single seal lip, the seat insert assembly or valve according to any one of Embodiments 1 to 8.

[0050] Embodiment 10. The seal lip is an outer seal lip, and a part of the seat insert cavity is the first inner surface of the seat insert cavity, the seat insert assembly or valve according to Embodiment 9.

[0051] Embodiment 11. The seal lip has an inner surface, the seat insert assembly or valve according to Embodiment 10.

[0052] Embodiment 12. The inner surface of the seal lip is flat, the seat insert assembly or valve according to Embodiment 11.

[0053] Embodiment 13. The inner surface of the seal lip is angled, the seat insert assembly or valve according to Embodiment 11.

[0054] Embodiment 14. The inner surface of the seal lip has an angle of at least once, at least twice, at least three times, at least four times, at least five times, at least ten times, at least fifteen times, at least twenty times, at least twenty-five times, or at least thirty times, the seat insert assembly or valve according to Embodiment 13. ​​​

[0055] Embodiment 15. The inner surface of the seal lip has an angle of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less, the seat insert assembly or valve according to Embodiment 14.

[0056] Embodiment 16. The inner surface of the seal lip is curved, the seat insert assembly or valve according to Embodiment 11.

[0057] Embodiment 17. The inner surface of the seal lip includes a seal bump, teeth, or undulations, the seat insert assembly or valve according to any one of Embodiments 11 to 16.

[0058] Embodiment 18. The support ring has an outer surface configured to engage with the inner surface of the seal lip, the seat insert assembly or valve according to any one of Embodiments 11 to 17.

[0059] Embodiment 19. The outer surface of the support ring is flat, the seat insert assembly or valve according to Embodiment 18.

[0060] Embodiment 20. The outer surface of the support ring is angled, the seat insert assembly or valve according to Embodiment 18.

[0061] Embodiment 21. The outer surface of the support ring has an angle of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees, the seat insert assembly or valve according to Embodiment 20.

[0062] ​​​​​​​Embodiment 22. The outer surface of the support ring has an angle of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less, of the sheet insert assembly or valve according to Embodiment 21

[0063] Embodiment 23. The outer surface of the support ring is arc-shaped, of the sheet insert assembly or valve according to Embodiment 18

[0064] Embodiment 24. The outer surface of the support ring is doubly angled, of the sheet insert assembly or valve according to Embodiment 18

[0065] Embodiment 25. The first angled portion of the outer surface of the support ring is 0 to 45 degrees, of the sheet insert assembly or valve according to Embodiment 24

[0066] Embodiment 26. The second angled portion of the outer surface of the support ring is 0 to 45 degrees, of the sheet insert assembly or valve according to Embodiment 25

[0067] Embodiment 27. The first angled portion of the outer surface of the support ring and the second angled portion of the outer surface of the support ring have different angles, of the sheet insert assembly or valve according to Embodiment 26

[0068] Embodiment 28. The first end of the support ring is in contact with the rear surface of the sheet insert cavity, of the sheet insert assembly or valve according to any one of Embodiments 1 to 27

[0069] Embodiment 29. The rear surface is radial, of the sheet insert assembly or valve according to Embodiment 28

[0070] ​​​​​​​​Embodiment 30. The second end of the support ring does not contact the inner end of the seat insert such that there is a gap between the second end of the support ring and the seat insert. The seat insert assembly or valve according to any one of Embodiments 28 to 29.

[0071] Embodiment 31. The seat insert assembly or valve according to Embodiment 30, wherein the second end is flat.

[0072] Embodiment 32. The seat insert assembly or valve according to Embodiment 30, wherein the second end is rounded.

[0073] Embodiment 33. The seat insert assembly or valve according to any one of Embodiments 28 to 32, wherein the inner surface of the support ring contacts the inner surface of the seat insert cavity.

[0074] Embodiment 34. The support ring biases the seal lip against the inner surface of the seat insert cavity. The seat insert assembly or valve according to any one of Embodiments 10 to 33.

[0075] Embodiment 35. The pressure from the contact between the seat insert and the ball of the valve biases or presses the support ring axially toward the seat insert, biases the seal lip against the inner surface of the seat insert cavity, increases the contact pressure against the inner surface of the seat insert cavity, or a combination thereof to prevent leakage through the second leakage path. The seat insert assembly or valve of Embodiment 34.

[0076] Embodiment 36. The seal lip contacts the seal band that contacts the seat insert cavity. ​​​​​​​​​​​A sheet insert assembly or valve according to any of embodiments 1 to 35, comprising protrusions, teeth, or undulations. Or a valve.

[0077] Embodiment 37. A sheet insert assembly or valve according to any of embodiments 1 to 8, wherein at least one seal lip includes a plurality of seal lips. Or a valve.

[0078] Embodiment 38. A sheet insert assembly or valve according to embodiment 37, wherein the plurality of seal lips includes an outer seal lip and an inner seal lip, and a part of the sheet insert cavity is the first inner surface of the sheet insert cavity and the second inner surface of the sheet insert cavity. Or a valve. Or a valve.

[0079] Embodiment 39. A sheet insert assembly or valve according to embodiment 38, wherein the outer seal lip has an inner surface, and the inner seal lip has an inner surface. Or a valve.

[0080] Embodiment 40. A sheet insert assembly or valve according to embodiment 39, wherein the inner surfaces of the outer seal lip and the inner seal lip are flat. Or a valve.

[0081] Embodiment 41. A sheet insert assembly or valve according to embodiment 39, wherein the inner surfaces of the outer seal lip and the inner seal lip are angled. Or a valve.

[0082] Embodiment 42. A sheet insert assembly or valve according to embodiment 41, wherein the inner surfaces of the outer seal lip and the inner seal lip have substantially the same angle. Or a valve.

[0083] Embodiment 43. A sheet insert assembly or valve according to embodiment 41, wherein the inner surface of the outer seal lip and the inner surface of the inner seal lip have different angles. Or a valve.

[0084] Embodiment 44. The inner surfaces of the outer seal lip and the inner seal lip are at least once at least twice, at least three times, at least four times, at least five times, at least ten times , at least fifteen times, at least twenty times, at least twenty-five times, or at least thirty times of an angle degrees, the sheet insert assembly or valve according to any one of Embodiments 41 to 43 .

[0085] Embodiment 45. The inner surfaces of the outer seal lip and the inner seal lip have an angle of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less , the sheet insert assembly or valve according to Embodiment 44.

[0086] Embodiment 46. The inner surfaces of the outer seal lip and the inner seal lip are curved, the implementation the sheet insert assembly or valve according to Embodiment 39.

[0087] Embodiment 47. The inner surfaces of the outer seal lip and the inner seal lip are provided with seal bumps, teeth , or undulations, the sheet insert assembly according to any one of Embodiments 39 to 46 ly or valve.

[0088] Embodiment 48. The support ring includes an outer surface configured to engage with the inner surface of the outer seal lip and an inner surface configured to engage with the inner surface of the inner seal lip, the implementation the sheet insert assembly or valve according to any one of Embodiments 39 to 47.

[0089] Embodiment 49. The outer surface of the support ring is flat, the sheet insert according to Embodiment 48 -to assembly or valve.

[0090] Embodiment 50. The outer surface of the support ring is angled, as described in Embodiment 48, of the sheet insert assembly or valve.

[0091] Embodiment 51. The outer surface of the support ring has an angle of at least once, at least twice, at least three times, at least four times, at least five times, at least ten times, at least fifteen times, at least twenty times, at least twenty-five times, or at least thirty times, as described in Embodiment 50, of the sheet insert assembly or valve.

[0092] Embodiment 52. The outer surface of the support ring has an angle of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less, as described in Embodiment 51, of the sheet insert assembly or valve.

[0093] Embodiment 53. The outer surface of the support ring is arcuate, as described in Embodiment 48, of the sheet in sert assembly or valve.

[0094] Embodiment 54. The outer surface of the support ring is doubly angled, of Embodiment 48, of the sheet insert assembly or valve.

[0095] Embodiment 55. The first angled portion of the outer surface of the support ring is from 0 to 45 degrees, of the sheet insert assembly or valve as described in Embodiment 54.

[0096] Embodiment 56. The second angled portion of the outer surface of the support ring is from 0 to 45 degrees, of the sheet insert assembly or valve as described in Embodiment 55.

[0097] Embodiment 57. The first angled portion of the outer surface of the support ring and the second of the outer surface of the support ring The sheet insert assembly according to Embodiment 56, in which the angled portion has different angles Plug or valve.

[0098] Embodiment 58. The sheet insert assembly or valve according to Embodiment 48, in which the inner surface of the support ring is flat .

[0099] Embodiment 59. The sheet insert assembly or valve according to Embodiment 48, in which the inner surface of the support ring is angled .

[0100] Embodiment 60. The sheet insert assembly or valve according to Embodiment 59, in which the inner surface of the support ring has substantially the same angle as the outer surface of the support ring .

[0101] Embodiment 61. The sheet insert assembly or valve according to Embodiment 59, in which the inner surface of the support ring has a different angle from the outer surface of the support ring .

[0102] Embodiment 62. The sheet insert assembly or valve according to any one of Embodiments 59 to 61, in which the inner surface of the support ring has an angle of at least 1 degree, at least 2 degrees, at least 3 degrees, at least 4 degrees, at least 5 degrees, at least 10 degrees, at least 15 degrees, at least 20 degrees, at least 25 degrees, or at least 30 degrees .

[0103] Embodiment 63. The sheet insert assembly or valve according to Embodiment 62, in which the inner surface of the support ring has an angle of 45 degrees or less, 40 degrees or less, 35 degrees or less, 30 degrees or less, 25 degrees or less, 20 degrees or less, or 15 degrees or less .

[0104] Embodiment 64. The sheet insert assembly or valve according to Embodiment 48, in which the inner surface of the support ring is arcuate .

[0105] Embodiment 65. The seat insert assembly or valve according to Embodiment 48, wherein the inner surface of the support ring is doubly angled.

[0106] Embodiment 66. The seat insert assembly or valve according to Embodiment 65, wherein the first angled portion of the inner surface of the support ring is 0 to 45 degrees.

[0107] Embodiment 67. The seat insert assembly or valve according to Embodiment 66, wherein the second angled portion of the inner surface of the support ring is 0 to 45 degrees.

[0108] Embodiment 68. The seat insert assembly or valve according to Embodiment 67, wherein the first angled portion of the inner surface of the support ring and the second angled portion of the inner surface of the support ring have different angles.

[0109] Embodiment 69. The seat insert assembly or valve according to any one of Embodiments 48 to 68, wherein the inner surface of the support ring and the outer surface of the support ring are symmetric.

[0110] Embodiment 70. The seat insert assembly or valve according to any one of Embodiments 48 to 68, wherein the inner surface of the support ring and the outer surface of the support ring are asymmetric.

[0111] Embodiment 71. The seat insert assembly or valve according to any one of Embodiments 37 to 70, wherein the first end of the support ring is in contact with the rear surface of the seat insert cavity.

[0112] Embodiment 72. The seat insert assembly or valve according to Embodiment 71, wherein the rear surface is radial.

[0113] ​​​​​​​​​Embodiment 73. The second end of the support ring does not contact the inner end of the seat insert such that there is a gap between the second end of the support ring and the seat insert. The seat insert assembly or valve according to any one of Embodiments 71 to 72.

[0114] Embodiment 74. The seat insert assembly or valve according to Embodiment 73, wherein the second end is disposed between the outer surface and the inner surface of the support ring.

[0115] Embodiment 75. The seat insert assembly or valve according to Embodiment 74, wherein the second end is flat.

[0116] Embodiment 76. The seat insert assembly or valve according to Embodiment 74, wherein the second end is rounded.

[0117] Embodiment 77. The seat insert assembly or valve according to any one of Embodiments 71 to 76, wherein the support ring is disposed between the inner surfaces of the outer seal lip and the inner seal lip.

[0118] Embodiment 78. The seat insert assembly or valve according to any one of Embodiments 38 to 77, wherein the support ring biases the outer seal lip against the first inner surface of the seat insert cavity and biases the inner seal lip against the second inner surface of the seat insert cavity.

[0119] Embodiment 79. The pressure from the contact between the seat insert and the ball of the valve axially biases or presses the support ring toward the seat insert, biasing the outer seal lip against the first inner surface of the seat insert cavity and biasing the second ​​​​​​​​​​​​bias the inner seal lip against the inner surface and increase the contact pressure against the first inner surface of the seat insert cavity and the second inner surface of the seat insert cavity, or a combination thereof, to prevent leakage through the second leakage path, a seat insert assembly or valve of Embodiment 78.

[0120] Embodiment 80. A seat insert assembly or valve according to any one of Embodiments 1 to 8 or 37 to 79, wherein the seal lip comprises a seal bar, teeth, or undulations that contact the seat insert cavity.

[0121] Embodiment 81. A seat insert assembly or valve according to any one of Embodiments 1 to 80, wherein the seat insert is formed from PTFE, fluoropolymer, perfluoropolymer, PTFE, PVF, PVDF, PCTFE, PFA, FEP, ETFE, ECT FE, PCTFE, polyarylene ketone such as PEKK, polysulfone such as PPS, PPSU, PSU, PPE, or PPO, aromatic polyamide such as PPA, thermoplastic polyimide such as PEI or TPI, or any combination thereof.

[0122] Embodiment 82. A seat insert assembly or valve according to Embodiment 81, wherein the seat insert is formed from a material modified with at least one filler.

[0123] Embodiment 83. A seat insert assembly or valve according to any one of Embodiments 1 to 82, wherein the support ring is formed from a metallic material.

[0124] Embodiment 84. The metal material is a nickel-chromium-based such as Inconel (registered trademark) alloy, nickel-based alloy, cobalt-chromium-nickel-molybdenum alloy, Elgiloy (registered trademark) and other cobalt-chromium-nickel alloys, nickel, titanium, tungsten , stainless steel, spring steel, steel, aluminum, zinc, copper, magnesium, tin, platinum, lead , iron, or bronze, the sheet insert assembly or valve according to Embodiment 83

[0125] Embodiment 85. Further comprising a coating or plating disposed on the metal material, the embodiment the sheet insert assembly or valve according to Embodiment 84

[0126] Embodiment 86. The coating or plating is gold plating, silver plating, nickel plating, aluminum chromium nitride (AlCrN) plating, titanium aluminum nitride (TiAlN) plating, any other wear-resistant metal plating, or any combination thereof, the embodiment the sheet insert assembly or valve according to Embodiment 85

[0127] Embodiment 87. The support ring is a split ring or a split band, Embodiments 1 to 8 the sheet insert assembly or valve according to any one of 6

[0128] Embodiment 88. A method for preventing leakage in a valve, comprising a valve body and selectively rotating within the valve possible ball, a sheet insert cavity formed in the valve body, and the foregoing embodiments providing a valve comprising the sheet insert assembly according to any one of, and operating the valve and selectively rotating the ball to prevent the flow of fluid along the flow path through the valve and preventing leakage through the first leakage path by the first of the sheet insert Form or maintain a first seal interface between the sealing surface and the ball, and at the same time, prevent the flow of fluid along the flow path through the valve while the ball is selectively rotated. While the ball is selectively rotated to prevent the flow of fluid along the flow path through the valve, form or maintain a second seal interface between the second sealing surface and the inclined wall to prevent leakage through the second leakage path. This includes the method of maintaining. Including the method of maintaining.

[0129] Embodiment 89. The method according to embodiment 88, wherein operating the valve is performed under cryogenic conditions. The method described in the above.

[0130] This specification uses examples to disclose embodiments including the best mode and to enable those skilled in the art to make and use the present invention. The scope of patentability is defined by the claims and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal words of the claims or if they include equivalent structural elements that do not differ substantially from the literal words of the claims. In a general description or example, not all of the activities described above are required, and in some cases, some of the specific activities may not be required. It should be noted that one or more additional activities may be performed in addition to the activities described. Further, the order in which the activities are listed is not necessarily the order in which they are performed. In the foregoing specification, concepts have been described with reference to specific embodiments. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention as set forth in the following claims. Therefore, the specification and drawings are... In the foregoing specification, concepts have been described with reference to specific embodiments. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention as set forth in the following claims. Therefore, the specification and drawings are... In the foregoing specification, concepts have been described with reference to specific embodiments. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention as set forth in the following claims. Therefore, the specification and drawings are... In the foregoing specification, concepts have been described with reference to specific embodiments. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention as set forth in the following claims. Therefore, the specification and drawings are...

[0131] In a general description or example, not all of the activities described above are required, and in some cases, some of the specific activities may not be required. It should be noted that one or more additional activities may be performed in addition to the activities described. Further, the order in which the activities are listed is not necessarily the order in which they are performed. In a general description or example, not all of the activities described above are required, and in some cases, some of the specific activities may not be required. It should be noted that one or more additional activities may be performed in addition to the activities described. Further, the order in which the activities are listed is not necessarily the order in which they are performed. In a general description or example, not all of the activities described above are required, and in some cases, some of the specific activities may not be required. It should be noted that one or more additional activities may be performed in addition to the activities described. Further, the order in which the activities are listed is not necessarily the order in which they are performed. In a general description or example, not all of the activities described above are required, and in some cases, some of the specific activities may not be required. It should be noted that one or more additional activities may be performed in addition to the activities described. Further, the order in which the activities are listed is not necessarily the order in which they are performed.

[0132] In the foregoing specification, concepts have been described with reference to specific embodiments. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention as set forth in the following claims. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the present invention as set forth in the following claims. Therefore, the specification and drawings are... It should be considered in an illustrative sense rather than a limiting sense, and all such modifications are intended to be included within the scope of the present invention.

[0133] As used herein, the terms "comprises," "comprising" ", "includes," "including," "has," "having," or any other variation thereof are intended to cover non-exclusive inclusion. For example, a process, method, article, or apparatus that includes a list of features is not necessarily limited to only those features, may include other features not expressly listed or inherent to such process , method, article, or apparatus. Further, unless there is contrary language, "or" refers to an inclusive "or" and not an exclusive "or". For example , condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or absent), A is false (or absent) and B is true ( or present), and both A and B are true (or present). Also, the use of "a" or "an" is employed to describe the elements and components described herein. This is done merely for convenience and to give a general sense of the scope of the present invention. This description should be read to include one or at least one and, unless it is obvious that the singular also means the contrary, also includes the plural.

[0134]

[0135] Advantages, other advantages, and solutions to problems are described above with respect to specific embodiments. However, any feature that may more prominently bring about benefits, advantages, problem solutions, and any benefits, advantages, or solutions should not be construed as an important, necessary, or essential feature of any or all of the claims.

[0136] After reading this specification, those skilled in the art will understand that certain features are described herein in the context of separate embodiments for clarity and can be provided in combination in a single embodiment. Conversely, for the sake of brevity, the various features described in the context of a single embodiment may be provided separately or in any partial combination. Further, references to values recited in ranges include any and every value within that range. [[ID=1_{}4]] ​

Claims

1. A sheet insert assembly comprising: A sheet insert including at least one seal lip; A support ring engaged with the at least one seal lip and configured to bias the at least one seal lip against a portion of a sheet insert cavity; And a support ring configured to bias the at least one seal lip against a portion of a sheet insert cavity. A sheet insert assembly comprising:

2. The sheet insert assembly according to claim 1, wherein the sheet insert comprises a first sealing surface that forms a first sealing interface with a ball of a valve to prevent leakage through a first leakage path. The sheet insert assembly according to claim 1, wherein the sheet insert comprises a first sealing surface that forms a first sealing interface with a ball of a valve to prevent leakage through a first leakage path. A sheet insert assembly according to claim 1, wherein the first sealing surface is curved, curvilinear, planar, or a combination thereof.

3. The sheet insert assembly according to claim 2, wherein the first sealing surface is curved, curvilinear, planar, or a combination thereof. A sheet insert assembly according to claim 2, wherein the first sealing surface is curved, curvilinear, planar, or a combination thereof.

4. The sheet insert assembly according to claim 2 or 3, wherein the at least one seal lip forms a second sealing interface with the portion of the sheet insert cavity to prevent leakage through a second leakage path. The sheet insert assembly according to claim 2 or 3, wherein the at least one seal lip forms a second sealing interface with the portion of the sheet insert cavity to prevent leakage through a second leakage path. A sheet insert assembly according to claim 2 or 3, wherein the at least one seal lip forms a second sealing interface with the portion of the sheet insert cavity to prevent leakage through a second leakage path.

5. A valve comprising: A valve body; A ball selectively rotatable within the valve body; A sheet insert cavity formed within the valve body; A sheet insert assembly at least partially disposed within the sheet insert cavity, the sheet insert assembly comprising: A sheet insert including at least one seal lip; A support ring engaged with the at least one seal lip and configured to bias the at least one seal lip against a portion of the sheet insert cavity; A support ring engaged with the at least one seal lip and configured to bias the at least one seal lip against a portion of the sheet insert cavity. A sheet insert assembly including a support ring engaged with the at least one seal lip and configured to bias the at least one seal lip against a portion of the sheet insert cavity. And a sheet insert assembly including a support ring engaged with the at least one seal lip and configured to bias the at least one seal lip against a portion of the sheet insert cavity. A valve comprising:

6. The valve according to claim 5, wherein the sheet insert comprises a first sealing surface that forms a first sealing interface with the ball of the valve to prevent leakage through a first leakage path. The valve according to claim 5, wherein the sheet insert comprises a first sealing surface that forms a first sealing interface with the ball of the valve to prevent leakage through a first leakage path.

7. The valve according to claim 6, wherein the first sealing surface is curved, curvilinear, planar, or a combination thereof. The valve according to claim 6, wherein the first sealing surface is curved, curvilinear, planar, or a combination thereof.

8. The valve according to claim 6 or 7, wherein the at least one seal lip forms a second sealing interface with the portion of the sheet insert cavity to prevent leakage through a second leakage path. The valve according to claim 6 or 7, wherein the at least one seal lip forms a second sealing interface with the portion of the sheet insert cavity to prevent leakage through a second leakage path. A valve according to claim 6 or 7, wherein the at least one seal lip forms a second sealing interface with the portion of the sheet insert cavity to prevent leakage through a second leakage path.

9. The sheet insert assembly or valve according to any one of claims 1 to 8, wherein the at least one seal lip comprises a single seal lip. The sheet insert assembly or valve according to any one of claims 1 to 8, wherein the at least one seal lip comprises a single seal lip.

10. wherein the seal lip is an outer seal lip, and the front portion of the seat insert cavity is the inner surface of the seat insert cavity, the seat insert assembly or valve according to claim 9.

11. The seat insert assembly or valve according to claim 10, wherein the seal lip has an inner surface.

12. The seat insert assembly or valve according to claim 11, wherein the inner surface of the seal lip is flat.

13. The seat insert assembly or valve according to claim 11, wherein the inner surface of the seal lip is angled.

14. The seat insert assembly or valve according to any one of claims 11 to 13, wherein the support ring has an outer surface configured to engage with the inner surface of the seal lip.

15. A method of preventing leakage within a valve, comprising: providing a valve comprising a valve body, a ball selectively rotatable within the valve, a seat insert cavity formed within the valve body, and a seat insert assembly according to any one of claims 1 to 14; operating the valve; selectively rotating the ball to prevent fluid flow along a flow path through the valve; forming or maintaining a first seal interface between the first seal surface of the seat insert and the ball to prevent leakage through a first leakage path, and while the ball is selectively rotated to prevent fluid flow along the flow path through the valve, forming or maintaining a second seal interface between the second seal surface and the inclined wall to prevent leakage through a second leakage path. A method comprising the above steps.

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