EP3555381A1 - Plumbing tundish - Google Patents
Plumbing tundishInfo
- Publication number
- EP3555381A1 EP3555381A1 EP17832316.8A EP17832316A EP3555381A1 EP 3555381 A1 EP3555381 A1 EP 3555381A1 EP 17832316 A EP17832316 A EP 17832316A EP 3555381 A1 EP3555381 A1 EP 3555381A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow
- connector
- tundish
- plumbing
- hollow connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009428 plumbing Methods 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000002699 waste material Substances 0.000 description 5
- 239000013505 freshwater Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/077—Arrangement of backflow preventing devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/08—Arrangement of draining devices, e.g. manual shut-off valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
- E03C1/102—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using an air gap device
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
- E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
- E03C1/1225—Arrangements of devices in domestic waste water pipe-line systems of air admittance valves
Definitions
- the present invention relates to a plumbing tundish, which facilitates removal of discharge, from a pressure relief valve, associated with a fresh water system, to waste whilst eliminating the risk of backflow contamination of the fresh water system
- a tundish is a device that can be used to visualise a fault in for example an unvented domestic hot water storage system or an unvented hot water heater.
- Such systems are typically supplied with a pressure relief valve (PRV) or temperature relief valve (TRV) to allow them to vent when pressure or temperature within the system reaches a predetermined level.
- PRV pressure relief valve
- TRV temperature relief valve
- the inlet end of a tundish device is connected to the outlet side of the PRV and any discharge from the PRV drips or flows into the tundish.
- the outlet end of the tundish is arranged to discharge any water to waste.
- Backflow from waste is prevented by an air gap provided near the top of the tundish; the air gap also assists with visualising any discharge via the PRV. It will be appreciated that any backflow is undesirable because the system to which the tundish is connected typically contains fresh, clean water and backflow could contaminate the water being supplied from the tank if not prevented.
- a known tundish incorporates an air gap in the upper portion of the body which allows fluid flow through the tundish but prevents back flow of fluids and additionally incorporates a one-way valve, which is operable to prevent backflow of fluid and of odours from the outlet side of the tundish.
- the present invention provides a plumbing device comprising a hollow tubular body, wherein the body comprises a first hollow connector and a second hollow connector, wherein the first and second hollow connectors are detachably connected to each other, wherein when connected the first and second hollow connectors form a tundish device, wherein the first connector comprises an air gap, which is defined by a plurality of elongated windows, arranged in at least two rows comprising a grid arrangement, which is configured by a plurality of substantially horizontal and a plurality of substantially vertical members, wherein points of intersection of the substantially horizontal and the substantially vertical members, define corners of each window.
- the elongated form of the windows and the arrangement of the grid cumulatively provides a relatively large air break and provides a visual indicator if/when something is wrong with the system in which the device is installed.
- the grid and window arrangement provide a relatively large volume air gap/air break to prevent backflow and facilitate observation of any fluid flow through the tubular body.
- the grid may comprise at least one substantially horizontal member and a plurality of substantially vertical members distributed along the horizontal member, thereby defining the plurality of intersection points and the plurality of windows arranged in at least two rows.
- the first and second hollow connectors may each comprise an inlet end and an outlet end, wherein the inlet end of the second hollow connector facilitates connection of the second hollow connector to the outlet end of the first hollow connector and the inlet end of the second hollow connector facilitates receiving a non-return valve device within the second hollow connector and wherein the inlet end of the first hollow connector provides the inlet end of the assembled tundish device and the outlet end of the second hollow connector provides the outlet end of the assembled tundish device.
- the inlet end of the second hollow connector may comprise a rim upon which a collar of a non-return valve device rests upon insertion into the second hollow connector and wherein connection of the first hollow connector to the second hollow connector interact to secure the collar of the valve device between the first and second hollow connection and the valve device within the second hollow connector.
- the collar may include a lip configured to be received on the rim of the second connector prior to assembly of the first and second hollow connectors. Assembling the first and second hollow connectors to produce an assembled tundish device is operable to retain the non-return valve device within the second hollow connector, wherein the first connector may be operable to push the lip against the rim thereby sandwiching the lip between the first and second hollow connectors. Connection of the first hollow connector to the second hollow connector may secure the valve device within the tubular body and may secure the collar against the rim of the second hollow connector.
- Connection of the first hollow connector to the second hollow connector may be mechanical fastening, wherein the outlet end of the first hollow connector is mechanically fastened to the inlet end of the second hollow connector.
- the mechanical fastening may be by threaded connection.
- the outlet end of the first hollow connector and the inlet end of the second hollow connector may include a bayonet connection or a snap-fit connection.
- the valve device may comprise a duckbill valve extending down from the collar into the second hollow connector, wherein the duckbill valve comprises an elongated hollow body, which includes an open first end, an open hollow section extending from the open first end, a flattened section extending from the open hollow section to a normally closed second end, wherein the flattened section and the normally closed second end are operable to allow one-way downstream fluid flow in a direction from the open first end to the normally closed second end and to prevent upstream backflow fluid and backflow odours from a direction downstream of the second closed end towards the open first end.
- the duckbill valve comprises an elongated hollow body, which includes an open first end, an open hollow section extending from the open first end, a flattened section extending from the open hollow section to a normally closed second end, wherein the flattened section and the normally closed second end are operable to allow one-way downstream fluid flow in a direction from the open first end to the normally closed second end and to prevent upstream backflow fluid and
- a tundish device comprising detachable first and second hollow connectors according to an embodiment of the present invention provides a versatile tundish device where the device can be used with or without a valve.
- a valve may not be necessary and the assembled tundish device can be used as a simple straight tundish.
- the tundish device can be fitted with a valve which allows flow through the device from inlet to outlet, but prevents back flow from outlet to inlet.
- the ability to assemble a tundish device of two connectable hollow connectors also provides versatility in changing either or each of the connectors where the end fitting of the inlet end of the first hollow connector and the outlet end of the second hollow connector may be larger or smaller than conventional.
- Figure 1 illustrates a schematic representation of an assembled tundish device according to an embodiment of the present invention
- Figure 2 illustrates a schematic representation of a cross-sectional view of the tundish device of figure 1 including a non-return valve located inside the tundish;
- Figure 3a illustrates a front view of a duck-bill type non-return valve as used with an embodiment of the present invention
- Figure 3b illustrates a side view of the duck-bill valve of figure 3a showing the normally closed arrangement.
- the illustrated tundish 10 comprises a hollow tubular body 12 (see figure 2) formed of an upper connector 14 and a lower connector 16.
- the upper connector 14 provides the inlet to the tundish 10 and the lower connector 16 provides the outlet from the tundish 10.
- the tundish 10 is typically installed in a vertical orientation as illustrated. Therefore, references to the illustrated parts as upper and lower parts is based on the orientation, as illustrated, and as intended for installation.
- an inlet end 15 of the upper connector 14 includes an external threaded connector 18, which facilitates connection of the assembled tundish 10 to a suitable pressure relief valve or temperature relief valve (not illustrated).
- the lower connector 16 also includes an external threaded connector 20 at the outlet end 21 , where the threaded connector 20 facilitates connection of the assembled tundish 10 to a suitable waste system (not illustrated).
- the assembled tundish 10 requires connection of the upper connector 14 to the lower connector 16.
- the connection of the upper and lower connectors 14, 16 is by threaded connection, where the upper connector 14 includes an outlet end 22 comprising an internal thread and the lower connector 16 comprises an inlet end 26 (see figure 2) comprising an external thread.
- the inlet end 26 of the lower connector 16 is received in the outlet end 22 of the upper connector 14.
- connection may include a bayonet connection (not illustrated), a snap fit connection (not illustrated) etc.
- the upper connector 14 includes an air break 30 proximate the inlet end 15.
- the air break 30 includes a grid arrangement 32, which, in the illustrated embodiment, includes vertical members 34 and horizontal members 36 arranged to define windows 35 between the intersection points of the vertical and horizontal members 34, 36.
- the grid arrangement 32 provides an efficient air break 30 which prevents a backflow of fluid and enables a visual check for discharge from the system to which the tundish assembly 10 is connected.
- the windows 35 provide ventilation, which creates an effective air gap or air break and the spacing defined by the grid arrangement is small enough to prevent access to the inside of the body 12, for example by fingers, whilst the tundish 10 is assembled. This is particularly important when the tundish 10 is connected to a boiler or hot water system, where it will be appreciated that any discharge may be scalding hot.
- the tundish assembly 10 includes a non-return valve 38.
- the non-return valve comprises a duck-bill valve, but it will be appreciated that other valve types may be used.
- the non-return valve 38 is mounted within the body of the tundish 10 via the inlet end 26 of the lower connector 16.
- the non-return valve 38 is mounted within the lower connector 16.
- the non-return valve 18 is carried in a collar 40.
- the collar 40 comprises a lip 42 at the upper end.
- the lip 42 is configured to rest on a rim 44 at the upper inlet end 26 of the lower connector 16 to locate the non-return valve 38 within the tubular body 12.
- the arrangement of the lip 42 and the rim 44 facilitates retaining the non-return valve 38 within the tubular body 12, wherein assembling the upper and lower connectors 14, 16 compresses the lip 42 between an inner surface or shoulder (not illustrated) provided on the inside of the outlet end 22 of the upper connector 14 and the rim 44 of the lower connector 16.
- the outer surface of the collar 40 may be ribbed 43 to create an interference fit when it is inserted in the lower connector 16.
- the collar may comprise a seal (not illustrated), such as an O-ring seal on the outer surface of the collar 40 such that sealing contact is created between the exterior of the collar 40 and the interior of the lower connector 16 during assembly.
- the non-return valve 38 acts to prevent backflow of fluid and odours from the outlet end 21 to inlet end 15 of the assembled tundish 10.
- the duck bill valve 38 includes a collar 40 and a valve member 50.
- the valve member 50 is manufactured from rubber or a synthetic elastomer.
- the upper portion of the valve member (the inlet side) is held open by a substantially cylindrical member 52 and the outlet end 54 is shaped and formed to be flattened.
- the pressure acts to open the outlet end of the valve member 50 to allow fluid or gas to pass through the valve member 50.
- the outlet end 54 of the valve member 50 When pressure is removed, the outlet end 54 of the valve member 50 returns to the flattened, closed configuration and remains closed, particularly if pressure from the outlet end 54 acts on the valve member 50.
- the shape of the substantially cylindrical support at the inlet end of the valve member prevents the valve member 50 from inverting when subject to pressure from the outlet side 54 of the valve member 50.
- the substantially cylindrical support comprises two diametrically opposite V-grooves 52 substantially the height of the cylindrical support. The voids created by the grooves define the substantially cylindrical support as two diametrically opposed curved inverted V-members which hold open the upper body of the valve member 50.
- the support arrangement is such that in the event of back pressure the inverted V- members oppose inversion of the valve member 50.
- the closed end 54 of the valve member 54 includes a kinked section 60 such that backflow pressure or fluid will tend to fold the valve member 50 about itself rather than open the valve member 50.
- the inverted V-members act to limit folding of the valve member 50 in this situation also.
- the provision of a two-piece tubular body is such that the tundish 10 can be maintained and the non-return valve 38 can be replaced if faulty or is of insufficient flow rate to allow full discharge.
- a tundish assembly 10 is versatile in that the upper and lower connectors 14, 16 can be substituted with similar upper and lower connectors to accommodate available space in the installation system or dissimilar connector dimensions upstream and downstream of the device.
- the tundish assembly 19 can be used with or without a valve member 38 or with an alternative valve member to that described above.
- a diaphragm valve or a spring- loaded valve member could be inserted.
- Expected flow conditions may dictate what type of valve is best suited to the tundish assembly 10.
- the modular arrangement of the tundish assembly 10, according to an embodiment of the present invention is such that a maintainable product is provided rather than a consumable product.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Check Valves (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17832316T PL3555381T3 (en) | 2016-12-15 | 2017-12-14 | Plumbing tundish |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1621369.6A GB2557680B (en) | 2016-12-15 | 2016-12-15 | plumbing tundish |
PCT/GB2017/053741 WO2018109475A1 (en) | 2016-12-15 | 2017-12-14 | Plumbing tundish |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3555381A1 true EP3555381A1 (en) | 2019-10-23 |
EP3555381B1 EP3555381B1 (en) | 2021-06-16 |
Family
ID=58284536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17832316.8A Active EP3555381B1 (en) | 2016-12-15 | 2017-12-14 | Plumbing tundish |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3555381B1 (en) |
GB (1) | GB2557680B (en) |
PL (1) | PL3555381T3 (en) |
RU (1) | RU2727020C1 (en) |
WO (1) | WO2018109475A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2596505B (en) * | 2020-04-03 | 2024-05-29 | Altecnic Ltd | Tundishes |
GB2612650A (en) * | 2021-11-09 | 2023-05-10 | Altecnic Ltd | Tundish with integral dry tap |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2033955A (en) * | 1934-07-30 | 1936-03-17 | Robinovitz Jack | Vacuum breaking device |
US2328382A (en) * | 1941-10-08 | 1943-08-31 | Jesse D Langdon | Flexible check valve and vacuum breaker |
US2598002A (en) * | 1946-08-20 | 1952-05-27 | Jesse D Langdon | Check valve construction |
DE2650655B2 (en) * | 1976-11-05 | 1978-08-24 | Harri Mones Kg, 5657 Haan | Pipe interrupter |
DE8709163U1 (en) * | 1987-07-03 | 1987-08-27 | Keramag Keramische Werke Ag, 4030 Ratingen | Device for connecting the under-shower of a hygienic toilet seat to the water supply network |
DE202005002415U1 (en) * | 2005-02-14 | 2005-04-21 | Hans Sasserath & Co. Kg | Component set for the modular creation of a flow arrangement |
RU2395743C2 (en) * | 2005-04-12 | 2010-07-27 | Ян Дракуп ДОИГ | Valve and system for removal of fluid medium from settling tank of sewage header, containing such valve |
GB2478124A (en) * | 2010-02-24 | 2011-08-31 | City Water & Environmental Consultants Ltd | Water Sanitary Management System |
DE202012103128U1 (en) * | 2012-08-20 | 2013-11-22 | Hans Sasserath & Co. Kg | Arrangement for carrying out a hygiene flush in a water installation |
US10364559B2 (en) * | 2014-01-30 | 2019-07-30 | Russell Winston Armstrong | Plumbing device |
DE202015103322U1 (en) * | 2015-06-24 | 2016-09-30 | Hans Sasserath Gmbh & Co. Kg | Attachment piece for drain funnel |
-
2016
- 2016-12-15 GB GB1621369.6A patent/GB2557680B/en not_active Expired - Fee Related
-
2017
- 2017-12-14 WO PCT/GB2017/053741 patent/WO2018109475A1/en unknown
- 2017-12-14 RU RU2019120815A patent/RU2727020C1/en active
- 2017-12-14 EP EP17832316.8A patent/EP3555381B1/en active Active
- 2017-12-14 PL PL17832316T patent/PL3555381T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
RU2727020C1 (en) | 2020-07-17 |
WO2018109475A1 (en) | 2018-06-21 |
EP3555381B1 (en) | 2021-06-16 |
GB2557680B (en) | 2019-09-04 |
GB201621369D0 (en) | 2017-02-01 |
GB2557680A (en) | 2018-06-27 |
PL3555381T3 (en) | 2021-09-27 |
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