Nut for pipe connector assembly

Abstract

The present invention relates to a nut for a connector assembly of pipes, the nut comprising: an annular nut body comprising a polymer and oriented along a central axis, the annular nut body comprising: a circumferential breach defining a first circumferential portion and a second circumferential portion, wherein the first circumferential portion and the second circumferential portion are flexibly connected by a flexible bridge portion wherein the first circumferential portion comprises a first circumferential end and the second circumferential portion comprises a second circumferential end, wherein the first circumferential end portion and the second circumferential end portion each comprise a coupling member adapted to secure the first circumferential end portion and the second circumferential end portion together.

Description

Technical Field

[0001] The present disclosure relates to a nut for a tube 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.), the tube fitting coupling assembly being suitable for but not limited to use in corrosive and / or high purity fluid delivery circuits. Background Art

[0002] In the field of corrosive fluid delivery, coupling assemblies are known for connecting a tube to a main body of another component. Typically, these coupling assemblies include a ring portion that is mounted on the periphery of the tube and receives a curved end portion of the tube at one end, and wherein sealing is achieved by clamping the curved end portion of the tube axially against a receiving surface via the ring. In some embodiments, the ring is covered by a nut for further accommodating the tube; however, the nut is sometimes insufficient in terms of sealing, size, and interchangeability. Therefore, there is still a need for improved coupling assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0003] The present disclosure will be fully understood and its advantages will be more clearly appreciated from the following detailed description of the embodiments shown by way of non-limiting examples. This description refers to the accompanying drawings, in which:

[0004] Figure 1 is a perspective view of an example connector assembly for a tube according to various embodiments;

[0005] Figure 2 is based on Figure 1 Example cross section of II;

[0006] Figure 3 yes Figure 2 A view of the details of III;

[0007] Figure 4 is based on Figure 1 Example cross section of IV;

[0008] Figure 5 yes Figure 4 A detailed view of the V;

[0009] Figure 6 is based on Figure 1 Example cross section of II;

[0010] Figure 7 is a cross-sectional view of another example connector assembly for a tube according to various embodiments;

[0011] Figure 8 is a side view of a nut of an example connector assembly for a tube according to various embodiments;

[0012] Fig. 9A is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments;

[0013] Fig. 9B is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments;

[0014] Fig. 9C is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments;

[0015] Fig.9D is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments;

[0016] Fig.9E is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments;

[0017] Fig.9F is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments; and

[0018] Figure 9G is a cross-sectional view of a nut within an example connector assembly for a tube according to various embodiments. DETAILED DESCRIPTION

[0019] The following description in conjunction with the accompanying drawings is provided to help understand the teachings disclosed herein. The following discussion will focus on the specific implementation and implementation scheme of the teachings. This focus is provided to help describe the teachings and should not be interpreted as limiting the scope or applicability of the teachings. However, based on the teachings disclosed in this application, other embodiments may be used.

[0020] The terms "comprises," "including," "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 inherent to such method, article, or apparatus. In addition, unless expressly stated to the contrary, "or" refers to an inclusive or, not an exclusive or. For example, a condition A or B is satisfied by any of: 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).

[0021] In addition, "a" or "an" is used to describe the elements and components described herein. This is done only for convenience and to give a general sense of the scope of the invention. The description should be understood to include one, at least one, or the singular, as well as the plural, or vice versa, unless it is clearly indicated that it is otherwise meant. For example, when a single embodiment is described herein, more than one embodiment can be used in place of the single embodiment. Similarly, where more than one embodiment is described herein, a single embodiment can replace the more than one embodiment.

[0022] 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 the invention belongs. The materials, methods, and examples are illustrative only and are not intended to be limiting. To the extent not described herein, many details regarding specific materials and processing actions are conventional and can be found in textbooks and other sources in the field of tube connector assemblies.

[0023] The embodiments described herein as a whole relate to 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: a circumferential split defining a first circumferential portion and a second circumferential portion, wherein the first circumferential portion and the second circumferential portion are flexibly connected by a flexible bridge portion, wherein the first circumferential portion includes a first circumferential end, and the second circumferential portion includes a second circumferential end, wherein the first circumferential end and the second circumferential end each include a connecting component suitable for fixing the first circumferential end and the second circumferential end together.

[0024] The embodiments described herein as a whole relate to a nut for a connector assembly for a pipe, comprising: an annular nut body oriented along a central axis, the annular nut body having a cross-section taken along the central axis, the annular nut body comprising: an axial protrusion comprising an external thread and an end portion; and a radial protrusion disposed axially adjacent to the axial protrusion, wherein the radial protrusion comprises a first flange protruding radially inwardly, wherein at least one of the first flange or the end portion is adapted to seal against an adjacent component, and wherein the annular nut body also comprises a circumferential split.

[0025] The embodiments described herein are generally directed to a connector assembly for a tube, comprising: a body provided with a cavity extending in an axial direction; a ring adapted to be mounted at the periphery of a useful portion of the tube and having a support surface at one end adapted to receive a curved end portion of the tube; and a nut adapted to be threaded onto the body so as to engage the ring to press the curved end portion of the tube against the receiving surface in an axial direction; and an annular receiving portion forming the receiving surface and removably mounted on the body, wherein the nut comprises: an annular nut body oriented along a central axis, the annular nut body having a cross-section taken along the central axis, the annular nut body comprising: an axial protrusion comprising an external thread and an end portion; a radial protrusion arranged to be axially adjacent to the axial protrusion, wherein at least one of the following is satisfied: 1) the radial protrusion comprises a first flange protruding radially inwardly, wherein at least one of the first flange or the end portion is adapted to be sealed against the receiving portion, or 2) wherein the annular nut body comprises a polymer and also comprises a circumferential slit.

[0026] The embodiments described herein as a whole relate to a connector assembly for a tube, comprising: a body provided with a cavity extending in an axial direction; an annular receiving portion forming a receiving surface and removably mounted on the body; and a nut adapted to be threaded onto the body so as to engage the annular receiving portion to press the tube against the receiving surface in an axial direction, wherein the nut comprises: an annular nut body oriented along a central axis, the annular nut body having a cross-section taken along the central axis, the annular nut body comprising: an axial protrusion comprising an external thread and an end portion; a radial protrusion arranged to be axially adjacent to the axial protrusion, wherein at least one of the following is satisfied: 1) the radial protrusion comprises a first flange protruding radially inwardly, wherein at least one of the first flange or the end portion is adapted to be sealed against the receiving portion, or 2) wherein the annular nut body comprises a polymer and also comprises a circumferential slit.

[0027] Figure 1 A connector assembly 1 according to an embodiment is shown. Figure 1As shown, a connector assembly 1 according to certain embodiments can be used to connect one or more tubes 10, 110, 210 to another component of the same fluid delivery circuit, and the connector assembly may include a body 2. The term "fluid delivery circuit" is understood here to mean a group of connecting conduits that can be traversed by a fluid. In multiple embodiments, the body 2 can be, for example, a pump, a valve, a fitting, a plug, a manifold, a coupler (particularly a T-shaped, I-shaped, L-shaped or U-shaped coupler) or a plug. The connector assembly 1 can be used to connect to the body 2, thereby forming a T-shaped connection with the three branches 20, 120, 220 of the three tubes 10, 110, 210. The body 2 may be provided with a through cavity extending in an axial direction. Then, the adjective "axial" and the adverb "axially" are used with reference to the direction of the axis of the cavity in question. With reference to the same cavity, the radial direction is defined as a direction orthogonal to the axis of the cavity and passing through the axis. The body 2 may include at least one through cavity, and the tubes 10, 110, 210 can be connected to the through cavity. The at least one through-going lumen may be formed by a single integral part or by several parts suitably fastened together.At least a portion of the lumen may form part of a fluid conveying circuit in the extension of the tube.

[0028] Still reference Figure 1 , at the first branch 20, the connector assembly 1 comprises: a body portion defining a through cylindrical cavity 30 having a central axis X1; a ring 40 adapted to be mounted at the periphery of the useful portion of the tube 10 and provided at one of its ends with a support surface 41 adapted to receive the curved end portion of the tube 15; an annular receiving portion 50 removably mounted in the cavity 30 of the body 2 and defining a receiving surface 54 for the curved end portion 15 of the tube 10; and a nut 60 adapted to cooperate with the ring 40 and to be screwed onto the body 2 so as to compress the curved end portion 15 of the tube 10 against the receiving surface 54 of the receiving portion 50 in the axial direction by means of the ring 40. In an embodiment, the connector assembly may also comprise a tube 10, 110, 210, one end portion of which may be bent back against the supporting surface of the ring 40. When the connector assembly 1 is in the mounted position, the ring 40, the nut 60 and at least the useful portion of the tube 10 may extend in the axial direction of the cavity of the body 2 on which they are mounted.

[0029] Still reference Figure 1, the ring 40 may be adapted to be mounted at the periphery of the useful part of the tube 10, 110, 210 and to receive the curved part of the tube 10, 110, 210 at one of its axial ends. "Useful part of the tube" here means a part of the tube 10, 110, 210 that forms a fluid delivery circuit and is therefore adapted to the actual delivery of the fluid. The curved part of the tube 10, 110, 210 may be designed to be compressed axially against the receiving surface in order to seal the system. According to the described embodiment, the receiving surface may be formed by an annular receiving portion 50, which is different from the main body 2 and is removably mounted on the main body. When the nut 60 is screwed onto the main body 2, the curved end portion of the tube 10, 110, 210 can therefore be compressed against the receiving portion 50 in the axial direction via the ring 40. Once the curved part of the tube 10, 110, 210 is clamped between the ring 40 and the receiving portion 50, a sealed joint is formed between the tube 10, 110, 210 and the receiving portion 50. Since the receiving portion 50 can be removable, the receiving surface can be changed to adapt to the diameter of different tubes 10, 110, 210 and thus to the corresponding ring 40, the body 2 can remain unchanged. According to the described embodiment, the connector assembly can be modular according to the needs of the user, which can be changed during the life of the body in question. For example, if the body is a pump, the connector assembly according to the described embodiment connects tubes of different diameters to the pump without having to modify the pump.

[0030] Still reference Figure 1 The cavity 30 (which communicates with other cavities of the body 2 and in particular with the through cavities of the second branch 120 and the third branch 220) comprises at least one main section 70 having a diameter D1 and a widened end section 80 having a diameter D2 greater than D1 (see Figure 2 ). The end section 80 is open outward at its rear end 80b and can be connected to the main section at its front end 80a by a shoulder 90. Figure 3 As illustrated, the shoulder 90 here comprises a first generally frustoconical portion 92 connected to the enlarged end section 80 and a second portion 93 extending radially (orthogonal to the axis X1) connected to the main section 70. Throughout the rest of the disclosure, the terms "front" and "rear" will be used with reference to the axial direction, the mounting of the ring 40 and of the nut 60 through the rear end of the through cavity 30 being carried out towards the front (towards the body).

[0031] Figure 2 is based on Figure 1 Example cross section of II. Figure 3 yes Figure 2 A view of the details of III. Figure 2 and Figure 3As shown, the widened end section 80 of the cavity may be provided with an internal thread 81 at its rear end 80b, the function of which will be described in detail below. Figure 2 As best illustrated in FIG. 4 , the ring 40 forms a tubular sleeve whose axis coincides, in the mounted position, with the axis X1 of the cavity 30 of the body 2. The ring 40 can surround the useful portion 14 of the tube where the tube 10 is cylindrical with an inner diameter D3 and an outer diameter D4 (see FIG. Figure 2 ). In order to enable the ring 40 to be mounted on the tube 10, the ring has an inner diameter D5 that is substantially equal to or slightly greater than the outer diameter D4 of the tube 10. The front end 40a of the ring 40, which is directed toward the body 2 in the mounted position, forms a support surface 41 suitable for receiving the curved end portion 15 of the tube 10. In an embodiment, the front end 40a of the ring 40, which is directed toward the body 2 in the mounted position, forms a support surface 41 suitable for receiving only the curved end portion 15 of the tube 10. In this embodiment (see in particular Figure 3 ), the axial end 40a of the ring 40 may be circular, the support surface 41 having an axial semicircular 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. This end may, for example, have an axial section in the form of a point with a circular end, the radius of which is less than e4 / 2. In an embodiment, the end portion 15 of the tube 10 may be bent around the support surface 41, so that the axial end surface 15a of the bent 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, the thickness of the tube 10 increases.

[0032] Still reference Figure 2 and Figure 3 , the nut 60 may be a separate part from the ring 40, which is configured to be mounted at the periphery of the ring 40 and is provided with a thread 61, in this case an external thread, suitable for cooperating by screwing with the internal thread 81 of the body 2. As illustrated in the figure, the nut 60 may not be in contact with the tube 10. More specifically, the nut 60 may be suitable for engaging on the ring 40 through the rear end 40b of the ring 40 opposite the support surface 41. It should be understood that during the installation of the assembly 1, the nut 60 may be engaged on the tube 10 before the ring 40 or simultaneously with the ring.

[0033] like Figure 2As best shown in FIG. 4 , in order to enable the mounting of the nut 60, the ring 40 has at least one mounting section 42 extending from the rear end 40b, having an outer diameter D6 substantially equal to or less than the inner diameter D7 of the nut 6. At least one portion 43 of said section 42 (in this embodiment, the entire length) has an outer diameter substantially equal to the inner diameter of the nut 60. At the same time, and as indicated above, the nut 60 may be adapted to cooperate with the ring 40 so as to displace the ring as a whole in the axial direction X. For this purpose, the ring 40 may be provided with abutment members with which the nut 60 may be adapted to axially cooperate so as to displace the ring 40 as a whole in the axial direction. In this embodiment, these abutment members comprise annular and continuous circumferential ribs 44 formed at the periphery of the ring 40, in the vicinity of the front end 40a of the bearing support surface 41 of said ring 40. According to an embodiment, the ribs 44 may be dimensioned so as to bear radially against the inner surface of the body 2 in the mounted position, thereby enabling pre-positioning of the ring before mounting the nut.

[0034] Still reference Figure 2 and Figure 3 , a removable receiving portion 50 having an annular shape can be mounted inside the cavity 30 of the main body 2. The receiving portion 50 can be configured to cooperate positively with the main body 2. For this purpose, and as Figure 2 As illustrated, the receiving portion 50 comprises a cylindrical radially outer surface 51 having a diameter D8 substantially identical to the diameter D2 of the widened end section 80, which ensures blocking of the receiving portion relative to the body 2 in the radial direction. Figure 3 As shown, the receiving portion 50 also comprises a front surface 52 facing the inside of the body 2 and shaped so as to bear at least partially on the shoulder 90 .

[0035] like Figure 2 and Figure 3 As shown, the seal between the receiving part 50 and the main body 2 can be achieved here by the cooperation of the annular rib 53 protruding from the front surface 52 of the receiving part and the groove 91 formed in the surface of the second part 93 of the shoulder 90. According to yet another embodiment, the receiving part 50 or the main body 2 can be provided with at least one male element and another male element, and the receiving part or the main body can be provided with a female element, which is suitable for cooperating with the male element by clamping to achieve the seal between the two parts. For example, as Figure 2As best shown in , the receiving portion 50 may be provided with an annular rib 53, and the main body 2 may be provided with a groove 91, the rib 53 being adapted to be clamped radially and axially in the groove 91 to ensure sealing. According to another embodiment, the sealing member may include a seal, in particular an O-ring, which may be placed between the receiving portion 50 and the main body 2. According to another embodiment, the cavity of the main body 2 may include a main section and a widened end section opening outward. The main body 2 may then have a shoulder between the main section and the end section. In this case, the sealing member may provide a seal between the receiving portion 50 and the shoulder of the main body 2. According to yet another embodiment, the receiving portion 50 may be adapted to be mounted inside the main body 2 to bear against the shoulder, in particular on the portion of the shoulder that carries the sealing member. According to another specific embodiment, the main body 2 and the receiving portion 50 may be configured to cooperate positively so as to lock the receiving portion relative to the main body 2 in a radial direction.

[0036] This sealing system also allows avoiding any radial deformation of the receiving portion 50 which could lead to the formation of stagnation zones that could interfere with the flow of the fluid. Alternatively, the seal between the receiving portion and the body can be achieved by any other suitable system, for example, by a gasket compressed in at least one groove formed in one of the receiving portion and the body and another portion compressible against the other of the receiving portion and the body.

[0037] Still reference Figure 2 and Figure 3 As indicated previously, the receiving portion 50 thus bears against a portion of the shoulder 90, and more specifically against a second portion 93 of the shoulder, which second portion comprises the groove 91 and which can also be directly opposite the shoulder zone of the receiving surface for receiving the curved portion of the tube. In this way, the body 2 and the receiving portion 50 can be configured to cooperate positively so as to lock the receiving portion relative to the body 2 in the radial direction. The receiving portion 50 also comprises a rear surface 54 forming a receiving surface directed toward the open end of the cavity 30, on which the curved end portion 15 of the tube 10 can be clamped under the action of the nut 60 being screwed on the body 2. The receiving portion 50 also comprises a rear surface 54 forming a receiving surface directed toward the open end of the cavity 30, on which the curved end portion 15 of the tube 10 can be clamped when the nut 60 is screwed on the body 2.

[0038] like Figure 3 As best illustrated in FIG. 5 , the receiving surface 54 may include an annular groove 55, in particular a groove having a curved axial cross section, configured to positively cooperate with the compression end portion 15 of the tube 10. Figure 3 In the illustrated embodiment, the groove 55 has at least one section that is in the form of a semicircle having a radius of curvature r2.

[0039] Finally, the receiving portion 50 comprises a useful radial inner surface (hereinafter useful surface) 56 intended to form a junction between the useful portion 14 of the tube 10 and the main section 70 of the cavity 30. In other words, Figure 3 As illustrated, the rear end 56b of the useful surface may be in contact with or flush with the inner surface of the useful portion 15 of the tube 10, and the front end 56a of the useful surface 56 may be in contact with or flush with the inner surface of the main section 70. It should be understood that the receiving portion 50 may then define a portion of the fluid circulation loop with its useful inner surface. In this case, the receiving portion 50 may preferably be shaped so that the junction between the main section of the cavity and the useful portion of the tube 10, 110, 210 may be gradual (without a sudden break) in order to avoid the formation of a recess and thus a stagnant area that may disrupt the flow of the fluid.

[0040] In an embodiment, the inner diameter D3 of the tube 10 and the diameter D1 of the main section 70 of the cavity 30 of the body may be substantially the same. Thus, the useful 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 with a constant diameter. In the case where the inner diameter of the tube 10 and the diameter of the main section of the cavity of the body 2 may be substantially the same, the effective inner surface of the receiving portion 50 may be cylindrical, and its diameter may be substantially equal to the inner diameter of the main section. According to another embodiment, when the inner diameter of the tube 10 and the diameter of the main section of the cavity of the body 2 may be different, the effective inner surface of the receiving portion 50 may be extended over at least a portion of the axial length of the receiving portion. For example, the effective inner surface may have a generally truncated conical shape over at least one axial section.

[0041] In order to further improve the seal between the tube 10 and the receiving portion 50, the receiving portion may have an annular groove, in particular a groove with a curved axial cross section, which is configured to cooperate positively with the compressed end portion of the tube 10. The positive fit between the receiving surface 50 and the curved portion of the tube 10 increases the contact area between the two parts, thus reducing the risk of leakage.

[0042] Still reference Figure 2 and Figure 3According to another embodiment, the nut 60 may be configured to be threaded inside the cavity of the body 2. This configuration allows the compactness of the connector assembly to be increased. In addition, the mechanical stress in the nut can be reduced, and the applied force is consistent with the axial clamping force of the curved portion of the pipe 10 on the receiving portion 50. According to another embodiment, the nut 60 may be formed integrally with the ring 40, or conversely, the nut may be different from the ring 40. In the latter case, the nut 60 may be adapted to cooperate with the ring 40 so as to drive the ring as a whole in the axial direction. According to another embodiment, the nut 60 may not contact the pipe 10. Therefore, when the nut 60 is threaded, the pipe 10 may not be damaged. According to another specific embodiment, the nut 60 may be configured to be installed on the periphery of the ring 40, and the ring 40 may be provided with an abutment member, and the nut 60 may be adapted to cooperate with the abutment member so as to displace the ring 40 as a whole in the axial direction. In the case where the nut 60 is installed on the periphery of the ring 40, the same nut can be used with rings 40 of different inner diameters adapted to pipes 10 of different diameters. Due to these arrangements, several rings and possibly several different receiving portions can be combined with a single body 2 and a single nut 60 in order to adapt the system to pipes of different diameters. The abutment member can comprise, for example, ribs formed at the periphery of the ring 40, in particular ribs extending over the entire circumference of the ring 40.

[0043] Still refer to Figure 2 and Figure 3 The nut 60 may include an annular nut body 61 oriented along the central axis X1. The annular nut body 61 may include an axial protrusion 65 and a radial protrusion 67, which is arranged 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 thread, which may include an external thread or an internal thread. Figure 2 and Figure 3 As shown, the threads 62 can be external threads. The threads 62 can be adapted to engage with a complementary engagement portion (e.g., threads) in the body 2. Such engagement can secure and / or lock the nut 60 and the body 2 together. In various embodiments, the end portion 64 can provide a seal against an adjacent component (e.g., the body 2). The end portion 64 can have an arcuate cross-section. The end portion 64 can have an arcuate cross-section.

[0044] Still reference Figure 2 and Figure 3, the radial protrusion 67 may include a first flange 67A protruding radially inward. The radial protrusion 67 may include a second flange 67B protruding radially outward. In multiple embodiments, the first flange 67A can provide a seal against an adjacent component (e.g., the ring 40). Due to the seal provided by at least one of the first flange 67A or the first end portion 64, the nut provides a leakage rate of between 100cc / min and 500cc / min via the first flange 67A to seal against at least one of the ring 40 or the end portion 64 to the body 3. The first flange 67A may have a straight cross-section. The first flange 67A may have an arcuate cross-section. The second flange 67B may have a straight cross-section. The second flange 67B may have an arcuate cross-section. In addition, as Figure 3 As shown, 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, the bead may be located on the ring 40 and the groove may be located on the nut 60. Thus, there may be multiple sealing positions within the connector assembly 1. The first sealing position may axially tighten the annular rib 53 of the receiving portion 50 into the groove 91 of the body 2. The second sealing position may be axially tightened by clamping the tube 10 between the ring 40 and the receiving portion 50. The third sealing position may radially tighten the nut 60 on the body 2. The fourth sealing position may axially tighten the nut 60 on the ring 40.

[0045] Still reference Figure 2 and Figure 3 In various embodiments, the second flange 67B may include an axially oriented tab 68 that is radially disposed and adapted to lock the nut against an adjacent component (e.g., the body 2). The axially oriented tab 68 may have a straight cross-section. The axially oriented tab 68 may have an arcuate cross-section. In various embodiments, the axially oriented tab 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.

[0046] As will be explained below, the connector assembly 1 according to the described embodiment allows pipes of different diameters to be connected to the same cavity 30 of the body 2. To do this, it is only necessary to adapt the receiving portion 50 and the ring 40 to the diameter of the pipe to be connected. Figure 1 In the example of the embodiment of the present invention, the cylindrical cavity 130 of the second branch 120 of the body 2 has the same structure and size as the above-mentioned cavity 30. However, the diameter of the tube 110 connected to the second cavity is smaller 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 section of the cavity 130.

[0047] Figure 4 is based on Figure 1 Example cross section of IV. In other words, Figure 4The connection of the tube 110 according to various embodiments is illustrated in more detail. Figure 5 yes Figure 4 In these figures, combined with the Figure 2 and Figure 3 Elements which are identical or similar to those described are designated by the same reference numerals incremented by 100 and are not described again below.

[0048] like Figure 4 As shown, a ring 140 can be mounted at the periphery of the useful portion 114 of the tube 110. The inner diameter of this ring can be substantially equal to or slightly greater than the outer diameter of the tube 110. As in the previous embodiment, a nut 160 identical to the above-described nut 60 can be adapted to be mounted on the mounting section 142 of the ring 140. In order to save material of the ring on the one hand, and to limit the friction between the ring 140 and the nut 160 on the other hand, only a portion 143 of said mounting section 142 has an outer diameter substantially equal to the inner diameter of the nut, so that the nut 160 can bear on this portion. Likewise, as in the previous example, the receiving portion 150 has a useful inner surface 156, which is intended to form a joint between the useful portion 114 of the tube 110 and the main section 170 of the cavity 130.

[0049] In this example, the useful surface 156 expands over at least a portion of its axial length, in particular towards the front, due to the difference in diameter between the tube 110 and the main section 170 of the cavity 130. In other words, the useful surface 156 has a spacing c from the axis X that increases from its rear end 156b or a point between said rear end 156b and its front end 156a towards its front end 156a.

[0050] exist Figure 4 and Figure 5 In the example of , more specifically, the useful surface 156 comprises a first cylindrical portion 157 connected to the inner surface of the tube 110 extending from its rear end 156b, and a second portion 158 located directly in the extension of the expanded shape of the first portion 157, the expanded shape being generally truncated conical. According to other variants, the useful surface 156 may also include an expanded portion of different shapes, for example, the useful surface 156 may include an expanded portion with a curved profile. It should be noted that if, unlike in the previous description, the diameter of the tube to be connected is greater than the diameter of the main section of the cavity, the receiving portion may also be configured so that the useful inner surface of the receiving portion expands toward the rear.

[0051] Figure 6 is based on Figure 1 Example cross section of II. In this figure, combined with Figure 2 and Figure 3Elements that are the same or similar to those described are designated by the same reference numerals and are not described again below.

[0052] like Figure 6 As shown, alternative configurations of the ring (40) may provide improved performance in certain circumstances. For example, Figure 6 The interface of the ring (40) and the curved end portion (15) of the tube (10) is shown. The ring (40) may have a beveled or chamfered surface (45) at the interface with the curved end portion (15) of the tube (10). Thus, the ring (40) may only partially contact the curved end portion (15) of the tube (10) at the interface, so that the ring (40) may not contact the curved end portion (15) of the tube (10) over the entire surface of the curved end portion (15) of the tube (10). 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). Although Figure 6 Ring (40) is shown, but the design can also be used for Figure 4 and Figure 5 Thus, the connector assembly described above allows for the connection of different diameter tubes on the same size through-lumen by simply changing the receiving portion and the ring on which the tube turns, while the nut can be retained for use with these different tubes.

[0053] Figure 7 is a perspective view of another example connector assembly for a tube according to one embodiment. Figure 2 and Figure 3 Elements that are identical or similar to those described are referred to by the same reference numerals incremented by 700 and are not described again below. Figure 7 exemplifies a cross section of the connector assembly (including the nut) taken along the central axis X1. Figure 7 As shown, the body 702 can be connected to the receiving portion 750 and held in place by a nut 760 along the central axis X1. The nut 760 may include an annular nut body 761 oriented along the central axis X1. The annular nut body 761 may include an axial protrusion 765 and a radial protrusion 767, which is arranged 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 threads, which may include external threads or internal threads. As shown in FIG. Figure 7As shown, the threads 762 can be external threads. The threads 762 can be adapted to engage with a complementary engagement portion (e.g., threads) within the body 702. This engagement can secure and / or lock the nut 760 and the body 702 together. In various embodiments, the end portion 764 can provide a seal against an adjacent component (e.g., the body 702). The end portion 764 can have an arcuate cross-section.

[0054] Still reference Figure 7 , the radially protruding portion 767 may include a first flange 767A protruding radially inward. The radially protruding portion 767 may include a second flange 767B protruding radially outward. In multiple embodiments, the first flange 767A may provide a seal against an adjacent component (e.g., the receiving portion 750). Due to the seal provided by at least one of the first flange 767A or the first end portion 764, the nut provides a leakage rate between 100cc / min and 500cc / min for sealing against at least one of the receiving portion 750 or the end portion 764 against the body 702 via the first flange 767A. 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 multiple embodiments, the first flange 767A may have a width W FF , and the second flange 767B may have a width W SF , and where W SF >W FF , such as W SF >1.5W FF , such as W SF >2W FF , such as W SF >3W FF , or such as W SF >5W FF In various embodiments, as described below, the second flange 767B may have a width W that varies around the circumference of the annular nut body 761. SF .

[0055] In various embodiments, the receiving portion 750 can include a first engagement portion 751 adapted to seal the body 702 to the receiving portion 750. In various embodiments, the receiving portion 750 can include a second engagement portion 769 adapted to seal the nut 760 to the receiving portion 750. In various embodiments, the receiving portion 750 can include a third engagement portion 753 adapted to seal against an adjacent component to the receiving portion 750. There are variable configurations of the third engagement portion 753, as exemplified below.

[0056] In various embodiments, the second flange 767B may include an axially oriented tab 768 that is radially disposed and adapted to lock the nut against an adjacent component (e.g., the body 702). The axially oriented tab 768 may have a straight cross-section. The axially oriented tab 768 may have an arcuate cross-section. The axially oriented tab may have a length L AOT , and the axial protrusion has a length L APP , where L APP >L AOT , such as L APP >1.5L AOT , such as L APP >2L AOT , such as L APP >3L AOT , or such as L APP >5L AOT。 In various embodiments, the axially oriented tab 768 may include a bridge portion 768A and a head portion 768B. In various embodiments, the bridge portion 768A has a width W BP , and the head portion 768B has a width W HP , where W HP >W BP , such as W HP >1.5W BP , such as W HP >2W BP , such as W HP >3W BP , or such as W HP >5W BP The annular structure of the nut 760 may be described in further detail below.

[0057] Figure 8 is a side view of a nut of an example connector assembly for a tube according to various embodiments. Figures 2 to 7Elements identical or similar to those described are referred to by the same reference numerals incremented by 800, and are not described again in the afternoon. Nut 860 may include an annular nut body 861 oriented along the central axis X1. The annular nut body 861 may include at least one circumferential split 885, which defines a first circumferential portion 861A and a second circumferential portion 861B. In multiple embodiments, the circumferential split may be parallel to the central axis X1. In multiple embodiments, the circumferential split may be diagonal along the central axis X1. In multiple embodiments, the circumferential split may be serrated along the central axis X1. In multiple 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 the first circumferential portion 861A to bend relative to the second circumferential portion 861B, or vice versa. In an embodiment, the bridge portion 861C can allow elastic bending of the first circumferential portion 861A relative to the second circumferential portion 861B, or vice versa. Alternatively, the bridge portion 861C can be replaced by a second split that separates the first circumferential portion 861A and the second circumferential portion 861B.

[0058] Still refer to Figure 8 , the first circumferential portion 861A may include a first circumferential end 861A1, and the second circumferential portion 861B may include a second circumferential end 861B1, the first circumferential end and the second circumferential end defining a circumferential split 885. In various embodiments, the first circumferential end 861A1 and the second circumferential end 861B1 may each include a coupling member 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 at least one of the following: a nut, a bolt, a bearing, a brace, a buckle, a clip, a flange, a fork, a grommet, an eye, a latch, a peg, a nail, a rivet, a mortise, a ground anchor screw, a snap fastener, a suture, a threaded fastener, a tie wire, a toggle bolt, a wedge anchor, a screw, a bolt, a clamp, a buckle, a latch, a pin, a rivet, a tie wire, a nail, or may be another type. The circumferential split 885 (together with the bridge portion 861C) allows the nut 860 to be easily coupled over the connector assembly described herein. In addition, the circumferential split 885 allows the nut 860 to be retrofitted over existing connector assemblies having pipes of different diameters and sizes while maintaining the seal of the connector assembly.

[0059] FIG. 9A to FIG. 9G Illustrated is a side view of a nut within an example connector assembly for a tube according to various embodiments. Fig. 9A A fusebond connection between the nut 760 and the receiving portion 750 is illustrated. Fig. 9BA male cap connection between the nut 760 and the receiving portion 750 is illustrated. Fig. 9C A female flared connection between the nut 760 and the receiving portion 750 is illustrated. Fig.9D A male NPT connection between the nut 760 and the receiving portion 750 is illustrated. Fig.9E A male flared connection between the nut 760 and the receiving portion 750 is illustrated. Fig.9F A third party connection between the nut 760 and the receiving portion 750 is illustrated. Figure 9G An additional insert connection 779 between the nut 760 and the receiving portion 750 is illustrated. FIG. 9A to FIG. 9G As shown, the third engagement portion 753 may have a variable shape for a desired application. It is contemplated herein that when the diameter of the third engagement portion 753 is greater than the inner diameter of the nut 760, it may be necessary to halve the nut 760.

[0060] 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 can 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 embodiments, the term "fluoropolymer" refers to any polymer having at least one monomer in its chain, the at least one monomer being selected from compounds containing a vinyl group capable of polymerization or growth or polymerization, the vinyl group containing at least one fluorine atom, a fluoroalkyl group or a fluoroalkoxy group directly attached to the vinyl group. By way of example of monomers, the following may be mentioned: 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); a fluorocarbon of the formula CF 2 =CFOCF 2 CF(CF 3 )OCF 2 CF 2 The product of X, where X is SO 2 F.CO 2 H, CH 2 OH, CH 2 OCN or CH 2 OPO 3 H; Formula CF 2 =CFOCF 2 CF2 SO 2 The product of formula F(CF 2 ) n CH 2 OCF=CF 2 wherein n is 1, 2, 3, 4 or 5; Formula R 1 CH 2 OCF=CF 2 The product of R 1 is hydrogen or F(CF 2 ) z and z is 1, 2, 3 or 4; Formula R 3 OCF=CH 2 The product of R 3 is F(CF 2 ) z - and z is 1, 2, 3 or 4; perfluorobutylethylene (PFBE); 3,3,3-trifluoropropylene; 2-trifluoromethyl-3,3,3-trifluoro-1-propylene. The fluoropolymer may be a homopolymer or a copolymer; it may also include non-fluorinated monomers such as ethylene. In particular, the fluorinated polymer may be selected from fluorinated ethylene-propylene (FEP), ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene perfluoro-propyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), polytetrafluoroethylene polyvinylidene fluoride (PVDF), ethylene trifluorochloroethylene (ECTFE), polytrifluorochloroethylene (PCTFE), or a combination thereof. Fluoropolymers allow the possibility of contamination to be avoided, which may be advantageous for high purity applications. Fluoropolymers also have the advantage of being resistant to chemicals, particularly acids, such as (H 2 SO 4 ), hydrofluoric acid (HF) or phosphoric acid (H 3 PO 4 ). It should be noted that nut 60 and ring 40 may also be made of fluoropolymers, although fluoropolymers are not intended to be in direct contact with fluids.

[0061] According to one embodiment, the receiving portion 50 may be made of one material selected from the group consisting of polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), and polytetrafluoroethylene (PTFE), or a combination thereof.

[0062] According to another embodiment, the ring 40 may be made of a material selected from the group consisting of polyvinylidene fluoride (PVDF), ethylene tetrafluoroethylene (ETFE), ethylene chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), or a combination thereof.

[0063] According to another embodiment, the nut 60 may be made of ethylene tetrafluoroethylene (ETFE) or polyvinylidene fluoride (PVDF) or a combination thereof.

[0064] According to another embodiment, the body 2 may be made of polytetrafluoroethylene perfluoro-propyl vinyl ether (PFA) or polytetrafluoroethylene (PTFE) or a combination thereof.

[0065] According to another embodiment, the tube 10, 110, 210 can be made of, 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 a combination thereof.

[0066] According to one embodiment, the receiving portion 50 may be made of one material selected from the group consisting of polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene-perfluoromethyl vinyl ether (MFA), and polytetrafluoroethylene (PTFE), or a combination thereof.

[0067] According to another embodiment, the ring 40 may be made of a material selected from polyvinylidene fluoride (PVDF), ethylene tetrafluoroethylene (ETFE), ethylene chlorotrifluoroethylene (ECTFE), polychlorotrifluoroethylene (PCTFE), polytetrafluoroethylene perfluoropropyl vinyl ether (PFA), polytetrafluoroethylene (PTFE), or a combination thereof.

[0068] According to another embodiment, the nut 60 may be made of ethylene tetrafluoroethylene (ETFE) or polyvinylidene fluoride (PVDF) or a combination thereof.

[0069] According to another embodiment, the body 2 may be made of polytetrafluoroethylene perfluoro-propyl vinyl ether (PFA) or polytetrafluoroethylene (PTFE) or a combination thereof.

[0070] According to a particular embodiment, the receiving portion 50 can therefore be made of a more flexible material than the body 2, the rigidity of which must be sufficient to ensure good resistance by being screwed with the nut 60. The receiving portion 50 can also be made of a more flexible material than the ring 40 (in other words, the receiving portion 50 can be made of a material whose Young's modulus is less than that of the material forming the ring 40), thus ensuring a better stamping action and therefore a better seal during tightening.

[0071] According to one embodiment, the connector assembly can be adapted for use in a circuit conveying toxic and / or corrosive fluids, in particular fluids of the type that can be used in the semiconductor industry where sealing requirements are very stringent. Liquid chemicals used in semiconductor manufacturing are, for example, solvents for cleaning or degreasing operations, such as trichloroethylene, acetone, etc., and acids and / or bases for semiconductor etching or performing surface preparation and regeneration, such as sulfuric acid, nitric acid, hydrochloric acid, etc.

[0072] It is noteworthy that the use of nuts 60, 160, 760, 860 can provide simplification of the coupling assembly 1, 701 by eliminating parts and increasing the simplicity of the assembly. In addition, the use of nuts 60, 160, 760, 860 can improve the required assembly force, compensate for axial tolerances and correct misalignment between adjacent parts, and provide noise reduction and vibration decoupling in the coupling assembly 1, 701 by preventing undesired movement between adjacent parts. In addition, nuts 60, 160, 760, 860 are simple to install and can be retrofitted in several possible assemblies of different complexity, reusable and cost-effective, because the circumferential crack 885 (together with the bridge portion 861C) can allow the nut 860 to be easily coupled to the connector assembly described herein, while providing the ability to retrofit and maintain the sealing of the connector assembly above the existing connector assembly 1, 701 with pipes of different diameters and sizes. Finally, the use of nuts 60, 160, 760 can reduce the leakage rate, thereby increasing the life of the coupling assembly 1, 701.

[0073] Many different aspects and embodiments are possible. Some of those aspects and embodiments are described below. After reading this specification, the technician will understand that those aspects and embodiments are only exemplary and do not limit the scope of the present invention. Exemplary embodiments can be according to any one or more embodiments in the embodiments listed below.

[0074] Embodiment 1. A nut for a connector assembly for a tube, comprising: an annular nut body, the annular nut body comprising a polymer and oriented along a central axis, the annular nut body comprising: a circumferential split, the circumferential split defining a first circumferential portion and a second circumferential portion, wherein the first circumferential portion and the second circumferential portion are flexibly connected by a flexible bridge portion, wherein the first circumferential portion includes a first circumferential end, and the second circumferential portion includes a second circumferential end, wherein the first circumferential end and the second circumferential end each include a connecting component suitable for fixing the first circumferential end and the second circumferential end together.

[0075] Embodiment 2. A nut for a connector assembly for a tube, comprising: an annular nut body oriented along a central axis, the annular nut body having a cross-section taken along the central axis, the annular nut body comprising: an axial protrusion, the axial protrusion comprising an external thread and an end portion; and a radial protrusion, the radial protrusion being arranged to be axially adjacent to the axial protrusion, wherein the radial protrusion comprises a first flange protruding radially inward, wherein at least one of the first flange or the end portion is suitable for sealing against an adjacent component, and wherein the annular nut body also comprises a circumferential split.

[0076] Embodiment 3. A connector assembly for a tube, comprising: a body, the body being provided with a cavity extending in an axial direction; a ring, the ring being suitable for being installed at the periphery of a useful portion of the tube and having a support surface at one end suitable for receiving a curved end portion of the tube; and a nut, the nut being suitable for being threaded onto the body so as to engage the ring to press the curved end portion of the tube against the receiving surface in the axial direction; and an annular receiving portion, the annular receiving portion forming the receiving surface and being removably installed on the body, wherein the nut comprises: an annular nut body oriented along a central axis, the annular nut body having a cross-section taken along the central axis, the annular nut body comprising: an axial protrusion, the axial protrusion comprising an external thread and an end portion; and a radial protrusion, the radial protrusion being arranged to be axially adjacent to the axial protrusion, wherein at least one of the following items is satisfied: 1) the radial protrusion comprises a first flange protruding radially inwardly, wherein at least one of the first flange or the end portion is suitable for sealing against the receiving portion, or 2) wherein the annular nut body comprises a polymer and also comprises a circumferential slit.

[0077] Embodiment 4. A connector assembly for a tube, comprising: a body, the body being provided with a cavity extending in an axial direction; an annular receiving portion, the annular receiving portion forming a receiving surface and being removably mounted on the body; and a nut, the nut being suitable for being threaded onto the body so as to engage the annular receiving portion to press the tube against the receiving surface in the axial direction, wherein the nut comprises: an annular nut body oriented along a central axis, the annular nut body having a cross-section taken along the central axis, the annular nut body comprising: an axial protrusion, the axial protrusion comprising an external thread and an end portion; and a radial protrusion, the radial protrusion being arranged to be axially adjacent to the axial protrusion, wherein at least one of the following items is satisfied: 1) the radial protrusion comprises a first flange protruding radially inwardly, wherein at least one of the first flange or the end portion is suitable for sealing against the receiving portion, or 2) wherein the annular nut body comprises a polymer and also comprises a circumferential slit.

[0078] Embodiment 5. A nut or connector assembly according to any one of Embodiments 2 to 4, wherein the axially protruding portion includes a second flange protruding radially outward, wherein the second flange includes an axially directed tab, which is radially arranged and suitable for locking the nut against an adjacent component.

[0079] Embodiment 6. A nut or connector assembly according to embodiment 5, wherein the axially oriented tab has a straight cross-section.

[0080] Embodiment 7. A nut or connector assembly according to embodiment 5, wherein the axially oriented tab has a length L AOT , and the axial protrusion has a length L APP , and where L APP >L AOT , such as L APP >1.5L AOT , such as L APP >2L AOT , such as L APP >3L AOT , or such as L APP >5L AOT .

[0081] Embodiment 8. The nut or connector assembly of Embodiment 5, wherein the axially-oriented tab comprises a bridge portion and a head portion.

[0082] Embodiment 9. A nut or connector assembly according to embodiment 8, wherein the bridge portion has a width W BP , and the head portion has a width WHP , and where W HP >W BP , such as W HP >1.5W BP , such as W HP >2W BP , such as W HP >3W BP , or such as W HP >5W BP .

[0083] Embodiment 10. A nut or connector assembly according to embodiment 5, wherein the second flange has a width W that varies around the circumference of the annular nut body. SF .

[0084] Embodiment 11. A nut or connector assembly according to embodiment 5, wherein the first flange has a width W FF , and the second flange has a width W SF , and where W SF >W FF , such as W SF >1.5W FF , such as W SF >2W FF , such as W SF >3W FF , or such as W SF >5W FF .

[0085] 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.

[0086] Embodiment 13. A nut or connector assembly according to any one of Embodiments 2 to 4, wherein the annular nut body includes a flexible bridge portion that flexibly connects the first circumferential portion and the second circumferential portion.

[0087] Embodiment 14. A nut or connector assembly according to any one of Embodiments 1 to 4, wherein the nut comprises a polymer, the polymer comprising any one of the following: 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.

[0088] Embodiment 15. A nut according to embodiment 1, wherein the connecting component of at least one of the first circumferential end and the second circumferential end includes at least one of the following: a nut, a bolt, a bearing, a stay, a buckle, a clip, a flange, a fork, a grommet, a hook eye, a latch, a peg, a nail, a rivet, a mortise and tenon, an anchor screw, a snap fastener, a suture, a threaded fastener, a connecting line, a toggle bolt, a wedge anchor, a screw, a bolt, a clamp, a retaining ring, a clip, a latch, a pin, a rivet, a connecting line, or a nail.

[0089] Embodiment 16. A connector assembly according to any one of Embodiments 3 to 4, wherein a seal is present between the body and the receiving portion.

[0090] Embodiment 17. A connector assembly according to embodiment 16, wherein the seal includes a male component and a female component.

[0091] Embodiment 18. A connector assembly according to any one of Embodiments 3 to 4, wherein the cavity of the body includes a main section and an enlarged end section opening outward, wherein the body includes a shoulder at the junction between the main section and the end section, and wherein the receiving portion is mounted within the body against the shoulder.

[0092] Embodiment 19. A connector assembly according to Embodiment 18, wherein the receiving portion has a useful inner surface, and the useful inner surface is configured to connect the main section of the cavity and the useful portion of the tube.

[0093] Embodiment 20. A connector assembly according to embodiment 18, wherein the useful inner surface of the receiving portion is cylindrical, and its diameter is substantially equal to the inner diameter of the main section.

[0094] Embodiment 21. A connector assembly according to embodiment 18, wherein the useful inner surface of the receiving portion is frustoconical.

[0095] Embodiment 22. A connector assembly according to any one of Embodiments 3 to 4, wherein the main body and the receiving portion lock the receiving portion relative to the main body in the radial direction.

[0096] Embodiment 23. A connector assembly according to Embodiment 3, wherein the nut is mounted at the periphery of the ring.

[0097] Embodiment 24. A connector assembly according to Embodiment 3, wherein the ring includes ribs.

[0098] Embodiment 25. A connector assembly according to any one of Embodiments 3 to 4, wherein the nut is configured to be threaded into the cavity of the body.

[0099] Embodiment 26. A connector assembly according to Embodiment 3, wherein the receiving portion has an annular groove.

[0100] Embodiment 27. A connector assembly according to Embodiment 3, wherein the tube includes an end portion that is bent against the support surface of the ring.

[0101] Embodiment 28. A connector assembly according to Embodiment 27, wherein the support surface of the ring contacts only a portion of the end portion of the tube.

[0102] Embodiment 29. A connector assembly according to Embodiment 28, wherein the support surface of the ring includes a beveled surface.

[0103] Embodiment 30. A connector assembly according to any one of Embodiments 3 to 4, wherein the body is a pump, a valve, a manifold, a fitting, or a plug.

[0104] Embodiment 31. A connector assembly according to any one of Embodiments 3 to 4, wherein the nut provides a leakage rate of between 100cc / min and 500cc / min for sealing at least one of the receiving portion via the first flange or the end portion.

[0105] Embodiment 32. A connector assembly according to embodiment 3, wherein the circumferential split is parallel to the central axis.

[0106] Embodiment 33. A connector assembly according to Embodiment 3, wherein the circumferential split is diagonal along the central axis.

[0107] Embodiment 34. A connector assembly according to Embodiment 3, wherein the circumferential split is in a sawtooth shape along the central axis.

[0108] Note that not all of the features described above are required, a portion of a particular feature may not be required, and one or more features other than those described may also be provided. Further, the order in which the features are described is not necessarily the order in which the features are installed.

[0109] For the sake of clarity, certain features described herein in the context of separate embodiments may also be provided in combination in a single embodiment. Conversely, various features described in the context of a single embodiment for the sake of brevity may also be provided separately or in any sub-combination.

[0110] Benefits, other advantages, and solutions to problems have been described above with respect to specific embodiments; however, the benefits, advantages, solutions to problems, and any features that may cause any benefit, advantage, or solution to occur or become more significant should not be construed as critical, required, or essential features of any or all the claims.

[0111] The description and illustration of the embodiments described herein are intended to provide a general understanding of the structure of various embodiments. Description and illustration are not intended to be used as a detailed and comprehensive description of all elements and features of the equipment and system using the structure or method described herein. Individual embodiments may also be provided in combination in a single embodiment, and on the contrary, the various features described in the context of a single embodiment for the sake of brevity may also be provided individually or in any sub-combination. In addition, reference to the values ​​described in the range includes each value within the range. Only after reading this specification, many other embodiments may be apparent to the technician. Other embodiments may be used and derived from the present disclosure, so that structural substitution, logical substitution or any change may be performed without departing from the scope of the present disclosure. Therefore, the present disclosure should be considered illustrative and not restrictive.

Claims

1. A nut for a connector assembly of a pipe, comprising: An annular nut body comprising a polymer and oriented along a central axis, the annular nut body comprising: A circumferential split, the circumferential split defining a first circumferential portion and a second circumferential portion, wherein the first circumferential portion and the second circumferential portion are flexibly connected by a flexible bridge portion, wherein the first circumferential portion includes a first circumferential end, and the second circumferential portion includes a second circumferential end, wherein the first circumferential end and the second circumferential end each include a connecting component suitable for fixing the first circumferential end and the second circumferential end together.

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

3. A connector assembly for a pipe, comprising: a main body provided with a cavity extending in an axial direction, a ring adapted to be mounted at the periphery of the useful portion of the tube and having at one end a support surface adapted to receive a curved end portion of the tube, and a nut adapted to be threaded onto the body so as to engage the ring to press the curved end portion of the tube against a receiving surface in the axial direction; and an annular receiving portion forming the receiving surface and removably mounted on the body, wherein the nut comprises: an annular nut body, and the annular nut body is oriented along a central axis, the annular nut body has a cross-section taken along the central axis, and the annular nut body includes: An axial protrusion, the axial protrusion comprising an external thread and an end portion; and a radial protrusion, the radial protrusion being arranged to be axially adjacent to the axial protrusion, wherein at least one of the following is satisfied: 1) the radial protrusion comprises a first flange protruding radially inwardly, wherein at least one of the first flange or the end portion is adapted to seal against a receiving portion, or 2) wherein the annular nut body comprises a polymer and also comprises a circumferential split.

4. The nut according to claim 2, wherein the axially protruding portion comprises a second flange protruding radially outwardly, wherein the second flange comprises an axially directed tab which is radially arranged and adapted to lock the nut against an adjacent component. The nut of claim 4 , wherein the axially oriented tab has a rectilinear 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 that flexibly connects 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 receiving portion.

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

10. The connector assembly of claim 9, wherein the useful inner surface of the receiving portion is cylindrical with a diameter substantially equal to the inner diameter of the main section.

11. The connector assembly of claim 9, wherein the useful inner surface of the receiving portion is frustoconical.

12. The connector assembly of claim 3, wherein the body and the receiving portion lock the receiving portion relative to the body in the radial direction.

13. The connector assembly of claim 3, wherein the nut is mounted at the periphery of the ring.

14. The connector assembly of claim 3, wherein the receiving portion has an annular groove.

15. The connector assembly of claim 3, wherein the tube includes an end portion that bends against the support surface of the ring.

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