[go: up one dir, main page]

WO2011054468A1 - Élément de conduite pour une conduite souterraine - Google Patents

Élément de conduite pour une conduite souterraine Download PDF

Info

Publication number
WO2011054468A1
WO2011054468A1 PCT/EP2010/006568 EP2010006568W WO2011054468A1 WO 2011054468 A1 WO2011054468 A1 WO 2011054468A1 EP 2010006568 W EP2010006568 W EP 2010006568W WO 2011054468 A1 WO2011054468 A1 WO 2011054468A1
Authority
WO
WIPO (PCT)
Prior art keywords
end portion
conduit
seal
line
adjacent
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.)
Ceased
Application number
PCT/EP2010/006568
Other languages
German (de)
English (en)
Inventor
Jürgen Sieber
Hans-Robert Wurm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rehau AG and Co filed Critical Rehau AG and Co
Priority to EP10771665A priority Critical patent/EP2496872A1/fr
Publication of WO2011054468A1 publication Critical patent/WO2011054468A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
    • 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
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
    • 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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F16L15/008—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with sealing rings
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring

Definitions

  • the present invention relates to a conduit member for a conduit to be buried in the ground.
  • Known pipes intended for burial in the ground are in many cases laid in the ground in such a way that they are "driven” into a previously formed burial hole, which are usually at least partially made of a polymer material and are also called plastic jacking pipes. They can be used in particular as laying lines or receiving lines for gas lines or power and telecommunication cables or the like It is also known to use these lines as sewers or sewage pipes or as storm water pipes or rainwater pipes.
  • the laying in the ground takes place in that individual pipe elements, such as pipe sections driven in accordance with the planned course or according to the course of the previously formed hole substantially successively in the axial direction in the previously formed hole and connected to form the line with each other, as for example from DE 3402198 A1 for the formation of a protective line for the protection of electrical cables laid in the ground is known.
  • the connection between the individual line elements is usually formed in the form of a plug connection or a latching connection.
  • Further known typical line elements for the formation of lines to be laid in the ground are inter alia from EP 1 375 114 A2, EP 1 705 418 A2, DE 200 17 639 U1, US Pat
  • leakage of liquid from a buried conduit is referred to as exfiltration and relates to applications where the conduit is e.g. is provided as a sewer line or rainwater pipe, so for the flow through a liquid in the form of so-called extraneous water or generally a fluid.
  • exfiltration due to leakage e.g. contamination of the soil occurs when e.g.
  • wastewater from industrial processes enters the soil from the pipeline.
  • the present invention is therefore an object of the invention to provide a conduit element for a laying in the ground line, with which it is possible by connecting to other line elements to produce a laid in a ground line at which significantly reduces the risk of leakage compared to known solutions.
  • a conduit element for a pipe to be laid in the ground wherein the conduit member has at least one end portion which is connectable to an adjacent conduit member, wherein at least one main seal and at least one safety seal are arranged at the end portion, wherein the Main seal is provided to seal the connection to the adjacent line member against penetrating liquid, and wherein the safety seal is activated by contact with liquid and intended to restore the tightness of the connection in case of existing leakage.
  • at least one main seal which is provided to seal the connection to the adjacent line element against penetrating liquid
  • at least one safety seal is provided, which restores the leak tightness in the event of an existing leak.
  • the safety seal can be activated by contact with liquid, the safety seal preferably consisting partially or wholly of a swellable material.
  • a swellable material which may in particular be a swellable elastomer or a thermoplastic elastomer composite (such as Q-TEC known from AWADOCK)
  • Q-TEC thermoplastic elastomer composite
  • Source volume, source pressure and source start are preferably adjustable.
  • a safety seal which consists partly or wholly of a swellable material, adapts itself by its increase in volume and flexibility almost any shape and can thus seal leaks.
  • the conduit member is preferably made of a polymeric material, which polymer material may preferably be unfilled polypropylene.
  • the liquid which would penetrate in existing leakage without the safety seal in the conduit element or in the inner volume of the conduit element, in particular water or moisture from the ground.
  • This liquid can be especially due to a failure of the main seal or due to a leakage of the main seal penetrate to the safety seal and activate them to restore the tightness.
  • Failure or leakage of the main seal may be the result of slippage or damage to the main seal, which slippage or damage may occur, in particular during connection of the conduit members to produce a buried conduit, such as, for example can take place, that the end portion, on which the main seal and the safety seal are arranged, inserted into an end portion of the adjacent line element or is attached to this.
  • the main seal may preferably be made partly or wholly of EPDM (abbreviation for ethylene-propylene-diene rubber) or NBR (abbreviation for nitrile rubber) or SBR (abbreviation for styrene-butadiene rubber) or a TPE (abbreviation for thermoplastic) Elastomer).
  • EPDM abbreviation for ethylene-propylene-diene rubber
  • NBR abbreviation for nitrile rubber
  • SBR abbreviation for styrene-butadiene rubber
  • TPE abbreviation for thermoplastic Elastomer
  • the main seal may preferably be in the form of an O-ring seal or in the form of a lip seal.
  • the safety seal may preferably be in the form of an O-ring seal or in the form of a lip seal. Both the O-ring seal and the lip seal are practical and effective seal shapes.
  • the safety seal and main seal may have any cross-sectional shape configured to provide a sufficient sealing effect.
  • a secondary seal is further disposed on the end portion such that the safety seal is between the main seal and the secondary seal.
  • the secondary seal is provided to seal the connection to the adjacent line element against leakage of liquid or fluid, provided that a flow through the line elements with a fluid or a liquid, such as wastewater is provided.
  • the safety seal assumes a dual function. It serves to restore or maintain tightness in the event of an existing leak at the main seal and / or to restore or maintain tightness in the event of an existing leak on the secondary seal.
  • the secondary seal may also preferably be made partially or entirely of EPDM (abbreviation for ethylene-propylene-diene rubber) or NBR (abbreviation for nitrile rubber) or SBR (abbreviation for styrene-butadiene rubber) or a TPE (abbreviation for thermoplastic elastomer).
  • EPDM abbreviation for ethylene-propylene-diene rubber
  • NBR abbreviation for nitrile rubber
  • SBR abbreviation for styrene-butadiene rubber
  • TPE abbreviation for thermoplastic elastomer
  • the secondary seal may preferably be in the form of an O-ring seal or in the form of a lip seal.
  • the safety seal may have any cross-sectional shape configured to provide a sufficient sealing effect.
  • the conduit member has two opposite end portions, each end portion being connectable to a respective adjacent conduit member.
  • the conduit element is rectilinear in this practical embodiment.
  • the conduit element can also be designed in the form of tubular elements or tube.
  • the conduit element can also be designed in the form of a rectilinear pipe element or pipe.
  • the end section has an external thread which can be screwed into an internal thread which is formed on an end section of the adjacent line element.
  • the end portion may have an internal thread, which is screwed onto an external thread, which is formed at an end portion of the adjacent conduit member.
  • the line elements in a practical and simple way for the production or formation of a laid in the ground Line are connected to each other via a screw connection.
  • the screw creates a stiff, detachable, tension and pressure-resistant connection between the line elements, which is suitable, an unwanted bending and deformation, as for example, when encountered on an obstacle during the "driving" of the pipe element or the pipe into the ground
  • the bolting can be done with a small amount of force, so that the main seal is rarely moved or torn off, and if this does happen, the safety seal will restore tightness.
  • the end portion for producing a latching connection is latchingly inserted into an end portion of the adjacent conduit member.
  • the snap-in connection creates a tension- and pressure-resistant connection between the line elements, which is suitable, unwanted bending and deformation, as described, for example, in US Pat.
  • At least one annular groove is preferably formed on the outer surface of the end portion, in which a detent ring is received
  • the latching ring preferably has an interruption, so that it can be easily arranged by suitable elastic expansion on the end portion and pushed to the annular groove.
  • the end portion is latchingly pushed onto an end portion of the adjacent conduit member.
  • at least one annular groove is formed on the inner surface of the end portion, in which a locking ring is received.
  • At least one identification element is attached to an inner wall of the conduit element.
  • the identification element is preferably detectable out of the inner volume of the conduit element, wherein the inner volume of the inner wall of the conduit element is limited.
  • the identification Onselement is provided with data or information, which preferably relate to the line element or the laid in the ground line, ie data or information such as serial numbers, materials, required by standards or laws data, manufacturer information, date of manufacture, pipe type, pipe material, etc.
  • the Data or information may be in the form of characters or symbolic characters.
  • the data or information can be detected by using control devices which can be introduced into the internal volume of the line element or into the internal volume of the laid line, such as, for example, line inspection cameras, so that they can be made available to a user.
  • the identification element is designed in the form of an RFID chip.
  • data stored on the RFID chip which are preferably data associated with the line element or the underground pipe, can be read out wirelessly, so that the use of control devices, such as cameras for line inspection, is dispensed with can be.
  • the conduit element is provided with a wear-resistant outer layer.
  • the wear-resistant outer layer prevents damage to the line element, preferably damage to a supporting inner layer of the line element on which the outer layer is preferably applied, along with additional security when driving or introducing the line element or the line into the ground.
  • the invention further relates to a pipe for laying in the ground, comprising at least one inventive line element, preferably at least two interconnected line elements according to the invention.
  • a pipe for laying in the ground comprising at least one inventive line element, preferably at least two interconnected line elements according to the invention.
  • end sections of the line elements are connected to one another in such a way that the inner volumes of the line elements bounded in each case by an inner wall are connected.
  • the line for laying in the ground for example, comprise at least 3 and up to 10 or at least 3 and up to 20 connected line elements according to the invention, wherein the number may vary depending on the application.
  • FIG. 2 shows a schematic sectional representation of an arrangement comprising a line element according to the invention according to a second exemplary embodiment, which is connected to an adjacent line element
  • FIG. 2 is a schematic sectional view of an arrangement according to the invention
  • Fig. 3 is a schematic plan view of the arrangement of Fig. 3, and
  • FIG. 4 is an enlarged view of a detail of FIG .. 3
  • FIG. 1 shows a partially sectioned schematic illustration of a first embodiment of a line element 10 according to the invention and an adjacent line element 12 spaced from it.
  • the line element 10 shown for a line to be laid in the ground has an end section 14 that can be connected to the adjacent line element 12 via a screw connection.
  • the end portion 14 is provided with an external thread 16 which is screwed into an internal thread 18 which is formed at the end portion 14 of the adjacent conduit member 12.
  • a main seal 20 in the form of a lip seal and a safety seal 22 are arranged from a swellable material and received in annular grooves 26, wherein the safety seal in shape an O-ring is formed.
  • the main seal 20 is provided to seal the connection against ingress of liquid, such as groundwater.
  • FIG. 2 shows a schematic sectional view of an arrangement comprising a line element 10 according to the invention in accordance with a second exemplary embodiment, which is connected to an adjacent line element 12.
  • the conduit element 10 shown in Fig. 2 has an end portion 14 which is slidably latched onto an end portion 14 of the adjacent conduit member 12, wherein the locking connection is realized by means of a locking ring 24 in a formed on the inner surface 25 of the end portion 14 annular groove 26th
  • the locking ring 24 has an interruption 28 to facilitate the assembly, as shown in FIG. 3 and in particular from the enlarged detail view of FIG. 4 can be seen.
  • a main seal 20 in the form of a compression seal, which in turn is in the form of an O-ring, and a safety seal 22nd from a swellable material, which is also in the form of an O-ring, arranged and received in annular grooves 26.
  • the main seal 20 is provided to prevent the connection against penetrating liquid such. B. seal groundwater.
  • the safety seal 22 is intended to ensure the tightness of the connection in case of existing leakage -. B. due to slippage of the main seal 20 or due to damage to the main seal 20 - restore.
  • a secondary seal 30 in the form of a compression seal 30 is arranged at the end portion 14 such that the safety seal 22 between the main seal 20 and the secondary seal 30 is located.
  • the secondary seal 30 is provided to seal the connection between the two line elements 10, 12 against leakage of liquid or fluid, provided that a flow through the two line elements 0, 12 with a fluid or a liquid, such as wastewater is provided.
  • the safety seal 22 assumes a double function. It serves to restore or maintain the tightness in the event of a leak at the main seal 20 and / or the restoration or maintenance of the tightness in the case of an existing leak at the secondary seal 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

L'invention concerne un élément de conduite (10) pour une conduite souterraine, comportant au moins une partie terminale (14) pouvant être reliée à un élément de conduite adjacent (12), la partie terminale (14) comprenant au moins un joint principal (20) et au moins un joint de sécurité (22). Le joint principal (20) est prévu pour étancher la liaison avec l'élément de conduite adjacent (12) contre l'entrée de liquide et le joint de sécurité peut être activé par le contact avec un liquide et est prévu pour rétablir l'étanchéité de la liaison en cas de non-étanchéité. L'invention concerne également une conduite souterraine comportant au moins un élément de conduite (10).
PCT/EP2010/006568 2009-11-03 2010-10-27 Élément de conduite pour une conduite souterraine Ceased WO2011054468A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10771665A EP2496872A1 (fr) 2009-11-03 2010-10-27 Élément de conduite pour une conduite souterraine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009014844U DE202009014844U1 (de) 2009-11-03 2009-11-03 Leitungselement für eine im Erdreich zu verlegende Leitung
DE202009014844.0 2009-11-03

Publications (1)

Publication Number Publication Date
WO2011054468A1 true WO2011054468A1 (fr) 2011-05-12

Family

ID=43478139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/006568 Ceased WO2011054468A1 (fr) 2009-11-03 2010-10-27 Élément de conduite pour une conduite souterraine

Country Status (3)

Country Link
EP (1) EP2496872A1 (fr)
DE (1) DE202009014844U1 (fr)
WO (1) WO2011054468A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011050823U1 (de) 2011-07-27 2012-10-29 Rehau Ag + Co. Leitungselement
DE102011114913A1 (de) * 2011-10-06 2013-04-11 Deutz Ag Schnellverschluss für Abgasrohre
EP2757296A1 (fr) * 2013-01-22 2014-07-23 Scandinavian No-Dig Centre ApS Procédé et système de remplacement de tuyaux existants

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915460A (en) * 1972-10-26 1975-10-28 Pont A Mousson Pipe sealing joint, closure ring for such a joint and application of said joint in particular to hydrocarbon-conveying pipes
DE3402198A1 (de) 1984-01-24 1985-05-23 Karl Schöngen KG, 3320 Salzgitter Schutzrohr fuer elektrische leitungen
DE19536703A1 (de) 1994-10-12 1996-04-18 Karl Schoengen Kg Kunststoff R Rohr, insbesondere Kunststoffrohr, und Rohrverbindung aus solchen Rohren
DE20017639U1 (de) 2000-10-14 2001-01-25 Karl Schöngen KG Kunststoff-Rohrsysteme, 38229 Salzgitter Rohr, insbesondere Schutzrohr aus Kunststoff
DE10139984A1 (de) 2001-08-21 2003-03-06 Karl Schoengen Kg Kunststoff R Vorrichtung zur Sicherung einer Rohrverbindung
EP1375114A2 (fr) 2002-06-28 2004-01-02 Karl Schöngen KG, Kunststoff-Rohrsysteme Procédé pour la connection d'un premier et second tube en matière synthétique et tube
WO2004005665A2 (fr) 2002-07-06 2004-01-15 Weatherford/Lamb, Inc. Materiels tubulaires de raccordement
EP1384933A2 (fr) * 1999-09-28 2004-01-28 Tokai Rubber Industries, Ltd. Raccord rapide
EP1705418A2 (fr) 2005-03-24 2006-09-27 Karl Schöngen KG, Kunststoff-Rohrsysteme Tuyau en matière plastique et procédé et appareil pour assembler deux tuyaux en matière plastique
DE202008005936U1 (de) * 2008-04-29 2009-09-03 Pt-Poly-Tec Gmbh Vertrieb Und Herstellung Von Dichtungssystemen Kupplung zum Verbinden zweier Rohrenden mit sekundärer Quelldichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1770317A3 (fr) * 2005-08-05 2007-06-06 DS Dichtungstechnik GmbH Protection élastomère contre les racines et étanchéité protégeant les joints de conduites contre l'intrusion de racines
DE102006051810A1 (de) * 2005-11-06 2007-05-10 Lammering, Martina Partliner mit gelenkiger Quelldichtung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915460A (en) * 1972-10-26 1975-10-28 Pont A Mousson Pipe sealing joint, closure ring for such a joint and application of said joint in particular to hydrocarbon-conveying pipes
DE3402198A1 (de) 1984-01-24 1985-05-23 Karl Schöngen KG, 3320 Salzgitter Schutzrohr fuer elektrische leitungen
DE19536703A1 (de) 1994-10-12 1996-04-18 Karl Schoengen Kg Kunststoff R Rohr, insbesondere Kunststoffrohr, und Rohrverbindung aus solchen Rohren
EP1384933A2 (fr) * 1999-09-28 2004-01-28 Tokai Rubber Industries, Ltd. Raccord rapide
DE20017639U1 (de) 2000-10-14 2001-01-25 Karl Schöngen KG Kunststoff-Rohrsysteme, 38229 Salzgitter Rohr, insbesondere Schutzrohr aus Kunststoff
DE10139984A1 (de) 2001-08-21 2003-03-06 Karl Schoengen Kg Kunststoff R Vorrichtung zur Sicherung einer Rohrverbindung
EP1375114A2 (fr) 2002-06-28 2004-01-02 Karl Schöngen KG, Kunststoff-Rohrsysteme Procédé pour la connection d'un premier et second tube en matière synthétique et tube
WO2004005665A2 (fr) 2002-07-06 2004-01-15 Weatherford/Lamb, Inc. Materiels tubulaires de raccordement
EP1705418A2 (fr) 2005-03-24 2006-09-27 Karl Schöngen KG, Kunststoff-Rohrsysteme Tuyau en matière plastique et procédé et appareil pour assembler deux tuyaux en matière plastique
DE202008005936U1 (de) * 2008-04-29 2009-09-03 Pt-Poly-Tec Gmbh Vertrieb Und Herstellung Von Dichtungssystemen Kupplung zum Verbinden zweier Rohrenden mit sekundärer Quelldichtung

Also Published As

Publication number Publication date
EP2496872A1 (fr) 2012-09-12
DE202009014844U1 (de) 2011-03-17

Similar Documents

Publication Publication Date Title
EP3428498B1 (fr) Tube, en particulier tube en plastique pour conduites d'évacuation d'eaux usées
EP2404097B1 (fr) Système de raccord pour le raccord d'un tuyau à un tuyau principal
EP2603728A2 (fr) Système pour étanchéifier un système de conduites
WO2011054468A1 (fr) Élément de conduite pour une conduite souterraine
EP3205917B1 (fr) Dispositif de fixation de tubes ou de tuyaux
EP2113702B1 (fr) Embrayage destiné à la liaison de deux extrémités de tuyaux, doté d'une étanchéité de source secondaire
DE202015106969U1 (de) Anschlusssystem
DE202007018296U1 (de) Dichtungssystem für Rohr- und Leitungsdurchführungen
DE102013101462A1 (de) Einbaugarnitur
DE202013101069U1 (de) Verbindungsmuffe
DE102010032199B3 (de) Dichtring für Schraubmuffenverbindungen
WO2011054469A1 (fr) Manchette pour réaliser une liaison entre deux éléments tubulaires en matériau polymère
DE202015106967U1 (de) Anschlusssystem
DE102013101463B4 (de) Einbaugarnitur
EP2400196A2 (fr) Elément de conduite
DE202011050823U1 (de) Leitungselement
DE202012010724U1 (de) Tiefbaurohrsystem mit wenigstens einem Betonhohlkörper sowie Abschlusselement hierfür
DE10152596A1 (de) Verfahren und Vorrichtung zum Anschließen einer wasserdichten Kunststoffschicht
DE3926879A1 (de) Muffenrohrverbindung mit doppeldichtung
DE10154747A1 (de) Einrichtung zum Prüfen auf Dichtigkeit einer Dichtanordnung von Rohren oder Schachtbauwerken
DE19611682C1 (de) Stutzen für Betonrohre
EP2778490A2 (fr) Elément de conduit
DE102018109998B4 (de) Rohranschlusssystem
DE2036217A1 (de) Anschlußteil an einem Leitungssystem
DE3841330A1 (de) Elastischer dichtungsring fuer eine als gleitringdichtung ausgebildete steckverbindung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10771665

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2010771665

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2010771665

Country of ref document: EP