AU2021200578A1 - A plumbing fitting - Google Patents

Abstract

There is disclosed a plumbing fitting for selectively allowing the passage of a fluid therethrough. The plumbing fitting has an elongate body. The elongate body has a first open end and a second open end with a passageway providing for fluid communication between each of said first open end and said second open end. At least one of said first open end and/or said second open end has a connection arrangement for connection with a further plumbing fitting or fixture. The plumbing fitting has a valve for selectively sealing or unsealing said passageway to allow for a flow of fluid between each of said open ends. The valve is operable from the first open end or the second open end. 27 1/ 15 17 19 FIGUR E I

Description

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17 19

FIGURE I A PLUMBING FITTING

FIELDOFTHEINVENTION This invention relates to a plumbing fitting.

BACKGROUND Buildings are typically constructed by forming foundations, constructing the framing, installing plumbing and wiring, installing insulation, then lining with plasterboard to form a wall cavity. The plasterboard is plastered and decorated, for example with paint or wallpaper. The plumbing fittings, such as taps and shower fittings, are installed after the walls have been decorated. During the construction process, it is often necessary to test the plumbing to check for leaks. The testing is usually carried out before the walls are lined. As the final plumbing fittings have not yet been installed, there are a number of open pipe outlets. To allow the plumbing to be tested without water flowing out from all the outlets, a sealing plug is used to block each outlet. The sealing plugs are usually left in place during construction and removed when the final plumbing fittings are installed. The sealing plugs are a temporary system that is used while testing is being carried out.

Previously known sealing plugs include short brass caps and plugs, or short plastic caps and plugs. It is also known to provide plugs that have elongate bodies. The plugs are closed at the end to effectively block the outlets when installed. The plugs are long enough so that when one end is connected to the plumbing outlet, the other end is outside of the wall cavity after the plasterboard has been installed.

However, a problem can occur when the plug is removed. If water remains in the plumbing, when the plug is removed the water will simply flow out of the outlet in an uncontrolled manner. The water may collect in the wall cavity, damage the other wall components, or cause other damage.

SUMMARY OF THE INVENTION It is an object of at least preferred embodiments of the present invention to provide a plumbing fitting that will address the problems of the prior art, and/or to at least provide the public with a useful alternative.

In accordance with a first aspect, there is provided a plumbing fitting for selectively allowing the passage of a fluid therethrough, said plumbing fitting comprising: an elongate body comprising a first open end and a second open end, with a passageway providing for fluid communication between each of said first open end and said second open end; at least one of said first open end and/or said second open end comprises a connection arrangement for connection with a further plumbing fitting or fixture; and a valve for selectively sealing or unsealing said passageway to allow for a flow of fluid between each of said open ends, the valve being operable from the first open end or the second open end.

In an embodiment, said elongate body is of a pre-determined length.

In an embodiment, the pre-determined length is sufficient for said elongate body, when connected to a further plumbing fitting or fixture, to provide for one of said open ends to be located outside of a wall cavity or a wall cavity to be formed.

In an embodiment, when the elongate body is viewed in an axial direction between said first open end and said second open end, the exterior surface:

i. substantially circular, or

ii. is of a profile, or is of a maximum outer profile, circumscribed by an axial rotation of said elongate body that is substantially circular, or

iii. is shaped such that a maximum exterior diameter of said elongate body provided for connection with a further plumbing fitting or fixture is of substantially the same or a reduced exterior diameter with respect to a maximum exterior diameter of said elongate body adjacent to said end of said elongate body provided for the connection to the further plumbing fitting or fixture.

In an embodiment, an end of said elongate body provided for connection to a further plumbing fitting of fixture is of a reduced maximum exterior diameter with respect to the remainder of said elongate body.

In an embodiment, one of said first open end or said second open end is of a smaller maximum exterior diameter with respect to the other open end.

In an embodiment, a region of an end of said elongate body provided for connection with a further plumbing fitting or fixture has a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

In an embodiment, each end of said elongate body comprises of said region, each of said regions being of a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

In an embodiment, one end of said elongate body comprises of said region.

In an embodiment, the region is provided directly at an end and extends for a pre determined longitudinal length along said elongate body.

In an embodiment, said pre-determined longitudinal length is a length sufficient to extend from the end connected to the further plumbing fitting or fixture to a location outside or beyond of a wall cavity or a wall cavity to be formed.

In an embodiment, said elongate body comprises of one or more exterior surface recesses, said recesses spaced about or along the elongate body.

In an embodiment, one or more of said recesses extends substantially longitudinally along said elongate body.

In an embodiment, one or more of said recesses extended substantially radially about said elongate body.

In an embodiment, said one or more exterior surface recesses are positioned between each of said first open end and said second open end.

In an embodiment, said one or more exterior surface recesses are positioned away from an end which is to be connected to the further plumbing fitting or fixture.

In an embodiment, the connection arrangement for connection with a further plumbing fitting or fixture comprises a threaded member configured to attach to a plumbing fitting.

In an embodiment, a first sealing member seals the threaded member against the plumbing fitting.

In an embodiment, the first sealing member is a washer.

In an embodiment, the elongate body comprises a groove around the circumference of the first end.

In an embodiment, the first sealing member sits in the groove.

In an embodiment, the valve is located at the first end.

In an embodiment, the valve is located at the second end.

In an embodiment, the valve is located between the first end and the second end.

In an embodiment, the valve comprises a plug, and a second sealing member.

In an embodiment, the plug seals the valve and can be unsealed by a tool inserted from the first end and/or the second end.

In an embodiment, the plug comprises at least one drainage channel.

In an embodiment, the plug is a screw.

In an embodiment, the screw is receivable or engageable by a screwdriver.

In an embodiment, the second sealing member is an 0-ring.

In an embodiment, releasing the valve allows fluid in the plumbing fitting to flow from the first end to the second end.

In an embodiment, the valve is a spring valve.

In an embodiment, the valve is a lever valve.

In an embodiment, the first end comprises the connection arrangement for connection with a further plumbing fitting or fixture.

In an embodiment, the second end is an outlet end.

In an embodiment, the second end comprises a sealing washer.

37. A plumbing fitting for selectively allowing the passage of a fluid therethrough, said plumbing fitting comprising:

an elongate body comprising a first open end and a second open end, with a passageway providing for fluid communication between each of said first open end and said second open end;

at least one of said first open end and/or said second open end comprises a connection arrangement configured for rotatable connection with a further plumbing fitting or fixture;

a rotatable valve for selectively sealing or unsealing said passageway to allow for a flow of fluid between each of said open ends, wherein the rotation direction of the valve to unseal said passageway and the rotation direction of the connection arrangement to tighten the elongate body to the further plumbing fitting are the same direction.

In an embodiment, the connection arrangement is a threaded connection and the rotatable valve comprises a threaded connection.

In an embodiment, said elongate body is of a pre-determined length.

In an embodiment, the pre-determined length is sufficient for said elongate body, when connected to a further plumbing fitting or fixture, to provide for one of said open ends to be located outside of a wall cavity or a wall cavity to be formed.

In an embodiment, when the elongate body is viewed in an axial direction between said first open end and said second open end, the exterior surface:

i. substantially circular, or

ii. is of a profile, or is of a maximum outer profile, circumscribed by an axial rotation of said elongate body that is substantially circular, or

iii. is shaped such that a maximum exterior diameter of said elongate body provided for connection with a further plumbing fitting or fixture is of substantially the same or a reduced exterior diameter with respect to a maximum exterior diameter of said elongate body adjacent to said end of said elongate body provided for the connection to the further plumbing fitting or fixture.

In an embodiment, an end of said elongate body provided for connection to a further plumbing fitting of fixture is of a reduced maximum exterior diameter with respect to the remainder of said elongate body.

In an embodiment, one of said first open end or said second open end is of a smaller maximum exterior diameter with respect to the other open end.

In an embodiment, a region of an end of said elongate body provided for connection with a further plumbing fitting or fixture has a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

In an embodiment, each end of said elongate body comprises of said region, each of said regions being of a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

In an embodiment, one end of said elongate body comprises of said region.

In an embodiment, the region is provided directly at an end and extends for a pre determined longitudinal length along said elongate body.

In an embodiment, said pre-determined longitudinal length is a length sufficient to extend from the end connected to the further plumbing fitting or fixture to a location outside or beyond of a wall cavity or a wall cavity to be formed.

In an embodiment, said elongate body comprises of one or more exterior surface recesses, said recesses spaced about or along the elongate body.

In an embodiment, one or more of said recesses extends substantially longitudinally along said elongate body.

In an embodiment, one or more of said recesses extended substantially radially about said elongate body.

In an embodiment, said one or more exterior surface recesses are positioned between each of said first open end and said second open end.

In an embodiment, said one or more exterior surface recesses are positioned away from an end which is to be connected to the further plumbing fitting or fixture.

In an embodiment, a first sealing member seals the threaded member against the plumbing fitting.

In an embodiment, the first sealing member is a washer.

In an embodiment, the elongate body comprises a groove around the circumference of the first end.

In an embodiment, the first sealing member sits in the groove.

In an embodiment, the screw is located at the first end.

In an embodiment, the screw is located at the second end.

In an embodiment, the screw is located between the first end and the second end.

In an embodiment, the screw comprises a second sealing member.

In an embodiment, the screw is operable by a tool inserted from the first end and/or the second end.

In an embodiment, the screw comprises at least one drainage channel.

In an embodiment, the screw is receivable or engageable by a Philips-head screwdriver.

In an embodiment, the second sealing member is an 0-ring.

In an embodiment, releasing the valve allows fluid in the plumbing fitting to flow from the first end to the second end.

In an embodiment, the first end comprises the connection arrangement for connection with a further plumbing fitting or fixture.

In an embodiment, the second end is an outlet end.

The term 'comprising' as used in this specification and claims means 'consisting at least in part of'. When interpreting statements in this specification and claims which include the term 'comprising', other features besides the features prefaced by this term in each statement can also be present. Related terms such as 'comprise' and 'comprised' are to be interpreted in a similar manner.

It is intended that reference to a range of numbers disclosed herein (for example, 1 to 10) also incorporates reference to all rational numbers within that range (for example, 1, 1.1, 2, 3, 3.9, 4, 5, 6, 6.5, 7, 8, 9 and 10) and also any range of rational numbers within that range (for example, 2 to 8, 1.5 to 5.5 and 3.1 to 4.7) and, therefore, all sub-ranges of all ranges expressly disclosed herein are hereby expressly disclosed. These are only examples of what is specifically intended and all possible combinations of numerical values between the lowest value and the highest value enumerated are to be considered to be expressly stated in this application in a similar manner.

To those skilled in the art to which the invention relates, many changes in construction and widely differing embodiments and applications of the invention will suggest themselves without departing from the scope of the invention as defined in the appended claims. The disclosures and the descriptions herein are purely illustrative and are not intended to be in any sense limiting. Where specific integers are mentioned herein which have known equivalents in the art to which this invention relates, such known equivalents are deemed to be incorporated herein as if individually set forth.

As used herein the term '(s)' following a noun means the plural and/or singular form of that noun.

As used herein the term 'and/or' means 'and' or'or', or where the context allows both.

The invention consists in the foregoing and also envisages constructions of which the following gives examples only.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described by way of example only and with reference to the accompanying drawings.

Figure 1 is a perspective view from the side of a first embodiment of a plumbing fitting attached to a further plumbing fitting.

Figure 2 is a cross-sectional view of another embodiment of the plumbing fitting before being attached to the further plumbing fitting.

Figure 3 is a cross-sectional view of the plumbing fitting of figure 2 attached to the further plumbing fitting.

Figure 4 is a perspective view from the side of the plumbing fitting of figure 1.

Figure 5 is a perspective view from the outlet end of the plumbing fitting of figure 1.

Figure 6 is an end view from the outlet end of the plumbing fitting of figure 1.

Figures 7 to 9 are assembled, partially exploded view, and fully exploded perspective views of the plumbing fitting of figure 1.

Figures 10 to 12 assembled, partially exploded view, and fully exploded cross sectional views of the plumbing fitting of figure 1.

Figure 13 is a cross-sectional view of the elongate body of the plumbing fitting of figure 2.

Figure 14 is a cross-sectional view of the elongate body of the plumbing fitting of figure 1.

Figure 15 is a cross-sectional perspective view of the elongate body of the plumbing fitting of figure 1.

Figure 16 is a perspective view of the plug of the plumbing fitting of figure 1.

Figure 17 is a top view of the plug of figure 16.

Figure 18 is a side view of the plug of figure 16.

Figure 19 is a bottom view of the plug of figure 16.

Figure 20 is a side view of another embodiment of the plumbing fitting.

Figure 21 is a cross section of the plumbing fitting of figure 20.

Figure 22 is a perspective cross section view from the inlet end of the plumbing fitting of figure 20.

Figure 23 is a perspective cross section view from the outlet end of the plumbing fitting of figure 20.

Figure 24 is a side view of another embodiment of the plumbing fitting.

Figure 25 is a cross section of the plumbing fitting of figure 24.

Figure 26 is a perspective cross section view from the inlet end of the plumbing fitting of figure 24.

Figure 27 is a perspective cross section view from the outlet end of the plumbing fitting of figure 24.

Figure 28 is a side view of another embodiment of the plumbing fitting.

Figure 29 is a cross section of the plumbing fitting of figure 28.

Figure 30 is a perspective cross section view from the inlet end of the plumbing fitting of figure 28.

Figure 31 is a perspective cross section view from the outlet end of the plumbing fitting of figure 28.

DETAILED DESCRIPTIONOFAPREFERRED EMBODIMENT With reference to figures 1 and 4 to 19, a first preferred embodiment of a plumbing fitting 1 will now be described. Figure 1 shows the plumbing fitting 1 connected to a further plumbing fitting 1000. The further plumbing fitting 1000 shown in figures 1 to 3 is a conventional 90° elbow fitting with an internally threaded outlet (shown in figures 2 and 3). The first embodiment of the plumbing fitting 1 described herein may also be used with any other suitable plumbing fitting, coupling or fixture with an outlet having an internally threaded outlet, such as a tee fitting, a 450 elbow, or a wye fitting.

The plumbing fitting 1 is configured to manage the flow of fluids through the passageway 1009 of the elbow 1000. In particular, the plumbing fitting 1 blocks the outlet 1007 of the elbow 100 and prevents fluid from leaving the elbow 1000 through its outlet 1007. In addition to blocking the outlet of the elbow 1000, the plumbing fitting 1 selectively allows the passage of a fluid therethrough. This allows water to flow from the elbow 1000 and through the plumbing fitting 1 when required, while the plumbing fitting 2 remains in place. As a result, when the plumbing fitting 1 is eventually removed and the final desired plumbing fittings are installed, there will be no water remaining in the pipework that can flow out of the elbow 1000 and damage the wall and/or the surroundings. As will be described in more detail below, the plumbing fitting 1 is installed manually, that is, the plumbing fitting 2 is hand tightened. The plumbing fitting 2 is also removed manually.

Figures 4 to 11 and 15 show many of the features of the plumbing fitting 1. The plumbing fitting 1 has an elongate body 3 with a first open end 5, a second open end 7 and a passageway 9 between the first open end 5 and the second open end 7. The plumbing fitting 1 has a connection arrangement 11 for connection with the elbow 1000. The plumbing fitting also has a valve 13 for selectively sealing or unsealing the passageway 9 to allow for a flow of fluid between each of said open ends. The valve 13 is operable from the first open end 5 or second open end 7, which is described in more detail below, and selectively allows the passage of fluid through the plumbing fitting.

In the following description, the first open end 5 is the inlet end, which is connected to the elbow 1000 by the connection arrangement 11, and the second open end 7 is the outlet end. However, it will be appreciated that in some contexts, the second end may be the inlet end and the first end may be the outlet end.

With reference to figures 1 to 11, various features of the elongate body 3 will now be described. The elongate body 3 is of a pre-determined length. The length may be about 70 mm to about 250 mm. For example, the length may be about 80 mm, about 90 mm, about 100 mm, about 110 mm, about 120 mm, about 130 mm, about 140 mm, about 150mm, about 160 mm, about 170 mm, about 180 mm, about 190 mm, about 200 mm, about 210 mm, about 220 mm, about 230 mm, or about 240 mm. The length is chosen based on conventional dimensions and spacing of a wall cavity of a typical building construction together with sufficient length for a user to grip the portion of the plumbing fitting extending out from the wall. In particular, the length is related to the typical distance between the piping (together with the further plumbing fitting connected to the piping) and the exterior of plasterboard or dry wall of the wall being built. When installed and connected to the further plumbing fitting 1000 at the inlet end, the outlet end of the elongate body 3 is located outside of the wall cavity. The other predetermined lengths are based on typical building constructions dimensions. For bespoke constructions having non-traditional dimensions, it will be appreciated that the plumber, builder or construction worker can use a plumbing fitting 1 having relatively longer lengths, which will ensure that the outlet end of the elongate body 3 is located outside of the wall cavity.

In addition to the elongate body 3 having a predetermined length, the elongate body 3 has a main smooth region 15 that also has a predetermined length along the elongate body 3. The smooth surface 15 provides a smooth round surface for plastering up to. That is, any plaster that is applied to the plasterboard contacts the main smooth region 15 and not the other portions of the plumbing fitting 1. The main smooth region 15 is a region that has a substantially smooth exterior surface, or a substantially uninterrupted exterior surface. In addition, the main surface is cylindrical. As shown in figure 4, only the inlet end of the elongate body 3 comprises of the main smooth region 15.

The main portion 15 is the part of the plumbing fitting 1 that abuts or engages the plasterboard of the wall being built. Again, the predetermined length is related to conventional dimensions and spacing of a wall cavity of a typical building construction. The pre-determined longitudinal length of the main smooth region 15 is a length sufficient to extend from the end connected to the further plumbing fitting or fixture to a location outside or beyond of a wall cavity or a wall cavity to be formed. In particular, the length of the main smooth region 15 is chosen based on the typical distance between the piping and the plasterboard of the wall being built such that the wall contacts the main smooth region 15 and any plaster that is applied to the plasterboard contacts the main smooth region 15 and not the other portions of the plumbing fitting 1. The predetermined length also allows for part of the main smooth region 15 to extend beyond the wall when installed and connected to the further plumbing fitting. The length of the main smooth region 15 is about 40 mm. The length of the main smooth region 15 may also be of any other pre determined lengths, such as about 25 mm, about 30 mm, about 35 mm, about 45 mm, about 50 mm, or about 55 mm. The other predetermined lengths are based on typical building constructions dimensions. In addition to being smooth, the main portion 15 has a substantially circular profile along its length. The diameter of the elongate body 3 remains constant along that main portion 15.

The exterior surface of the elongate body 3 is shaped such that when the plumbing fitting is removed from the elbow, there would be minimal damage, preferably no damage, to any surrounding plaster or wall. As shown in figure 6, when the elongate body 3 is viewed in an axial direction between the first open end and the second open end, the main smooth region 15 is substantially circular.

With reference to figures 4 to 9, the section adjacent to the main smooth region 15 is of a maximum outer profile, circumscribed by an axial rotation of said elongate body 3 that is substantially circular. This section may have a profile of any shape along its length provided the maximum outer profile is within the circumscribed area. As a result, when the plumbing fitting 1 is removed by rotating, because there are no features of the plumbing fitting 1 that extend outwardly beyond the circumscribed area, the plumbing fitting 1 will not strike the plasterboard or plaster.

The elongate body 3 has a plurality of exterior surface recesses 17. The recesses 17 are spaced about or along the elongate body 3. In the embodiment shown, the recesses 17 extend substantially longitudinally along the elongate body 3. The recesses 17 are also positioned away from the inlet end. There is a plurality of ridges adjacent the recesses - there is one ridge between a pair of adjacent recesses 17. The ridges and recesses provide a shaped surface that can be grasped by a user to manually attach or detach the plumbing fitting 1 from the elbow 1000.

That is, the recesses provide a handle region 16. The length of the handle region is about 60 mm. The length of the handle region 16 may also be of any other pre determined lengths, such as about 40 mm, about 50 mm, about 70 mm, about 80 mm, or about 90 mm. When viewed axially, the outer surface of the ridges 19 do not extend beyond the smooth region 15. Further, the outer surface 21 of each ridge 19 is curved such that each ridge 19 is flush with the smooth region 15.

With reference to figure 4, the connection arrangement 11 is located at the inlet end 5 of the elongate body 3. The connection arrangement 11 extends outwardly from the adjacent main portion of the elongate body 3 and forms the terminal end of the elongate body. A maximum exterior diameter of the connection arrangement 11 is of substantially the same or a reduced exterior diameter with respect to a maximum exterior diameter of said elongate body 3 adjacent to said end of said elongate body. Figures 4 to 11 show the connection arrangement 11 has a smaller external diameter than the adjacent section of the elongate body 3. When the plumbing fitting 1 is connected to the elbow 1000, the connection arrangement 11 is located within the passageway of the elbow 1000 while the remainder of the plumbing fitting 1 extends outwardly from the elbow 1000. Consequently, when the plumbing fitting 1 is assembled with the elbow 1000, the main smooth region 15 is substantially flush with the body of the elbow 1000. The connection arrangement 11 is an externally threaded section of the elongate body 3. The connection arrangement is configured to engage with an internally threaded section 1011 of the elbow, shown most clearly in figure 2. Figures 4 to 12 show the connection arrangement is integral with the elongate body 3.

Figures 10 to 12 show the plumbing fitting 1 with a first sealing member 23. The first sealing member 23 seals the threaded member against the elbow 1000. In the embodiment shown, the first sealing member 23 is a washer. The washer 23 is received by a recess or groove 25, shown most clearly in figures 14 and 15. The groove 25 is a flat groove when viewed in cross-section as in figure 15. That is the surface on which the washer sits has a constant diameter. As described in more detail below in relation to the embodiment shown in figures 2 and 3, the washer 23 is pressed and reshaped when the plumbing fitting is installed on the elbow.

As mentioned above, the plumbing fitting 1 also includes a valve for selectively sealing or unsealing the passageway 9. With reference to figure 10, the valve comprises a plug in the form of a screw 13. As can been seen most clearly in figures 7 and 10, the screw 13 is located at the end of the passageway 9.

The inlet 5 has a complementary internally threaded section. The screw 13 has a head 29 and a threaded shank 31. Both the head 29 and the end ofthe shank 31 have a shaped recess 35, 37 for receiving a tool. The two recesses 35, 37 allow the valve to be operated from either end of the plumbing fitting 1. That is, the recess 37 in the head 29 allows the valve to be operated from the inlet end and the recess 35 in the shank 31 allow the valve to be operated from the outlet end of the plumbing fitting. In the embodiment shown, both shaped recesses 35, 37 are shaped to receive a tool. The tool can be used to rotate the screw, which then moves longitudinally relative to the elongate body 3 to selectively open or close the passageway 9.

To unseal the passageway 9, the screw 13 accessed from the second open end 7 by a tool and is rotated clockwise relative to the elongate body 3. The rotation direction of the screw 13 to unseal the passageway 9 and the rotation direction of the connection arrangement 11 are the same direction. As a result, if the screw 13 seizes, even temporarily, when the screw 13 is being unsealed, the rotational movement of the screw 13 will transfer to the elongate body 3 and will tighten the plumbing fitting 1 onto the elbow 1000. Unsealing the screw 13 will not cause the plumbing fitting to loosen from the elbow 1000.

The shaped recesses 35, 37 are configured to receive a Philips screwdriver. The recesses may be other shapes, such slotted, cruciform, polygon or hexalobular type screw drive. The recesses may be shaped to receive a screwdriver or that shaft of a socket set. The recess 37 in the head 29 may be the same as the recess 35 shape in the shank 31, or they may be different shapes. Figures 10 and 11 show the recesses 35, 37 are the same size. Alternatively, the recesses 35, 37 may be different sizes, for example, the recess 37 in the head 29 may be larger than the recess 35 in the shank 31.

The plumbing fitting 1 has a second sealing member or a valve sealing member 39, which is associated with the screw 13. The second sealing member 39 is an 0-ring, which is received by a groove 24 (figure 10) in the inlet and a groove 40 (figure 11) in the screw 13. The second sealing member 39 substantially seals the screw 13 and the inlet 5 when the valve is closed. The second sealing member may be any other type of sealing component such as a wiper seal or gasket that fits between the plug and the passageway 9 of the elongate device. In an alternative embodiment, neither the exterior surface of the screw nor the interior surface of the inlet has a groove and the plumbing fitting does not have a seal. Rather, the exterior surface of the screw has the same taper as the interior surface of the inlet. Further, both surfaces may have a uniform taper. When the screw is completely closed, the contact between the exterior surface of the screw and the internal surface of the inlet will be mating surfaces that seal and a separate seal component is not required.

With reference to figures 16 to 19, the screw comprises at least one drainage channel 33 to allow for the flow of fluid between each of the open ends of the elongate body 3 when the plug is partially unsealed. Figure 19 shows the plug has two drainage channels 33.

When the screw 13 is closed (figure 10), fluid is prevented, or at least substantially inhibited, from entering the passageway 9 because the screw 18 blocks the outlet of the further plumbing fitting 100. When the screw 13 is open (figure 11), or partially open, fluid is allowed to flow or drain from the outlet of the further plumbing fitting 100, through the inlet 5, through one or both drainage channels 33, then along the passageway 9 and out the outlet 7. In an alternative embodiment, the screw may not have a drainage channel in the form shown in the drawings. Rather, the water may travel along the screw thread. It will be appreciated that having drainage channels as shown in the figures will allow a greater amount of water to flow through the plumbing fitting compared to an embodiment in which the water travels along the screw thread.

The screw 13 can be operated (sealed or unsealed) from the first end 5 of the elongate body 3 if the connection arrangement at the first end 5 is not connected to the elbow 1000. This means that any adjustments to the screw 13 from the first end 5 of the elongate body 3 are required to occur before or after connecting the elongate body 3 to the elbow 1000. When the connection arrangement 11 at the first end is connected to the elbow 1000, the screw 13 can only be adjusted from the second end 7 of the elongate body 3.

In use, the screw 13 is operated from the inlet end 5 to ensure it is closed. The plumbing fitting can then be attached to the elbow as shown in figure 1. When testing is required, the plumbing fitting will block water from leaving the elbow 1000. After testing has finished, the screw 13 can be operated from the outlet end, allowing water to flow from the elbow 1000, along the drainage passages 33 in the screw 13, along the passageway 9 and out the open outlet 7.

Also, after the wall has been completed, the plumbing fitting can be removed by a user manually rotating the plumbing fitting. As previously described, the smooth region 15 allows any plaster to be formed right up against that region. When the plumbing fitting is removed from the elbow the smooth region 15 of the elongate body 3 helps to avoid disrupting the plaster, or at least substantially minimise disruption or damage to the plaster. That is because there is no textured surface or other protrusions that the plaster would adhere to.

With reference to figure 12, the valve may take other suitable forms such as a spring valve, a poppet valve, a non-return valve, a check valve, or a lever valve.

Figures 2, 3 and 13 show another exemplary form of the plumbing fitting. Unless described below, the features and functions of this embodiment are the same as the first embodiment shown and described above in relation to figure 1. Like numbers are used to indicated like parts with the addition of ' after each reference numeral. In this embodiment, the plumbing fitting 1' has a plurality of recesses 51'. The recesses 51' are driving dogs that used during the manufacturing process. The plumbing fitting 1, 1' is made in a mould with a threaded core that forms the internally threaded section of the inlet 5, 5'. When the mould opens, the threaded core unscrews by rotating relative to the mould. The driving dogs 51' are used during the moulding process to stop the elongate body 3 from rotating relative to the mould when the threaded core is being removed.

Figure 2 shows the plumbing fitting 1' before being attached to the elbow and figure 3 shows the plumbing fitting 1' attached to the elbow. In figure 3, it can be seen that the washer 23' is pressed and reshaped between the elongate body 3' and the face 1025 of the elbow when the plumbing fitting 1' is attached to the elbow 1000. The washer 23' is fully entrapped. Figure 3 shows the washer 23' is deformed by extending outwardly towards the angled face 26' of the groove 25'. The angled face 26' prevents the washer 23' from extending beyond the perimeter of the elongate body 3'. In addition to extending outwardly when pressed, the depth of the washer 23' reduces. In addition, the washer 23' takes on the shape of the end of the plumbing fitting. The washers 23, 123, 223, and 323 of the other embodiments described herein have the same features and functions as the washer 23'.

Figures 20 to 23 show another exemplary form of the plumbing fitting. Unless described below, the features and functions of this embodiment are the same as the embodiment shown and described above in relation to figure 1. Like numbers are used to indicated like parts with the addition of 100.

In this embodiment, each of the first end and the second end has a connection arrangement. A first connection arrangement 111 has the same form and function as the connection arrangement of the first embodiment described above. The second connection arrangement 141 has an internal thread. Each of the two connection arrangements includes a first sealing member 123, 143. The two connection arrangements 111, 141 allow either end of the elongate member to be the inlet end with the other end as the outlet end. The second connection arrangement 141 can receive an external threaded outlet of any other suitable plumbing fitting, coupling or fixture. That is, this embodiment of the plumbing fitting can be used with either a plumbing fitting with external threads (a male plumbing fitting) or a plumbing fitting with internal threads (a female plumbing fitting).

In addition, if required, the connection arrangements allow multiple plumbing fittings to connect to each other serially. The second connection arrangement 141 with the internal thread can receive the first connection arrangement 111 of an additional plumbing fitting 1.

In this embodiment, the valve is in the form of a grub screw 113. As the valve is a grub screw 113, the valve may be located inwardly from the inlet 105. The grub screw 113 has a threaded portion and an unthreaded or smooth portion. Both ends of the grub screw have a shaped recess for receiving a tool. The grub screw 113 has two second sealing members 139a, 139b between the grub screw 113 and the passageway 109. In an alternative configuration, there may be only one second sealing member or more than two second sealing members. The sealing members may be O-rings, as shown in figure 21, or may be wiper seals or gaskets.

Figures 24 to 27 show another exemplary form of the plumbing fitting. Unless described below, the features and functions of this embodiment are the same as the first embodiment described above. Like numbers are used to indicated like parts with the addition of 200.

In this embodiment, there is a connection arrangement 211 at the inlet end 205. The outlet end does not have a connection arrangement. The valve is a grub screw 213, similar to the valve of the embodiment shown and described in relation to figures 20 to 23. The grub screw 213 is only insertable into the passageway 209 from the outlet end 207 of the elongate body 203.

Figures 28 to 31 show another exemplary form of the plumbing fitting. Unless described below, the features and functions of this embodiment are the same as the first embodiment described above. Like numbers are used to indicated like parts with the addition of 300.

In this embodiment, there is a connection arrangement 311 at the inlet end 305. The outlet end does not have a connection arrangement. The valve is a grub screw 313, similar to the valve of the embodiment shown and described in relation to figures 20 to 23 and the embodiment shown and described in relation to figures 24 to 27. In this embodiment, the grub screw 313 is only engageable from the side facing the outlet end 307 of the elongate body 303. The grub screw 313 is only insertable into the passageway 309 from the outlet end 307 of the elongate body 303.

Preferred embodiments of the invention have been described by way of example only and modifications may be made thereto without departing from the scope of the invention.

For example, the plumbing fitting has been shown and described as having a plurality of recesses. In an alternative embodiment, the plumbing fitting may have a single recess.

Each of the embodiments of the plumbing fitting may have different connection arrangements to those described above. In some configurations, both ends may have a connection arrangement with external threads, both ends may have a connection arrangement with internal threads, only one end may have an internal thread, or only one end may have an external thread.

The embodiments described herein have a substantially smooth exterior surface at one end of the elongate body 3. In other configurations, each end of the elongate body may have a substantially smooth exterior surface, or a substantially uninterrupted exterior surface. This means that both the first end and the second end of the elongate body may have smooth regions that have a substantially smooth exterior surface or a substantially uninterrupted exterior.

The plumbing fitting may be provided with a variety of different connection arrangements. Either ends of the elongate body may be used as the inlet or outlet. Both ends of the elongate body may be connected to a further plumbing fitting each or only one end of the elongate body is connected to a further plumbing fitting. The end with the connection arrangement with internal threads may be used to connect to a further plumbing fitting or fixture with external threads. The end with the external threads may be used to connect to a further plumbing fitting or fixture with internal threads. In other words, the elongate body has connection arrangements that can accommodate for both female and male connections.

Claims (68)

1. A plumbing fitting for selectively allowing the passage of a fluid therethrough, said plumbing fitting comprising:

an elongate body comprising a first open end and a second open end, with a passageway providing for fluid communication between each of said first open end and said second open end;

at least one of said first open end and/or said second open end comprises a connection arrangement for connection with a further plumbing fitting or fixture; and

a valve for selectively sealing or unsealing said passageway to allow for a flow of fluid between each of said open ends, the valve being operable from the first open end or the second open end.

2. The fitting as claimed in claim 1, wherein said elongate body is of a pre determined length.

3. The fitting as claimed in claim 2, wherein the pre-determined length is sufficient for said elongate body, when connected to a further plumbing fitting or fixture, to provide for one of said open ends to be located outside of a wall cavity or a wall cavity to be formed.

4. The fitting as claimed in any one of the preceding claims, wherein when the elongate body is viewed in an axial direction between said first open end and said second open end, the exterior surface:

i. substantially circular, or

ii. is of a profile, or is of a maximum outer profile, circumscribed by an axial rotation of said elongate body that is substantially circular, or

iii. is shaped such that a maximum exterior diameter of said elongate body provided for connection with a further plumbing fitting or fixture is of substantially the same or a reduced exterior diameter with respect to a maximum exterior diameter of said elongate body adjacent to said end of said elongate body provided for the connection to the further plumbing fitting or fixture.

5. The fitting as claimed in any one of the preceding claims, wherein an end of said elongate body provided for connection to a further plumbing fitting of fixture is of a reduced maximum exterior diameter with respect to the remainder of said elongate body.

6. The fitting as claimed in any one of the preceding claims, wherein one of said first open end or said second open end is of a smaller maximum exterior diameter with respect to the other open end.

7. The fitting as claimed in any one of the preceding claims, wherein a region of an end of said elongate body provided for connection with a further plumbing fitting or fixture has a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

8. The fitting as claimed in claim 7, wherein each end of said elongate body comprises of said region, each of said regions being of a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

9. The fitting as claimed in claim 7, wherein one end of said elongate body comprises of said region.

10. The fitting as claimed in any one of claims 7 to 9, wherein the region is provided directly at an end and extends for a pre-determined longitudinal length along said elongate body.

11.The fitting as claimed in claim 10, wherein said pre-determined longitudinal length is a length sufficient to extend from the end connected to the further plumbing fitting or fixture to a location outside or beyond of a wall cavity or a wall cavity to be formed.

12.The fitting as claimed in any one of the preceding claims, wherein said elongate body comprises of one or more exterior surface recesses, said recesses spaced about or along the elongate body.

13.The fitting as claimed in claim 12, wherein one or more of said recesses extends substantially longitudinally along said elongate body.

14.The fitting as claimed in claim 12, wherein one or more of said recesses extended substantially radially about said elongate body.

15. The fitting as claimed in any one of claims 12 to 14, wherein said one or more exterior surface recesses are positioned between each of said first open end and said second open end.

16. The fitting as claimed in any one of claims 12 to 15, wherein said one or more exterior surface recesses are positioned away from an end which is to be connected to the further plumbing fitting or fixture.

17.The fitting as claimed in any one of the preceding claims, wherein the connection arrangement for connection with a further plumbing fitting or fixture comprises a threaded member configured to attach to a plumbing fitting.

18. The fitting as claimed in claim 17, wherein a first sealing member seals the threaded member against the plumbing fitting.

19. The fitting as claimed in claim 18, wherein the first sealing member is a washer.

20.The fitting as claimed in any one of the preceding claims, wherein the elongate body comprises a groove around the circumference of the first end.

21. The fitting as claimed in claim 20, wherein the first sealing member sits in the groove.

22.The fitting as claimed in any one of the preceding claims, wherein the valve is located at the first end.

23. The fitting as claimed in any one of claims 1 to 21, wherein the valve is located at the second end.

24. The fitting as claimed in any one of claims 1 to 21, wherein the valve is located between the first end and the second end.

25.The fitting as claimed in any one of the preceding claims, wherein the valve comprises a plug, and a second sealing member.

26.The fitting as claimed in claim 25, wherein the plug seals the valve and can be unsealed by a tool inserted from the first end and/or the second end.

27.The fitting as claimed in claim 25 or 26, wherein the plug comprises at least one drainage channel.

28.The fitting as claimed in any one of claims 25 to 27, wherein the plug is a screw.

29. The fitting as claimed in claim 28, wherein the screw is receivable or engageable by a screwdriver.

30.The fitting as claimed in any one of claims 25 to 29, wherein the second sealing member is an 0-ring.

31.The fitting as claimed in any one of the preceding claims, wherein releasing the valve allows fluid in the plumbing fitting to flow from the first end to the second end.

32. The fitting as claimed in any one of claims 1 to 24, wherein the valve is a spring valve.

33. The fitting as claimed in any one of claims 1 to 24, wherein the valve is a lever valve.

34. The fitting as claimed in any one of the preceding claims, wherein the first end comprises the connection arrangement for connection with a further plumbing fitting or fixture.

35. The fitting as claimed in any one of the preceding claims, wherein the second end is an outlet end.

36.The fitting as claimed in claim 35, wherein the second end comprises a sealing washer.

37. A plumbing fitting for selectively allowing the passage of a fluid therethrough, said plumbing fitting comprising:

an elongate body comprising a first open end and a second open end, with a passageway providing for fluid communication between each of said first open end and said second open end;

at least one of said first open end and/or said second open end comprises a connection arrangement configured for rotatable connection with a further plumbing fitting or fixture; a rotatable valve for selectively sealing or unsealing said passageway to allow for a flow of fluid between each of said open ends, wherein the rotation direction of the valve to unseal said passageway and the rotation direction of the connection arrangement to tighten the elongate body to the further plumbing fitting are the same direction.

38. The fitting as claimed in claim 37, wherein the connection arrangement is a threaded connection and the rotatable valve comprises a threaded connection.

39. The fitting as claimed in claim 37 or 38, wherein said elongate body is of a pre-determined length.

40.The fitting as claimed in claim 39, wherein the pre-determined length is sufficient for said elongate body, when connected to a further plumbing fitting or fixture, to provide for one of said open ends to be located outside of a wall cavity or a wall cavity to be formed.

41. The fitting as claimed in any one of claims 37 to 40, wherein when the elongate body is viewed in an axial direction between said first open end and said second open end, the exterior surface:

i. substantially circular, or

ii. is of a profile, or is of a maximum outer profile, circumscribed by an axial rotation of said elongate body that is substantially circular, or

iii. is shaped such that a maximum exterior diameter of said elongate body provided for connection with a further plumbing fitting or fixture is of substantially the same or a reduced exterior diameter with respect to a maximum exterior diameter of said elongate body adjacent to said end of said elongate body provided for the connection to the further plumbing fitting or fixture.

42. The fitting as claimed in any one of claims 37 to 41, wherein an end of said elongate body provided for connection to a further plumbing fitting of fixture is of a reduced maximum exterior diameter with respect to the remainder of said elongate body.

43. The fitting as claimed in any one of claims 37 to 42, wherein one of said first open end or said second open end is of a smaller maximum exterior diameter with respect to the other open end.

44. The fitting as claimed in any one of claims 37 to 43, wherein a region of an end of said elongate body provided for connection with a further plumbing fitting or fixture has a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

45. The fitting as claimed in claim 44, wherein each end of said elongate body comprises of said region, each of said regions being of a substantially smooth exterior surface, or a substantially uninterrupted exterior surface.

46.The fitting as claimed in claim 44, wherein one end of said elongate body comprises of said region.

47. The fitting as claimed in any one of claims 44 to 46, wherein the region is provided directly at an end and extends for a pre-determined longitudinal length along said elongate body.

48.The fitting as claimed in claim 47, wherein said pre-determined longitudinal length is a length sufficient to extend from the end connected to the further plumbing fitting or fixture to a location outside or beyond of a wall cavity or a wall cavity to be formed.

49. The fitting as claimed in any one of claims 37 to 48, wherein said elongate body comprises of one or more exterior surface recesses, said recesses spaced about or along the elongate body.

50.The fitting as claimed in claim 49, wherein one or more of said recesses extends substantially longitudinally along said elongate body.

51.The fitting as claimed in claim 49, wherein one or more of said recesses extended substantially radially about said elongate body.

52. The fitting as claimed in any one of claims 49 to 51, wherein said one or more exterior surface recesses are positioned between each of said first open end and said second open end.

53. The fitting as claimed in any one of claims 49 to 52, wherein said one or more exterior surface recesses are positioned away from an end which is to be connected to the further plumbing fitting or fixture.

54. The fitting as claimed in any one of claims 49 to 53, wherein a first sealing member seals the threaded member against the plumbing fitting.

55. The fitting as claimed in claim 54, wherein the first sealing member is a washer.

56. The fitting as claimed in any one of claims 49 to 55, wherein the elongate body comprises a groove around the circumference of the first end.

57. The fitting as claimed in claim 56, wherein the first sealing member sits in the groove.

58. The fitting as claimed in any one of claims 49 to 57, wherein the screw is located at the first end.

59. The fitting as claimed in any one of claims 49 to 57, wherein the screw is located at the second end.

60. The fitting as claimed in any one of claims 49 to 57, wherein the screw is located between the first end and the second end.

61.The fitting as claimed in any one of claims 49 to 60, wherein the screw comprises a second sealing member.

62.The fitting as claimed in any one of claims 49 to 61, wherein the screw is operable by a tool inserted from the first end and/or the second end.

63. The fitting as claimed in any one of claims 49 to 62, wherein the screw comprises at least one drainage channel.

64.The fitting as claimed in any one of claims 49 to 63, wherein the screw is receivable or engageable by a Philips-head screwdriver.

65.The fitting as claimed in any one of claims 61 to 64, wherein the second sealing member is an 0-ring.

66. The fitting as claimed in any one of claims 49 to 65, wherein releasing the valve allows fluid in the plumbing fitting to flow from the first end to the second end.

67. The fitting as claimed in any one of claims 49 to 66, wherein the first end comprises the connection arrangement for connection with a further plumbing fitting or fixture.

68. The fitting as claimed in any one of claims 49 to 67, wherein the second end is an outlet end.

1 / 15 29 Jan 2021 2021200578

1000 15 1 17 19

3 17 19

FIGURE 1

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1011 2021200578

1000 1025 23' 11' 1' 3' 39' 7'

- 9' -

37' 51' 35'

1009

FIGURE 2

23' 1' 1000 39' 3'

7'

- 9' -

35' 51'

FIGURE 3

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37 13 2021200578

11

15

1 3

19 19

17 17

FIGURE 4

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17 15

19 19 1 2021200578

35 3

7

19 19

FIGURE 5 21 19 19

35

19 21 21

19

21 19

FIGURE 6

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7

19 1 17 3 2021200578

11 19 FIGURE 7 13 15 37 7

19 1 17 3

19 11 5 FIGURE 8 13 15

37

7 19

1 3 17

11 19 FIGURE 9 5 39 15

13

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1

3 11 23

7 2021200578

39 -9- 37

13 35

FIGURE 10 1

11 23 5 3

40 7 37 -9-

39

FIGURE 11 1

11 23 5

24 7 -9-

FIGURE 12

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25'

11' 26' 2021200578

51'

7' - 9' -

5'

FIGURE 13

25 26 1 11 3

7

-9-

5

FIGURE 14

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19

17

7

3

15

25

9 11

5

FIGURE 15

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29 29

37 31 2021200578

35 27

35 39

33

FIGURE 17 FIGURE 116

39 27 29 31 33 33 35

33

FIGURE 19 FIGURE 18

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111 103 119 117 2021200578

107 105

FIGURE 20

111 141 143 139b 113 123 103 139a

-9-

107 135 105 119 137

FIGURE 21

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145 103

119 2021200578

107 117

139a 141 139b 113 143 109 111

135

FIGURE 22 133 137 105 111

139b 139a

117 119 105

143 103 137 145 113 135

109

107 FIGURE 23 141

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211 203 217 219 2021200578

205 207

FIGURE 24

203 213 235 211

- 209 -

237

207 239a 239b

FIGURE 25

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239a 211 239b 233 203 235 2021200578

237

209 213

FIGURE 26 207 203 207 209

235

213

211

FIGURE 27 239b 237 239a

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311 303 317 319 2021200578

FIGURE 28

323 303 313 333 311 337

- 309 -

305 307 339a 339b

FIGURE 29

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311

303

305 2021200578

323 313

333

309

339b

339a

FIGURE 30 332 307

313 303

307

337 333 339a 323 339b 311

309

FIGURE 31 305