DE2948534A1 - BUTTERFLY VALVE WITH LEAKAGE PROTECTION IN PIPELINE SYSTEMS - Google Patents

BUTTERFLY VALVE WITH LEAKAGE PROTECTION IN PIPELINE SYSTEMS

Info

Publication number
DE2948534A1
DE2948534A1 DE19792948534 DE2948534A DE2948534A1 DE 2948534 A1 DE2948534 A1 DE 2948534A1 DE 19792948534 DE19792948534 DE 19792948534 DE 2948534 A DE2948534 A DE 2948534A DE 2948534 A1 DE2948534 A1 DE 2948534A1
Authority
DE
Germany
Prior art keywords
flaps
valves
flap
butterfly valve
pins
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
DE19792948534
Other languages
German (de)
Other versions
DE2948534C2 (en
Inventor
Ing.(grad.) Stefan 8860 Nördlingen Zahrer
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.)
SUEDMO SCHLEICHER AG 73469 RIESBUERG DE
Original Assignee
LEONHARD SCHLEICHOR SUDMO-ARMATURENFABRIK GmbH
Leonhard Schleicher Suedmo Armaturenfabrik 7081 Riesbuerg 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 LEONHARD SCHLEICHOR SUDMO-ARMATURENFABRIK GmbH, Leonhard Schleicher Suedmo Armaturenfabrik 7081 Riesbuerg GmbH filed Critical LEONHARD SCHLEICHOR SUDMO-ARMATURENFABRIK GmbH
Priority to DE19792948534 priority Critical patent/DE2948534A1/en
Priority to DE19803042895 priority patent/DE3042895A1/en
Priority to SE8008376A priority patent/SE442332B/en
Priority to IT26313/80A priority patent/IT1134508B/en
Priority to DK506880A priority patent/DK151498C/en
Priority to GB8038238A priority patent/GB2064730B/en
Priority to NLAANVRAGE8006542,A priority patent/NL181947C/en
Publication of DE2948534A1 publication Critical patent/DE2948534A1/en
Application granted granted Critical
Publication of DE2948534C2 publication Critical patent/DE2948534C2/de
Granted 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/223—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
    • 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
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Multiple-Way Valves (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Description

Anmelder: Leonhard Schleicher, SÜDMO-Armaturenfabrik GmbH, 7081 Riesbürg-PflaumlochApplicant: Leonhard Schleicher, SÜDMO-Armaturenfabrik GmbH, 7081 Riesbürg-Pflaumloch

Absperrklappe mit Leckagesicherung in Rohrleitungssystemen (Zusatz zu Patent , PatentanmeldungButterfly valve with leakage protection in pipeline systems (addendum to patent, patent application

P 28 47 O38.H-23)P 28 47 O38.H-23)

Das Hauptpatent (Patentanmeldung P 2 8 «+7 03 8.4-23)The main patent (patent application P 2 8 «+7 03 8.4-23)

bezieht sich auf eine Absperrklappe mit Leckagesicherung in Rohrleitungssystemen, insbesondere für die Getränke- und Lebensmittelindustrie, deren von außen betätigbare Klappe mit radial einander gegenüberliegenden Bolzen in einem quergeteilten Gehäuse flüssigkeitsdicht gelagert ist und dieser Klappe eine zweite gleichartige, wie die erste mit einer Klappendichtung zusammenwirkende und versetzt angeordnete Klappe zugeordnet ist und diese Klappen im geschlossenen Zustand zusammen mit der Innenmantelfläche eines Gehäusezwischenstückes einen Leckagehohlraum abgrenzen, in den für den Anschluß ins Freie mindestens eine Austrittsbohrung mündet, und daß außerdem am Umfang des Zwischenstückes ein Anschlußrefers to a butterfly valve with leak protection in pipeline systems, especially for the food and beverage industry, whose externally operable flap with radially opposite bolts in a transversely divided Housing is mounted in a liquid-tight manner and this flap has a second similar to the first with one Flap seal cooperating and offset arranged flap is assigned and these flaps in the closed state delimit together with the inner lateral surface of a housing intermediate piece a leakage cavity in which for the At least one outlet bore opens into the open air, and that also a connection on the circumference of the intermediate piece

130029/00(K130029/00 (K

-i-H.-i-H.

für das Einbringen von Spül- und Reinigungsmittel in den Leckagehohlraum vorgesehen ist, wobei diese Anschlüsse bei geschlossenen Klappen zwangsweise geöffnet und bei geöffneten Klappen zwangsweise geschlossen sind.is provided for the introduction of detergent and cleaning agent into the leakage cavity, these connections at closed flaps are forcibly opened and forcibly closed when the flaps are open.

Nach dem Hauptpatent ist bereits erkannt worden, daß durch das Auseinanderziehen der Klappendichtstellen ein Vermischen von einander feindlichen Flüssigkeiten praktisch ausgeschlossen ist. Außerdem sind durch die älteren Maßnahmen die Spülbarke it des Leckagehohlraumes und die Sterilisierung der Klappe verbessert bzw. ermöglicht worden.According to the main patent it has already been recognized that by pulling the valve sealing points apart, mixing liquids that are hostile to each other are practically excluded. In addition, the flushability of the leakage cavity and the sterilization of the Flap has been improved or made possible.

Die Zusatz-Erfindung schafft dadurch eine weitere Verbesserung, daß in der Austrittsbohrung und/oder im Anschluß für ein Spül- und Reinigungsmittel ein von der Bewegung der Klappen zwangsgesteuertes Absperrventil bzw. zwangsgesteuerte Ventile vorgesehen sind. Diese Ventile sind noch sicherer, als die von den Antriebs- bzw. Lagerbolzen durchsetzten Ringdichtungen, da sie gegenüber letzteren praktisch keinen Verschleiß haben. Außerdem ist mit den Ventilen ein erleichterter Ein- und Austritt für Flüssigkeit gegeben.The additional invention thereby creates a further improvement, that in the outlet bore and / or in the connection for a flushing and cleaning means, a shut-off valve or valves that are positively controlled by the movement of the flaps are provided. These valves are even safer than those of the drive or bearing bolts penetrated ring seals, since they have practically no wear compared to the latter. In addition, the valves make it easier for liquids to enter and exit.

Eine für die Praxis günstige Ausführungsform gemäß der Erfindung besteht darin, daß die Ventile als Tellerventile ausgeführt sind, die mit Ventilsitzen im Zwischenstück zusammenwirken und im Sinne des Schließens unter Federwirkung stehen.An embodiment according to the invention which is favorable in practice consists in that the valves are designed as poppet valves which cooperate with valve seats in the intermediate piece and are under spring action in the sense of closing.

130029/0004130029/0004

Diese Tellerventile sind gegenüber den zuvor erwähnten Ringdichtungen nahezu unbegrenzt haltbar, so daß man davon ausgehen kann, daß diese Ventile zwei oder sogar drei Klappendichtungen überleben, was einen erheblichen wirtschaftlichen Vorteil darstellt.These poppet valves are opposite to the previously mentioned ring seals almost indefinitely durable, so that it can be assumed that these valves have two or even three flap seals survive what is a significant economic Represents advantage.

Des weiteren wird es für zweckmäßig angesehen, daß zur Zwangssteuerung der Ventile in Abhängigkeit von der Stellung bzw. der Bewegung der Klappen die Drehbewegung der Lager- und Antriebsbolzen ausgenutzt ist, indem z.B. radiale Stifte der Bolzen mit haubenartigen Enden der Ventilschäfte zusammenwirken, und zwar derart, daß bei geschlossenen Klappen die Stifte die Haubenenden belasten und diese bei offenen Klappen freigeben. Diese Maßnahme zeichnet sich durch besondere Einfachheit aus und neigt zu keinen vorzeitigen Verschleißerscheinungen, so daß die ganze Absperrklappe als langlebig und robust bezeichnet werden kann.Furthermore, it is considered to be expedient that for positive control of the valves, depending on the position or movement of the flaps, the rotary movement of the bearing and drive pins is used, e.g. radial pins of the bolts interact with hood-like ends of the valve stems, in such a way that when the flaps are closed, the pins stress the ends of the hood and these when the flaps are open release. This measure is characterized by its particular simplicity and does not tend to show signs of premature wear, so that the entire butterfly valve can be described as durable and robust.

In der Zeichnung ist die Erfindung anhand einer Schnittdarstellung durch die neue Absperrklappe näher erläutert.In the drawing, the invention is based on a sectional view explained in more detail by the new butterfly valve.

Aus dieser Schnittdarstellung ergibt sich, daß bei geschlossenen Klappen 6, 7 mit ihren Antriebs- und Lagerbolzen 8,9 bzw. 10, 11 eine gfs. in den Leckagehohlraum eingedrungene Leckageflüssigkeit über die Anschlußbohrung 26 drucklos nach untenThis sectional view shows that when the flaps 6, 7 are closed with their drive and bearing pins 8, 9 and 10, 11 a gfs. Leakage liquid that has penetrated into the leakage cavity through the connection bore 26 is depressurized downwards

130029/0004130029/0004

- (ο - (ο

ins Freie ablaufen kann, wodurch vermieden ist, daß bei Beschädigungen an den Klappendichtungen 12 und/oder 13 ein Obertreten von Flüssigkeit vom Anschluß 3 zum Anschluß 4 oder umgekehrt erfolgen kann. Der Leckagehohlraum 22 kann auch bei geschlossenen Klappen 6, 7 über einen oberen Anschluß 35 gespült, gereinigt und/oder sterilisiert werden.can run into the open, which avoids that if the flap seals 12 and / or 13 are damaged Liquid spills over from port 3 to port 4 or vice versa. The leakage cavity 22 can also with closed flaps 6, 7 via an upper connection 35 can be rinsed, cleaned and / or sterilized.

In dem Zwischenstück 5 zwischen den Gehäusehälften 1, 2 sind eine obere Bohrung 44 und eine untere Bohrung 45, jeweils mit Ventilsitz zum Einsetzen von federbelasteten Absperrventilen 46, "+7 vorgesehen. Das öffnen der Ventile 46, 47 gegen die Federkraft erfolgt zwangsweise und synchron mit dem Schließen der Klappen 6, 7. Dafür ist für das obere Absperrventil 46 beispielsweise ein Stift 48 an der Antriebsnabe 20 des Antriebsbolzens 8 vorgesehen, der bei 90°-Drehung der Nabe 20 das Absperrventil 46 in die gezeichnete Offenstellung schaltet. Für das untere Absperrventil 47 übernimmt beispielsweise ein Stift 49 am Lagerbolzen 11 die Schaltung des Absperrventils 47 in die Offenstellung. Das zwangsweise Schließen der Absperrventile 46, 47 beim öffnen der durch eine nicht näher beschriebene Verbindung 21 synchron geschalteten Klapper?6, 7 erfolgt durch eingebaute Druckfedern 50, 51, d.h., diese Federn liefern die bereits erwähnte Federkraft.In the intermediate piece 5 between the housing halves 1, 2 are an upper bore 44 and a lower bore 45, each with Valve seat provided for the insertion of spring-loaded shut-off valves 46, "+7. The opening of the valves 46, 47 against the The spring force is forced and synchronized with the closing of the flaps 6, 7. There is for the upper shut-off valve 46 For example, a pin 48 is provided on the drive hub 20 of the drive pin 8, which, when the hub 20 is rotated 90 °, switches the shut-off valve 46 into the open position shown. For the lower shut-off valve 47, for example, a pin 49 on the bearing pin 11 takes over the switching of the shut-off valve 47 in the open position. The forcible closing of the shut-off valves 46, 47 when the rattle 6, 7, which is synchronously switched by a connection 21 not described in detail, opens takes place through built-in compression springs 50, 51, i.e. these springs provide the spring force already mentioned.

Damit das öffnen der Ventile 46, 47 leicht vollzogen werdenSo that the valves 46, 47 can be opened easily

130029/0004130029/0004

kann, sind die Ventile mit haubenartigen Enden 52, 53 an den Ventilschäften 54, 55 ausgestattet. Außerdem bilden die haubenartigen Enden 52, 53 Führungen in den Bohrungen 44, 45, die gegenüber den Ventilsitzen 56, 57 durchmessermäßig wesentlich größer gehalten sind. Die Zeichnung läßt deutlich erkennen, daß durch diese Maßnahmen keine BetätigungsSchwierigkeiten auftreten können.can, the valves are equipped with hood-like ends 52, 53 on the valve stems 54, 55. In addition, the hood-like form Ends 52, 53 guides in the bores 44, 45, the diameter of which is substantial compared to the valve seats 56, 57 are kept larger. The drawing clearly shows that these measures do not cause any operational difficulties may occur.

130029/0004130029/0004

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JAVtlOff»JAVtlOff »

Claims (3)

PatentansprücheClaims /l.yAbsperrklappe mit Leckagesicherung in Rohrleitungssystemen, insbesondere für die Getränke- und Lebensmittelindustrie, deren von außen betätigbare Klappe mit radial einander gegenüberliegenden Bolzen in einem quergeteilten Gehäuse flüssigkeitsdicht gelagert ist und dieser Klappe eine zweite gleichartige, wie die erste mit einer Klappendichtung zusammenwirkende und versetzt angeordnete Klappe zugeordnet ist und diese Klappen im geschlossenen Zustand zusammen mit der Innenmantelfläche eines Gehäusezwischenstückes einen Leckagehohlraum abgrenzen, in den für den Anschluß ins Freie mindestens eine Austrittsbohrung mündet, und daß außerdem am Umfang des Zwischenstückes ein Anschluß für das Einbringen von Spül- und Reinigungsmittel in den Leckagehohlraum vorgesehen ist, wobei diese Anschlüsse bei geschlossenen Klappen zwangsweise geöffnet und bei geöffneten Klappen zwangsweise geschlossen/l.y Butterfly valve with leak protection in pipeline systems, especially for the beverage and food industry, the externally actuated flap with radially opposite one another Bolt is mounted in a transversely divided housing in a liquid-tight manner and this flap has a second similar, how the first flap which interacts with a flap seal and is arranged offset is assigned and these flaps, in the closed state, together with the inner circumferential surface of a housing intermediate piece, create a leakage cavity delimit, into which at least one outlet hole opens for the connection to the open, and that also on the circumference of the Intermediate piece is provided a connection for the introduction of rinsing and cleaning agents into the leakage cavity, wherein these connections are forcibly opened when the flaps are closed and forcibly closed when the flaps are open sind, nach Patent (Patentanmeldung P 28 47 038.4-23),are, according to patent (patent application P 28 47 038.4-23), dadurch gekennzeichnet, daß in der Austrittsbohrung (45) und/ oder im Anschluß (44) für ein Spül- und Reinigungsmittel ein von der Bewegung der Klappen (6, 7) zwangsgesteuertes Absperrventil (47) bzw. zwangsgesteuerte Ventile (46, 47) vorgesehen sind.characterized in that in the outlet bore (45) and / or in the connection (44) for a rinsing and cleaning agent shut-off valve positively controlled by the movement of the flaps (6, 7) (47) or positively controlled valves (46, 47) are provided. 130029/Ο00Λ130029 / Ο00Λ ORIGINAL INSPECTEDORIGINAL INSPECTED 2. Absperrklappe nach Anspruch I1 dadurch gekennzeichnet, daß die Ventile (46, 47) als Tellerventile ausgeführt sind» die mit Ventilsitzen im Zwischenstück (5) zusammenwirken und im Sinne des Schließens unter Federwirkung (vgl. 50, 51) stehen.2. Butterfly valve according to claim I 1, characterized in that the valves (46, 47) are designed as poppet valves »which interact with valve seats in the intermediate piece (5) and are under spring action in the sense of closing (cf. 50, 51). 3. Absperrklappe nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß zur Zwangssteuerung der Ventile (46, 47) in Abhängigkeit von der Stellung bzw. der Bewegung der Klappen3. Butterfly valve according to claims 1 and 2, characterized in that for the positive control of the valves (46, 47) as a function of the position or the movement of the flaps (6, 7) die Drehbewegung der Lager- und Antriebsbolzen (8 - 11) ausgenutzt ist, indem z.B. radiale Stifte (48, 49) der Bolzen (8 - 11, vgl. auch 20) mit haubenartigen Enden (52, 53) der Ventilschäfte (54, 55) zusammenwirken, und zwar derart, daß bei geschlossenen Klappen (6, 7) die Stifte die Haubenenden (52, 53) belasten und diese bei offenen Klappen (6, 7) freigeben.(6, 7) the rotary movement of the bearing and drive pins (8 - 11) is used, e.g. by using radial pins (48, 49) of the pins (8-11, cf. also 20) interact with hood-like ends (52, 53) of the valve stems (54, 55) in such a way that when the flaps (6, 7) are closed, the pins stress the hood ends (52, 53) and release them when the flaps (6, 7) are open. 130029/0004130029/0004
DE19792948534 1979-12-01 1979-12-01 BUTTERFLY VALVE WITH LEAKAGE PROTECTION IN PIPELINE SYSTEMS Granted DE2948534A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19792948534 DE2948534A1 (en) 1979-12-01 1979-12-01 BUTTERFLY VALVE WITH LEAKAGE PROTECTION IN PIPELINE SYSTEMS
DE19803042895 DE3042895A1 (en) 1979-12-01 1980-11-13 Butterfly-type stop valve - has two butterflies normally synchronised but changeable to allow independent operation
SE8008376A SE442332B (en) 1979-12-01 1980-11-28 CLOCK VALVE WITH LEAK CIRCUIT IN PIPE CONTROL SYSTEM SPECIAL FOR THE DRINKING AND FOOD INDUSTRY
IT26313/80A IT1134508B (en) 1979-12-01 1980-11-28 LOCK BUTTERFLY VALVE WITH LOSS PROTECTION IN TUBULAR CONVEYING SYSTEMS
DK506880A DK151498C (en) 1979-12-01 1980-11-28 CLOCK TYPE WITH LEAK LOCK SAFETY IN PIPE SYSTEMS
GB8038238A GB2064730B (en) 1979-12-01 1980-11-28 Pipe line shut-off valves with a leakage safety device
NLAANVRAGE8006542,A NL181947C (en) 1979-12-01 1980-12-01 VALVE WITH LEAKAGE PROTECTION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792948534 DE2948534A1 (en) 1979-12-01 1979-12-01 BUTTERFLY VALVE WITH LEAKAGE PROTECTION IN PIPELINE SYSTEMS

Publications (2)

Publication Number Publication Date
DE2948534A1 true DE2948534A1 (en) 1981-07-16
DE2948534C2 DE2948534C2 (en) 1988-05-11

Family

ID=6087445

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792948534 Granted DE2948534A1 (en) 1979-12-01 1979-12-01 BUTTERFLY VALVE WITH LEAKAGE PROTECTION IN PIPELINE SYSTEMS

Country Status (6)

Country Link
DE (1) DE2948534A1 (en)
DK (1) DK151498C (en)
GB (1) GB2064730B (en)
IT (1) IT1134508B (en)
NL (1) NL181947C (en)
SE (1) SE442332B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624969C1 (en) * 1996-04-13 1997-09-04 Peter Dipl Ing Mette Double seated trap valve in pipe
DE19638931C1 (en) * 1996-06-22 1998-01-02 Peter Dipl Ing Mette Double-seated leak-sealed flap valve
US8596298B2 (en) 2008-05-30 2013-12-03 Gea Tuchenhagen Gmbh Piping system for process plants in the food and beverage industry
US8714185B2 (en) 2008-07-31 2014-05-06 Gea Tuchenhagen Gmbh Device for the piping of process systems in the food and beverage industry

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FR2634268B1 (en) * 1988-07-15 1990-11-16 Socla VALVE, CONTROL DEVICE FOR FLUID AND FLUID RETURN PROTECTION APPARATUS COMPRISING SAME
US4846225A (en) * 1988-09-19 1989-07-11 Keystone International, Inc. Transmission assembly for use with double block and bleed system
US4846212A (en) * 1988-09-19 1989-07-11 Keystone International, Inc. Bleed valve assembly for double block and bleed system
GB2271164B (en) * 1992-08-22 1994-09-21 Oliver Valves Ltd Valve assembly
US5445248A (en) * 1994-03-07 1995-08-29 Jenara Enterprises Ltd. Exhaust brake
GB9725990D0 (en) 1997-12-09 1998-02-04 Alco Hi Tek Ltd Valve
DE69913261T2 (en) 1998-08-03 2004-10-07 Mitsubishi Heavy Ind Ltd Bypass valve for a gas turbine combustor
FR2841958A1 (en) * 2002-07-04 2004-01-09 Air Liquide Spherical valve isolating tap is housed in tap body having inlet and outlet connections, in open position valve axial bore allows passage of fluid and in closed position communicates with leak recovery
GB2403998A (en) * 2003-07-18 2005-01-19 Spirax Sarco Ltd Double isolating valve
ITBO20040124A1 (en) * 2004-03-01 2004-06-01 Vima Impianti S R L VALVE DEVICE
FR2915262B1 (en) 2007-04-18 2011-03-25 Verdelet A T N VALVE WITH MECHANICAL SEAL AND CORRESPONDING ASSEMBLY.
DE102008022435A1 (en) * 2008-05-07 2009-11-12 Karl Dungs Gmbh & Co. Kg Valve unit with two butterfly valves
DE102008026149A1 (en) 2008-05-30 2009-12-03 Gea Tuchenhagen Gmbh Piping system for use in food- and beverage industries, has cylindrical receiving borehole formed with cylindrical seat surface, where borehole and seat surface are merged with each other in closed position in aligned manner
DE102008044772B3 (en) * 2008-08-28 2009-11-05 Gea Tuchenhagen Gmbh Rotary-check valve for protecting leakage of fluid in e.g. foodstuff industry, has rotary-shut-off valves controlling inlet opening using closing element e.g. seat disk, and outlet opening using another closing element
IT201800006040A1 (en) * 2018-06-05 2019-12-05 Valve device for the transfer of powdered products
CN111779882B (en) * 2019-01-28 2021-11-23 青岛开元阀门有限公司 Safety valve with protection architecture

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DE2430030A1 (en) * 1974-06-22 1976-01-08 Otto Tuchenhagen Double-seat valve with leak monitoring chamber - has passages for chamber cleaning material supply and discharge
US4108199A (en) * 1975-03-11 1978-08-22 Applications Mechaniques Et Robinetterie Industrielle Isolating valves

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US1332000A (en) * 1918-03-24 1920-02-24 Allis Chalmers Mfg Co Valve device
GB1532002A (en) * 1975-06-10 1978-11-15 Mather & Platt Ltd Fire extinguishing installation control valves
DE2847038C3 (en) * 1978-10-28 1984-06-28 Leonhard Schleicher Südmo-Armaturenfabrik GmbH, 7081 Riesbürg Flap-like shut-off element with leak protection in pipeline systems
DE2901207C2 (en) * 1979-01-13 1984-02-02 Kieselmann Gmbh, 7134 Knittlingen Shut-off device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2229978A1 (en) * 1972-06-20 1974-01-10 Ahlborn E Ag ROTARY FLAP VALVE
DE2430030A1 (en) * 1974-06-22 1976-01-08 Otto Tuchenhagen Double-seat valve with leak monitoring chamber - has passages for chamber cleaning material supply and discharge
US4108199A (en) * 1975-03-11 1978-08-22 Applications Mechaniques Et Robinetterie Industrielle Isolating valves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19624969C1 (en) * 1996-04-13 1997-09-04 Peter Dipl Ing Mette Double seated trap valve in pipe
DE19638931C1 (en) * 1996-06-22 1998-01-02 Peter Dipl Ing Mette Double-seated leak-sealed flap valve
US8596298B2 (en) 2008-05-30 2013-12-03 Gea Tuchenhagen Gmbh Piping system for process plants in the food and beverage industry
US8714185B2 (en) 2008-07-31 2014-05-06 Gea Tuchenhagen Gmbh Device for the piping of process systems in the food and beverage industry

Also Published As

Publication number Publication date
DK151498C (en) 1988-05-30
DK151498B (en) 1987-12-07
GB2064730B (en) 1984-07-11
DE2948534C2 (en) 1988-05-11
NL181947B (en) 1987-07-01
DK506880A (en) 1981-06-02
SE8008376L (en) 1981-06-02
GB2064730A (en) 1981-06-17
IT8026313A0 (en) 1980-11-28
IT1134508B (en) 1986-08-13
NL8006542A (en) 1981-07-01
SE442332B (en) 1985-12-16
NL181947C (en) 1987-12-01

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