WO1999045307A1 - Branch-pipe ferrule and method of inserting same in a lined mains-pipe - Google Patents
Branch-pipe ferrule and method of inserting same in a lined mains-pipe Download PDFInfo
- Publication number
- WO1999045307A1 WO1999045307A1 PCT/GB1999/000621 GB9900621W WO9945307A1 WO 1999045307 A1 WO1999045307 A1 WO 1999045307A1 GB 9900621 W GB9900621 W GB 9900621W WO 9945307 A1 WO9945307 A1 WO 9945307A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ferrule
- pipe
- opening
- tool
- flange
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/179—Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/14—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe by screwing an intermediate part against the inside or outside of the wall
Definitions
- the present invention relates to a method for inserting a ferrule into an opening formed in a wall of a lined pipe and to a ferrule suitable for use in that method.
- liners are inserted into for example cast iron pipes
- relatively thin walled liners can be used as the residual mechanical strength of the cast iron can provide support for the liner.
- thin-walled liners are pulled into a pipe in folded form and then expanded by applying internal pressure.
- the liners must be sized so that they can be expanded effectively. If the liners are too large, they remain in a partially folded form.
- the internal diameter of cast iron pipes is often irregular and for example old cast iron pipes having a nominal internal diameter of 100mm may have an internal diameter adjacent the pipe ends as small as 98mm and internal diameters at relatively thin-walled parts of their length as large as 108mm.
- a folded liner sized for such circumstances might have a nominal external diameter of 100mm, which means that there may be a significant gap between the liner and the internal wall of a pipe into which it is inserted. If an opening is then formed through the pipe and the liner where such a gap exists, and the liner is then clamped against the pipe wall, when the pipe is subsequently pressurised the liner will stretch until it is supported by the pipe. As a result the size of the opening in the liner will increase in the circumferential direction of the pipe. This will not be a problem if the ferrule flange is sufficiently wide to ensure sufficient overlap between the flange and the edge of the opening in the liner. It is difficult however to provide wide flanges in devices which rely upon expansion of a ferrule head after insertion of the ferrule through an opening in the pipe.
- a method for inserting a ferrule into an opening formed in a wall of a lined pipe such that a tubular body of the ferrule extends through the opening and the liner is trapped between the pipe and a flange which is supported adjacent one end of the body, wherein the ferrule is transported along the interior of the lined pipe from an open end of the pipe to adjacent the opening, the ferrule body is pulled through the opening from outside the opening, and the ferrule body is secured in position relative to the pipe such that the flange abuts the liner.
- the ferrule body may be pulled through the opening by inserting a tool through the opening into engagement with the ferrule and then withdrawing the tool from the opening such that the ferrule body is pulled by the tool through the opening.
- the ferrule body may be internally threaded and the tool may be externally threaded to enable it to be screwed into engagement with the ferrule.
- a tool may be provided which is engageable by a push fit in the ferrule body, the engagement being sufficiently secure to enable an operator to pull the ferrule body on the tool through the opening.
- the ferrule body may be engaged by for example hooking a tool directly onto the ferrule body or onto a member extending from the ferrule body and then pulling the ferrule through the opening by manipulation of the tool.
- the opening may be formed in an upper portion of the lined pipe and the ferrule may be transported such that it assumes a position flange downwards in a lower portion of the pipe, the position of the ferrule relative to the opening being determined visually by looking into the pipe through the opening.
- the axial position of the ferrule within the pipe may be controlled by an elongate member such as a push rod.
- the ferrule may be secured in position by a nut which is screwed on to an external thread defined by the ferrule body.
- the present invention also provides a ferrule for insertion into an opening of predetermined diameter formed in a wall of a lined pipe in accordance with a method as defined above, the ferrule comprising an externally threaded tubular body supporting a flange the outside diameter of which is substantially greater than the diameter of the opening.
- the body may be internally threaded, the internal and external threads being of opposite hand.
- a nut may be screwed onto the external thread of the ferrule body to secure it in position.
- a shaped washer may be interposed between the nut and the external surface of the pipe, the shaped washer defining one surface which mates with the external surface of the pipe and an opposed surface which is transverse to the length of the ferrule body.
- a connector may also be screwed into the nut, a sealing washer being provided within the nut to form a seal between an end of the ferrule body remote from the flange and an end of the connector which is screwed into the nut.
- Figure 1 is a sectional view through a lined pipe into which a ferrule in accordance with the present invention has been inserted;
- Figure 2 is a schematic representation of the method of insertion of a ferrule in accordance with the present invention
- Figure 3 is a plan view of a ferrule carrier shown in Figure 2 on which a ferrule is supported;
- Figure 4 is a side view of the carrier of Figure 3 in the direction of arrows 4.4 of Figure 3 with the ferrule being shown partly cut away.
- a cast iron pipe 1 receives a polyethylene liner 2.
- the liner 2 is a snug fit within the pipe 1 but this need not necessarily be the case.
- a circular opening 3 has been drilled through the pipe and the liner from outside the pipe.
- the opening 3 receives a ferrule comprising a ferrule body 4 which is threaded internally and externally and a flange 5 the outside diameter of which is substantially larger than the internal diameter of the opening 3.
- a resilient gasket 6 is interposed between the flange 5 and the inner surface of the liner 2.
- a shaped washer 7 has a curved surface which mates with the cylindrical outer surface of the pipe 1 around the opening and a planar surface against which a spacer washer 8 bears.
- a nut 9 is screwed onto the external thread of the ferrule body 4 so as to compress the gasket 6 and the liner 2 between the flange 5 and the pipe 1.
- the end of the ferrule body remote from the flange 5 is located approximately midway along the axial length of the nut 9, the relative position of the nut on the ferrule body 4 being controllable by appropriate selection of spacer washers 8. This makes it possible for the assembly to be adapted for use with cast iron pipes of substantially different wall thicknesses.
- a connector 10 coupled to a supply pipe 11 defines an externally threaded tubular body 12 which is screwed into the nut 9.
- a conventional ferrule designed for direct insertion into a threaded opening in a cast iron pipe has a tapered external thread to ensure a tight fit in such an opening.
- the connector 10 may be such a conventional ferrule reworked to convert the tapered external thread into a parallel thread suitable for engagement by the nut 9.
- a resilient washer 13 of for example nylon is located inside the nut 9 between the ferrule body 4 and the connector portion 12 so as to form a reliable seal there between.
- Figure 2 illustrates a method by which the ferrule of Figure 1 may be assembled assuming the opening 3 is remote from an available open pipe end.
- a pipe 14 is shown as extending between excavations 15 and 16.
- a further excavation 17 is formed in a region of the pipe where an opening 18 is required to make a branch connection.
- One end of the pipe has connected to it a flexible pipe 19 which extends to a rod dispensing roller 20.
- a rod 21 extends through the pipe 19 into the pipe 14 and has attached to its end a carrier 22 on which the ferrule body is supported.
- the carrier 22 is boat-like, having a lower surface which enables it to slide readily over the smooth inner surface of the liner 2.
- a ferrule 23 is located on a pin 24 extending from an upper surface of the carrier.
- a J-shaped clamp which is pivotal about a pin 26 is biased towards a pin 27 by a tension spring 28 extending between the clamp 25 and a further pin 29. Pivotal movement of the clamp 25 around the pin 26 biases the ferrule 23 against the pin 24, thereby securely clamping the ferrule on the carrier 22.
- the carrier 22 is connected to a bracket 30 supporting a pin 31.
- the pin may be inserted through for example an eye (not shown) in one end of the rod 21 shown in Figure 2, or through an eye in one end of a cable used to pull the carrier through the
- a ferrule may be moved along the pipe 14 in an orientation such that the ferrule body extends upwards and the flange is clamped on the carrier 22.
- the peripheral edge of the ferrule flange may be non-circular and may fit inside a mating non-circular recess in the carrier 22.
- the washer 7 and the ferrule body 4 may be keyed together to ensure that they adopt the appropriate relative orientation so that an installer would know by appropriate positioning of the washer 7 on the external surface of the pipe that the flange 5 had also been appropriately positioned within the lined pipe.
- the radius of curvature of the flange 5 may be selected to match that of the "average" cast iron pipe in which it may be inserted in order to minimise the variation in the gap between the flange and pipe which has to be accommodated by the gasket 6.
- the internal diameter of the liner surface against which the flange bears may vary between 95 and 105mm, and therefore a flange radius of curvature of 50mm would be appropriate.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99937973A EP1086332A1 (en) | 1998-03-03 | 1999-03-02 | Branch-pipe ferrule and method of inserting same in a lined mains-pipe |
AU32629/99A AU3262999A (en) | 1998-03-03 | 1999-03-02 | Branch-pipe ferrule and method of inserting same in a lined mains-pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9804353.2A GB9804353D0 (en) | 1998-03-03 | 1998-03-03 | Ferrule insertion |
GB9804353.2 | 1998-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999045307A1 true WO1999045307A1 (en) | 1999-09-10 |
Family
ID=10827815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1999/000621 WO1999045307A1 (en) | 1998-03-03 | 1999-03-02 | Branch-pipe ferrule and method of inserting same in a lined mains-pipe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1086332A1 (en) |
AU (1) | AU3262999A (en) |
GB (1) | GB9804353D0 (en) |
WO (1) | WO1999045307A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002066881A1 (en) * | 2001-02-19 | 2002-08-29 | Plexaco S.A. | Water off-take from layflat hose, special fitting for water off-take from a flexible flat hose (layflat) description |
WO2007127447A2 (en) * | 2006-04-27 | 2007-11-08 | Ina Acquisition Corp. | Reinstatement of an existing connection in a lined conduit |
US8820363B2 (en) | 2010-03-24 | 2014-09-02 | Ina Acquisition Corp. | Wedge type plug and method of plugging a lateral line |
DE102019110305A1 (en) * | 2019-04-18 | 2020-10-22 | Amex Sanivar Ag | House connection socket and house connection arrangement |
DE102019110315A1 (en) * | 2019-04-18 | 2020-10-22 | Amex Sanivar Ag | House connection arrangement |
US11079055B2 (en) | 2018-10-30 | 2021-08-03 | Ina Acquisition Corp. | Fitting for connecting a main pipe liner to a branch conduit |
IT202000009964A1 (en) * | 2020-05-05 | 2021-11-05 | Teco Srl | SYSTEM AND METHOD OF ASSEMBLING SHUT-OFF VALVES OR ADAPTERS IN AN IRRIGATION SYSTEM |
US11391407B2 (en) | 2018-11-30 | 2022-07-19 | Ina Acquisition Corp. | Methods, systems, and apparatus for use in main pipes connected to branch conduit |
US11662047B2 (en) * | 2018-04-25 | 2023-05-30 | Pipe-Aqua-Tec Gmbh & Co. Kg | Pipe connection system and method for producing a pipe connection |
US11774025B2 (en) | 2018-10-30 | 2023-10-03 | Ina Acquisition Corp. | Fitting for connecting a main pipe liner to a branch conduit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3841667A (en) * | 1972-12-15 | 1974-10-15 | Mueller Co | Non-tapping service line connection fitting |
EP0253630A1 (en) * | 1986-07-15 | 1988-01-20 | Angus Fire Armour Limited | A method of pipe renovation |
EP0407575A1 (en) * | 1989-01-06 | 1991-01-16 | Ashimori Kogyo Kabushiki Kaisha | Apparatus and instrument used to line branched pipe |
DE4435653A1 (en) * | 1993-10-05 | 1995-04-06 | Angus Fire Armour Ltd | Branch insert for a pipe |
-
1998
- 1998-03-03 GB GBGB9804353.2A patent/GB9804353D0/en not_active Ceased
-
1999
- 1999-03-02 EP EP99937973A patent/EP1086332A1/en not_active Withdrawn
- 1999-03-02 WO PCT/GB1999/000621 patent/WO1999045307A1/en not_active Application Discontinuation
- 1999-03-02 AU AU32629/99A patent/AU3262999A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3841667A (en) * | 1972-12-15 | 1974-10-15 | Mueller Co | Non-tapping service line connection fitting |
EP0253630A1 (en) * | 1986-07-15 | 1988-01-20 | Angus Fire Armour Limited | A method of pipe renovation |
EP0407575A1 (en) * | 1989-01-06 | 1991-01-16 | Ashimori Kogyo Kabushiki Kaisha | Apparatus and instrument used to line branched pipe |
DE4435653A1 (en) * | 1993-10-05 | 1995-04-06 | Angus Fire Armour Ltd | Branch insert for a pipe |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002066881A1 (en) * | 2001-02-19 | 2002-08-29 | Plexaco S.A. | Water off-take from layflat hose, special fitting for water off-take from a flexible flat hose (layflat) description |
WO2007127447A2 (en) * | 2006-04-27 | 2007-11-08 | Ina Acquisition Corp. | Reinstatement of an existing connection in a lined conduit |
WO2007127447A3 (en) * | 2006-04-27 | 2008-03-27 | Ina Acquisition Corp | Reinstatement of an existing connection in a lined conduit |
JP2009535578A (en) * | 2006-04-27 | 2009-10-01 | アイエヌエイ アクイジション コーポレーション | Rehabilitation of existing joints in lined conduits |
US8015695B2 (en) | 2006-04-27 | 2011-09-13 | Ina Acquisition Corp. | Reinstatement of an existing connection in a lined conduit |
AU2007243167B2 (en) * | 2006-04-27 | 2013-02-28 | Ina Acquisition Corp. | Reinstatement of an existing connection in a lined conduit |
US8820363B2 (en) | 2010-03-24 | 2014-09-02 | Ina Acquisition Corp. | Wedge type plug and method of plugging a lateral line |
US11662047B2 (en) * | 2018-04-25 | 2023-05-30 | Pipe-Aqua-Tec Gmbh & Co. Kg | Pipe connection system and method for producing a pipe connection |
US11774025B2 (en) | 2018-10-30 | 2023-10-03 | Ina Acquisition Corp. | Fitting for connecting a main pipe liner to a branch conduit |
US11079055B2 (en) | 2018-10-30 | 2021-08-03 | Ina Acquisition Corp. | Fitting for connecting a main pipe liner to a branch conduit |
US11391407B2 (en) | 2018-11-30 | 2022-07-19 | Ina Acquisition Corp. | Methods, systems, and apparatus for use in main pipes connected to branch conduit |
US11828400B2 (en) | 2018-11-30 | 2023-11-28 | Ina Acquisition Corp. | Methods, systems, and apparatus for use in main pipes connected to branch conduit |
DE102019110315A1 (en) * | 2019-04-18 | 2020-10-22 | Amex Sanivar Ag | House connection arrangement |
DE102019110305A1 (en) * | 2019-04-18 | 2020-10-22 | Amex Sanivar Ag | House connection socket and house connection arrangement |
DE102019110315B4 (en) | 2019-04-18 | 2024-09-26 | Amex Sanivar Ag | House connection arrangement |
EP3906778A1 (en) * | 2020-05-05 | 2021-11-10 | Fluid-O-Tech Group S.R.L | System and method for mounting shut-off valves or adapters in an irrigation system |
IT202000009964A1 (en) * | 2020-05-05 | 2021-11-05 | Teco Srl | SYSTEM AND METHOD OF ASSEMBLING SHUT-OFF VALVES OR ADAPTERS IN AN IRRIGATION SYSTEM |
US11898681B2 (en) | 2020-05-05 | 2024-02-13 | Teco S.R.L. | System and method for mounting shut-off valves or adapters in an irrigation system |
Also Published As
Publication number | Publication date |
---|---|
EP1086332A1 (en) | 2001-03-28 |
AU3262999A (en) | 1999-09-20 |
GB9804353D0 (en) | 1998-04-22 |
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