EP3375945A1 - Dispositif de fermeture pour un clapet anti-retour - Google Patents

Dispositif de fermeture pour un clapet anti-retour Download PDF

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Publication number
EP3375945A1
EP3375945A1 EP18170727.4A EP18170727A EP3375945A1 EP 3375945 A1 EP3375945 A1 EP 3375945A1 EP 18170727 A EP18170727 A EP 18170727A EP 3375945 A1 EP3375945 A1 EP 3375945A1
Authority
EP
European Patent Office
Prior art keywords
connecting element
sleeve
closure device
closing
head
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
Application number
EP18170727.4A
Other languages
German (de)
English (en)
Other versions
EP3375945B1 (fr
Inventor
Detlev Demmig
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.)
Strate Technologie fuer Abwasser GmbH
Original Assignee
Strate Technologie fuer Abwasser GmbH
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 Strate Technologie fuer Abwasser GmbH filed Critical Strate Technologie fuer Abwasser GmbH
Priority to PL18170727T priority Critical patent/PL3375945T3/pl
Publication of EP3375945A1 publication Critical patent/EP3375945A1/fr
Application granted granted Critical
Publication of EP3375945B1 publication Critical patent/EP3375945B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E03F7/04—Valves for preventing return flow

Definitions

  • the invention relates to a closure device for a non-return valve of a pipeline according to the preamble of claim 1.
  • Backflow preventers are components which are used in particular in piping systems, but are also used wherever the flow of a medium should be directed.
  • closure devices usually have a closure device which can open and close automatically and thus allows the flow of the medium through the backflow preventer in only one direction.
  • closure devices generally have a rotatably mounted closing element which is rigidly secured to an axis, wherein the axis of rotation of the axis of rotation is aligned perpendicular to the flow direction of the closure device.
  • the closing operation of the closing element can be active or passive. While in passive closure devices, the closure element is spent after switching off the feed pump or in case of failure due to the back flowing residual water and / or gravity in a closed position in which the closure device prevents backflow of the residual water, actively working closure devices have a reset device, the supports the closing process of the closing element and actively accelerates. Moreover, it is necessary that the closing element rests without gaps on a contact surface of the housing of the non-return valve for a secure seal.
  • a passive closure device in which the closing element is arranged freely pivotable in a receptacle of the non-return valve and is without effect of other external forces due to gravity in a closed position. Only through the operation of the Feed pump, the closing element is spent from its closed position into a flow position due to the water pressure generated by the feed pump.
  • the closing element shown in this document is mechanically rigidly connected by means of two striking plates with the axis of rotation. Due to the rigid connection of the closing element with the axis of rotation, it is in the DE 199 10 254 A1 described closure device not possible to compensate for manufacturing tolerances and angular error of the contact surface of the housing of the backflow preventer.
  • a closure device in which the closing element is connected by means of a connecting element with the striking plate.
  • the connecting element described in the document is made of metal and has a cross section in the form of a mushroom head.
  • This connecting element is positioned in a correspondingly shaped recess of the striking plate, whereby a movable connection between the connecting element and the striking plate is formed. Due to this connection, the closing element can perform rotational movements and to a slight extent tilting movements. This makes it possible for the closure element described to compensate for manufacturing tolerances and angular errors of the contact surface of the housing of the non-return valve.
  • connection elements which are designed as a mushroom head or more generally as a joint connection, in particular as a socket joint connection, usually move two components relative to each other. Due to this relative movement, frictional forces occur on both the joint body or mushroom head and the joint socket. The frictional forces lead to wear of the components.
  • the frictional forces and the associated wear can be enhanced by particulate matter suspended in the medium, in particular sand and other fine-grained materials. These suspended solids can penetrate into the gap between the joint body or mushroom head and the socket and provide additional frictional forces.
  • the formation of the connecting element as shown in the DE 10 2010 051 156 A1 is described, the risk that larger particles in the medium penetrate into the gap between the joint body or mushroom head and socket and impede the elements in their relative movement to each other. Consequently, it is possible that no tilting movement can take place from the closing element relative to the striking plate more and the closure device is no longer able to compensate for manufacturing tolerances and angular errors of the contact surface of the housing of the non-return valve.
  • the present invention is therefore based on the object to reduce the mentioned problems in closing a closure device for a backflow preventer and in particular to provide a closure device, the compensation of manufacturing tolerances and angular errors of the contact surface of a housing of a backflow preventer and a reduction in the closing of the closure device allows for a backflow preventer resulting vibrations.
  • the closure device according to the invention for a non-return valve of a pipeline comprises a closing element, a rotatably mounted strike plate and a connecting element which mechanically connects the closing element to the striking plate, wherein the connecting element, which has a head area and a foot area, consists of an elastic material, in particular of polyurethane ( PUR).
  • PUR polyurethane
  • a connecting element made of an elastic material between the closing element and the striking plate makes it possible to compensate for manufacturing tolerances and angular errors of the contact surface of the housing of the non-return valve and, moreover, to reduce the vibrations occurring during closing of the closure device within the pipeline.
  • the connecting element forms a flexible connection between the closing element and the striking plate, which is deformed due to external forces.
  • the external forces deforming the connector become on the one hand by the weight of the closing element and on the other hand generated by the impulse upon impact of the closing element on the contact surface of the housing of the backflow preventer.
  • the closure device according to the invention is capable of producing manufacturing tolerances and angular errors of the contact surface of a housing balance a backflow preventer.
  • connection element of an elastic material is that, in contrast to connecting elements in the form of joints, the connecting element can be integrally formed. While in the use of a joint, in particular a ball or socket joint, the connection of the closing element with the strike plate via at least two components which perform a relative movement against each other, which leads to frictional forces, such friction forces do not occur in a one-piece connector made of an elastic material on.
  • a non-return valve with a closure device according to the invention is the use in a pipeline system and / or an inlet and / or outlet of a wastewater lifting plant.
  • Wastewater lifting plants are automatically operating systems that periodically or in the presence of a certain level of a filled with waste water reservoir pump out the wastewater from just this reservoir and feed a secondary piping system. Wastewater lifting plants are usually at the lowest point of the conveyor line, which is why after switching off the feed pump, which pumps the wastewater from the reservoir, residual water, which is located between the pump and vertex of the conveyor line, back towards the pump or reservoir. Due to the backflow of residual water, damage may occur to the wastewater lifting plant and in particular to the feed pump or the pipelines. In order to avoid damage to the feed pump and / or the pipeline, today's wastewater lifting systems are usually provided with a backflow preventer, which prevents the backflow of the residual water in the direction of the feed pump.
  • the connecting element is a damping element.
  • the connecting element In order to reduce not only the compensation of manufacturing tolerances and angular errors of the contact surface of the housing of a backflow preventer and the vibrations within a pipeline and / or a backflow preventer, in particular within the closure device, it makes sense to design the connecting element as a damping element. This is the connecting element such that it is able to absorb kinetic energy that would lead to vibrations within the closure device, the non-return valve and / or the pipeline upon impact of the closure element on the abutment surface of the non-return valve.
  • the connecting element described in the prior art is unable to deform in the axial direction defined along the central axis of the connecting element and thus to absorb kinetic energy of the closure device.
  • the distance between the closing element and the striking plate remains the same except for tilting of the closing element relative to the striking plate.
  • the connecting element according to the invention is made of an elastic material and so between the striking plate and the Attached closing element that it can deform elastically in the axial direction along the central axis of the connecting element. Consequently, the connecting element is momentarily compressed upon impact of the closing element on the contact surface of the housing of the backflow preventer, thus reducing the distance between the closing element and the striking plate and thus absorbs energy that would lead to vibrations in a connecting element according to the prior art.
  • the connecting element has a T-shaped cross section.
  • the lower vertical part of the connecting element is referred to as foot area.
  • the horizontal, upper area, which adjoins the upper side of the foot area, is referred to as the head area of the connecting element (see also FIG Fig. 2c ).
  • Such a configuration makes it possible to connect the strike plate to the head area and the closing element via a separate attachment to the connecting element.
  • Such attachment allows the axial movement of the connecting element along the central axis of the connecting element and thus the damping effect of the connecting element.
  • the damping properties are improved, the farther away the attachment of the striking plate is arranged with the connecting element from the central axis of the connecting element.
  • edge region is meant in particular that part of the head region of the connecting element which has a larger diameter than the diameter of the foot region of the connecting element.
  • the connecting element Due to the separate connection of closing element and striking plate to the connecting element, the connecting element is able to carry out both tilting movements and movements along the central axis of the connecting element.
  • the connecting element has a recess on an underside of the head region.
  • the recess on the bottom and / or top of the head area Through the recess on the bottom and / or top of the head area, the elastic deformation properties of the connecting element and Thus, the ability to compensate for manufacturing tolerances and angular errors of the contact surface of the housing of the backflow preventer increases. In this case, the recess on the bottom and / or top of the head area is not configured continuously.
  • the recess is arranged rotationally symmetrical about the foot region of the connecting element.
  • a symmetrical configuration of the recess around the foot region has the advantage that the connecting element has no preferred direction in which a tilting of the connecting element is simplified.
  • connection element along a central axis has a through the head portion and the foot portion of the connecting element through opening in which a sleeve, in particular a threaded sleeve force, shape and / or cohesively can be arranged.
  • the positive, positive and / or cohesive arrangement of a continuous sleeve, in particular a threaded sleeve, along the central axis of the connecting element makes it possible to connect the closing element in the foot region of the connecting element by means of a fastening element with the connecting element.
  • an upper edge of the sleeve, in particular the threaded sleeve does not terminate flush with an upper side of the head region of the connecting element.
  • a protruding over the top of the head portion sleeve has in the case of a continuous through the connecting element fastener has the advantage that the fastening element, should this in the projecting beyond the sleeve portion has a larger diameter than the sleeve, not resting on the top of the connecting element. Consequently, a gap is created between the fastening element and the upper side of the head region of the connecting element. This gap ensures that the elastic properties of the connecting element are not influenced by the fastening element.
  • the connecting element by means of a fastening element, which within the sleeve, in particular the threaded sleeve of the connecting element and a recess of the closing element can be arranged, connected to the closing element.
  • the fastener is connected by the sleeve through with the closing element. This results in a positive and / or non-positive connection of the connecting element with the closing element.
  • For the connection between closing element and connecting element screw connections have been found to be advantageous.
  • the connecting element has at least one opening which is at a distance from the central axis of the connecting element and extends through the head region of the connecting element, in which a sleeve can be arranged in a force, shape and / or material fit.
  • connecting element is connected by means of a fastening element, which can be arranged within the sleeve of the connecting element and a recess of the striking plate, with the strike plate.
  • the arrangement of the sleeve in the head region of the connecting element makes it possible to reinforce the region in which the fastening element is arranged. Consequently, damage to the connector and possibly associated tearing out of the fastener are prevented.
  • the fastener is connected by the sleeve through with the strike plate. This results in a positive and / or non-positive connection of the connecting element with the strike plate. For the connection between the strike plate and fastener screw connections have been found to be advantageous.
  • An advantageous embodiment of the invention provides that between the sleeve, in particular the threaded sleeve and the connecting element a demolition disc can be arranged.
  • connection closing element and strike plate Due to the selected type of connection closing element and strike plate are connected to each other only via the connecting element. Should it come to material fatigue of the connecting element, it would be possible for the sleeve, in particular the threaded sleeve, to break out of the connecting element and to completely tear off the closing element from the striking plate.
  • the fastening element which connects the closure element and the connection element together, is formed continuously through the connection element.
  • a tear-off disc is arranged between the fastening element and the upper side of the head region of the connecting element.
  • This tear-off writing has a diameter that is greater than the diameter of the foot region of the connecting element and the diameter of the recess of the striking plate in the connecting element is arranged. This ensures that, in the event of damage to the connecting element, the closing element does not tear off completely from the striking plate.
  • the tear-off disc has a diameter which is greater than the diameter of the sleeve, in particular the threaded sleeve, preferably larger than the diameter of the foot region of the connecting element.
  • the sleeve, in particular the threaded sleeve breaks out of the connecting element.
  • the fastening element of the closing element and the sleeve, in particular the threaded sleeve in which the fastening element of the closing element is arranged do not detach from the connecting element.
  • the tear-off disc may have a diameter which is greater than the diameter of the foot region of the connecting element or the diameter of the recess of the striking plate in which the connecting element can be arranged.
  • the tear-off letter can be arranged such that a gap is created between the upper side of the head region of the connecting element and the underside of the tear-off disk.
  • the tear-off is only on the not flush with the top of the head portion of the connecting element final sleeve, in particular the threaded sleeve.
  • a cavity is formed between the underside of the tear-off disc and the top of the head region of the connecting element.
  • Fig. 1 shows a closing element 12 and a striking plate 14 of a closure device 10 according to the invention, which are interconnected by means of a connecting element 16 according to the invention, in two different representations.
  • Fig. 1a shows a spatial representation of said components.
  • the figure shows a fastening element 18 for fastening the closing element 12 to the connecting element 16.
  • the tear-off disk 24 arranged above the upper side 20 of the head region 22 of the connecting element 16 can be seen.
  • the striking plate 14 is fastened to the connecting element 16 by means of fastening elements 26.
  • a sealing ring 28 is arranged, which is connected via separate fastening elements 30 with the closing element 12.
  • Fig. 1b shows a closing element 12 which is fastened by means of a connecting element 16 according to the invention to a striking plate 14, a closure device 10 according to the invention in a plan view.
  • the central or axial arrangement of the fastening element 18, with which the closing element 12 is fastened to the connecting element 16, can be seen.
  • the figure shows the above the top 20 of the connecting element 16 arranged tear-off 24.
  • the fasteners 26 which connect the strike plate 14 with the connecting element 16, and the fastening elements 30, which attach a sealing ring 28 on the underside of the closing element 12 represented.
  • Fig. 2 shows a connecting element 16 according to the invention in a spatial representation, a plan view and a cross-sectional view.
  • Fig. 2a is the connecting element 16 according to the invention shown in a three-dimensional view.
  • In the edge region of the head region 22 or spaced from the central axis 32 of the connecting element 16 are at regular intervals both to the central axis 32 and to each other sleeves 34, insbeosndere six sleeves 34 are arranged.
  • a sleeve 36 Central in the connecting element 16 is a sleeve 36, in particular a threaded sleeve arranged.
  • This sleeve 36 is arranged continuously in the connecting element 16 and does not close flush with the upper side 20 of the connecting element 16 off. In particular, the sleeve 36 projects beyond the upper side 20 of the connecting element 16.
  • Fig. 2b shows a connecting element 16 according to the invention in a plan view.
  • a sleeve 36 In the center or along the central axis 32 of the connecting element 16 is a sleeve 36, in particular a threaded sleeve and in the edge region of the head portion 22 and spaced from the central axis 32 of the connecting element 16 are sleeves 34, in particular six sleeves 34 which are at a uniform distance to both Central axis 32 and each other, arranged.
  • Fig. 2c shows a connecting element 16 according to the invention in a cross-sectional view along the axis AA (s. Fig. 2b ).
  • the connecting element 16 has a T-shaped cross section, which can be subdivided into a head region 22 and a foot region 38. In this case, the head region 22 has a larger diameter than the foot region 38.
  • sleeves 34 are arranged in the edge region of the head portion 22 and spaced from the central axis 32 of the connecting element 16 arranged. These sleeves 34 are formed continuously through the head portion 22 of the connecting element 16.
  • a sleeve 36 in particular a threaded sleeve is arranged.
  • This sleeve 36 does not terminate flush with the top 20 of the head portion 22 of the connecting element 16, but the sleeve 36 is above the top 20 of the head portion 22 of the connecting element 16 via.
  • the Bottom 40 of the head portion 22 of the connecting element 16 has a recess 42 which extends radially symmetrically about the foot portion 38 of the connecting element 16, on.
  • FIG. 3 shows two cross sections along the axes BB and CC (s. Fig. 1 b) of individual components of a closure device 10 according to the invention
  • Fig. 3a is a closing element 12 which is connected via a connecting element 16 according to the invention with a striking plate 14, shown in a cross-sectional view along the axis BB.
  • the striking plate 14 is arranged on the underside 40 of the connecting element 16. It can be seen that the thickness of the striking plate 14 is less than the height of the foot portion 38 of the connecting element 16. Since the closing element 12 is arranged on the underside of the foot portion 38 of the connecting element 16, formed between the underside of the striking plate 14 and the top of the Closing member 12 an upwardly and downwardly limited cavity 44.
  • the recess of the strike plate 14, in which the foot portion 38 of the connecting element 16 is arranged, has the same diameter as the foot portion 38 of the connecting element 16.
  • the closing element 12 is connected to the connecting element 16 by means of a fastening element 18, which runs through a sleeve 36.
  • the sleeve 36 is not flush with the top 20 of the head portion 22 of the connecting element 16 from.
  • the sleeve 36 projects beyond the upper side 20 of the head region 22 of the connecting element 16.
  • a demolition disc 24 is arranged at the top.
  • the tear-off disc 24 has a diameter which is greater than the diameter of the foot region 38 of the connecting element 16 or the diameter of the recess of the striking plate 14, in which the connecting element 16 is arranged. Due to the fact that the sleeve 36 projects beyond the upper side 20 of the head region 22 of the connecting element 16 and the tear-off disc 24 is arranged on the upper side of the sleeve 36, a cavity is created between the underside of the tear-off disc 24 and the upper side 20 of the head region 22 of the connecting element 16 48th
  • Fig. 3b shows a section of a closure device 10 according to the invention in cross section along the axis CC (see Fig. 1 b) .
  • the section CC passes through the fastening elements 26, which connect the striking plate 14 with the connecting element 16. Consequently, compared to Fig. 3a the sleeves 34 of the connecting element 16 shown.
  • These sleeves 34 are arranged continuously in the edge region of the head region 22 of the connecting element 16. In the sleeves 34 and the recesses 46, the fastening elements 22 which connect the striking plate 14 with the connecting element 16 are arranged.
  • Fig. 4 shows a cross section of a backflow preventer 50, in which a closure device 10 according to the invention with a connecting element according to the invention 16 is installed.
  • the closure device is in the illustrated figure in a closed state.
  • the sealing ring 28 bears against the contact surface 52 of the housing 54 of the non-return valve 50.
  • a backflow of the residual water against the flow direction 56 is prevented.
  • the closing element 12 pivots in a largely horizontal position and releases the non-return valve 50 in the flow direction 56.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Pipe Accessories (AREA)
  • Massaging Devices (AREA)
EP18170727.4A 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour Active EP3375945B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18170727T PL3375945T3 (pl) 2014-09-08 2015-09-03 Urządzenie zamykające dla zaworu blokującego przepływ zwrotny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014112867.2A DE102014112867B4 (de) 2014-09-08 2014-09-08 Verschlussvorrichtung für einen Rückflussverhinderer
EP15183613.7A EP2993276B1 (fr) 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15183613.7A Division EP2993276B1 (fr) 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour
EP15183613.7A Division-Into EP2993276B1 (fr) 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour

Publications (2)

Publication Number Publication Date
EP3375945A1 true EP3375945A1 (fr) 2018-09-19
EP3375945B1 EP3375945B1 (fr) 2020-05-13

Family

ID=54064168

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15183613.7A Active EP2993276B1 (fr) 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour
EP18170727.4A Active EP3375945B1 (fr) 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP15183613.7A Active EP2993276B1 (fr) 2014-09-08 2015-09-03 Dispositif de fermeture pour un clapet anti-retour

Country Status (5)

Country Link
EP (2) EP2993276B1 (fr)
DE (1) DE102014112867B4 (fr)
DK (2) DK3375945T3 (fr)
HR (1) HRP20210626T1 (fr)
PL (2) PL2993276T3 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2229121A1 (de) * 1972-06-15 1974-01-10 Hans Schroeder Absperrvorrichtung fuer rueckflutendes kanalisationswasser
FR2439347A1 (fr) * 1978-10-18 1980-05-16 Etude Realisa Tolerie Mecaniqu Dispositif d'ouverture-fermeture a volet d'obturation interchangeable, notamment pour gaines de ventilation utilisant un fluide agressif ou polluant
DE3128340A1 (de) * 1980-07-25 1982-03-04 Nissan Motor Co., Ltd., Yokohama, Kanagawa "schwingungsdaempfendes verbindungsstueck"
EP0531824A1 (fr) * 1991-09-12 1993-03-17 Ford-Werke Aktiengesellschaft Support élastique pour la fixation
DE19910254A1 (de) 1999-03-08 2000-09-28 Kessel Gmbh Hebeanlage für Abwasser
US20020104567A1 (en) * 2000-06-08 2002-08-08 John Matthews Swing check valve
DE102010051156A1 (de) 2010-11-15 2012-05-16 Viega Gmbh & Co. Kg Rückschlagventil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312290A (en) * 1940-11-16 1943-02-23 Crane Co Valve
US2925827A (en) * 1955-10-14 1960-02-23 Crane Co Swing check valve
US3972504A (en) * 1974-12-02 1976-08-03 Ametek, Inc. Main steam isolation check valve
US4120318A (en) * 1977-09-12 1978-10-17 Acf Industries, Incorporated Dampening means for swing check valve
JPH05332460A (ja) * 1992-06-03 1993-12-14 Hans D Baumann 偏心回転プラグ弁
US5671769A (en) * 1995-10-27 1997-09-30 H-Tech, Inc. Swing check valve and method for repairing same
CA2310991A1 (fr) * 1999-07-06 2001-01-06 Stephen C. Florence Clapet de non-retour a battant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2229121A1 (de) * 1972-06-15 1974-01-10 Hans Schroeder Absperrvorrichtung fuer rueckflutendes kanalisationswasser
FR2439347A1 (fr) * 1978-10-18 1980-05-16 Etude Realisa Tolerie Mecaniqu Dispositif d'ouverture-fermeture a volet d'obturation interchangeable, notamment pour gaines de ventilation utilisant un fluide agressif ou polluant
DE3128340A1 (de) * 1980-07-25 1982-03-04 Nissan Motor Co., Ltd., Yokohama, Kanagawa "schwingungsdaempfendes verbindungsstueck"
EP0531824A1 (fr) * 1991-09-12 1993-03-17 Ford-Werke Aktiengesellschaft Support élastique pour la fixation
DE19910254A1 (de) 1999-03-08 2000-09-28 Kessel Gmbh Hebeanlage für Abwasser
US20020104567A1 (en) * 2000-06-08 2002-08-08 John Matthews Swing check valve
DE102010051156A1 (de) 2010-11-15 2012-05-16 Viega Gmbh & Co. Kg Rückschlagventil

Also Published As

Publication number Publication date
DK3375945T3 (da) 2020-08-03
HRP20210626T1 (hr) 2021-06-11
EP3375945B1 (fr) 2020-05-13
DK2993276T3 (da) 2021-04-19
PL3375945T3 (pl) 2020-11-16
EP2993276A3 (fr) 2016-06-15
DE102014112867B4 (de) 2016-06-23
EP2993276A2 (fr) 2016-03-09
EP2993276B1 (fr) 2021-01-27
PL2993276T3 (pl) 2021-07-12
DE102014112867A1 (de) 2016-03-10

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