EP4240994A1 - Robinet-vanne - Google Patents

Robinet-vanne

Info

Publication number
EP4240994A1
EP4240994A1 EP21802329.9A EP21802329A EP4240994A1 EP 4240994 A1 EP4240994 A1 EP 4240994A1 EP 21802329 A EP21802329 A EP 21802329A EP 4240994 A1 EP4240994 A1 EP 4240994A1
Authority
EP
European Patent Office
Prior art keywords
valve
seat
seal
valve rod
closure body
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.)
Pending
Application number
EP21802329.9A
Other languages
German (de)
English (en)
Inventor
Jens Burmester
Jörg PIEPLOW
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.)
GEA Tuchenhagen GmbH
Original Assignee
GEA Tuchenhagen 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 GEA Tuchenhagen GmbH filed Critical GEA Tuchenhagen GmbH
Publication of EP4240994A1 publication Critical patent/EP4240994A1/fr
Pending 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
    • F16K1/446—Details of seats or valve members of double-seat valves the seats being in series with additional cleaning or venting means between the two seats

Definitions

  • the invention relates to a lifting valve according to the preamble of the first claim.
  • Drives of the generic type are used to control valves in plants for the production of food, beverages, medicines and fine chemical products and in biotechnology.
  • WO 2009/115255 A1 and EP 0646 741 B1 show arrangements through which the seal can be exposed in a cleaning step for cleaning. Both documents show such arrangements, EP 0646 741 B1 additionally shows cleaning of the drive-side seal, which is designed to slide on a closing body section. An even older document is DE 41 18 874 A1, which also shows how to clean the drive-side seal.
  • the task was to create a lifting valve with improved cleaning of a seal.
  • the invention is solved by a lifting valve with the features of the first claim.
  • the lift valve is provided with a housing, a first port, a second port, a passage provided between the ports, an am Passage formed valve seat, a closing element which has a closure body which can be brought into sealing contact with the valve seat, and a valve rod, and a seal which cooperates with a seat equipped. Since the seat includes a closed-position seat, which is attached to a component that can be displaced against the valve rod, the distance from the valve disk to the seal can be adjusted. Thanks to the claimed arrangement, the components that are important for cleaning are no longer rigidly coupled to one another. With fewer compromises in the movement of the components, the best cleaning position can be set, which improves the cleaning result.
  • a third valve rod accommodating the second valve rod, is provided in the lift valve.
  • the third valve rod can be coupled to the displaceable component and to an additional drive.
  • the hygienic properties of this lift valve are improved if an inner seal is arranged to interact with the displaceable component.
  • a further improvement in the hygienic properties occurs when the closure body and the second closure body delimit a leakage space in this lifting valve.
  • This space can accommodate excess substances, cleaning fluid and the like without these substances getting into the actual product space.
  • a surface be provided with which a force is brought about in the case of fluid in an interior space, which compensates for a force acting on the closure body.
  • the valve is pressure-balanced.
  • a pressurized fluid inside the valve only exerts largely balancing forces on the closing element.
  • the displaceable component includes a depression for discharging cleaning fluid in the direction of the valve rod.
  • the deepening creates sloping walls that promote liquid transport.
  • the indentation can be conically shaped, for example. The cleaning of the valve is improved because the displaceable component can be rinsed around and the cleaning agent is reliably drained off, so that a targeted flow of cleaning agent can be set.
  • the displaceable component is prevented from being displaced unintentionally, for example during operation with the product. Instead, the displaceable component remains in the sealing position, in that a shoulder is provided on the valve rod and the displaceable component can be brought into a non-positive connection with the shoulder.
  • the cleanability of the displaceable component is increased by providing a pot-shaped housing part on a side of the housing facing a drive, in which case the displaceable component can be accommodated.
  • This structure reduces the number of component interfaces and allows the sliding component to be flushed with detergent for thorough cleaning.
  • the displaceable component in order to discharge cleaning fluid, comprises a passage which receives the cleaning fluid from an interior space of the cup-shaped component. This allows the cleaning agent to be discharged via the gaps between the valve rods and prevents the cleaning agent from accumulating in the interior.
  • the exemplary embodiments described below show double seat valves. Basically, the invention is not limited to these and can also be used in single-seat and similar valves of the application area mentioned at the outset. In double-seat valves, however, the advantages of improved cleaning are more important, since there are high hygienic requirements in their areas of application.
  • a double seat valve 1 is shown in a first exemplary embodiment in longitudinal section.
  • the double seat valve 1 has a housing 2 with a first connection 3 and a second connection 4. These connections 3 and 4 can be connected to the fluid-carrying components of a process plant. A passage 5 is provided in the housing between the connections 3 and 4, with which a fluid connection can be established between the connections.
  • a valve seat 6 is formed on passage 5 and surrounds an opening of passage 5 through which fluid can flow between ports 3 and 4.
  • a closing element 7 is provided in the housing 2 .
  • This comprises a closure body 8 which is in sealing contact with the valve seat 6 in FIG. This prevents fluid from flowing between ports 3 and 4, and the double seat valve is in a closed position.
  • the closing element 7 comprises a valve rod 9 connected to the closing body 8.
  • the valve rod 9 is operatively connected to a drive 10 coupled to the housing 2 .
  • This drive 10 is set up to move the closure body 8 along a longitudinal axis A. As part of this movement, the sealing contact between the valve seat 6 and the closure body 8 can be established on the one hand and released on the other. In the example shown, it is designed as a pneumatic drive.
  • a second closing element 11 which has a second closing body 12 , is arranged in the housing 2 of the double seat valve 1 . This can be brought into sealing contact with a second valve seat 13 which is formed on passage 5 . Such a sealing contact exists, for example, in the closed position of the double seat valve 1 shown in FIG.
  • the valve rod 9 of the closing element 7 can be designed at least in sections as a hollow rod, in which the second valve rod 14 is accommodated in a displaceable manner.
  • a leakage chamber 15 is formed between the first and second closure bodies 8 and 12 , which is sealed off from the connections 3 and 4 by the closure bodies 8 and 12 .
  • an outflow channel 16 which empties the leakage space 15 and connects the leakage space 15 to outflow structures outside of the double seat valve 1 .
  • An advantageously simple structure provides that the drive 10 brings the second closure body 12 into sealing contact with the first closure body 8 in order to open the double seat valve.
  • the first closure body 8 is taken along by the second closure body 12 during its lifting movement into the open position.
  • a seal 17 is provided which seals the closing element 7 against the housing 2 .
  • the closing element 7 can be displaced in relation to the seal 17 and there is sealing contact between the seal 17 and the closing element 7 at least in the closed position and in the open position of the double seat valve 1.
  • FIG. 2 shows a section of the double seat valve 1 in a slightly enlarged representation.
  • the closure body 8 is connected to the valve rod 9 on a side facing the drive.
  • the valve rod 9 has a rod section 19.
  • Balancer function means that the force that a fluid in the interior of the double seat valve 1 exerts on the closure body 8 is balanced by an opposing force on the rod section 19 .
  • This is achieved by a suitable choice of a surface 20 of the rod section 19 exposed to the fluid, for example by being shaped in the form of a ring surrounding the longitudinal axis A and the longitudinal axis A being aligned largely parallel to a surface normal to this surface 20 .
  • the rod section has a cylindrical surface 21.
  • An axis of rotation of the cylinder is aligned with the longitudinal axis A, preferably parallel to the direction of stroke.
  • This cylindrical surface 21 is designed to cooperate with the seal 17, in particular by sliding and sealing contact.
  • the sections of the closing element 7 can be several parts connected to one another.
  • the closing element can be a part formed from a base body.
  • a component 22 that can be displaced against the valve rod 9 is designed to interact with the rod section 19 and the seal 17 .
  • a surface facing radially outwards can be brought into stationary, sealing contact with the seal 17 and acts together with the seal 17 as a closed position seat 23 in the closed position of the double seat valve 1 .
  • the seal 17 is spared when the surface of the closed position seat 23 and the cylindrical surface 21 are designed to be flush with one another. By moving the displaceable component 22, the cylindrical surface 21 and the seat 23 in the closed position can be connected to one another to form a seat for the seal 17.
  • the displaceable component 22 is moved away from the rod section 19 along the longitudinal axis A.
  • the seal 17 is not in contact with the cylindrical surface 21 and not in contact with the closed position seat 23.
  • a gap S is formed between the cylindrical surface 21 and the closed position seat 23.
  • the gap S is in fluid communication with a channel 24 formed in the rod section 19 which in turn is in fluid communication with the discharge channel 16 . Cleaning fluid flows past the seal 17 and into the gap S in order to be discharged from there through the channel 24 .
  • an inner seal 25 is also cleaned, along which the cleaning fluid flows from the gap S to the channel 24 in a cleaning manner.
  • the inner seal 25 can be brought into sealing contact with an inner seat 26 formed on the section 19 in order to seal the rod section 19 and the displaceable component 22 against one another, for example in the closed position according to FIG.
  • Part of the cleaning fluid flowing between the seal 17 and the movable component 22 does not enter the gap S, but instead flows between the seal 17 and the seat 23 in the closed position. As a result, seal 17 and closed position seat 23 are cleaned.
  • This part of the cleaning fluid gets into an interior space 27 of a cup-shaped housing part 28 which is connected to the housing 2 .
  • a passage 29 in the displaceable component 22 establishes a fluid connection with the channel 24 in order to discharge the cleaning fluid from the cup-shaped housing part 28 and ultimately from the double seat valve 1 .
  • the displaceable component 22 is connected to a one-piece or multi-piece third valve rod 30 .
  • This is designed as a hollow rod and accommodates the valve rod 9 and the second valve rod 14 .
  • the third valve rod 30 passes through the pot-shaped housing part 28 and its interior 27 and emerges from the housing part 28 .
  • a rinsing inlet 31 can be provided on the pot-shaped housing part 28, through which rinsing inlet 30 cleaning agent can flow. This is taken up by a flow guide 32 which is flow-connected to the flushing inlet and surrounds the area of the passage. The cleaning of the third valve rod 30, the area of the passage and the interior 27 are improved in this way.
  • the drive 10 includes an additional drive 33, which can be of modular design and is arranged on a side of the drive facing the top-shaped housing part 28 to simplify the construction.
  • the third valve rod 30 projects into the auxiliary drive 33.
  • a piston 34 is slidably provided in the auxiliary drive 33 on it.
  • a pressure medium inlet 35 enables a pressure medium to be admitted, which acts on the piston 34 and causes it to be displaced along the longitudinal axis A.
  • the third valve rod 30 has a first stop 36. This can be shaped as a step or shoulder, which is directed radially, with respect to the longitudinal axis A, outwards.
  • the movement of the piston 34 under the influence of pressure medium brings the piston 34 into engagement with the first stop 36, so that the third valve rod 30 is entrained when the piston 34 moves in the direction of the longitudinal axis A.
  • the movement of the piston 34 is stopped by a travel limiter 37 on the housing side. The distance covered is dimensioned such that the displaceable component 22 reaches the cleaning position described above and shown in FIG. 2 .
  • a second stop 38 is provided on the third valve rod 30 and is adapted to be brought into engagement with a third stop 39 which third stop 39 is arranged on the valve rod 9 .
  • the second stop 38 can be formed as an end face of a step inside the third valve rod 30 with which an interior space of the third valve rod 30 is widened.
  • the third stop 39 can be a step that forms a radial expansion of the valve rod 9 .
  • the selection of a distance between the second and third stops 38 and 39 in the direction of the longitudinal axis A determines the difference in distance between the distances traveled by the displaceable component 22 and the closure body 8 in the stroke. This allows the cleaning gaps to be optimally adjusted to the cleaning result.
  • the double seat valve 101 has a housing 102 with a first connection 103 and a second connection 104. These connections 103 and 104 can be connected to the fluid-carrying components of a process plant. A passage 105 is provided in the housing between the connections 103 and 104, with which a fluid connection can be established between the connections.
  • a valve seat 106 is formed on passage 105 and surrounds an opening of passage 105 through which fluid can flow between ports 103 and 104 .
  • a closing element 107 is provided in the housing 102 .
  • This includes a closure body 108 which is in sealing contact with the valve seat 106 in FIG. As a result, a flow of fluid between the connections 103 and 104 is prevented, and the double seat valve is in a closed position.
  • the closing element 107 comprises a valve rod 109 connected to the closing body 108.
  • valve rod 109 is operatively connected to a drive 110 coupled to the housing 102 .
  • This drive 110 is set up to move the closure body 108 along a longitudinal axis A.
  • the sealing contact between valve seat 106 and closure body 108 can be established on the one hand and released on the other.
  • it is designed as a pneumatic drive.
  • a second closing element 111 which has a second closing body 112 is arranged in the housing 102 of the double seat valve 101 . This can be brought into sealing contact with a second valve seat 113 which is formed on passage 5 .
  • Such a sealing contact exists, for example, in the closed position of the double seat valve 101 shown in FIG.
  • the valve rod 109 of the closing element 107 can be designed at least in sections as a hollow rod, in which the second valve rod 114 is accommodated in a displaceable manner.
  • a leakage chamber 115 is formed between the first and second closure bodies 108 and 112 , which is sealed off from the connections 103 and 104 by the closure bodies 108 and 112 .
  • the second closing element 111 there is an outflow channel 116 which empties the leakage space 115 and which connects the leakage space 115 to outflow structures outside of the double seat valve 101 .
  • An advantageously simple structure provides that the drive 110 brings the second closure body 112 into sealing contact with the first closure body 108 in order to open the double seat valve.
  • the first closure body 108 is carried along by the second closure body 112 during its lifting movement into the open position.
  • a seal 117 is provided which seals the closing element 107 against the housing 102 .
  • the closing element 107 can be displaced relative to the seal 117 and there is sealing contact between the seal 117 and the closing element 107 at least in the closed position and in the open position of the double seat valve 101.
  • FIG. 4 shows a section of the double seat valve 101 in a slightly enlarged representation.
  • the second closure body 112 In the switching position of the double seat valve 101, which is shown in Fig. 4, the second closure body 112 is in sealing contact with the second valve seat 113.
  • the closing body 108 of the closing element 107 On the other hand, is lifted off the valve seat 106, forming a gap.
  • a main seal 118 provided on the closure body 108 is separated from the valve seat 106 and is exposed for cleaning.
  • the seal 117 is also exposed so that it can be cleaned.
  • their surfaces which come into contact with the product or seating surfaces in other switching positions can be rinsed off with cleaning liquid in the switching position according to FIG. This is brought about by a displaceable component 122 being displaced towards the closure body 108 counter to the direction of movement thereof, with the seal 117 being lifted off a closed-position seat 123 provided on the displaceable component 122 .
  • a radially outwardly facing cylindrical surface 121 of the slidable member 122 is adapted for sliding contact with the seal 117 and forms a seat for the seal 117 in the open position of the double seat valve 101.
  • a rod portion 119 of the locking member 107 is slidably received in the slidable member 122 .
  • a displacement in the opposite direction of movement along the longitudinal axis A can be carried out.
  • the rod section 119 can be designed to equalize the pressure in relation to the closure body 108 .
  • An inner seat 126 is formed on an inner side of the displaceable component 122, with which an inner seal 125 arranged on the rod section 119 can be brought into sealing contact. This contact consists in particular in a closed position and an open position of the double seat valve 101.
  • annular peripheral recess 140 can be provided on the inside of the displaceable component 122, which creates a gap between the inner seal 125 and the displaceable component 122 in the cleaning position, which gap exposes the inner seal 125 for cleaning.
  • a pot-shaped housing component 128 is provided on the side of the housing 102 facing a drive 110 . This has one of an environment of Double seat valve 101 separate interior 127, in which in the open position of the double seat valve 101, the movable component 122 is added.
  • At least one channel 124 is provided in the rod section 119 and receives the fluid from the passage 129 .
  • the channel 124 also receives cleaning liquid that flows between the inner seal and the sliding component 122 .
  • the fluid is fed through the channel 124 to the outflow channel 116 through which it flows out of the double seat valve 101 .
  • An end of the displaceable component 122 facing the interior can be tapered, for example by a circumferential bend 141.
  • the bend 141 is arranged and dimensioned in such a way that it is not in contact with the seal 117 in the cleaning position and the displaceable component 122 is still in a part of the interior space 127 enclosed by the seal 117 is immersed.
  • the twist 141 merges into the cylindrical surface 121 in such a way that the seal 117 slides onto the cylindrical surface 121 when the displaceable component 122 is displaced into the interior space 127 . This improves the guidance of the movable component 122 and protects the seal 117.
  • the drive 110 has a lift piston 142 which is arranged to slide on the valve rod 109 .
  • the drive 110 and lift piston 142 are designed in such a way that pressurization of the lift piston 142 moves it away from the housing 2 along the longitudinal axis A.
  • the lift piston 142 moves against a stop 143 on the valve rod 109, as a result of which the latter is carried along following the movement.
  • the movement is limited by a stop 143 and the cleaning position of the closure body 108 is thus determined.
  • a third valve rod 130 is designed as a hollow rod, in which the valve rod 109 is movably accommodated.
  • the third valve rod 130 is connected to the movable member 122 .
  • a piston 134 is rigidly coupled to the third valve rod 130 . It is designed to be acted upon by a pressure medium.
  • Pressurizing fluid moves the piston 134 in a direction opposite to the direction of movement of the lift piston 142 .
  • the rigid coupling with the third Valve rod 130 results in movement of movable member 122 in opposition to movement of closure body 108 and rod portion 119 .
  • the rod portion 119 may have a surface 120 configured as shown in the first embodiment to provide a force balance between forces directed up and down in the figure when fluid is in the interior space 127 .
  • FIG. 5 A double seat valve in a further embodiment is shown in FIG. 5 in section and in a detailed view.
  • a surface 220 having the pressure balancing function of surfaces 20 and 120 from the previous examples is disposed on displaceable member 222 . While in the first two examples the one-piece design of rod section 19 or 119 prevents displacement of surface 20 or 120 relative to closure body 8 or 108, the possibility of displacement in the two-part solution of the third example must be taken into account. This is done with the aid of a shoulder 246 on which the third valve rod 230 is supported, in particular when the double seat valve is in the product-carrying operating state. Shoulder 246 is on a rod portion that couples to valve rod 209 .
  • This double seat valve 201 also has a housing 202 with a first connection 203, a second connection 204 and a passage 205 which is arranged in the fluid connection between the connections 203 and 204 in the housing 202 and has a valve seat 206.
  • This passage 205 is provided with a closure body 208 and a second closure body 212 lockable.
  • the closure body 208 is part of a closure element 207 which is connected to a valve rod 209 .
  • the second closure body 212 is part of a second closure element 211 and is connected to a second valve rod 214 . Closure body 208 and the second closure body together delimit a leakage space 215.
  • a seal 217 is arranged on the housing 202 and is in sealing contact with the displaceable component 222 and thus seals a gap between the displaceable component 222 and the housing 202 .
  • a closed-position seat 223 is formed in component 222, with which the seal 217 is in touching contact when the double-seat valve 201 is in the closed position shown in FIG.
  • the displaceable component 222 is shaped in such a way that the seal 217 and the displaceable component 222 are in sealing contact during the transition to the open position and in the open position itself. For the open position, the displaceable component 222 is displaced in the direction of the drive, upwards in the figure and away from the passage 205 .
  • the displaceable component 222 In a cleaning position, the displaceable component 222 is moved in the direction of the closure body 208 and the contact between the displaceable component 222 and the seal 217 is eliminated, forming a gap. Cleaning liquid can then flow through this gap.
  • twist 241 This formation of a gap can be supported by a twist 241, the twist 241 preferably being designed in accordance with the aspects of the twist 141 described in the second exemplary embodiment.
  • the displaceable component 222 can be displaced by an additional drive 233 which can be arranged between the housing 202 and a drive 210 .
  • the third valve rod 230 is led into the additional drive 233 .
  • a pressurizable piston 234 is provided, which entrains the third valve rod 230 during its movement caused by pressurization.
  • An inner seal 225 is arranged on the valve rod 209 . This sealingly touches the displaceable component 222, in particular in the closed and open positions of the double seat valve 201. It is preferably designed as a radial seal which is accommodated in a cylindrical contour on the displaceable component 222.
  • the inner seal 225 can be brought to the same height with a circumferential groove 248 in relation to the longitudinal axis A and thus to contact-free coverage. In this arrangement, the inner seal 225 is exposed and a gap flow of cleaning liquid can be produced between the movable component 222 and the valve rod 209 flows over the inner seal 225 and cleans it.
  • a pot-shaped housing part 228 is located on the side of the housing 202 facing the additional drive 233.
  • the pot-shaped housing part 228 surrounds an interior space 227 in which the displaceable component 222 can be accommodated at least in sections.
  • the displaceable component 222 dips into the interior space 127 when the double seat valve 201 is in the open position.
  • the valve rods 209, 214 and 230 which are plugged into one another, pass through the interior space 127 and the pot-shaped housing part 228 along the longitudinal axis A.
  • the displaceable component 222 has a recess 249 which is conically shaped, for example. Cleaning liquid that flows through the gap between the seal 217 and the displaceable housing part 228 when the double seat valve 201 is in the cleaning position, flows through the interior space 217 and is received by the depression 249 .
  • the inclined position of a wall of the recess relative to the longitudinal axis A is designed in such a way that the cleaning liquid that is taken up is guided to the third valve rod 230 .
  • At least one passage 229 is provided on the third valve rod 230 , through which the cleaning liquid is discharged from the depression into the gap between the valve rod 209 and the third valve rod 230 .
  • At least one channel 224 passes through the valve rod 209, preferably several are provided distributed in the circumferential direction.
  • the cleaning fluid from the gap between the valve rod 209 and the displaceable component 222 and the third rod 230 is passed on through this channel 224 into a gap between the valve rod 209 and the second valve rod 214 . From there it is removed from the double seat valve 201 through a discharge channel 216 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne un robinet-vanne (1 ; 101 ; 201) avec : un boîtier (2 ; 102 ; 202) ; un premier orifice (3 ; 103 ; 203) ; un second orifice (4 ; 104 ; 204) ; un passage (5 ; 105 ; 205) disposé entre les orifices (3, 4 ; 103, 104 ; 203, 204) ; un siège de vanne (6 ; 106 ; 206) formé au niveau du passage (5 ; 105 ; 205) ; un élément de fermeture (7 ; 107 ; 207), qui possède un organe de fermeture (8 ; 108 ; 208), qui peut être mis en contact d'étanchéité avec le siège de vanne (6 ; 106 ; 206), et une tige de vanne (9 ; 109 ; 209) ; et un joint d'étanchéité (17 ; 117 ; 217), qui coopère avec un siège. Afin d'améliorer la facilité de nettoyage du joint d'étanchéité (17 ; 117 ; 217), il est proposé de fournir au siège un siège de position fermé (23 ; 123 ; 223) qui est monté sur un composant (22 ; 122 ; 222) qui peut être déplacé par rapport à la tige de vanne (9 ; 109 ; 209).
EP21802329.9A 2020-11-03 2021-11-01 Robinet-vanne Pending EP4240994A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020006723 2020-11-03
PCT/EP2021/080263 WO2022096414A1 (fr) 2020-11-03 2021-11-01 Robinet-vanne

Publications (1)

Publication Number Publication Date
EP4240994A1 true EP4240994A1 (fr) 2023-09-13

Family

ID=78516841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21802329.9A Pending EP4240994A1 (fr) 2020-11-03 2021-11-01 Robinet-vanne

Country Status (3)

Country Link
US (1) US20240011568A1 (fr)
EP (1) EP4240994A1 (fr)
WO (1) WO2022096414A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118874C2 (de) 1991-06-07 1995-02-16 Tuchenhagen Otto Gmbh Verfahren zur Reinigung eines leckagefrei schaltenden Doppelsitzventils und Ventilvorrichtung zum Durchführen des Verfahrens
DK194391D0 (da) * 1991-11-29 1991-11-29 Haakon Jeppsson Dobbeltsaedeventil
DK0646741T3 (da) 1993-09-21 1996-12-09 Apv Rosista Gmbh Lækagefri omskiftende dobbeltventilindretning
DE202008003976U1 (de) 2008-03-20 2008-11-27 Gea Tuchenhagen Gmbh Sitzreinigungsfähiges Doppelsitzventil mit einer Reinigungseinrichtung für eine Stangendurchführung
FR2956181B1 (fr) * 2010-02-09 2012-02-24 Defontaine Dispositif de vanne multivoies pour la circulation de fluides

Also Published As

Publication number Publication date
US20240011568A1 (en) 2024-01-11
WO2022096414A1 (fr) 2022-05-12

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