GB2585215A

GB2585215A - Adaptor

Info

Publication number: GB2585215A
Application number: GB1909527.2A
Authority: GB
Inventors: John Henry Wilson Matthew
Original assignee: Springhill Water Services Ltd
Current assignee: Springhill Water Services Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2021-01-06
Also published as: GB201909527D0

Abstract

An adaptor 100 for connecting a top-mount control valve 300 to a filtration vessel (fig. 4, 400; fig 6, 500). The adaptor includes a control valve port 130 including a socket to receive the control valve and an inlet 111 arranged coaxially about an outlet 122 for flow communication with the valve. The adaptor also includes an outlet 112 and inlet 121 configured for flow communication with the filtration vessel, a first flow conduit 110 from the valve inlet 111 to outlet 112, and a second flow conduct 120 from the inlet 121 to the valve outlet 122. The adaptor may comprise two parts 101, 102 which are rotatable relative to each other, with the valve port on one part 101 and filtration vessel inlet 111 and outlet 121 spaced apart from each other on the other part 102. There may be a bleed hole 124 between the conduits and/or a top screen filter 126 in the valve inlet. Also claimed is a filtration system including the adaptor, filtration vessels (e.g. to be connected in series, or in parallel using a duplex valve). For use in backwashing and regenerating water filtration equipment.

Description

ADAPTOR

FIELD

[1] The present disclosure relates in general to backwashing and regenerating water filtration equipment.

[2] In particular the present disclosure relates to an adaptor for connection between a control valve and a filtration vessel.

BACKGROUND

[3] Use of a water supply (both on mains or a private water supply) may require purification prior to distribution of the water as a result of the water quality. For example, purification of water by filtration may remove suspended particulates from water taken from the private water supply. A known filtration system utilises a filtration vessel containing a filtration bed through which the water is communicated for purification. The filtration bed comprises filtration media in which particulates are entrained and so removed from the flow communicated through the filtration vessel.

[4] Examples of known filtration vessels, particularly for domestic and light industrial applications, are operated by means of a control valve attached to the filtration vessel. In particular, the control valve is situated on top of the filtration vessel and conveys water from the top of the filtration vessel to the bottom of the filtration vessel through the filtration media. After being conveyed through the filtration media, the water is communicated through a riser tube back to the control valve and subsequently distributed.

[5] Since the control valve is physically connected to the riser tube, removal of the control valve may also cause lifting of the riser tube. Lifting of the riser tube, however, may require removal of the filtration media, because otherwise the reinsertion of the riser tube into the filtration vessel would be obstructed by the presence of the filtration media therein. Accordingly, the task of replacing the control valve may become time-consuming and labour-intensive.

[6] Therefore, it is now desired to provide an adaptor for improved connection between a control valve and a filtration vessel.

SUMMARY

[7] According to the present disclosure there is provided an adaptor as set forth in the appended claims. Other features of the invention will be apparent from the dependent claims, and the description which follows.

[8] Accordingly there may be provided an adaptor (100) for connecting a top-mount control valve (300) to a filtration vessel (400, 500), comprising: a control valve port (130) comprising: a control valve socket (132) configured to receive the control valve (300), and a control valve inlet (111) and a control valve outlet (122) for flow communication with the control valve (300), the control valve inlet (111) arranged coaxially about the control valve outlet (122); and a filtration vessel outlet (112) and a filtration vessel inlet (121) configured for flow communication with the filtration vessel (400); the adaptor (100) defining: a first flow conduit (110) from the control valve inlet (111) to the filtration vessel outlet (112) to communicate flow from the control valve (300) to the filtration vessel (400, 500); and a second flow conduit (120) from the filtration vessel inlet (121) to the control valve outlet (122) to communicate flow from the filtration vessel (400, 500) to the control valve (300).

[9] The adaptor may further comprise a first filtration vessel port (141) and a second filtration vessel port (142) spaced from the first filtration vessel port (141), wherein the first filtration vessel port (141) comprises the filtration vessel outlet (112) and the second filtration vessel port (142) comprises the filtration vessel inlet (121).

[10] The first flow conduit (110) and the second flow conduit (120) may be connected by a bleed hole (124).

[11] The adaptor may further comprise a top screen filter (126) located in the control valve inlet (111).

[12] The adaptor may further comprise a first part (101) and a second part (102), wherein: the control valve port (130) is provided on the first part (101), and the control valve port (130) is rotatable relative to the second part (102).

[13] There may be provided an adaptor assembly comprising an adaptor (100) as described above, and a flow conduit (210) for making a flow connection with the filtration vessel outlet (112), wherein the flow conduit (200) comprises an air intake (212) configured to communicate ambient air into flow through the flow conduit (200).

[14] There may be provided a filtration system, comprising: an adaptor (100) as described above or the adaptor assembly as described above, and a filtration vessel (400, 500).

[15] The filtration vessel (500) of the filtration system may comprise an inlet (512) for making a fluid connection with the filtration vessel outlet of the adaptor and an outlet (521) for making a fluid connection with filtration vessel inlet of the adaptor (100); wherein the inlet (512) and the outlet (521) are spaced apart.

[16] The filtration system may comprise a plurality of filtration vessels, wherein the adaptor is configured to make flow connection with the plurality of filtration vessels in series.

[17] The filtration system may comprise: a plurality of filtration vessels, wherein the adaptor is configured to make flow connection with the plurality of filtration vessels in parallel.

[18] The filtration system may further comprise a duplex valve configured to alternate the filtration system between a first configuration and a second configuration, wherein in the first configuration a first filtration vessel is in a duty state and a second filtration vessel is in a standby state, and wherein in the second configuration the first filtration vessel is in a standby state and the second filtration vessel is in a duty state.

BRIEF DESCRIPTION OF DRAWINGS

[19] For a better understanding of the invention, and to show how example embodiments may be carried into effect, reference will now be made to the accompanying drawings in which: Figure 1 is a side view of an adaptor according to the present disclosure; Figure 2 is a cross-sectional view of the adaptor; Figure 3 is another cross-sectional view of the adaptor and a top-mount control valve; Figure 4 is a schematic view of a filtration system comprising the adaptor, the control valve and a filtration vessel; Figure 5 is a schematic view of another filtration system comprising the adaptor, the control valve and a filtration vessel; Figure 6 is a schematic view of yet another filtration system comprising the adaptor, the control valve and multiple filtration vessels; and Figure 7 is a cross-sectional view of another adaptor and a control valve. DESCRIPTION OF EMBODIMENTS [20] The present disclosure relates to an adaptor for a filtration system for the filtration of water from a mains or private water supply. The adaptor is an interfacing component which connects a control valve and a filtration vessel of the filtration system and provides flow communication therebetween.

[21] Figures 1 and 2 show an exemplary adaptor 100 for a filtration system 10 according to the present disclosure. Figure 1 is a side view of the adaptor 100 while Figure 2 is a cross-sectional view thereof The adaptor 100 is configured to interface a control valve 300 and a filtration vessel 400. The control valve 300 is a conventional top-mount control valve, which is configured to be mounted onto the filtration vessel 400. According to the present disclosure, however, the adaptor 100 is located between the control valve and the filtration vessel.

[22] The adaptor 100 is configured for connection with the control valve 300 and the filtration vessel 400 in order to, on the one hand, enable flow communication from the control valve 300 to the filtration vessel 400 and, on the other hand, enable flow communication from the filtration vessel 400 to the control valve 300. That is to say, the adaptor 100 provides two-way flow communication between the control valve 300 and the filtration vessel 400.

[23] The adaptor 100 comprises a first conduit 110 (or 'flow conduit') by means of which flow is communicated from the control valve 300 to the filtration vessel 400 The first conduit 110 comprises a first pair of openings, i.e. a first inlet 111 (or 'control valve inlet') and a first outlet 112 (or a 'control valve outlet'), to receive a flow from the control valve 300 and communicate said flow to the filtration vessel 400. That is to say, flow is received from the control valve 300 through the first inlet 111 and communicated to the filtration vessel 400 through the first outlet 112. In other words, the first inlet 111 and the first outlet 112 are provided for flow communication to the control valve 300.

[24] The adaptor 100 also comprises a second conduit 120 by means of which flow is communicated from the filtration vessel 400 to the control valve 300. Analogous to the first conduit 110, the second conduit 120 comprises a second pair of openings, i.e. second inlet 121 (or 'filtration vessel inlet') and a second outlet 122 (or 'filtration vessel outlet'). Flow is received from the filtration vessel 400 through the second inlet 121 and communicated to the control valve 300 through the second outlet 122. In other words, the second inlet 121 and the second outlet 122 are provided for flow communication to the control valve 400.

[25] The first inlet 111 of the first conduit 110 is arranged coaxially about the second outlet 122 of the second conduit 120, in accordance with known control valves. In other words, the first inlet 111 is an annular opening extending around the second outlet 122.

[26] The first conduit 110 and the second conduit 120 define separate flow passages through the adaptor 100. Flow communicated through either conduit is therefore kept separate from flow communicated through the other conduit. According to the present example, the second conduit 120 is a tubular member, such as a pipe, surrounded by the first conduit 110. Thus, although flow through the first conduit 110 surrounds flow through the second conduit 120, these flows are separated by a barrier defined by the second conduit 120.

[27] The openings 111, 112, 121, 122 of the fluid conduits 110, 120 are housed in a plurality of ports 130, 141, 142 for connection with the control valve 300 and the filtration vessel 400. The ports 130, 141, 142 of the adaptor 100 are configured to couple to corresponding ports of the control valve 300 and the filtration vessel 400, and connect the conduits 110, 120 of the adaptor to corresponding conduits of the valve 300 and the vessel 400. That is to say, by coupling the ports 130, 141, 142 of the adaptor 100 with corresponding ports of the control valve 300 and the filtration vessel 400, the inlets and outlets of the conduits 110, 120 are interfaced with corresponding outlets and inlets, respectively, of the valve 300 and vessel 400. Thus flow passages connecting the control valve 300 and the filtration vessel 400 are formed.

[28] The adaptor 100 comprises a control valve port 130 for connection with the control valve 300 of the filtration system. The control valve port 130 houses the first inlet 111 of the first conduit 110 and the second outlet 122 of the second conduit 120.

[29] The control valve port 130 is configured to couple to a pod of the control valve 300 such that the first conduit 110 and the second conduit 120 are connected to conduits of the control valve 300.

[30] The control valve port 130 comprises a control valve socket 132 configured to receive the control valve 300. The control valve socket 132 is provided as a threaded socket configured to receive a threaded probe of the control valve 300. That is to say, the control valve socket 132 and the probe of the control valve 300 have complementary threaded features by which the adaptor 100 and the control valve 300 are mechanically connected to each other, in accordance with known control valves 300. The control valve socket 132 may have a thread size of 2 1/2" NPSM (National Pipe Straight Mechanical standard) or 4" 8UN (unified extra fine thread) for making a threaded interface.

[31] Figure 3 shows the adaptor 100 and the control valve 300 coupled together. The control valve port 130 is configured to make a two-way fluid connection with the control valve 300 to exchange fluid with the control valve 300. Suitably, the control valve 300 comprises an outlet 311 and an inlet 322. The outlet 311 is configured to communicate flow out of the control valve 300, while the inlet 322 is configured to receive flow. The outlet 311 and the inlet 322 are suitable for being interfaced directly with corresponding structures of the filtration vessel 400, but according to the present disclosure the adaptor 100 is interfaced therebetween. That is to say, the outlet 311 of the control valve 300 is interfaced with the first inlet 111 of the adaptor 100, and the inlet 322 of the control valve 300 is interfaced with the first outlet 122 of the adaptor 100.

[32] A probe 330 of the control valve 300 is received into the control valve port 130. In particular, the probe 330 is provided as a threaded probe received into the threaded socket 132.

[33] The adaptor 100 comprises multiple filtration vessel pods 141, 142. Two filtration vessel pods 141, 142 are provided according to the present example. A first filtration vessel port 141 houses the second inlet 121 of the second conduit 120, while a second filtration vessel port 142 houses the first outlet 112 of the first conduit 110.

[34] Each filtration vessel port 141, 142 is provided with a suitable coupling feature for coupling to a corresponding port. According to the present example, the first filtration vessel port 141 and the second filtration vessel port 142 comprise sockets 143, 144. The sockets 143, 144 are provided as threaded sockets configured to receive probes having a complementary threading.

[35] The filtration vessel ports 141, 142 are configured for connection with external flow conduits 200 that connect the adaptor 100 to the filtration vessel 300. These external flow conduits 200 may be, for example, pipework of the filtration system 10. Together, the adaptor 100 and the external flow conduits 200 form an adaptor assembly.

[36] Figure 4 shows the adaptor 100, the control valve 300 and the filtration vessel 400 forming a filtration system 10.

[37] The adaptor 100 is interfaced directly with the control valve 300, and is interfaced with the filtration vessel by means of pipework 200. A first external conduit 210 of the pipework connects the outlet 112 of the adaptor 100 to the filtration vessel 400, while a second external conduit 220 of the pipework connects the filtration vessel 400 to the inlet 121 of the adaptor 100. In particular, the first external conduit 210 connects the outlet 112 of the adaptor 100 and an inlet 412 of the filtration vessel 400. The second external conduit 220 connects an outlet 421 of a riser tube 420 of the filtration vessel 400 to the inlet 121 of the adaptor 100.

[38] The first external conduit 210 comprises an oxidant intake 212. According to the present example, the oxidant intake 212 is configured to communicate ambient air into the first external conduit 210. Thus an oxidant, in this case air, can be communicated into a flow through the first external conduit 210, and said flow thus aerated. Any suitable means for an air intake 212 may be utilised, such as an inductor or pump. Any suitable oxidant may be utilised. For example, chlorine, potassium permanganate and ozone are oxidants used in water filtration systems.

[39] More advanced filtration methods may be required in order to provide drinking water and process water for commercial applications of higher water quality and to meet current or future standards. The present disclosure may allow configurations of water filtration equipment and filtration techniques that may hitherto be impossible to implement.

[40] In operation, the control valve 300 receives a flow of water from a source, such as mains, spring or borehole, and communicates the flow to the filtration vessel 400. The flow is discharged from the outlet 311 of the control valve 300 into the first inlet 111 of the adaptor 100, from where it is communicated to the first outlet 112 of the adaptor 100.

[41] From the first outlet 112 of the adaptor 100, the flow is communicated to the filtration vessel 400 through the first extemal conduit 200. The first external conduit 200 discharges the flow into the filtration vessel through the inlet 412 of the filtration vessel. Within the filtration vessel 400, the flow is diverted through a filtration bed 450 containing filtration media and directed towards the outlet 421 of the filtration vessel 400 by means of the riser tube 420. From the outlet 421 of the filtration vessel 400, the so purified flow is communicated to the adaptor 100 through the second external conduit 220.

[42] The adaptor 100 receives the flow, which has been purified by the filtration vessel 400, through the filtration vessel inlet 121 of the adaptor 100, and communicates the flow to the control valve 100 through the valve outlet 122 of the adaptor 100. The control valve 300 then distributes the purified flow through at least one further outlet provided on the control valve 300.

[43] The adaptor 100 provides flow connection between the control valve 300 and the filtration vessel 400 by means of adaptor inlets 111, 121 and outlets 112, 122 through which the control valve 300 and the filtration vessel 400 are interfaced. Since the adaptor 100 is thus located between the control valve 300 and the filtration vessel 400, 500, replacing the control valve 300 does not affect a riser tube which may be carried inside the filtration vessel 400. Thus replacing the control valve 300 may be made less time-consuming and labour-intensive.

[44] The spaced-apart configuration of the filtration vessels ports of the adaptor allows separating the flows to and from the control valve. Accordingly, the filtration vessel ports of the adaptor may make flow connection with spaced-apart ports of the filtration. This allows, for example, connection to a filtration vessel without riser tube.

[45] The air intake allows injecting ambient air into flow to the filtration vessel, i.e. aeration of the flow. Aeration of water may improve filtration, particularly where the water contains substances such as dissolved iron, manganese or hydrogen sulphide, oxidisation may precipitate the substance into a solid particulate which may be physically filtered from the water. Conventionally, aeration is carried out upstream of the control valve or at the control valve, but the oxidised substances may result in blockage of the control valve. Carrying out aeration downstream of the control valve, i.e. in the adaptor or the conduit to the filtration vessel, may therefore optimise performance of the control valve and the filtration vessel.

[46] The riser tube 420 of the filtration vessel 400 may have any suitable size, such as various imperial or metric sizes considered industry standards. For example, conventional filtration vessels may have riser tubes with outer diameters of 1.05 inches (approximately 26.7mm), 32mm and 13/16 inches (approximately 20.6 mm). Correspondingly, conventional control valves may be configured to receive riser tubes having such outer diameters, for example by means of flow conduits having substantially corresponding inner diameters and optional seals. Conversely, the adaptor 100 may therefore be configured to interface with a filtration vessel carrying a riser tube of a suitable diameter, and with a control valve dimensioned for receiving said riser tube.

[47] Figure 5 shows an example filtration system distributed across multiple locations 1000, 2000. A first location 1000, for example a house 1000, houses the control valve 300, the adaptor 100, and a brine tank 600. The brine tank 600 may be used for purposes of water softening. A second location 2000, which is separate from the first location 2000, houses the filtration vessel 400. Flow conduits 200 extending between these locations 1000, 2000, establish flow connection between filtration vessel 400 and the adaptor 100. Thus the size and bulk of the filtration vessel 400 may be accommodated in a suitable location, while the control valve 300 may be provided in a location for ease of access, access to electrical power supply, or convenience of filling the brine tank 600.

[48] Figure 6 shows an example filtration system utilising a pair of filtration vessels 500.

[49] The operation of the adaptor 100, in particular, and the filtration system 10, in general, set out with respect to Figure 4 relates to a filtration vessel 400 provided with riser tube 420. Utilising the adaptor 100, however, other types of filtration vessels may be used which do not have riser tubes. Thus a top-mount control valve, which is configured for use with a filtration vessel having a riser tube, can be used with a filtration vessel without riser tube by means of the adaptor 100. The filtration vessel 500 of Figure 6 differs from the filtration vessel 400 of Figure 4 in that the filtration vessel 500 has no riser tube. Instead, the filtration vessel 500 is provided with an inlet 512 and an outlet 521 which are spaced apart. In particular, the inlet 512 is located at the top of the vessel 500, from where a flow is communicated through a filtration bed 550, and then discharged from the filtration vessel 500 by means of the outlet 521 located at the bottom of the vessel 500.

[50] Providing a plurality of filtration vessels ports allows connecting a single control valve to multiple filtration vessels. Accordingly, a single control valve may be utilised to convey water through multiple filtration vessels, thus increasing performance without requiring multiple control valves.

[51] The exemplary filtration system 10 shown in Figure 6 comprises multiple filtration vessels 500. According to the example of Figure 6, the filtration vessels 500 are operated in sequence/series. That is to say, a flow is communicated from the adaptor 100 to a first filtration vessel 500, where the flow is filtered. Subsequently the flow is communicated from the first filtration vessel 500 to a second filtration vessel 500, where the flow is again filtered before being returned to the adaptor 100.

[52] According to other examples, filtration vessels may be operated in parallel. That is to say, a flow from the adaptor is split between two or more filtration vessels.

[53] According to further examples, filtration vessels connected in parallel may be operated in alternating duty/standby states. That is to say, a first filtration vessel is in use, while a second filtration vessel is not in use. The second filtration vessel may be, for example, regenerated while not in use. According to such examples, the filtration system may comprise a further valve, such as a duplex valve, configured to alternate the flow between the filtration vessels. In a first configuration, the first filtration vessel is in a duty state and the second filtration vessel is in a standby state. In a second configuration, the second configuration the first filtration vessel is in a standby state and the second filtration vessel is in a duty state.

[54] Utilising the duplex valve to alternate flow between at least two filtration vessels, flow may be directed to a first filtration vessel rather than a second filtration vessel or, alternatively, to the second filtration vessel rather than the first filtration vessel. As a result, the filtration vessels are operable between alternating duty states and standby states.

[55] Figure 7 shows another example of an adaptor 100.

[56] The adaptor 100 is configured to provide flow communication between the first flow conduit 110 and the second flow conduit 120. Suitably the adaptor 100 comprises a bleed hole 124 by means of which flow communication between the separate conduits 110, 120 is provided. In particular, the second flow conduit 120 defines the bleed hole 124 in the form of an aperture extending through the second flow conduit 120. The bleed hole 124 is suitably dimensioned to provide the desired amount of flow communication between the conduits 110, 120.

[57] Some examples of known filtration systems may require blended water. Such systems mix a portion of the water sent to the filtration vessel into water taken from the filtration vessel. According to some known examples, such blending may be achieved by a partly-opened bypass valve. However, over time flow through the partly-opened bypass valve may erode a mating surface of the valve seat of the partly-opened bypass valve or otherwise cause damage to the bypass valve. According to other known examples, bleed holes may be drilled into the riser tube of the filtration vessel. This requires removal of the riser tube, which involves technical difficulties as described above, and may require repeated removal of the riser tube where the size of the bleed holes needs to be altered. By contrast, a bleed hole is easily added to the adaptor and repeated access, for example to alter the size or number of bleed holes, does not require removal of the riser tube. Moreover, replacement of components of the adaptor may be more cost-effective than replacement of a whole riser tube, for example where a smaller bleed hole is desired.

[58] The adaptor 100 comprises a top screen 126. The top screen 126 is located in the control valve inlet 111. The top screen 126 extends around the second flow conduit 120. According to some examples, the top screen 126 is attached to the control valve 300 and the second flow conduit 120 is fitted through the top screen 126 into the control valve 300. The top screen 126 is a filter configured to prevent filtration media from leaving the filtration vessel 400, 500.

[59] The top screen filter carried inside the adaptor may be more easily accessible than a top screen filter fitted around a riser tube in a filtration vessel, particularly with a view to leaving the riser tube inside the filtration vessel undisturbed. The removal, cleaning and/or fitting of a top screen filter in the adaptor may therefore be faster and more straightforward to carry out.

[60] The adaptor 100 comprises a top part 101 (or "first part") and a bottom part 102 (or "second part"). The top part 101 and the bottom part 102 are depicted separately in Figure 7. When assembled, the top part 101 and the bottom part 102 are joined by a coupling means comprising a first coupling member 152 and a second coupling member 154. According to the present example, the coupling means is provided as a threaded coupling. More particularly, the first coupling member 152 is provided as a threaded socket, while the second coupling member 154 is provided as a threaded probe.

[61] The control valve port 130 comprises a collar 134 by means of which the first coupling member 152 secures the control valve port 130 to the bottom part 102.

[62] The adaptor 100 is configured such that the control valve port 130 is rotatable relative to the bottom part 102 when the top part 101 and the bottom part 102 are assembled. Conveniently, the control valve port 130 is rotatable relative to the second flow conduit 120, the filtration vessel inlet 121 or the filtration vessel outlet 112.

[63] When the top part 101 and the bottom part 102 are assembled and the control valve 300 is received into the control valve port 130, the control valve 300 is rotatable by means of the rotatable control valve port 130.

[64] Installation of a control valve directly on a filtration vessel may result in the control valve facing into an undesirable direction. For example, the control valve may be difficult to view and/or access. By utilising the adaptor to connect the control valve and the filtration vessel, however, the control valve may be rotatable relative to the filtration vessel. Suitably the control valve port is rotatable relative to other parts of the adaptor such that the control valve, when connected to the control valve port, is rotatable by means of rotating the control valve port.

[65] In summary, exemplary embodiments of an adaptor have been described. The described exemplary embodiments provide for an improved adaptor and an improved method of filtration using the adaptor. Additionally, the described exemplary embodiments are convenient to manufacture and straightforward to use.

[66] The adaptor may be manufactured industrially. An industrial application of the example embodiments will be clear from the discussion herein.

[67] Although preferred embodiment(s) of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made without departing from the scope of the invention as defined in the claims.

Claims

CLAIMS1. An adaptor (100) for connecting a top-mount control valve (300) to a filtration vessel (400, 500), comprising: a control valve port (130) comprising: a control valve socket (132) configured to receive the control valve (300), and a control valve inlet (111) and a control valve outlet (122) for flow communication with the control valve (300), the control valve inlet (111) arranged coaxially about the control valve outlet (122); and a filtration vessel outlet (112) and a filtration vessel inlet (121) configured for flow communication with the filtration vessel (400); the adaptor (100) defining: a first flow conduit (110) from the control valve inlet (111) to the filtration vessel outlet (112) to communicate flow from the control valve (300) to the filtration vessel (400, 500); and a second flow conduit (120) from the filtration vessel inlet (121) to the control valve outlet (122) to communicate flow from the filtration vessel (400, 500) to the control valve (300).
2. The adaptor according to claim 1, further comprising a first filtration vessel port (141) and a second filtration vessel port (142) spaced from the first filtration vessel port (141), wherein the first filtration vessel port (141) comprises the filtration vessel outlet (112) and the second filtration vessel port (142) comprises the filtration vessel inlet (121).
3. The adaptor according to any preceding claim, wherein the first flow conduit (110) and the second flow conduit (120) are connected by a bleed hole (124)
4. The adaptor according to any preceding claim, further comprising a top screen filter (126) located in the control valve inlet (111).
5. The adaptor according to any preceding claim, the adaptor comprising a first part (101) and a second part (102), wherein: the control valve port (130) is provided on the first part (101), and the control valve port (130) is rotatable relative to the second part (102).
6. An adaptor assembly comprising an adaptor (100) according to any preceding claim, and a flow conduit (210) for making a flow connection with the filtration vessel outlet (112), wherein the flow conduit (200) comprises an air intake (212) configured to communicate ambient air into flow through the flow conduit (200).
7. A filtration system, comprising: an adaptor (100) according to any one of claims 1 to 5 or the adaptor assembly according to claim 6, and a filtration vessel (400, 500).
8. The filtration system according to claim 7, the filtration vessel (500) comprising an inlet (512) for making a fluid connection with the filtration vessel outlet of the adaptor and an outlet (521) for making a fluid connection with filtration vessel inlet of the adaptor (100); wherein the inlet (512) and the outlet (521) are spaced apart.
9. The filtration system according to claim7 or 8, comprising: a plurality of filtration vessels, wherein the adaptor is configured to make flow connection with the plurality of filtration vessels in series.
10. The filtration system according to claim7 or 8, comprising: a plurality of filtration vessels, wherein the adaptor is configured to make flow connection with the plurality of filtration vessels in parallel.
11. The filtration system according to claim 10, the filtration system further comprising a duplex valve configured to alternate the filtration system between a first configuration and a second configuration, wherein in the first configuration a first filtration vessel is in a duty state and a second filtration vessel is in a standby state, and wherein in the second configuration the first filtration vessel is in a standby state and the second filtration vessel is in a duty state.