FIELD

[0001J The present disclosure relates generally to swing-type check valves. BACKGROUND

[0002] A variety of types of valves exist, including bail valves, butterfly valves, gate valves, choke valves, and check valves. The suitability of these types of valves for a particular application may depend, for instance, on the environment in which the valve will operate and/or the desired performance characteristics of the valve. Check valves are a type of non-return valve that allow fluid (e.g., a liquid or a gas) to flow in only one direction. Check valves are commonly used in a variety of industries and for a variety of applications, including industrial and domestic applications.

[0003] Conventional check valves include a body, a hinge, and a disc connected to the hinge. The disc is configured to move between an open position and a closed position in which the disc forms a seal with a seat of the body. However, many conventional check valves have discs that are configured to spin relative to the hinge, which renders these conventional check valves unsuitable for certain industries and applications. For instance, American Petroleum Institute (API) Standard 594 requires that the discs of check valves be restricted from rotating 360 degrees. Rotation of the disc relative to the hmge may cause the disc to prematurely wear and thereby create a leak path between the disc and the seat of the body.

[0004] Additionally, API Standard 594 requires all of the components of the check valve to have at least the same corrosion resistance as the body of the check valve. Conventional check valves, which include additional components (e.g., a nut and a washer) to secure the disc to the hinge, may not satisfy, or may have difficult}' satisfying, this standard. For instance, it may be expensive, time-consuming to manufacture, and/or difficult to procure components, such as nuts and washers, having at least the same level of corrosion resistance as the body of the check valve.

SUMMARY

[0005J The present disclosure is directed to various embodiments of a check valve. In one embodiment, the check valve includes a clevis, a hinge configured to be rotatably coupled to the clevis, and a disc configured to be detachably coupled to the hinge. The hinge includes a first hinge body including a male member and a second hinge body defining a female feature corresponding to the male member. The second hinge body is configured to be detachably coupled to the first hinge body. When the first hmge body is coupled to the second hinge body, the male member of the first hinge is received in the female feature defined in the second hinge to prevent angular separation of the first hinge body from the second hinge body. The male member of the first hinge may have any suitable shape, such as a cylinder, a cylindrical segment, a rectangular prism, or a trapezoidal prism. The male member may be configured to be received in the female feature with a press fit connection. The male member may be integral with the first hinge body. The male member may be a locating pin separate from the first hinge body and a portion of the locating pin may be configured to be received in a receptacle defined in the first hinge body. A second female feature may be defined in the first hinge body further and a second male member may be provided on the second hinge body. The second male member is configured to be received in the second female feature when the first hinge body is coupled to the second hinge body. The disc may include a closure portion, a retention portion spaced apart from the closure portion, and a stem portion extending between the closure portion and the retention portion. When the first hinge body is coupled to the second hinge body, the first hmge body and second hinge body may cooperate to define an opening configured to receive the stem portion of the disc. The retention portion may be integral with the stem portion of tlie disc, the closure portion and the retention portion may each have a size larger than a size of the opening defined by the first and second hinge bodies, and when the disc is coupled to the hinge, the closure portion and the retention portion of the disc may be on opposite sides of the hinge. The opening defined by the first and second hinge bodies may have a non-circular cross- sectional shape and the stem portion of the disc may have a non-circular cross-sectional shape. Engagement between the stem portion of the disc and the opening of the hinge may be configured to prevent rotation of the disc relative to the hinge.

[0006] A check valve according to another embodiment of the present disclosure includes a clevis, a hinge configured to be rotatably coupled to the clevis, and a disc configured to be detachably coupled to the hinge. The hinge defines an opening having a non-circular cross- sectional shape. The disc includes a closure portion and a stem portion extending from the closure portion. At least a portion of the stem portion has a non-circular cross-sectional shape. When the disc is coupled to the hinge, the portion of the stem portion having the non-circular cross-sectional shape is received in the opening defined in the hinge. Engagement between the portion of the stem portion having the non-circular cross-sectional shape and the opening in the hinge is configured to prevent rotation of the disc relative to the hinge. The non-circular cross- sectional shape of the stem portion may include at least one flat surface and the non-circular cross-sectional shape of the opening in the hinge may include at least one flat surface. When the disc is coupled to the hmge, the at least one flat surface of the stem portion may be aligned with the at least one flat surface of the opening to prevent rotation of the disc relative to the hinge assembly. The opening defined in the hinge and the portion of the stem portion of the disc may each have a truncated circular cross-sectional shape. The non-circular shape of the opening may be different than the non-circular shape of the stem portion of the disc. The opening in the hinge may have any suitable non-circular cross-sectional shape, such as a prismatic shape, a non- prismatic shape, or an irregular shape. Tire hinge may include an arm and a connection member connected to the arm. When the disc is coupled to the hinge, the connection member may extend at least partially around the stem portion of the disc. The hinge may include a first hinge body and a second hinge body configured to be detachably coupled to the first hinge body. The first hinge body may include a male member and the second hinge may define a female feature configured to receive the male member.

[0007] A check valve according to a further embodiment of the present disclosure includes a clevis, a hinge configured to be rotatably coupled to the clevis, and a disc configured to be detachably coupled to the hmge. The hinge defines an opening. The disc includes a closure portion, a stem portion extending from the closure portion, and at least one stop on the closure portion. When the disc is coupled to the hinge, the stem, portion of the disc extend s through the opening defined by the hinge. When the disc rotates relative to the hinge, the at least one stop contacts the hmge to limit further rotation of the disc relative to the hinge. The disc may include a first stop and a second stop spaced apart from the first stop.

[0008] This summary is provided to introduce a selection of features and concepts of embodiments of the present disclosure that are further described below in the detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used in limiting the scope of the claimed subject matter. One or more of the described features may be combined with one or more other described features to provide a workable device.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] These and other features and advantages of embodiments of the present disclosure will become more apparent by reference to the following detailed description when considered in conjunction with the following drawings. In the drawings, like reference numerals are used throughout the figures to reference like features and components. The figures are not necessarily drawn to scale, nor is every feature in the drawings necessarily required to fall within the scope of the described invention. [0010] FIGS, 1A-1B are cross-sectional views of a check valve according to one embodiment of the present disclosure in an open position and a closed position, respectively;

[0011] FIGS. 2A-2B are a perspective view and a cross-sectional view, respectively, of a hinge and a disc according to the embodiment of the check valve illustrated in FIGS. 1 A-1 B;

[0012] FIGS. 3A-3B are an assembled perspective vie and an exploded perspective view, respectively, of the hinge according to the embodiment of the check valve illustrated in FIGS. 1A-1B;

[0013] FIG. 4 is a perspective view of a disc according to the embodiment of the check valve illustrated in FIGS. 1 A- IB;

[0014] FIG. 5 is an exploded perspective view of a hinge according to another embodiment of the present disclosure;

[0015] FIG. 6 is an exploded perspective view of a hinge according to another embodiment of the present disclosure;

[0016] FIG. 7 is an exploded perspective view of a hinge according to another embodiment of the present disclosure;

[0017] FIG. 8 is an exploded perspective view of a hinge according to another embodiment of the present disclosure; and

[0018] FIG. 9 is a perspective view of a hinge and disc according to another embodiment of the present disclosure.

DETAILED DESCRIPTION

[0019] The present disclosure is directed to various embodiments of a swing-type check valve. ^' The check valves according to various embodiments of the present disclosure include one or more anti-rotation features configured to prevent or at least restrict rotation of a disc relative to a hinge of the check valve. Additionally, the check valves according to various embodiments of die present disclosure include a two-piece hinge assembly with one or more features to prevent the two-piece hinge assembly from inadvertently separating from the assembled condition. The check valves of the present disclosure may be used in a variety of applications to restrict or constraint the direction of fluid flow (e.g., gas or liquid flow) through a pipe, such as, for instance, in the chemical or petro-chemical industry (e.g., an oil and gas refinery) or in any other suitable industries.

[0020] With reference now to FIGS. 1A-1B, a check valve 100 according to one embodiment of the present disclosure includes a valve body 101 and a valve assembly 102 housed in the valve body 101. In the illustrated embodiment, the valve body 101 includes at least one sidewall 103 defining a port or conduit 104 for the transportation of a fluid (e.g., gas or liquid) through the valve body 101. Additionally, in the illustrated embodiment, valve body 101 includes an inlet flange 105 at one end of the sidewall 103 and an outlet flange 106 at an opposite end of the sidewall 103. The inlet flange 105 is configured to connect to one end of a first pipe and the outlet flange 106 is configured to connect to one end of a second pipe such that the valve body 101 is configured to connect two adjacent pipes or pipe segments together.

[0021] Additionally, in the illustrated embodiment, the valve body 101 also includes at least one sidewall 107 defining an access port 108 in fluid communication with the conduit 104. In the illustrated embodiment, the access port 108 extends in a direction transverse to the direction in which the conduit 104 extends, although in one or more embodiments, the access port 108 may extend in any other suitable direction relative to the conduit 104. In the illustrated embodiment, the valve body 101 also includes an access port flange 109 at an outer end of the sidewall 107 defining the access port 108.

[0022] With continued reference to the embodiment illustrated in FIGS. 1A-1B, the valve assembly 102 extends down through the access port 108 and into the conduit 104. In the illustrated embodiment, the valve assembly 102 includes a clevis 1 0, a hinge 1 1 rotatably coupled to the clevis 110, and a disc 112 detachably coupled to the hinge 11. The hinge 111 and the disc 112 are configured to rotate (arrow 113) about the clevis 110 between an open position (FIG. 1 A) and a closed position (FIG. IB). When fluid (e.g., a gas or a liquid) flows through the conduit 104 in a first direction (e.g., to the right in FIGS. 1A-1B), the fluid flow is configured to rotate (arrow 113) the hinge 111 and the disc 112 into the open position (FIG. 1A). When the disc 112 is in the open position, the conduit 104 is at least partially unobstructed by the disc 112, which permits fluid to flow through the conduit 104. When fluid (e.g., a gas or a liquid) flows through the conduit 104 in a second direction opposite the first direction (e.g., to the left in FIGS. 1A-1B), the fluid flow is configured to rotate (arrow 113) the hinge 111 and the disc 112 into the closed position (FIG. IB). WTien the disc 112 is in the closed position, the disc 112 completely obstmcts or substantially completely obstructs the conduit 104 to prevent or at least restrict the flow of fluid through the conduit 104 in the second direction. Accordingly, the check valve 100 is a type of non-return valve (NRV) configured to permit fluid to flow through the valve body 101 in a first direction (e.g., to the right in FIGS. 1A-1B) and to prevent fluid flow in a second direction (e.g., to the left in FIGS. 1A-1B) opposite the first direction.

[0023] In the illustrated embodiment, the valve body 101 also defines a seat 114 (e.g., an annular flange) configured to engage a portion of the disc 112 when the disc 112 is in the closed position. In one or more embodiments, the seat 114 may have any other suitable configuration, such as, for instance, an annular recess. In one or more embodiments, the seat 114 may include a gasket. The seat 114 is configured form a seal with the disc 112 to prevent or substantially prevent flow through the conduit 104 of the valve body 101 in the second direction (e.g., to the left in FIGS. 1A-1B).

[0024] In the illustrated embodiment, the check valve 100 also includes a bonnet or a cover 115. In the illustrated embodiment, the cover 115 is a square member, although in one or more embodiments, the cover 115 may have any other suitable shape (e.g., circular). The cover 115 is configured to be detachably coupled to the access port flange 109. When the cover 115 is coupled to the access port flange 109, the cover 115 forms a seal around the access port flange to the clevis 110 (e.g., the clevis 110 is connected to a lower surface of the cover 115). Accordingly, in the illustrated embodiment, when the hinge 111 is rotatably coupled to the clevis 110 and the disc 112 is coupled to the hinge 111, the cover 115 supports the clevis 110, the hinge 111, and the disc 112.

[0025] With reference now to FIGS. 2A-2B, the clevis 110 according to the illustrated embodiment includes a base 116 and a pair of forks 117, 118 extending down from the base 116. The base 116 of the clevis 110 is connected to the cover 115. In one or more embodiments, the clevis 110 may be detachably coupled to the cover 115 (e.g., by one or more fasteners). In one or more embodiments, the clevis 110 may be integral with the cover 115 (e.g., the cover 115 and the clevis 110 may be a monolithic member). In one or more embodiments, the clevis

110 may be provided without the base 116 and the forks 117, 118 may be connected directly to the cover 115. The forks 117, 118 of the clevis 110 are spaced apart by a gap 119 configured to receive or accommodate a portion of the hinge 111, as described in more detail below. Additionally, a lower end of each fork 117, 118 defines an opening (e.g., a hole) 120, 121, respectively. The opening 120 defined in one of the forks 117 is aligned with the opening 121 defined in the other fork 118.

[0026] With reference now to FIGS. 2A-3B, the hinge 111 in the illustrated embodiment is an assembly including a first hinge body 122 (e.g., a left hinge body) and a second hinge body 123 (e.g., a right hinge body) configured to be detachably coupled to the first hinge body 122. The first and second hinge bodies 122, 123 are configured to be coupled together around the disc 112 to couple the disc 112 to the hinge 111. In the illustrated embodiment, each of the first and second hinge bodies 122, 123 includes an arm 124, 125 having a proximal end 126, 127 and a distal end 128, 129, respectively. Additionally, each hinge body 122, 123 includes a connection member 130, 131 at the distal end 128, 129 of the arm 124, 125, respectively. In the illustrated embodiment, the arm 124, 125 and the connection member 130, 131 of each hinge body 122, 23 are integral, although in one or more embodiments, the connection members 130, 131 may be separate components configured to be coupled to the arms 124, 125, respectively, by any suitable mechanism (e.g., one or more fasteners). In the illustrated embodiment, the proximal end 126, 127 of each arm 124, 125 defines an opening 132, 133 extending in a transverse direction. The openings 132, 133 in the hmge bodies 122, 123 are configured to align and receive a clevis pin 134 rotatabiy coupling the hinge 111 to the clevis 110, as illustrated in FIG. 2A. The clevis pin 134 extends through the opening 120 in one of the forks 117, through the openings 132, 133 in the first and second hinge bodies 122, 123, and through the opening 121 in the other fork 118 to rotatabiy (arrow 113) couple the hmge 111 to the clevis 110. Although in the illustrated embodiment the arm 124, 125 of each hinge body 122, 123 is curved, in one or more embodiments, the arm 124, 125 of each hinge body 122, 123 may be straight or substantially straight.

[0027] With continued reference to the embodiment illustrated in FIGS. 2A-3B, the connection member 130, 131 of each hinge body 122, 123 is curved (e.g., arcuate). In the illustrated embodiment, the connection members 130, 131 of the hinge bodies 122, 123 are semi-annular (e.g., semi-circular). In one or more embodiments, the connection members 130, 131 may have any other suitable shape. Additionally, in the illustrated embodiment, each connection member 130, 131 defines a notch 135, 136, respectively. In the illustrated embodiment, each notch 135, 136 is defined by a straight inner wall segment 137, 138 and a curved inner wall segment 139, 140 extending from an outer end of the straight inner wall segment 137, 138, respectively. When the first and second hinge bodies 122, 123 are brought together to form the hinge 111, the notches 135, 136 in the first and second hinge bodies 122, 123 cooperate to define an opening 141 (see FIG. 3A) in the hinge 111 that is configured to receive or accommodate a portion of the disc 112, as described in more detail below.

[0028] Still referring to the embodiment illustrated in FIGS. 2A-3B, the opening 141 defined in the hinge 111 has a non-circular shape configured to prevent rotation of the disc 112 relative to the hinge 11 . in the illustrated embodiment, the opening 141 has a truncated circular cross-sectional shape. As best illustrated in FIG. 3 A, the truncated circular cross-sectional shape of the opening 141 defined by the hinge 111 includes a curved portion (e.g., a curved surface) 142 defined by the curved inner wall segments 139, 140 of the notches 135, 136 and a straight segment (e.g., a flat surface) 143 defined by the straight inner wall segments 137, 138 of the notches 135, 136. Although in the illustrated embodiment the opening 141 defined in the hinge 111 includes a single flat surface 143, in one or more embodiments, the opening 141 may include any other suitable number of flat surfaces, such as, for instance, two or more fiat surfaces. Furthermore, although in the illustrated embodiment the flat surface 143 of the opening 141 in the hinge 111 is located along an upper end of the opening 141, in one or more embodiments, the flat surface 143 may have any other suitable position along the opening 141 (e.g., the flat surface 143 of the opening 141 in the hinge 111 may be located along a lower end of the opening 141 or along one of the sides of the opening 141). Additionally, in one or more embodiments, the opening 141 defined in the hinge 111 may have any oilier suitable non- circular shape, such as, for instance, a polygonal cross-sectional shape (e.g., a square, a pentagonal, or a hexagonal cross-sectional shape) or an elliptical shape. Additionally, in one or more embodiments, the opening 141 defined in the hinge 111 may have an irregular shape (e.g., a non-axisymmetric shape). Although in the illustrated embodiment, the connection member 130 of the first hinge body 122 has the same shape as the connection member 131 of the second hinge body 123, in one or more embodiments, the connection members 130, 131 of the first and second hinge bodies 122, 123 may have different shapes. For instance, in one or more embodiments, the shape of the notch 135 defined in the first hinge body 122 may be different than the shape of the notch 136 defined in the second hinge body 123. In one or more embodiments, only one of the notches 135, 136 may contribute to the non-circularity of the opening 141. For instance, in one or more embodiments, one of the notches 135, 136 may be semi-circular and the other notch 135, 136 may have a non-semi-circular shape (e.g., a truncated semi-circular shape).

0029J With reference now to the embodiment illusiraied in FIG. 3B, the first and second hinge bodies 122, 123 each include an upper surface 144, 145, respectively, and a lower surface 146, 147, respectively. Additionally, the first and second hinge bodies 122, 123 each include an outer surface 148, 149, respectively, and an inner interface surface 150, 151, respectively, extending from the upper surface 144, 145 to the lower surface 146, 147, respectively. The interface surface 150 of the first hinge body 122 is configured to abut (e.g., contact or engage) the interface surface 151 of the second hinge body 123 when the hinge bodies 122, 123 are coupled together. Additionally, in the illustrated embodiment, the first hinge body 122 includes a male member (e.g., a projection) 152 extending from the interface surface 150 of the first hinge body 122 and the second hinge body 123 defines a corresponding female feature (e.g., a recess) 153 in the interface surface 151 of the second hinge body 123 that is configured to receive at least a portion of the male member 152 of the first hinge body 122 (e.g., the male member 152 of the first hinge body 122 is configured to mate with the female feature 153 defined in the second hinge body 123). In the illustrated embodiment, the male member 152 has a cylindrical shape and the female feature 153 has a corresponding cylindrical shape. In one or more embodiments, the male member 152 and the female feature 153 may have any other suitable shape, such as, for instance, a prismatic shape, any other suitable non-prismatic shape, or combinations thereof. Additionally, although in the illustrated embodiment the hinge 111 includes a single male member 152 and a single female feature 153, in one or more embodiments, the hinge 111 may include any other suitable number of male members and corresponding female features, such as, for instance, two or more male members and two or more corresponding female features. Additionally, although in the illustrated embodiment the first hinge body 122 includes the male member 152 and the second hinge body 123 includes the corresponding female feature 153, in one or more embodiments, the first hinge body 122 may include the female feature 153 and the second hinge body 123 may include the male member 152,

0030| In one or more embodiments, the male member 152 of the first hinge body 122 is configured to be received in the female feature 153 defined in the second hinge body 123 with a press fit (i.e., a friction fit) connection. In one or more embodiments, the male member 152 of the first hmge body 122 may be configured to be received in the female feature 153 defined in the second hinge body 123 with any other suitable fit, such as, for instance, a clearance fit or a location fit connection. Additionally, in one or more embodiments, the male member 152 may be integral with the first hinge body 122. In one or more embodiments, the male member 152 may be separately formed from the first hinge body 122 and may be coupled to the first hinge body 122 by any suitable process. For instance, in one or more embodiments, the interface surface 150 of the first hinge body 122 may define a receptacle (e.g., a bore) configured to receive a portion of the male member 152. For instance, in one or more embodiments, the male member 152 may be a separate member, such as a locating pin, configured to be received in corresponding openings in the interface surfaces 150, 151 of the first and second hinge bodies 122, 123.

Θ031] The engagement between the male member 152 and the corresponding female feature 153 is configured to prevent or at least limit (e.g., minimize) rotation of the first hinge body 122 relative to the second hinge body 123. For instance, in one or more embodiments, the engagement between the male member 152 and the corresponding female member 153 is configured to prevent or at least limit the first and second hinge bodies 122, 123 from differentially rotating (arrow 113) about the clevis 110 into different angular positions. Preventing or at least limiting rotation of the fi rst and second hinge bodies 122, 123 relative to each other is configured to mitigate the potential for the first and second hinge bodies 122, 123 to rotationally or angularly separate from each other. Otherwise, the angular separation of the first and second hinge bodies 122, 123 from each other may cause or allow the disc 112 to inadvertently detach from the hinge 111,

0032J With reference now to FIG. 4, the disc 112 in the illustrated embodiment includes a closure portion 154, a retention portion 155 spaced apart from the closure portion 154, and a stem portion 156 extending from the closure portion 154 to the retention portion 155. In the illustrated embodiment, the closure portion 154 has a circular cross-sectional shape. When the disc 112 is in the closed position (FIG. IB), the closure portion 154 of the disc 112 is configured to engage the seat 114 of the valve body 101 and completely obstruct or substantially completely obstruct the conduit 104 defined in the valve body 101 to restrict the flow of fluid through the conduit 1.04 in one direction . In one or more embodiments, the closure portion 154 of the disc 112 may have any other suitable configuration depending, for instance, on the cross-sectional size and shape of the conduit 104 defined in the valve body 101. Additionally, in the illustrated embodiment, the retention portion 155 of the disc 112 has a circular cross-sectional shape, although in one or more embodiments, the retention portion 155 may have any other suitable cross-sectional shape.

[0033] With continued reference to the embodiment illustrated in FIG. 4, the stem portion 156 of the disc 112 has a non-circular cross-sectional shape. As described in more detail below, the non-circular cross-sectional shape of the stem portion 156 is configured to prevent or at least limit rotation of the disc 112 relative to the hinge 111. Although in the illustrated embodiment the entire length or substantially the entire length of the stem portion 156 has a non-circular cross-sectional shape, in one or more embodiments, only a portion of the length of the stem portion 156 may have a non-circular cross-sectional shape. In the illustrated embodiment, the stem portion 156 has a truncated circular cross-sectional shape. The truncated circular cross- sectional shape includes a curved portion (e.g., a curved surface) 157 and a straight segment (e.g., a flat surface) 1.58. Although in the illustrated embodiment the stem portion 156 of the disc 112 includes a single flat surface, in one or more embodiments, the stem portion 156 may include any other suitable number of flat surfaces 158, such as, for instance, two or more flat surfaces. Additionally, in one or more embodiments, the stem portion 156 of the disc 112 may have any other suitable non-circular shape, such as, for instance, a polygonal cross-sectional shape (e.g., a square, a pentagonal, or a hexagonal cross-sectional shape) or an elliptical shape. Additionally, in one or more embodiments, the stem portion 156 of the disc 112 may have an irregular shape (e.g., a non-axisymmetric shape). Additionally, in the illustrated embodiment, the stem portion 156 of the disc 112 has the same cross-sectional shape as the opening 141 (see FIG. 3A) defined in the hinge 111 (e.g., the cross-sectional shape of the stem portion 156 of the disc 112 corresponds to the cross-sectional shape of the opening 141 defined in the hinge 111 ). In one or more embodiments, the cross-sectional shape of the stem portion 156 of the disc 112 may be different than the cross-sectional shape of the opening 141 defined in the hinge 111.

[0034] To assemble the valve assembly 102, the first and second hinge bodies 122, 123 may ^¬ be brought together around the stem portion 156 of the disc 112. As the hinge bodies 122, 123 are brought together, the male member 152 (e.g., the projection) on the first hinge body 122 extends into the female feature 153 (e.g., the recess) defined in the second hinge body 123. In one or more embodiments, the first and second hinge bodies 122, 123 may be brought together until the interface surface 150 of the first hinge body 122 contacts the interface surface 151 of the second hinge body 123, In one or more embodiments, the male member 152 (e.g., the projection) on the first hinge body 122 may be received in the female feature 153 (e.g., the recess) in the second hinge body 123 with a press fit (i.e., a friction fit), a clearance fit, or a location fit connection. As described above, the engagement between the male member 152 (e.g., the projection) on the first hinge body 122 and the female feature 153 (e.g., the recess) defined in the second hinge body 123 is configured to prevent the first and second hinge bodies 122, 123 from rotating relative to each other and thereby angularly separating, which could cause or allow the disc 112 to inadvertently detach from the hinge 11. ΘΘ35] Additionally, the hinge bodies 122, 123 may be brought together around the stem portion of the disc 112 such that the connection members 130, 131 of the hinge bodies 122, 123 extend around the stem portion 156 of the disc 112. Although in the illustrated embodiment the connection members 130, 131 are configured to cooperate to extend completely or substantially completely around the stem portion 156 of the disc 112, in one or more embodiments, the connection members 130, 131 may be configured not to extend completely around the stem portion 156 of the disc 112. Additionally, the disc 112 may be oriented such that the non- circular shape of the stem portion 156 is properly aligned with the non-circular shape of the opening 141 defined in the hinge 111 as the hinge bodies 122, 123 are brought together around the stem portion 156 of the disc 112. For instance, in the illustrated embodiment, the disc 112 may be oriented (e.g., rotated) such that the flat surface 158 of the stem portion 156 is aligned with the straight inner wall segments 137, 138 of the hinge bodies 122, 123 as the hinge bodies 122, 123 are brought together around the stem portion 156 of the disc 112. Accordingly, once the first and second hinge bodies 122, 123 have been brought together to form the hinge 111 and the stem portion 156 of the disc 112 is received in the opening 141 defined in the hinge 111, the flat surface 158 of the stem portion 156 is aligned with the straight segment (e.g., the flat surface) 143 of the opening 141 defined in the hinge 11 and the curved portion (e.g., the curved surface) 157 of the stem portion 156 is aligned with the curved portion (e.g., the curved surface) 142 of the opening 141 defined in the hinge 111. The engagement between the fiat surface 158 of the stem portion 156 and the flat surface 143 of the opening 141 defined in the hinge 111 is configured to prevent rotation (e.g., spinning) of the disc 112 relative to the hinge 111. In the illustrated embodiment, the engagement is configured to prevent rotation of the disc 112 about a longitudinal axis L (see FIG. 2 A) of the stem portion 156 of the disc 112. Accordingly, in the illustrated embodiment, the disc 112 is keyed to the hinge 111. As described above, the opening in the hinge 111 and the stem portion of the disc 112 may have a variety of other non-circular shapes configured to prevent or at least limit rotation of the disc 112 relative to the hinge 11.

0036J Otherwise, rotation (e.g., spinning) of the disc 112 relative to the hinge 111 when the disc 112 is in the closed position (FIG. IB) may cause the closure portion 154 of the disc 112 to prematurely wear due to the friction between the seat 114 of the valve body 101 and the closure portion 154 of the disc 112. Premature wear of the closure portion 154 of the disc 112 may create a gap between the closure portion 154 of the disc 112 and the seat 114 of the valve body 101 that may create a leak path allowing fluid (e.g., gas or liquid) to flow past the closure portion 154 of the disc 112 in the second direction (e.g., to the left in FIG. IB) when the disc 112 is in the closed position.

[0037] When the disc 112 is coupled to the hinge 111, the closure portion 154 and the retention portion 155 of the disc 112 are on opposite sides of the hinge 111. In the illustrated embodiment, the retention portion 155 of the disc 112 is received in recesses 159, 160 (see FIGS. 3A-3B) in the upper surfaces 144, 145, respectively, of the hinge 111, the stem portion 156 of the disc 112 extends through the opening 141 in the hinge 111, and the closure portion 154 of the disc 112 is on or below the lower surfaces 146, 147 of the hinge 111. In one or more embodiments, the hinge 111 may be provided without the recesses 159, 160 and the retention portion 155 of the disc 11.2 may be configured to engage the upper surfaces 144, 145 of the hinge 111 when the disc 112 is connected to the hinge 111. In the illustrated embodiment, the closure portion 154 and the retention portion 155 of the disc 112 each have a size (e.g., an outer diameter) larger than the size of the opening 141 defined in the hinge 111. Because the retention portion 155 of the disc 112 is larger than the opening 141 defined in the hinge 111, the retention portion 155 of the disc 112 is configured to prev ent the disc 112 from in adv ertently disengaging the hinge 111 (e.g., the retention portion 155 of the disc 112 is configured to engage the recesses 159, 160 in the upper surfaces 144, 145 of the hinge 111 to prevent the stem portion 156 of the disc 112 from inadvertently sliding out of the opening 141 defined in hinge 111). [0038] In the illustrated embodiment, the closure portion 154, the stem portion 156, and the retention portion 155 of the disc 112 are integral (e.g., the disc 112 is a monolithic member). The monolithic disc 112 facilitates attaching the disc 112 to the hinge 111 without additional components, such as nuts and washers. That is, in the illustrated embodiment, the retention portion 155, which is an integral portion of the monolithic disc 112, is configured to retain the disc 112 connected to the hinge 111 in the manner described above without the need for a nut and a washer.

[0039] Additionally, the monolithic disc 112 facilitates compliance with American Petroleum Institute (APT) Standard 594, which requires that each component of the valve assembly 102 have at least the same level or degree of corrosion resistance as the valve body 101. Accordingly, in one or more embodiments, the monolithic disc 112 may be formed out of a material having a corrosion resistance equal to or greater than the corrosion resistance of the valve body 101. Otherwise, the additional components used to secure the disc 112 to the hinge 111, such as a nut and washer, must be made out of a material having at least the same corrosion resistance as the valve body 101, which may be expensive to manufacture or procure.

[0040] As described above, in the illustrated embodiment, the retention portion 155 of the disc 112 is larger than the opening 141 defined in the hinge 111 and the disc 112 is a monolithic member (e.g., the closure portion 154, the stem portion 156, and the retention portion 155 of the disc 112 are integral). Accordingly, the two-piece hinge 111 (e.g., the first and second hinge bodies 122, 123) facilitates connecting the hinge 111 to the disc 112. That is, the two-piece hinge 111 facilitates attaching the hinge 111 to the disc 112 by bringing the first and second hinge bodies 122, 123 together around the stem, portion 156 of the disc 112. Otherwise, the integral retention portion 155 of the disc 112, which is larger than the opening 141 in the hinge 111 , may prevent connecting the disc 112 to the hinge 111.

[0041] In one or more alternate embodiments, the retention portion 155 of the disc 112 maybe configured to be detachably coupled to the stem portion 156 of the disc 112. For instance, in one or more embodiments, the detachable retention portion 155 of the disc 1 2 may include an externally threaded shank configured to be threaded into an internally threaded bore in the stem portion 156 of the disc 112. In one or more embodiments, the detachable retention portion 155 of the disc 112 may include an internally threaded bore configured to receive an externally threaded shank on the stem portion 156 of the disc 112. In one or more embodiments, the detachable retention portion 155 may be a nut and at least a portion of the stem portion 156 may include external threads configured to be engaged by the nut. Additionally, in one or more embodiments in which the retention portion 155 of the disc 112 is detachable, the hinge 111 may be a single monolithic component. In an embodiment in which the hinge 111 is a single monolithic component, the disc 1 2 may be coupled to the hinge 111 by detaching the retention portion 155 of the disc 112 from the stem portion 156, inserting the stem portion 156 of the disc 112 into the opening 141 defined in the hinge 111, and attaching the retention portion 155 to the stem portion 156 to secure the disc 112 to the hinge 111.

[0042J Once the hinge bodies 122, 123 have been brought together around the stem portion 156 of the disc 112 to couple the hinge 111 to the disc 112, the hinge 111 and the disc 112 may be rotatably (arrow 113) coupled to the clevis 110 by inserting the proximal end of the hinge 111 into the gap 119 between the forks 117, 118 of the clevis 11.0 and aligning the openings 132, 133 in the hinge 111 with the openings 120, 121 in the forks 117, 18. Tire hinge 111 may then be rotatably coupled to the clevis 110 by inserting the clevis pin 134 through the opening 120 in one of the forks 117, through the openings in the proximal end of the hinge 111, and through the opening 121 in the other fork 118. The clevis pin 134 may be secured to the clevis 110 and the hinge 111 by a cotter pin or any other suitable mechanism.

[0043] Once the hinge 111 and the disc 112 are rotatably coupled to the clevis 110, the valve assembly 102 (e.g., the clevis 110, the hinge 111, and the disc 1 2) may be inserted into the access port 108 of the valve body 01 such that the disc 1 2 extends down into the conduit 104 of the valve body 101. The cover 115 may then be coupled to the access port flange 109 to form a seal around the outer end of the access port 108. in one or more embodiments in which the clevis 10 is a separate component from the cover 1 IS, the clevis 110 may be coupled to the cover 115 (e.g., by fasteners) before inserting the valve assembly 102 into the access port 108 of the valve body 101. Once the valve assembly 102 is housed in the valve body 101, the valve assembly 102 is configured to rotate (arro 113) between an open position (FIG. 1A) to permit fluid to flow in a first direction through the conduit 104 and a closed position (FIG. IB) to prevent fluid from, flowing in a second direction through the conduit 104.

[0044] FIGS. 5-8 depict hinges according to alternate embodiments of the present disclosure. The hinges may be the same as or similar to the embodiment of the hinge described above with reference to FIGS. 1A-3B except for the configuration of the male and female features of the first and second hinge bodies that are configured to prevent the first and second hinge bodies from radially separating from each other.

[0045] With reference now to FIG. 5, a hinge 200 according to one embodiment of the present disclosure includes a first hinge body 201 and a second hinge body 202 configured to be detachably coupled to the first hinge body 201. Each hinge body 201, 202 includes an arm 203, 204 having a proximal end 205, 206 and a distal end 207, 208 and a connection member 209, 210 extending from the distal end 207, 208 of the arm 203, 204, Additionally, each connection member 209, 210 defines a notch 211, 2 2. Together, the notches 2 1, 212 in the first and second hinge bodies 201, 202 define an opening 213 having a non-circular cross-sectional shape. The configuration of the arms 203, 204, the connection members 209, 210, and the notches 211, 212 defined by the connection members 209, 210 may be the same or similar to any of the configurations of the arms 124, 125, the connection members 130, 131, and the notches 135, 136 described above with reference to embodiment of the hinge 111 illustrated in FIGS. 1A-3B.

[0046] Additionally, in the illustrated embodiment, each of the arms 203, 204 defines an interface surface 214, 215, respectively. The interface surface 214 of the first hinge body 201 is configured to abut (e.g., contact or engage) the interface surface 215 of the second hinge body 202 when the hinge bodies 201, 202 are coupled together to form the hinge 200, in the illustrated embodiment, the first hinge body 201 includes a male member 216 (e.g., a projection) extending from the interface surface 214 of the first hinge body 201 and the second hinge body 202 defines a corresponding female feature 217 (e.g., a recess) in the interface surface 215 of the second hinge body 202 that is configured to receive at least a portion of the male member 216 of the first hinge body 201 (e.g., the male member 216 of the first hinge body 201 is configured to mate with the female feature 217 defined in the second hinge body 202). In the illustrated embodiment, the male member 216 of the first hinge body 201 has a rectangular prismatic shape and the female feature 21 defined in the interface surface 215 of the second hinge body 202 has a corresponding rectangular prismatic shape. Hie male member 216 of the first hinge body 201 may be configured to be received in the female feature 217 in the second hinge body 202 with a press fit (i.e., a friction fit), a clearance fit, or a location fit connection. Although in the illustrated embodiment the first hinge body 201 includes the male member 216 and the second hinge body 202 includes the corresponding female feature 217, in one or more embodiments, the first hinge body 201 may include the female feature 217 and the second hinge body 202 may include the male member 216. In one or more embodiments, the male member 216 may be integral with the first hinge body 201. In one or more embodiments, the male member 216 may be separately formed from the first hinge body 201 and may be coupled to the first hinge body 201 by any suitable process. For instance, in one or more embodiments, the interface surface 214 of the first hinge body 201 may define a receptacle (e.g., a slot) configured to receive a portion of the male member 216. In the same or substantially the same manner as described above, the engagement between the male member 216 and the corresponding female feature 217 when the first and second hinge bodies 201, 202 are brought together is configured to prevent the first hinge body 201 from rotational!y separating from the second hmge body [0047] With reference now to FIG. 6, a hinge 3Θ0 according to one embodiment of the present disclosure includes a first hinge body 301 and a second hinge body 302 configured to be detachably coupled to the first hinge body 301. Each hinge body 301, 302 includes an arm 303, 304 having a proximal end 305, 306 and a distal end 307, 308 and a connection member 309, 310 extending from the distal end 307, 308 of the a m 303, 304. Additionally, each connection member 309, 310 defines a notch 311, 312. Together, the notches 311, 312 in the first and second hinge bodies 301 , 302 define an opening 313 having a non-circular cross-sectional shape. The configuration of the amis 303, 304, the connection members 309, 310, and the notches 31 1 , 312 defined by the connection members 309, 310 may be the same or similar to any of the configurations of the anrss 124, 125, the connection members 130, 131, and the notches 135, 136 described above with reference to embodiment of the hinge 111 illustrated in FIGS. 1A-3B.

[0048] Additionally, in the illustrated embodiment, each of the arms 303, 304 defines an interface surface 314, 315, respectively. The interface surface 314 of the first hinge body 301 is configured to abut (e.g., contact or engage) the interface surface 315 of the second hinge body 302 when the hinge bodies 301, 302 are coupled together to fonn the hinge 300. In the illustrated embodiment, the first hinge body 301 includes a male member 316 (e.g., a projection) extending from the interface surface 314 of the first hinge body 301 and the second hinge body 302 defines a corresponding female feature 317 (e.g., a recess) in the interface surface 315 of the second hinge body 302 that is configured to receive at least a portion of the male member 316 of the first hinge body 301 (e.g., the male member 316 of the first hinge body 301 is configured to mate with the female feature 317 defined in the second hinge body 302). In the illustrated embodiment, the male member 316 of the first hinge body 301 has a cylindrical segment shape (e.g., a semi-cylindrical shape) and the female feature 317 defined in the interface surface 315 of the second hinge body 302 has a corresponding cylindrical segment shape (e.g., a semi-cylindrical shape). The male member 316 of the first hinge body 301 may be configured to be received in the female feature 317 in the second hinge body 302 with a press fit (i.e., a friction fit), a clearance fit, or a location fit connection . Although in the illustrated embodiment the first hinge body 301 includes the male member 316 and the second hinge body 302 includes the corresponding female feature 317, in one or more embodiments, the first hinge body 301 may include the female feature 317 and the second hinge body 302 may include the male member 316. In one or more embodiments, the male member 316 may be integral with the first hinge body 301. In one or more embodiments, the male member 316 may be separately formed from the first hinge body 301 and may be coupled to the first hinge body 301 by any suitable process. For instance, in one or more embodiments, the interface surface 314 of the first hinge body 301 may define a receptacle (e.g., a slot) configured to receive a portion of the male member 316. In the same or substantially the same manner as described above, the engagement between the male member 316 and the corresponding female feature 317 when the first and second hinge bodies 301, 302 are brought together is configured to prevent the first hinge body 301 from rotationally separating from the second hinge body 302.

[0049] With reference now to FIG. 7, a hinge 400 according to one embodiment of the present disclosure includes a first hinge body 401 and a second hinge body 402 configured to be detachably coupled to the first hinge body 401. Each hinge body 401, 402 includes an arm 403, 404 having a proximal end 405, 406 and a distal end 407, 408 and a connection member 409, 410 extending from the distal end 407, 408 of the arm 403, 404. Additionally, each connection member 409, 410 defines a notch 411, 412. Together, the notches 411, 412 in the first and second hinge bodies 401, 402 define an opening 413 having a non-circular cross-sectional shape. The configuration of the amis 403, 404, the connection members 409, 410, and the notches 411 , 412 defined by the connection members 409, 410 may be the same or similar to any of the configurations of the arms 124, 125, the connection members 130, 131, and the notches 135, 136 described above with reference to embodiment of the hinge 111 illustrated in FIGS. 1A-3B. [0050] Additionally, in the illustrated embodiment, each of the arms 403, 404 defines an interface surface 414, 415, respectively. The interface surface 414 of the first hinge body 401 is configured to abut (e.g., contact or engage) the interface surface 415 of the second hinge body 402 when the hinge bodies 401, 402 are coupled together to form the hinge 400. In the illustrated embodiment, the first hinge body 401 includes a male member 416 (e.g., a projection) extending from the interface surface 414 of the first hinge body 401 and the second hinge body 402 defines a corresponding female feature 417 (e.g., a recess) in the interface surface 415 of the second hinge body 402 that is configured to receive at least a portion of the male member 416 of the first hmge body 301 (e.g., the male member 416 of the first hinge body 401 is configured to mate with the female feature 417 defined in the second hinge body 402). In the illustrated embodiment, the male member 416 of the first hinge body 401 has a trapezoidal prismatic shape and the female feature 417 defined in the interface surface 415 of the second hinge body 402 has a corresponding trapezoidal prismatic shape. The male member 416 of the first hinge body 401 may be configured to be received in the female feature 417 in the second hinge body 402 with a press fit (i.e., a friction fit), a clearance fit, or a location fit connection. Although in the illustrated embodiment the first hinge body 401 includes the male member 416 and the second hinge body 402 includes the corresponding female feature 417, in one or more embodiments, the first hinge body 401 may include the female feature 417 and the second hinge body 402 may include the male member 416. In one or more embodiments, the male member 416 may be integral with the first hinge body 401. In one or more embodiments, the male member 416 may be separately formed from the first hinge body 401 and may be coupled to the first hinge body 401 by any suitable process. For instance, in one or more embodiments, the interface surface 414 of the first hinge body 401 may define a receptacle (e.g., a slot) configured to receive a portion of the male member 416. In the same or substantially the same manner as described above, the engagement between the male member 416 and the corresponding female feature 417 when the first and second hinge bodies 401, 402 are brought together is configured to prevent the first hinge body 401 from rotationally separating from the second hinge body 402,

[0051 ] With reference now to FIG. 8, a hinge 500 according to one embodiment of the present disclosure includes a first hinge body 501 and a second hinge body 502 configured to be detachable coupled to the first hinge body 501. Each hinge body 501, 502 includes an arm 503, 504 having a proximal end 505, 506 and a distal end 507, 508 and a connection member 509, 510 extending from the distal end 507, 508 of the arm 503, 504. Additionally, each connection member 509, 51 defines a notch 511, 512. Together, the notches 511, 512 in the first and second hinge bodies 501, 502 define an opening 513 having a non-circular cross-sectional shape. The configuration of the arms 503, 504, the connection members 509, 510, and the notches 511, 512 defined by the connection members 509, 510 may be the same or similar to any of the configurations of the arms 124, 125, the connection members 130, 131, and the notches 135, 136 described above with reference to embodiment of the hinge 111 illustrated in FIGS. 1A-3B.

[0052] Additionally, in the illustrated embodiment, each of the arms 503, 504 defines an interface surface 514, 515, respectively. The interface surface 514 of the first hinge body 501 is configured to abut (e.g., contact or engage) the interface surface 515 of the second hinge body 502 when the hinge bodies 501, 502 are coupled together to form the hinge 500. In the illustrated embodiment, the first hinge body 501 includes a first male member 516 (e.g., a first projection) extending from the interface surface 514 of the first hinge body 501 and the second hinge body 502 defines a corresponding first female feature 517 (e.g., a first recess) in the interface surface 515 of the second hinge body 502. Additionally, in the illustrated embodiment, the second hinge body 502 includes a second male member 518 (e.g., a second projection) and the first hinge body 501 defines a corresponding second female feature 519 (e.g., a second recess). The first female feature 517 in the second hinge body 502 is configured to receive at least a portion of the first male member 516 of the first hinge body 501 and the second female feature 519 in the first hinge body 501 is configured to receive at least a portion of the second male member 518 of the second hinge body 502 when the first and second hinge bodies 501, 502 are coupled together (e.g., the first male member 516 of the first hinge body 501 is configured to mate with the first female feature 517 defined in the second hinge body 502 and the second male member 518 of the second hinge body 502 is configured to mate with the second female feature 519 defined in the first hinge body 501). In the illustrated embodiment, the first and second male members 516, 518 have a cylindrical shape and the first and second female features 517, 519 have corresponding cylindrical shapes. In one or more embodiments, the first and second male members 516, 518 and the first and second female features 517, 519 may have any other suitable shapes, such as, for instance, prismatic shapes (e.g., a rectangular prismatic shape (see FIG. 5) or a trapezoidal prismatic shape (see FIG. 7)) or any other suitable non-prismatic shapes (e.g., a semi-cylindrical shape (see FIG. 6)). The first and second male members 516, 518 may be configured to be received in the first and second female features 517, 519, respectively, with a press fit (i.e., a friction fit), a clearance fit, a location fit, or any other suitable type of connection.

[0053] Although in the illustrated embodiment, the first and second male members 516, 518 have the same configuration (e.g., the same size and shape) and the first and second female features 517, 519 have the same configuration (e.g., the same size and shape), in one or more embodiments, the first and second male members 516, 518 may have different configurations (e.g., different sizes and/or different shapes) and the first and second female 517, 519 features may have different configurations (e.g., different sizes and/or different shapes). Additionally, although in the illustrated embodiment the hinge 500 includes two sets or pairs of male and female features 516-519, in one or more embodiments, the hinge 500 may include any other number of male members and female features, such as, for instance, three or more pairs of male members and corresponding female features. Additionally, although in illustrated embodiment the first and second male members 516, 518 and the first and second female features 517, 519 are on opposite hinge bodies 501, 502, in one or more embodiments, the first and second male members 516, 518 may be on the same hinge body and the first and second female features 516, 518 may be on the same hinge body (e.g., the first and second male members 516, 518 may be on the first hinge body 501 and the first and second female features 517, 519 may be defined in the second hinge body 502 or the first and second male members 516, 518 may be on the second hinge body 502 and the first and second female features 517, 519 may be defined in the first hmge body 501).

[0054] In one or more embodiments, the first male member 516 may be integral with the fi rst hinge body 501 and/or the second male member 518 may be integral with the second hinge body 502. In one or more embodiments, the first male member 516 may be separately formed from the first hinge body 501 and may be coupled to the first hmge body 501 by any suitable process. In one or more embodiments, the second male member 518 may be separately formed from the second hinge body 502 and may be coupled to the second hinge body 502 by any- suitable process. For instance, in one or more embodiments, the interface surface 514 of the first hinge body 501 may define a receptacle (e.g., a bore) configured to receive a portion of the first male member 516 and/or the interface surface 515 of the second hinge body 502 may define a receptacle (e.g., a bore) configured to receive a portion of the second male member 518.

[0055] In the same or substantially the same manner as described above, the engagement between the first and second male members 516, 518 and the corresponding first and second female features 517, 519 when the first and second hinge bodies 501, 502 are brought together is configured to prevent the first hinge body 501 from rotationally separating from the second hinge body 502.

[0056] With reference now to FIG. 9, a valve assembly 600 according to another embodiment of the present disclosure includes a clevis 601, a hinge 602 rotatably coupled to the clevis 601, and a disc 603 detachably coupled to the hinge 602. In the illustrated embodiment, the hinge 602 includes an arm 604 having a proximal end 605 and a distal end 606. Additionally, the hinge 602 includes a connection member 607 extending from the distal end 6Θ6 of the arm 604. The proximal end 605 of the arm 604 defines an opening 608 configured to receive a clevis pin 609 rotatably coupling the hinge 602 to the clevis 601. Additionally, in the illustrated embodiment, the connection member 607 of the hinge 601 defines an opening 610 configured to receive or accommodate a portion of the disc 603. In the illustrated embodiment, the opening 610 defined by the connection member 607 is circular.

[0057] In the illustrated embodiment, the disc 603 includes a closure portion 611 and a stem portion 612 extending from the closure portion 611. Additionally, in the illustrated embodiment, the stem portion 612 of the disc 603 is cylindrical at least a portion of the stem portion 612 includes external threads 613 extending along a length of the stem portion 612. Accordingly, in one or more embodiments, the disc 603 may be coupled to the hinge 602 by inserting the stem portion 612 of the disc 603 through the opening 608 in the hinge 601 and threading a nut 614 onto the external threads 613 of the stem portion 612.

[0058] Additionally, in the illustrated embodiment, the disc 603 includes a stop 615 projecting from a rear surface 616 of the closure portion 611 (e.g., the stop 615 and the stem portion 612 project in the same direction from the closure portion 611). In the illustrated embodiment, the stop 615 is cylindrical (e.g., pin-shaped). In one or more embodiments, the stop 615 may have any other suitable shape, such as, for instance, a prismatic shape, any other suitable non-prismatic shape, or a combination or portion thereof. The stop 615 may be located at any suitable radial position along the closure portion 611 of the disc 603, such as, for instance, at an outer radial position along a peripheiy 617 of the closure portion 611, at an inner radial position (e.g., proximate the stem portion 612), or at an intermediate radial position between the outer and inner radial positions. When the disc 603 is coupled to the hinge and the disc 603 rotates (arrow 618) (e.g., spins about a longitudinal axis L of the stem portion 612 and the closure portion 611 of the disc 603), the stop 615 is configured to contact a side 619, 620 of the hinge 602. Tire side 619, 620 of the hinge 602 that the stop 615 contacts depends on the direction in which the disc 603 rotates (arrow 618). For instance, in the illustrated embodiment, if the disc 603 rotates (arrow 618) in the clockwise direction, the stop 615 is configured to contact one side 619 of the hinge 602 and if the disc 603 rotates (arrow 618) in the counterclockwise direction, the stop 615 is configured to contact the other side 620 of the hinge 602. The contact (e.g., engagement) between the stop 615 and the hinge 602 is configured to prevent further rotation (arrow 618) of the disc 603 (i.e., the stop 615 is configured to contact the hmge 602 to limit rotation of the disc 603 relative to the hinge 602 and thereby prevent full 360 degree rotation of the disc 603). Although in the illustrated embodiment the disc 603 includes a single stop 615, in one or more embodiments, the disc 603 may include two stops to further limit rotation of the disc 603 relative to the hinge 602. For instance, in one or more embodiments, the disc 603 may include a pair of stops positioned on the closure portion 611 of the disc 603 such that when the disc 603 is coupled to the hinge 602, the stops are located on opposite sides of the hinge 602 (e.g., one stop may be proximate one side 619 of the hinge 602 and the other stop may be proximate the other side 620 of the hinge 602). In one or more embodiments, the spacing between the two stops may be equal or substantially equal to a thickness T of the hinge 602 (e.g., the distance between the sides 619, 620 of the hinge 602) to prevent all or substantially all rotation (arrow 618) of the disc 603 relative to the hinge 602. Accordingly, whereas the embodiment of the valve assembly 102 described above with reference to FIGS. 1A-4 includes a hinge 111 defining an opening 141 having a non-circular cross-sectional shape configured to receive a stem portion 156 of a disc 603 having a non- circular cross-sectional shape to limit or prevent rotation of the disc 112 relative to the hinge 111, the embodiment of the valve assembly 600 illustrated in FIG. 9 includes one or more stops 615 on the disc 603 configured to contact (e.g., engage) the hinge 602 to limit or prevent rotation (arrow 618) of the disc 603 relative to the hinge 602.

[0059] Although in the illustrated embodiment the hinge 602 is a single monolithic component, in one or more embodiments, the hinge 602 may be an assembly of two or more components configured to be detachably coupled together. For instance, in one or more embodiments, the hinge 602 may include a first hinge body and a second hinge body configured to be detachably coupled together that may be the same or similar to the embodiment of the first hinge body 122 and the second hinge body 123 described above with reference to FIGS. 1A-3B. Additionally, in one or more embodiments in which the hinge 602 includes a first hinge body and a second hinge body configured to be detachably coupled together, the disc 603 may be the same as or similar to the embodiment of the disc 112 described above with reference to FIGS. 1A-4, with the exception of the presence of the one or more stops 615. For instance, in one or more embodiments, the disc 603 may include a retention portion integral with the stem portion 612, rather than the nut 614 illustrated in FIG. 9, that is configured to maintain the disc 603 connected to the hinge 602.

[0060] While this invention has been described in detail with particular references to embodiments tliereof, the embodiments described herein are not intended to be exhaustive or to limit the scope of the invention to the exact forms disclosed. Persons skilled in the art and technology to which this invention pertains will appreciate that alterations and changes in the described structures and methods of assembly and operation can be practiced without meaningfully departing f rom the principles, spirit, and scope of this invention. One or more of the features described with reference to one embodiment may be combined with one or more other features described with reference to one or more other embodiments to provide a workable device. Although relative terms such as "outer," "inner," "upper," "lower," and similar terms have been used herein to describe a spatial relationship of one element to another, it is understood that these terms are intended to encompass different orientations of the various elements and components of the invention in addition to the orientation depicted in the figures. Additionally, as used herein, the term "substantially," "generally," and similar terms are used as terms of approximation and not as terms of degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by those of ordinary skill in the art. Furthermore, as used herein, when a component is referred to as being "on" or "coupled to" another component, it can be directly on or attached to the other component or intervening components may be present therebetween. Further, any described feature is optional and may be used in combination with one or more other features to achieve one or more benefits.