Nut for pipe connector assembly

Abstract

The present invention relates to a nut for a connector assembly for pipes, comprising: an annular nut body comprising a polymer and oriented along a central axis, the annular nut body including a circumferential split defining a first circumferential portion and a second circumferential portion, the first circumferential portion and the second circumferential portion being flexibly connected by a flexible bridge portion, the first circumferential portion including a first circumferential end and the second circumferential portion including a second circumferential end, the first circumferential end and the second circumferential end each including a coupling component adapted to secure the first circumferential end and the second circumferential end together.

Description

[Technical Field]

[0001] The present disclosure relates to a nut for a pipe fitting coupling assembly for connecting at least one tube to another component of a fluid delivery circuit, such as a connector, pump, valve, manifold, etc., suitable for use in corrosive and / or high purity fluid delivery circuits, but not limited thereto. [Background technology]

[0002] In the field of corrosive fluid transportation, coupling assemblies for connecting a pipe to a body portion of another component are already known. These coupling assemblies often include a ring portion that fits around the pipe and receives a curved end of the pipe at one end, and sealing is achieved by axially clamping the curved end of the pipe through the ring against a receiving surface. In some embodiments, the ring is covered by a nut to further contain the pipe. However, the nut may be insufficient in sealing, size, and compatibility. Therefore, there is a continuing need for improved coupling assemblies. [Brief explanation of the drawings]

[0003] The present disclosure will be better understood and its advantages will become more apparent from the following detailed description of embodiments thereof, given by way of non-limiting examples. The following description refers to the accompanying drawings, in which: [Figure 1] 1 is a perspective view of an exemplary connector assembly for tubing according to some embodiments. FIG. [Figure 2] FIG. 2 is an exemplary cross-sectional view taken along line II in FIG. [Figure 3] FIG. 3 is a view of detail III of FIG. 2. [Figure 4] 4 is an exemplary cross-sectional view taken along line IV in FIG. 1; [Figure 5] FIG. 5 is a view of detail V of FIG. 4. [Figure 6] FIG. 2 is an exemplary cross-sectional view taken along line II in FIG. [Figure 7] 10 is a cross-sectional view of another exemplary connector assembly for tubing, according to some embodiments. [Figure 8] FIG. 10 is a side view of a nut for an exemplary connector assembly for tubing, according to some embodiments. [Figure 9A] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. [Figure 9B] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. [Figure 9C] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. [Figure 9D] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. [Figure 9E] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. [Figure 9F] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. [Figure 9G] 10A-10C are cross-sectional views of a nut in an exemplary connector assembly for tubing, according to some embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0004] The following description in combination with the drawings is provided to aid in understanding the teachings disclosed herein. The following discussion focuses on specific implementations and embodiments of the teachings. This focus is provided to help explain the teachings and should not be construed as a limitation on the scope or applicability of the teachings. However, other embodiments may be used based on the teachings disclosed in this application.

[0005] The terms "comprises," "comprising," "includes," "including," "has," "having," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a method, article, or apparatus that includes a list of features is not necessarily limited to only those features, but may include other features not expressly listed or that are inherent to such method, article, or apparatus. Further, unless expressly stated to the contrary, "or" refers to an inclusive or, not an exclusive or. For example, condition A or B can be 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).

[0006] Additionally, the use of "a" or "an" is employed to describe elements and components described herein. This is done merely for convenience and to give a general sense of the scope of the invention. This description should be understood as one, at least one, or the singular as including the plural, or vice versa, unless it is clear that this is meant otherwise. For example, where a single embodiment is described herein, two or more embodiments can be used in place of the single embodiment. Similarly, where more than one embodiment is described herein, the single embodiment can be replaced with two or more embodiments.

[0007] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The materials, methods, and examples are illustrative only and are not intended to be limiting. Unless described herein, many details regarding specific materials and processing operations are conventional and can be found in tubing connector assembly art textbooks and other sources.

[0008] Embodiments described herein are generally directed to a nut for a connector assembly for a pipe, the nut body comprising a polymer and oriented below a central axis, the nut body including a circumferential split defining a first circumferential portion and a second circumferential portion, the first circumferential portion including a first circumferential end and the second circumferential portion including a second circumferential end, the first circumferential end and the second circumferential end each including a coupling component adapted to secure the first circumferential end and the second circumferential end together.

[0009] Embodiments described herein are generally directed to a nut for a pipe connector assembly comprising: an annular nut body oriented below a central axis, the annular nut body having a cross section along the central axis and including an axial protrusion including an external threaded portion and an end, and a radial protrusion disposed axially adjacent to the axial protrusion, the radial protrusion including a first flange protruding radially inward, at least one of the first flange or the end adapted to seal against an adjacent component, and the annular nut body further including a circumferential split.

[0010] Embodiments described herein generally relate to a pipe connector assembly including a body having an axially extending cavity, a ring adapted to be mounted around an active portion of a pipe, the ring having a support surface at one end adapted to receive a curved end of the pipe, a nut adapted to be threaded onto the body so as to engage the ring and axially press the curved end of the pipe against the receiving surface, and an annular receiver forming the receiving surface and removably mounted to the body, wherein the nut includes an annular nut body oriented below a central axis, the annular nut body having a cross section along the central axis and including an axial protrusion including an external threaded portion and an end, and a radial protrusion disposed axially adjacent the axial protrusion, and wherein at least one of the first flange or the end is adapted to seal against the receiver, or 2) the annular nut body includes a polymer and further includes a circumferential split.

[0011] Embodiments described herein are generally directed to a pipe connector assembly including a body having an axially extending cavity, an annular receiver defining a receiving surface and removably attached to the body, and a nut adapted to be threaded onto the body to engage the annular receiver and axially press the pipe against the receiving surface, wherein the nut includes an annular nut body oriented below a central axis, the annular nut body having a cross section along the central axis and including an axial protrusion including an external threaded portion and an end, and a radial protrusion disposed axially adjacent to the axial protrusion, and wherein at least one of the first flange or the end is adapted to seal against the receiver, or 2) the annular nut body includes a polymer and further includes a circumferential split.

[0012] FIG. 1 illustrates a connector assembly 1 according to an embodiment. As shown in FIG. 1, the connector assembly 1 according to certain embodiments can be for connecting one or more tubes 10, 110, 210 to another component of the same fluid transport circuit, which may include a body 2. Here, the term "fluid transport circuit" is understood to mean a set of connected conduits through which a fluid can pass. In some embodiments, the body 2 can be, for example, a pump, a valve, a fitting, a stopper, a manifold, a coupling, particularly a T-, I-, L-, or U-fitting, or a plug. The connector assembly 1 can be used to connect three branches 20, 120, 220 of three tubes 10, 110, 210 on the body 2 to form a T-connection. The body 2 can be provided with a through-hole extending in the axial direction. The adjective "axial" and the adverb "axially" are used subsequently with reference to the axial direction of the cavity in question. With respect to the same cavity, the radial direction is defined as the direction perpendicular to and passing through the axis of the cavity. The body 2 may include at least one through cavity to which the tubes 10, 110, 210 may be connected. It may be formed from a single integral part or from several parts suitably fastened together. At least a part of this cavity may form part of the fluid transport circuit in the extension of the tube.

[0013] 1 , connector assembly 1 includes, at first branch 20, a body portion defining a through cylindrical cavity 30 with a central axis X1; a ring 40 adapted to be mounted around an active portion of tube 10 and having a support surface 41 at one of its ends adapted to receive a curved end of tube 15; an annular receiver 50 removably mounted in cavity 30 of body 2 and defining a receiving surface 54 for curved end 15 of tube 10; and a nut 60 adapted to cooperate with ring 40 and be threaded onto body 2 such that ring 40 axially compresses curved end 15 of tube 10 against receiving surface 54 of receiver 50. In embodiments, connector assembly 1 may further include tube 10, 110, 210, one end of which may be folded back against the support surface of ring 40. When connector assembly 1 is in the mounted position, ring 40, nut 60, and at least an active portion of tube 10 may extend axially along the cavity of body 2 to which they are mounted.

[0014] 1 , the ring 40 can be mounted around the active portion of the tube 10, 110, 210 and adapted to receive the curved portion of the tube 10, 110, 210 at one of its axial ends. "Active portion of the tube" here means the portion of the tube 10, 110, 210 that forms part of the fluid transport circuit and is therefore adapted for the actual transport of fluid. The curved portion of the tube 10, 110, 210 can be designed to be axially compressed against a receiving surface to seal the system. According to the described embodiment, the receiving surface can be formed by an annular receiver 50 that is separate from the body 2 and can be attached thereon in a detachable manner. When the nut 60 is threaded onto the body 2, the curved end of the tube 10, 110, 210 can be axially compressed against the receiver 50 via the ring 40. When the curved portion of the tube 10, 110, 210 is clamped between the ring 40 and the receiver 50, a sealing joint is formed between the tube 10, 110, 210 and the receiver 50. The receiver 50 may be removable so that the receiving surface can be changed to fit different tube 10, 110, 210 diameters and thus the corresponding ring 40, while the body 2 can remain unchanged. The connector assembly according to the described embodiments may be modular according to the needs of the user, which may change during the life of the body in question. For example, if the body is a pump, the connector assembly according to the described embodiments connects tubes of different diameters to the pump without the need to modify the pump.

[0015] 1, the cavity 30, which communicates with the other cavities of the body 2, and in particular with the through cavities of the second and third branches 120, 220, includes at least one main portion 70 having a diameter D1 and an enlarged end portion 80 having a diameter D2 greater than D1 (see FIG. 2). The end portion 80 may be open outward at its rear end 80b and connected to the main portion by a shoulder 90 at its front end 80a. As shown in FIG. 3, the shoulder 90 here includes a first generally frustoconical portion 92 connected to the enlarged end portion 80 and a radially extending second portion 93 (perpendicular to the axis X1) connected to the main portion 70. Throughout the remainder of this disclosure, the terms "forward" and "rearward" are used with respect to the axial direction, and the installation of the ring 40 and nut 60 through the rear end of the through cavity 30 is performed forward (toward the body).

[0016] FIG. 2 is an exemplary cross-sectional view according to II of FIG. 1. FIG. 3 is a view of detail III of FIG. 2. As shown in FIGS. 2 and 3, the enlarged end 80 of the cavity may be provided with an internal thread 81 at its rear end 80b, the function of which will be described later. As best shown in FIG. 2, the ring 40 forms a tubular sleeve whose axis, in the mounted position, coincides with the axis X1 of the cavity 30 of the body 2. The ring 40 can surround the active portion 14 of the tube 10, which is cylindrical with an inner diameter D3 and an outer diameter D4 (see FIG. 2). To enable mounting to the tube 10, the ring 40 has an inner diameter D5 that is substantially equal to or slightly larger than the outer diameter D4 of the tube 10. The front end 40a of the ring 40, facing the body 2 in the mounted position, forms a support surface 41 adapted to receive the curved end 15 of the tube 10. In this embodiment, the front end 40a of the ring 40 faces the body 2 in the mounting position and forms a support surface 41 adapted to receive only the curved end 15 of the tube 10. In this embodiment (see in particular FIG. 3), the axial end 40a of the ring 40 may be rounded, and the support surface 41 has, in particular, a semicircular axial cross-section with a radius of curvature r1 equal to half the thickness e4 of the ring. According to a variant (not shown), the end 40a of the ring 40 may have any other suitable shape. For example, it may have an axial cross-section in the form of a tip with a rounded end, with a radius of curvature less than e4 / 2. In this embodiment, the end 15 of the tube 10 may be curved around the support surface 41, so that the axial end surface 15a of said curved portion 15 has a semicircular axial cross-section with a radius of curvature r2 equal to the radius of curvature r1 of the support surface 41 of the ring 40, plus the thickness of the tube 10.

[0017] 2 and 3, the nut 60 may be a separate part from the ring 40 and may be configured to fit around the ring 40 and provided with an external thread 61, in this case adapted to cooperate by threading with the internal thread 81 of the body 2. As shown, the nut 60 may not be in contact with the tube 10. More specifically, the nut 60 may be adapted to engage the ring 40 via the rear end 40b of the ring 40 opposite the support surface 41. It will be appreciated that the nut 60 may be engaged with the tube 10 before or simultaneously with the ring 40 during installation of the assembly 1.

[0018] As best shown in FIG. 2 , to allow the installation of the nut 60, the ring 40 has at least one mounting portion 42 extending from its rear end 40 b, which has an outer diameter D6 substantially equal to or smaller than the inner diameter D7 of the nut 60. At least one portion 43 of the portion 42 (in this embodiment, its entire length) has an outer diameter substantially equal to the inner diameter of the nut 60. At the same time, as described above, the nut 60 may be adapted to cooperate with the ring 40 to move the ring 40 together in the axial direction X. For this purpose, the ring 40 may be provided with abutment means with which the nut 60 may be adapted to axially cooperate to move the ring 40 together in the axial direction X. These abutment means include, in this embodiment, an annular, continuous circumferential rib 44 formed around the ring 40 near its front end 40 a, which carries the support surface 41. According to an embodiment, the rib 44 may be dimensioned to abut radially against the inner surface of the body 2 in the installation position, allowing the ring 40 to be pre-positioned before the nut is installed.

[0019] 2 and 3, a removable receiver 50 having an annular shape may be mounted inside the cavity 30 of the body 2. The receiver 50 may here be configured to cooperate positively with the body 2. To this end, as shown in FIG. 2, the receiver 50 comprises a cylindrical radially outer surface 51 of diameter D8 substantially identical to the diameter D2 of the enlarged end 80, which ensures radial blocking against the body 2. As shown in FIG. 3, the receiver 50 further comprises a front surface 52 directed towards the interior of the body 2 and shaped to at least partially abut against a shoulder 90.

[0020] As shown in FIGS. 2 and 3 , the seal between the receptacle 50 and the body 2 can be achieved here by cooperation between an annular rib 53 protruding from the front face 52 of the receptacle and a groove 91 formed in the surface of the second portion 93 of the shoulder 90. According to yet another embodiment, the receptacle 50 or the body 2 can be provided with at least one male element, and the other, either the receptacle or the body, can be provided with a female element adapted to cooperate with the male element by clamping to achieve a seal between the two parts. For example, as best shown in FIG. 2 , the receptacle 50 can be provided with the annular rib 53 and the body 2 can be provided with a groove 91, the rib 53 adapted to clamp radially and axially within the groove 91 to ensure a seal. According to another embodiment, the sealing means can include a seal, in particular an O-ring, that can be disposed between the receptacle 50 and the body 2. According to another embodiment, the cavity of the body 2 can include a main portion and an enlarged end portion opening outward. In this case, the body 2 can have a shoulder at the junction between the main portion and the end portion. In this case, the sealing means may provide a seal between the receiver 50 and said shoulder of the body 2. According to yet another embodiment, the receiver 50 may, if desired, be adapted to be mounted on the inside of the body 2 against a shoulder, in particular against the part of said shoulder that carries the sealing means. According to another particular embodiment, the body 2 and the receiver 50 may be configured to cooperate positively to radially lock the receiver relative to the body 2.

[0021] This sealing system at the same time makes it possible to avoid any radial deformation of the receiver 50, which may lead to the formation of retention zones that would impede the flow of fluid. Alternatively, the sealing between the receiver and the body may be achieved by any other suitable system, for example by a gasket partially compressed into at least one groove formed in one of the receiver and the body, and another part that can be compressed against the other of the receiver and the body.

[0022] 2 and 3 , as previously shown, the receiver 50 therefore abuts against a portion of the shoulder 90, more specifically against a second portion 93 of the shoulder, which includes the groove 91 and may directly face the shoulder zone of the receiving surface for receiving the curved portion of the tube. In this way, the body 2 and the receiver 50 may be configured to cooperate positively to radially lock the receiver to the body 2. The receiver 50 further includes a rear surface 54 oriented toward the open end of the cavity 30 that forms the receiving surface, onto which the curved end 15 of the tube 10 can be clamped under the influence of threading of the nut 60 on the body 2. The receiver 50 further includes a rear surface 54 oriented toward the open end of the cavity 30 that forms the receiving surface, onto which the curved end 15 of the tube 10 can be clamped when the nut 60 is threaded onto the body 2.

[0023] As best shown in Figure 3, receiving surface 54 may include an annular groove 55, specifically a groove having a curved axial cross-section configured to securely cooperate with compressed end 15 of tube 10. In the embodiment shown in Figure 3, groove 55 has at least one cross-section of a semicircle having a radius of curvature r2.

[0024] Finally, the receiver 50 includes an effective radially inner surface (hereinafter, the effective surface) 56 intended to form the junction between the active portion 14 of the tube 10 and the main portion 70 of the cavity 30. In other words, as shown in FIG. 3 , the rear end 56b of the effective surface 56 may be in contact with or flush with the inner surface of the active portion 15 of the tube 10, and the front end 56a of the effective surface 56 may be in contact with or flush with the inner surface of the main portion 70. It will be understood that the receiver 50 may define part of a fluid circulation circuit by its effective inner surface. In this case, the receiver 50 may preferably be shaped so that the junction between the main portion of the cavity and the active portion of the tube 10, 110, 210 may be gradual (without abrupt breaks) to avoid the creation of recesses and therefore retention areas that may obstruct the flow of fluid.

[0025] In an embodiment, the inner diameter D3 of the tube 10 and the diameter D1 of the main portion 70 of the cavity 30 of the body may be substantially identical. Thus, the effective surface 56 may be precisely aligned with the inner surface of the tube 10 and the inner surface of the cavity 30, and the three elements form a cylindrical conduit of constant diameter. If the inner diameter of the tube 10 and the diameter of the main portion of the cavity of the body 2 may be substantially identical, the effective inner surface of the receiver 50 may be cylindrical, with its diameter substantially equal to the inner diameter of the main portion. According to another embodiment, if the inner diameter of the tube 10 and the diameter of the main portion of the cavity of the body 2 may differ, the effective inner surface of the receiver 50 may extend over at least a portion of its axial length. For example, the effective inner surface may have a generally frustoconical shape in at least one axial portion.

[0026] To further improve the seal between the tube 10 and the receiver 50, the receiver 50 may have an annular groove, particularly a groove with a curved axial cross section, configured to cooperate securely with the compressed end of the tube 10. The secure fit between the receiver surface 50 and the curved portion of the tube 10 increases the contact area between the two parts and therefore reduces the risk of leakage.

[0027] 2 and 3, according to another embodiment, the nut 60 may be configured to be threaded into a cavity in the body 2. Such a configuration allows for a compact connector assembly. Furthermore, mechanical stresses in the nut may be reduced, and the applied force is aligned with the axial clamping force of the curved portion of the tube 10 on the receiver 50. According to another embodiment, the nut 60 may be integrally formed with the ring 40, or conversely, may be separate from the ring 40. In the latter case, the nut 60 may be adapted to cooperate with the ring 40 to drive the ring 40 axially together. According to another embodiment, the nut 60 may not be in contact with the tube 10, so that the tube 10 is not damaged when the nut 60 is threaded. According to another particular embodiment, the nut 60 may be configured to be attached around the ring 40, which may comprise abutment means with which the nut 60 may be adapted to cooperate to move the ring 40 axially together. Since the nut 60 is mounted around the ring 40, it is possible to use the same nut with rings 40 of different inner diameters to fit pipes 10 of different diameters. Thanks to these configurations, it may be possible to combine a single body 2 and a single nut 60 with several rings and possibly several different receivers in order to fit the system to pipes of different diameters. The abutment means may, for example, comprise a rib formed around the ring 40, in particular a rib extending around the entire circumference of the ring 40.

[0028] 2 and 3 , the nut 60 may include an annular nut body 61 oriented below the central axis X1. The annular nut body 61 may include an axial protrusion 65 and a radial protrusion 67 disposed axially adjacent to the axial protrusion 65. The axial protrusion 65 may include an engagement portion 62 and an end portion 64. The engagement portion 62 may include a threading portion, which may include an external threading portion or an internal threading portion. As shown in FIGS. 2 and 3 , the threading portion 62 may be an external threading portion. The threading portion 62 may be adapted to engage with a complementary engagement portion (e.g., threading) in the body 2. This engagement may secure and / or lock the nut 60 and the body 2 together. In some embodiments, the end portion 64 may provide a seal against an adjacent component (e.g., the body 2). The end portion 64 may have an arcuate cross-section. The end portion 64 may have an arcuate cross-section.

[0029] 2 and 3, the radial protrusion 67 may include a first flange 67A that protrudes radially inward. The radial protrusion 67 may have a second flange 67B that protrudes radially outward. In some embodiments, the first flange 67A can provide a seal against an adjacent component (e.g., the ring 40). As a result of the seal provided by at least one of the first flange 67A or the first end 64, the nut provides a leak rate of between 100 and 500 cc / min through the seal of at least one of the first flange 67A against the ring 40 or the end 64 against the body 3. The first flange 67A may have a linear cross-section. The first flange 67A may have an arcuate cross-section. The second flange 67B may have a linear cross-section. The second flange 67B may have an arcuate cross-section. Furthermore, as shown in FIG. 3, the first flange 67A of the nut 60 may include a bead 66 that provides a seal against the adjacent groove 46 of the ring 40. Alternatively, a bead may be placed on the ring 40 and a groove may be placed on the nut 60. As a result, there may be multiple sealing positions within the connector assembly 1. The first may be radial tightening of the annular rib 53 of the receiver 50 into the groove 91 of the body 2. The second may be axial tightening by sandwiching the tube 10 between the ring 40 and the receiver 50. The third may be radial tightening of the nut 60 relative to the body 2. The fourth may be axial tightening of the nut 60 relative to the ring 40.

[0030] 2 and 3 , in some embodiments, the second flange 67B may include radially disposed, axially oriented tabs 68 adapted to lock the nut against an adjacent component (e.g., body 2). The axially oriented tabs 68 may have a straight cross-section. The axially oriented tabs 68 may have an arcuate cross-section. In some embodiments, the axially oriented tabs 68 may include a bridge portion 68A and a head portion 68B. The structure and dimensions of the nut 60 may be described in further detail below.

[0031] As will be explained below, the connector assembly 1 according to the described embodiment allows tubes of different diameters to be connected to the same cavity 30 of the body 2. To do this, it is sufficient to adapt the receiver 50 and the ring 40 to the diameter of the tubes to be connected. In the example of FIG. 1, the cylindrical cavity 130 of the second branch 120 of the body 2 has the same structure and dimensions as the above-mentioned cavity 30. However, the tube 110 connected to this second cavity has a smaller diameter than the diameter of the tube 10. In particular, the inner diameter D3' of the tube 110 may be smaller than the inner diameter D1 of the main part of the cavity 130.

[0032] Figure 4 is an exemplary cross-sectional view according to IV of Figure 1. In other words, Figure 4 shows in more detail the connection of the tubes 110 according to some embodiments. Figure 5 is a view of detail V of Figure 4. In these figures, elements identical or similar to those described in relation to Figures 2 and 3 are designated by the same reference numerals incremented by 100 and will not be described again thereafter.

[0033] As shown in FIG. 4 , the ring 140 may be mounted around the active portion 114 of the tube 110. Its inner diameter may be substantially equal to or slightly larger than the outer diameter of the tube 110. As in the previous embodiment, a nut 160 identical to the nut 60 described above may be adapted to be mounted on the mounting portion 142 of the ring 140. To save material on the one hand in the ring and limit friction between the ring 140 and the nut 160 on the other hand, only a portion 143 of the mounting portion 142 has an outer diameter substantially equal to the inner diameter of the nut, allowing the nut 160 to rest thereon. Similarly, as in the previous example, the receiver 150 has an active inner surface 156 intended to form the interface between the active portion 114 of the tube 110 and the main portion 170 of the cavity 130.

[0034] In this example, the difference in diameter between the tube 110 and the main portion 170 of the cavity 130 causes the active surface 156 to widen over at least a portion of its axial length, particularly towards the front. In other words, the active surface 156 has a distance c from its rear end 156 b or a point between said rear end 156 b and its front end 156 a to the axis X that increases towards its front end 156 a.

[0035] 4 and 5, more specifically, the active surface 156 includes a first cylindrical portion 157 extending from a rear end 156b connected to the inner surface of the tube 110, and a second flared, generally frusto-conical portion 158 located directly in the extension of the first portion 157. According to other variations, the active surface 156 may include a flared portion of a different shape, for example, the active surface 156 may include a flared portion with a curved profile. It should be noted that if the diameter of the connected tube is larger than the diameter of the main portion of the cavity, contrary to what has been described above, the receiver may also be configured so that its active inner surface widens towards the rear.

[0036] Figure 6 is an exemplary cross-sectional view according to II of Figure 1. In this figure, elements identical or similar to those described in relation to Figures 2 and 3 are designated by the same reference numerals and will not be described again thereafter.

[0037] As shown in FIG. 6, alternative configurations of the ring 40 can provide improved performance in certain situations. For example, FIG. 6 illustrates the interface between the ring 40 and the curved end 15 of the tube 10. The ring 40 may have a beveled or chamfered surface 45 at the interface with the curved end 15 of the tube 10. As a result, the ring 40 may only partially contact the curved end 15 of the tube 10, such that the ring 40 does not contact the curved end 15 of the tube 10 at the interface over the entire surface of the curved end 15. This feature may provide a better seal while reducing damage to the tube 10, which may result in improved sealing performance of the connector assembly and enhanced durability of the tube 10. While FIG. 6 illustrates the ring 40, this design may also be used for the ring 140 of FIGS. 4 and 5. Thus, the connector assembly described above allows for the connection of tubes of different diameters over the same sized through cavity by simply changing the receiver and the ring around which the tube is rotated, and the nut can be retained for use with these different tubes.

[0038] FIG. 7 is a perspective view of another exemplary connector assembly for tubing according to one embodiment. In this view, elements identical or similar to those described in connection with FIGS. 2 and 3 are designated by the same reference numerals incremented by 700 and will not be described again thereafter. FIG. 7 shows a cross-section of the connector assembly (including the nut) along a central axis X1. As shown in FIG. 7, a body 702 may connect with a receiver 750 and be held in place by a nut 760 below the central axis X1. The nut 760 may include an annular nut body 761 oriented below the central axis X1. The annular nut body 761 may include an axial protrusion 765 and a radial protrusion 767 disposed axially adjacent to the axial protrusion 765. The axial protrusion 765 may include an engagement portion 762 and an end portion 764. The engagement portion 762 may include a threaded portion, which may include an external threaded portion or an internal threaded portion. As shown in FIG. 7, the threaded portion 762 may be an external threaded portion. The threaded portion 762 may be adapted to engage a complementary engaging portion (e.g., threads) in the body 702. This engagement may secure and / or lock the nut 760 and the body 702 together. In some embodiments, the end 764 may provide a seal against an adjacent component (e.g., the body 702). The end 764 may have an arcuate cross-section.

[0039] 7, the radial protrusion 767 may include a first flange 767A that protrudes radially inward. The radial protrusion 767 may have a second flange 767B that protrudes radially outward. In some embodiments, the first flange 767A may provide a seal against an adjacent component (e.g., the receiver 750). As a result of the seal provided by at least one of the first flange 767A or the first end 764, the nut provides a leak rate of between 100 and 500 cc / min through the seal of at least one of the first flange 767A against the receiver 750 or the end 764 against the body 702. The first flange 767A may have a straight cross-section. The first flange 767A may have an arcuate cross-section. The second flange 767B may have a straight cross-section. The second flange 767B may have an arcuate cross-section. In some embodiments, the first flange 767A has a width W FF and the second flange 767B may have a width W SF、 where W SF >W FF , for example W SF >1.5W FF、 For example, W SF >2W FF、 For example, W SF >3W FF、 Or for example W SF >5W FF In some embodiments, as described below, the second flange 767B has a width W that varies around the circumference of the annular nut body 761. SF can have:

[0040] In some embodiments, the receiver 750 can include a first engagement portion 751 adapted to seal the body 702 to the receiver 750. In some embodiments, the receiver 750 can include a second engagement portion 769 adapted to seal the nut 760 to the receiver 750. In some embodiments, the receiver 750 can include a third engagement portion 753 adapted to seal against a component adjacent to the receiver 750. The configuration of the third engagement portion 753 can be varied as follows:

[0041] In some embodiments, the second flange 767B may include axially oriented tabs 768 that are radially disposed and adapted to lock the nut against an adjacent component (e.g., the body 702). The axially oriented tabs 768 may have a straight cross-section. The axially oriented tabs 768 may have an arcuate cross-section. The axially oriented tabs have a length L AOT and the axial protrusion may have a length L APP where L APP >L AOT , for example, L APP >1.5L AOT、 For example, L APP >2L AOT、 For example, L APP >3L AOT、 Or for example L APP >5L AOT, In some embodiments, the axially oriented tabs 768 can include a bridge portion 768A and a head portion 768B. In some embodiments, the bridge portion 768A has a width W BP and head portion 768B has a width W HP where W HP >W BP , for example W HP >1.5W BP、 For example, W HP >2W BP、 For example, W HP >3W BP、 Or for example W HP >5W BP The annular structure of the nut 760 will be described in further detail below.

[0042] FIG. 8 is a side view of a nut for an exemplary connector assembly for tubing, according to some embodiments. In this view, elements identical or similar to those described in connection with FIGS. 2-7 are designated by the same reference numerals incremented by 800 and will not be described again thereafter. The nut 860 may include an annular nut body 861 oriented below a central axis X1. The annular nut body 861 may include at least one circumferential division 885 defining a first circumferential portion 861A and a second circumferential portion 861B. In some embodiments, the circumferential division may be parallel to the central axis X1. In some embodiments, the circumferential division may be diagonal along the central axis X1. In some embodiments, the circumferential division may be zigzag-shaped along the central axis X1. In some embodiments, the first circumferential portion 861A and the second circumferential portion 861B may be flexibly connected by a flexible bridge portion 861C. The bridge portion 861C may allow for flexing of the first circumferential portion 861A relative to the second circumferential portion 861B, or vice versa. In embodiments, the bridge portion 861C may allow for elastic bending of the first circumferential portion 861A relative to the second circumferential portion 861B, or vice versa. Alternatively, the bridge portion 861C may be replaced by a second divider separating the first circumferential portion 861A and the second circumferential portion 861B.

[0043] 8, the first circumferential portion 861A can include a first circumferential end 861A1, and the second circumferential portion 861B can include a second circumferential end 861B1 that defines the circumferential divider 885. In some embodiments, the first circumferential end 861A1 and the second circumferential end 861B1 can each include a coupling component 863A, 863B adapted to secure the first circumferential end 861A1 and the second circumferential end 861B1 together. The coupling components 863A, 863B may include at least one of a nut, bolt, bearing, batten, buckle, clip, flange, frog, grommet, hook and eye, latch, peg, nail, rivet, tongue and groove, screw anchor, snap fastener, stitch, thread fastener, tie, toggle bolt, wedge anchor, screw, bolt, clamp, clasp, clip, latch, pin, rivet, tie, nail, or another type. The circumferential split 885 (together with the bridge portion 861C) allows the nut 860 to be easily coupled onto the connector assemblies described herein. Furthermore, the circumferential split 885 allows the nut 860 to be retrofitted onto existing connector assemblies having tubes of different diameters and sizes while maintaining the connector assembly's seal.

[0044] 9A-9G illustrate side views of nuts in an exemplary connector assembly for tubing, according to some embodiments. FIG. 9A shows a fuse bond connection between a nut 760 and a receiver 750. FIG. 9B shows a male cap connection between the nut 760 and a receiver 750. FIG. 9C shows a female flare connection between the nut 760 and a receiver 750. FIG. 9D shows a male NPT connection between the nut 760 and a receiver 750. FIG. 9E shows a male flare connection between the nut 760 and a receiver 750. FIG. 9F shows a third-party connection between the nut 760 and a receiver 750. FIG. 9G shows an additional insert connection 779 between the nut 760 and a receiver 750. As shown in FIGS. 9A-9G, the third engagement portion 753 may have a variable shape for desired applications. It is contemplated herein that a split nut 760 may be required when the diameter of the third engagement portion 753 is larger than the inner diameter of the nut 760 .

[0045] According to one embodiment, the body 2 and / or the receiving part 50, and / or the tube 10, 110, 210, and / or the ring 40, and / or the nut 60 may be made of a plastic material. According to one embodiment, at least one of these elements is made of, for example, a fluoropolymer. According to another embodiment, each of these elements is, for example, a fluoropolymer. In the context of the described embodiment, the term "fluoropolymer" refers to any polymer containing a vinyl group capable of polymerizing or propagating a polymerization reaction and having in its chain at least one monomer selected from compounds containing at least one fluorine atom, one fluoroalkyl group, or one fluoroalkoxy group directly bonded to the vinyl group. An example of the monomer may be vinyl fluoride. Vinylidene fluoride (VF2); trifluoroethylene (VF3); chlorotrifluoroethylene (CTFE); 1,2-difluoroethylene; tetrafluoroethylene (TFE); hexafluoropropylene (HFP); perfluoro(alkyl vinyl) ethers such as perfluoro(methyl vinyl) ether (PMVE), perfluoro(ethyl vinyl) ether (PEVE), and perfluoro(propyl vinyl) ether (PPVE); perfluoro(1,3-dioxole); perfluoro(2,2-dimethyl-1,3-dioxole) (PDD); products of the formula CF2 = CFOCF2CF(CF3)OCF2CF2X (wherein X is SO2F, CO2H, CH2OH, CH2OCN, or CHOPO3H); products of the formula CF2 = CFOCF2CF2SO2F; products of the formula F(CF2) n products of formula CH2OCF=CF2, where n is 1, 2, 3, 4, or 5; products of formula R1CH2OCF=CF2, where R1 is hydrogen or CF2) z and z is 1, 2, 3 or 4; products of formula R3OCF=CH2, where R3 is F(CF2) zProducts in which z is 1, 2, 3, or 4; perfluorobutylethylene (PFBE), 3,3,3-trifluoropropene; 2-trifluoromethyl-3,3,3-trifluoro-1-propene. The fluoropolymer may be a homopolymer or copolymer. It may also contain a non-fluorinated monomer, such as ethylene. In particular, the fluorinated polymer may be selected from fluorinated ethylene-propylene (FEP), ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), polytetrafluoroethylene polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), or a combination thereof. Fluoropolymers allow for the avoidance of possible contamination, which may be advantageous for high-purity applications. Fluoropolymers also have the advantage of being resistant to chemicals, especially acids such as sulfuric acid (H2SO4), hydrofluoric acid (HF), or phosphoric acid (H3PO4), which are used in the manufacture of semiconductors. It should be noted that the nut 60 and ring 40 may also be made from a fluoropolymer, although they are not intended to be in direct contact with the fluid.

[0046] According to one embodiment, the receiving portion 50 may be made from one or a combination of materials selected from polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), and polytetrafluoroethylene (PTFE).

[0047] According to another embodiment, the ring 40 may be made from one of the materials selected from polyvinylidene fluoride (PVDF), ethylene tetrafluoroethylene (ETFE), ethylene chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), or combinations thereof.

[0048] According to another embodiment, the nut 60 may be made from ethylene tetrafluoroethylene (ETFE) or polyvinylidene fluoride (PVDF), or a combination thereof.

[0049] According to another embodiment, the body 2 may be made from polytetrafluoroethylene perfluoropropylvinylether (PFA) or polytetrafluoroethylene (PTFE), or a combination thereof.

[0050] According to another embodiment, the tubes 10, 110, 210 may be made from, for example, polytetrafluoroethylene perfluoro-propyl vinyl ether (PFA), fluorinated ethylene-propylene (FEP), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), ethylene tetrafluoroethylene (ETFE), or polyvinylidene fluoride (PVDF), or combinations thereof.

[0051] According to one embodiment, the receiving portion 50 may be made from one or a combination of materials selected from polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), and polytetrafluoroethylene (PTFE).

[0052] According to another embodiment, the ring 40 may be made from one of the materials selected from polyvinylidene fluoride (PVDF), ethylene tetrafluoroethylene (ETFE), ethylene chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene (PTFE), or combinations thereof.

[0053] According to another embodiment, the nut 60 may be made from ethylene tetrafluoroethylene (ETFE) or polyvinylidene fluoride (PVDF), or a combination thereof.

[0054] According to another embodiment, the body 2 may be made from polytetrafluoroethylene perfluoropropylvinylether (PFA) or polytetrafluoroethylene (PTFE), or a combination thereof.

[0055] Thus, according to a particular embodiment, the receiver 50 may be made from a material that is more flexible than the body 2, the rigidity of which must be sufficient to ensure good resistance of its connection by threading with the nut 60. The receiver 50 may also be made from a material that is more flexible than the ring 40 (in other words, the receiver 50 may be made from a material that has a smaller Young's modulus than the material forming the ring 40), to ensure a better punching effect during tightening and therefore a better seal.

[0056] The connector assembly, according to one embodiment, can be adapted for use in circuits for transporting toxic and / or corrosive fluids, particularly in circuits of the type that can be used in the semiconductor industry, where sealing requirements are very stringent. Liquid chemicals used in the manufacture of semiconductors are, for example, solvents such as trichloroethylene, acetone, etc. for cleaning or degreasing operations, as well as acids and / or bases such as sulfuric acid, nitric acid, hydrochloric acid, etc., used to carry out semiconductor attack or for surface preparation and regeneration.

[0057] In particular, the use of the nut 60, 160, 760, 860 may provide simplification of the coupling assembly 1, 701 by eliminating components and increasing ease of assembly. Additionally, the use of the nut 60, 160, 760, 860 may provide noise reduction and vibration isolation within the coupling assembly 1, 701 by improving the required assembly force, compensating for axial tolerances, correcting misalignment between adjacent components, and preventing undesired movement between adjacent components. Furthermore, the nut 60, 160, 760, 860 may be simple to install, retrofittable, reusable, and cost-effective across several possible assemblies of varying complexity, since the circumferential split 885 (along with the bridge portion 861C) can allow the nut 860 to be easily coupled to the connector assemblies described herein, while providing the ability to retrofit existing connector assemblies 1, 701 with tubes of different diameters and sizes and maintain a seal on the connector assembly. Finally, the use of nuts 60,160,760 may reduce the leak rate, thereby increasing the lifespan of the coupling assembly 1,701.

[0058] Many different aspects and embodiments are possible. Some of these aspects and embodiments are described below. After reading this specification, those skilled in the art will understand that these aspects and embodiments are merely illustrative and do not limit the scope of the invention. An embodiment may follow any one or more of the embodiments listed below.

[0059] Embodiment 1. A nut for a connector assembly for a pipe, comprising: an annular nut body comprising a polymer and oriented below a central axis, the annular nut body comprising a circumferential split defining a first circumferential portion and a second circumferential portion, the first circumferential portion and the second circumferential portion being flexibly connected by a flexible bridge portion, the first circumferential portion comprising a first circumferential end and the second circumferential portion comprising a second circumferential end, the first circumferential end and the second circumferential end each comprising a coupling component adapted to secure the first circumferential end and the second circumferential end together.

[0060] Embodiment 2. A nut for a pipe connector assembly having an annular nut body oriented below a central axis, wherein the annular nut body having a cross section along the central axis includes an axial protrusion having an external threaded portion and an end portion, and a radial protrusion disposed axially adjacent to the axial protrusion, wherein the radial protrusion includes a first flange protruding radially inward, and at least one of the first flange or the end portion is adapted to seal against an adjacent component, and the annular nut body further includes a circumferential split portion.

[0061] Embodiment 3. A connector assembly comprising: a body having an axially extending cavity; a ring adapted to be mounted around an active portion of a tube, the ring having a support surface at one end adapted to receive the curved end of the tube; a nut adapted to be threaded onto the body so as to engage the ring and axially press the curved end of the tube against the receiving surface; and an annular receiver forming the receiving surface and removably mounted to the body, wherein the nut comprises an annular nut body oriented below a central axis, the annular nut body having a cross section along the central axis and including an axial protrusion including an outer threaded portion and an end, and a radial protrusion disposed axially adjacent to the axial protrusion, wherein at least one of: 1) the radial protrusion comprises a first flange protruding radially inward, and at least one of the first flange or the end is adapted to seal against the receiver, or 2) the annular nut body comprises a polymer and further comprises a circumferential split.

[0062] Embodiment 4. A connector assembly comprising: a body having an axially extending cavity; an annular receiving portion forming a receiving surface and removably attached to the body; and a nut adapted to be threaded onto the body so as to engage with the annular receiving portion and axially press the tube against the receiving surface, wherein the nut comprises an annular nut body oriented below a central axis, the annular nut body having a cross section along the central axis and comprising an axial protrusion including an outer threaded portion and an end, and a radial protrusion arranged axially adjacent to the axial protrusion, wherein at least one of: 1) the radial protrusion comprises a first flange protruding radially inward, and at least one of the first flange or the end is adapted to seal against the receiving portion, or 2) the annular nut body comprises a polymer and further comprises a circumferential split portion.

[0063] Embodiment 5. A nut or connector assembly according to any one of embodiments 2 to 4, wherein the axial protrusion comprises a second flange protruding radially outward, the second flange comprising an axially oriented tab disposed radially and adapted to lock the nut against an adjacent component.

[0064] Embodiment 6. A nut or connector assembly as described in embodiment 5, wherein the axially oriented tabs have a straight cross section.

[0065] Embodiment 7. Axially oriented tabs having a length L AOT and the axial protrusion has a length L APP、を有し、 L APP >L AOT , for example, L APP >1.5L AOT、 For example, L APP >2L AOT、 For example, L APP >3L AOT、 Or for example L APP >5L AOT 6. A nut or connector assembly according to embodiment 5, wherein:

[0066] Embodiment 8. A nut or connector assembly as described in embodiment 5, wherein the axially oriented tab comprises a bridge portion and a head portion.

[0067] Embodiment 9. The bridge part has a width W BP The head portion has a width W HPであり , HP >W BP , for example, W HP >1.5W BP、 For example, W HP >2W BP、 For example, W HP >3W BP、 Or for example W HP >5W BP 9. A nut or connector assembly according to embodiment 8, wherein:

[0068] Embodiment 10. The second flange has a width W that varies around the circumference of the annular nut body. SF 6. The nut or connector assembly of embodiment 5, having:

[0069] Embodiment 11. The first flange has a width W FF and the second flange has a width W SFを有し、 W SF >W FF , for example, W SF >1.5W FF、 For example, W SF >2W FF、 For example, W SF >3W FF、 Or for example W SF >5W FF 6. A nut or connector assembly according to embodiment 5, wherein:

[0070] Embodiment 12. A nut or connector assembly according to any one of embodiments 2 to 4, wherein the first flange has an arcuate cross section.

[0071] Embodiment 13. A nut or connector assembly according to any one of embodiments 2 to 4, wherein the annular nut body has a flexible bridge portion that flexibly connects the first circumferential portion and the second circumferential portion.

[0072] Embodiment 14. A nut or connector assembly described in any one of embodiments 1 to 4, wherein the nut comprises a polymer including at least one of polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), polytetrafluoroethylene (PTFE), fluorinated ethylene-propylene (FEP), ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), polytetrafluoroethylene polyvinylidene fluoride (PVDF), ethylene chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), or a combination thereof.

[0073] Embodiment 15. The nut of embodiment 1, wherein the coupling component of at least one of the first circumferential end and the second circumferential end includes at least one of a nut, bolt, bearing, batten, buckle, clip, flange, frog, grommet, hook and eye, latch, peg, nail, rivet, tongue and groove, screw anchor, snap fastener, stitch, screw fastener, tie, toggle bolt, wedge anchor, screw, bolt, clamp, clasp, clip, latch, pin, rivet, tie, or nail.

[0074] Embodiment 16. A connector assembly described in any one of embodiments 3 to 4, wherein a seal is present between the main body and the receiving portion.

[0075] Embodiment 17. A connector assembly as described in embodiment 16, wherein the seal includes a male element and a female element.

[0076] Embodiment 18. A connector assembly described in any one of embodiments 3 to 4, wherein the cavity of the body has a main portion and an enlarged end portion opening outward, the body has a shoulder portion at the joint between the main portion and the end portion, and the receiving portion is mounted within the body against the shoulder portion.

[0077] Embodiment 19. A connector assembly as described in embodiment 18, wherein the receiving portion has an effective inner surface configured to connect the main portion of the cavity and the effective portion of the tube.

[0078] Embodiment 20. A connector assembly as described in embodiment 18, wherein the effective inner surface of the receiving portion is cylindrical with a diameter substantially equal to the inner diameter of the main portion.

[0079] Embodiment 21. A connector assembly as described in embodiment 18, wherein the effective inner surface of the receiving portion is frustoconical.

[0080] Embodiment 22: A connector assembly according to any one of embodiments 3 to 4, wherein the main body and the receiving portion radially engage with the main body.

[0081] Embodiment 23. A connector assembly as described in embodiment 3, wherein the nut is attached around the ring.

[0082] Embodiment 24. A connector assembly as described in embodiment 3, wherein the ring has a rib.

[0083] Embodiment 25. A connector assembly described in any one of embodiments 3 to 4, wherein the nut is configured to be threaded into the cavity of the main body.

[0084] Embodiment 26. A connector assembly as described in embodiment 3, wherein the receiving portion has an annular groove.

[0085] Embodiment 27. A connector assembly as described in embodiment 3, wherein the tube has an end that is curved relative to the support surface of the ring.

[0086] Embodiment 28. A connector assembly as described in embodiment 27, wherein the support surface of the ring contacts only a portion of the end of the tube.

[0087] Embodiment 29. A connector assembly as described in embodiment 28, wherein the support surface of the ring includes an inclined surface.

[0088] Embodiment 30. A connector assembly described in any one of embodiments 3 to 4, wherein the main body is a pump, a valve, a manifold, a fitting, or a stopper.

[0089] Embodiment 31. A connector assembly described in any one of embodiments 3 to 4, wherein the nut provides a leakage rate of between 100 and 500 cc / min through sealing of at least one of the first flange or end to the receiving portion.

[0090] Embodiment 32. A connector assembly as described in embodiment 3, wherein the circumferential division is parallel to the central axis.

[0091] Embodiment 33. A connector assembly as described in embodiment 3, wherein the circumferential division is slanted along the central axis.

[0092] Embodiment 34. A connector assembly as described in embodiment 3, wherein the circumferential division portion is zigzag shaped along the central axis.

[0093] It should be noted that not all of the above features are required, that some of the specific features may not be required, and that one or more features may be provided in addition to the features described. Still further, the order in which the features are listed is not necessarily the order in which they are introduced.

[0094] Certain features that are, for clarity, described herein in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features that are, for brevity, described in the context of a single embodiment, may also be provided separately or in any subcombination.

[0095] Benefits, other advantages, and solutions to problems have been described above with respect to particular embodiments. However, the benefits, advantages, solutions to problems, and any feature(s) that may bring about or make more pronounced any benefit, advantage, or solution should not be construed as a critical, necessary, or essential feature of any or all of the claims.

[0096] The specification and illustrations of the embodiments described herein are intended to provide a general understanding of the structure of various embodiments. The specification and illustrations are not intended to serve as an exhaustive and comprehensive description of all elements and features of apparatus and systems that use the structures or methods described herein. Separate embodiments may be provided in combination in a single embodiment, and conversely, various features that are described for brevity in the context of a single embodiment may be provided separately or in any subcombination. Furthermore, references to values described in ranges include each and every value within that range. Many other embodiments may become apparent to those skilled in the art only after reading this specification. Other embodiments may be utilized and derived from the present disclosure, such that structural substitutions, logical substitutions, or any changes may be made without departing from the scope of the present disclosure. Accordingly, the present disclosure should be considered illustrative, and not restrictive.

Claims

1. A nut for a connector assembly for a pipe, comprising: An annular nut body comprising a polymer and oriented along a central axis, the annular nut body comprising:

1. A nut for a connector assembly for pipes, comprising: an annular nut body comprising a circumferential split defining a first circumferential portion and a second circumferential portion, the first circumferential portion and the second circumferential portion being flexibly connected by a flexible bridge portion, the first circumferential portion having a first circumferential end, the second circumferential portion having a second circumferential end, the first circumferential end and the second circumferential end each comprising a coupling component adapted to secure the first circumferential end and the second circumferential end together.

2. A nut for a connector assembly for a pipe, comprising: an annular nut body oriented below a central axis, the annular nut body having a cross section along the central axis, the annular nut body comprising: an axial projection having an external thread and an end; a radial protrusion disposed axially adjacent to the axial protrusion, the radial protrusion comprising a first flange protruding radially inward, at least one of the first flange or the end portion adapted to seal against an adjacent component, and the annular nut body further comprising a circumferential split portion.

3. 1. A connector assembly for tubing, comprising: a body having an axially extending cavity; a ring adapted to be fitted around an active portion of the tube, the ring comprising: a support surface at one end adapted to receive the curved end of the tube; a nut adapted to be threadedly engaged with the body to engage the ring and to press the curved end of the tube against the axial receiving surface; and an annular receiving portion defining the receiving surface and removably attached to the body, the nut comprising: an annular nut body oriented below a central axis and having a cross section taken along the central axis, the annular nut body comprising:

1. A connector assembly for a pipe, comprising: an axial protrusion having an external threaded portion and an end; and a radial protrusion disposed axially adjacent to the axial protrusion, wherein at least one of: 1) the radial protrusion has a first flange protruding radially inward, and at least one of the first flange or the end is adapted to seal against a receiver; or 2) the annular nut body comprises a polymer and further comprises a circumferential split portion.

4. 3. The nut of claim 2, wherein the axial protrusion comprises a second flange projecting radially outward, the second flange comprising radially disposed, axially oriented tabs adapted to lock the nut against an adjacent component.

5. The nut of claim 4 wherein said axially oriented tabs have a straight cross section.

6. The nut of claim 4 , wherein the axially oriented tab comprises a bridge portion and a head portion.

7. The nut of claim 2 , wherein the annular nut body includes a flexible bridge portion flexibly connecting the first circumferential portion and the second circumferential portion.

8. The connector assembly of claim 3 wherein a seal is present between the body and the receptacle.

9. 4. The connector assembly of claim 3, wherein the cavity of the body includes a main portion and an enlarged end portion opening outward, the body includes a shoulder at the junction between the main portion and the end portion, and the receiving portion is mounted inside the body against the shoulder.

10. 10. The connector assembly of claim 9, wherein the effective inner surface of the receptacle is cylindrical having a diameter substantially equal to the inner diameter of the main portion.

11. 10. The connector assembly of claim 9, wherein said effective inner surface of said receiver is frustoconical.

12. The connector assembly of claim 3 , wherein the body and the receiver radially lock the receiver to the body.

13. The connector assembly of claim 3 , wherein the nut is attached around the ring.

14. The connector assembly of claim 3 , wherein the receptacle includes an annular groove.

15. 4. The connector assembly of claim 3, wherein the tube has an end that is curved relative to the support surface of the ring.

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