DE2948534C2 - - Google Patents
Info
- Publication number
- DE2948534C2 DE2948534C2 DE2948534A DE2948534A DE2948534C2 DE 2948534 C2 DE2948534 C2 DE 2948534C2 DE 2948534 A DE2948534 A DE 2948534A DE 2948534 A DE2948534 A DE 2948534A DE 2948534 C2 DE2948534 C2 DE 2948534C2
- Authority
- DE
- Germany
- Prior art keywords
- flaps
- leakage
- closed
- shut
- inlet
- 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.)
- Expired
Links
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 235000013361 beverage Nutrition 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 2
- 239000003599 detergent Substances 0.000 claims description 2
- 239000013641 positive control Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
Das Hauptpatent 28 47 038 bezieht sich auf ein klappenartiges Absperrelement mit Leckagesicherung in Rohrleitungssystemen, insbesondere für die Getränke- und Lebensmittelindustrie, das von außen betätigbar mit radial einander gegenüberliegenden Bolzen in einem quergeteilten Gehäuse mittels Klappendichtung flüssigkeitsdicht gelagert ist und bei Absperrstellung mit zwei parallel zueinander verlaufenden Dichtkanten einen Leckagehohlraum begrenzt, wobei das Absperrelement aus zwei gleichartigen, versetzt aufeinander folgend und jeweils für sich einzeln im Gehäuse gelagerten Klappen besteht, von denen jede eine der Dichtkanten aufweist, die mit jeweils einer Klappendichtung zusammenwirkt und diese Klappen im geschlossenen Zustand zusammen mit der Innenmantelfläche eines zusätzlichen Gehäusezwischenstückes ein großes Volumen für den Leckagehohl raum abgrenzen, wobei der Leckagehohlraum nicht nur einen Aus laß für die Leckflüssigkeit, sondern auch einen Einlaß für ein Spül- und Reinigungsmittel aufweist und Auslaß sowie Einlaß bei geschlossenen Klappen zwangsweise geöffnet und bei ge öffneten Klappen zwangsweise geschlossen sind. The main patent 28 47 038 relates to a flap-like Shut-off element with leakage protection in piping systems, especially for the beverage and food industry, the can be operated from the outside with radially opposite one another Bolt in a cross-sectioned housing using a flap seal is stored liquid-tight and with the shut-off position two parallel sealing edges one Leakage cavity limited, the shut-off element from two like, staggered in succession and each for there are flaps stored individually in the housing, of which each has one of the sealing edges, each with one Flap seal interacts and these flaps in the closed Condition along with the inner surface of an additional one Intermediate housing a large volume for the leakage hollow delimit space, with the leakage cavity not just an off leave for the leakage fluid, but also an inlet for one Has detergent and cleaning agent and outlet and inlet forcibly opened with closed flaps and with ge opened flaps are forcibly closed.
Nach dem Hauptpatent ist bereits erkannt worden, daß die Klappendichtstellen weit auseinandergezogen werden müssen, wenn ein Durchsickern von Flüssigkeit von der einen oder anderen Seite zu keiner unmittelbaren Vermischungsgefahr führen soll. Die beiden Klappen lassen sich auch im Bereich ihrer Bolzen leichter abdichten als eine einzige Klappe, da leichter zu beherrschende geometrische Formen vorliegen, bzw. die Dichtstellen im wesentlichen nur von einer Seite her belastet werden. Die angestrebte Sicherheit gegen Ver mischung ist daher auf wirtschaftliche Weise erreicht.After the main patent it was already recognized that the Valve sealing points have to be pulled apart widely, if leakage of liquid from one or the other other side to no immediate risk of mixing should lead. The two flaps can also be used in the area seal their bolts more easily than a single flap, because geometric shapes are easier to master, or the sealing points essentially only from one side be burdened here. The desired security against Ver Mixing is therefore achieved in an economical way.
Verbesserungsbedürftig hingegen ist es, und darin ist auch die Aufgabe der Zusatzerfindung zu sehen, den Abfluß aus dem voluminösen Leckagehohlraum noch weiter zu verbessern, da dem Ablauf der Leckageflüssigkeit durch die Bolzen der Klappen doch Grenzen gesetzt sind und auch die Abdichtung der Abflußquerschnitte verhältnismäßig komplizierte Dich tungen erfordert. Darüber hinaus wird eine einfache und wirkungsvolle Spülmöglichkeit des Leckagehohlraumes ge fordert.On the other hand, it needs to be improved, and it is in it to see the task of the additional invention, the outflow to further improve the voluminous leakage cavity, since the drainage of the leakage fluid through the bolts of the Flaps are limited and so is the seal the drain cross sections are relatively complicated required. It also becomes simple and effective rinsing of the leakage cavity ge demands.
Gelöst wird diese Aufgabe durch die Zusatzerfindung dadurch, daß Auslaß und Einlaß von mittig zwischen den Klappen vor gesehenen und radial einander gegenüberliegenden Bohrungen in dem Zwischenstück gebildet sind, welche von der Drehbe wegung der Klappen zwangsgesteuerte, an sich bekannte Teller ventile aufnehmen, die mit Ventilsitzen im Zwischenstück zusammenwirken und im Sinne des Schließens unter Federwirkung stehen, wobei zur Zwangssteuerung der Ventile in Abhängigkeit von der Stellung bzw. der Bewegung der Klappen die Drehbe wegung der Lager- und Antriebsbolzen ausgenutzt ist, indem bevorzugt 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. Durch die An ordnung von Auslaß und Einlaß in dem Zwischenstück sind der Auslegung der erforderlichen Bohrungen keine Grenzen gesetzt, so daß ein nahezu unbegrenzter Ein- und Austritt von Leckageflüssigkeit gegeben ist. Durch die besondere Anordnung der Bohrungen sind optimale Spülmöglichkeiten gegeben, also die neue Bauart den verschärften Sicherheits bestimmungen der Getränke- und Lebensmittelindustrie voll und ganz entspricht. Das Abrücken der Aus- und Einlaß bohrungen von den Bolzenlagerungen führt auch zur Entlastung der Dichtungen im Bolzenbereich, was sich auf die Funktions sicherheit der Dichtungen günstig auswirkt. Auch ist hervor zuheben, daß die zur Anwendung kommenden, an sich bekannten Tellerventile unbegrenzt haltbar sind, so daß man davon aus gehen kann, daß diese Ventile zwei oder sogar drei Klappen dichtungen überleben, was einen erheblichen wirtschaftlichen Vorteil darstellt. Die Steuerung der Tellerventile von der Steuerung der Klappen abhängig zu machen schließlich führt zu einem exakten Funktionsablauf, ganz abgesehen davon, daß weder die Ventile noch der Antrieb zu keinen vorzeitigen Verschleißerscheinungen neigen, also das ganze klappenartige Absperrelement als langlebig und robust bezeichnet werden kann.This task is solved by the additional invention by that outlet and inlet from the middle between the flaps in front seen and radially opposite holes are formed in the intermediate piece, which by the Drehbe movement of the flaps positively controlled plates known per se take up valves with valve seats in the adapter interact and in the sense of closing under spring action stand, depending on the positive control of the valves from the position or movement of the flaps the rotary movement of the bearing and drive bolts is used by prefers radial pins of the bolts with hood-like ends the valve stems cooperate in such a way that at closed flaps the pins strain the hood ends and release them with the flaps open. By the An order of outlet and inlet are in the intermediate piece there are no limits to the design of the required holes set so that an almost unlimited entry and exit of leakage fluid. Because of the special The arrangement of the bores are ideal for flushing given, so the new design the tightened security provisions of the beverage and food industry fully and completely corresponds. Moving the outlet and inlet Drilling from the pin bearings also leads to relief the seals in the bolt area, which affects the functional safety of the seals has a positive effect. Is also apparent to emphasize that the known per se used Poppet valves are indefinitely durable, so you can count on that can go that these valves have two or even three flaps seals survive, which is a significant economic Represents advantage. The control of the poppet valves from the Control of the flaps ultimately make it dependent to an exact functional sequence, quite apart from the fact that neither the valves nor the actuator at any premature Signs of wear tend, so the whole flap-like Shut-off element can be described as durable and robust.
Die US-PS 41 08 199 entspricht ihrem Inhalt nach der Amri- Broschüre 77/03, die bereits bei der Behandlung des Haupt patents Berücksichtigung gefunden hat. Die dort beschriebene Bauart offenbart keine versetzt aufeinanderfolgenden Klappen, vielmehr stellt sie eine einzige ausgehöhlte Klappe dar, die über eine einzige Achse im Gehäuse gelagert ist. Außerdem fehlen der bekannten Ausführung Ein- und Auslaßventile.The US-PS 41 08 199 corresponds to its content according to the Amri- Brochure 77/03 already in the treatment of the main has taken patents into account. The one described there Design does not reveal any staggered flaps, rather, it represents a single hollowed-out hatch, the is mounted on a single axis in the housing. Furthermore the known design lacks inlet and outlet valves.
Die DE-OS 24 30 030 hat ein Doppelsitzventil mit Leckkontroll raum zum Gegenstand, das ein reines Tellerventil darstellt und damit mit dem erfindungsgemäßen klappenartigen Absperr element nichts zu tun hat. Außerdem unterliegen die Ventile für die Beherrschung der Leckageflüssigkeit keine Zwangssteuerung, d. h., sie müssen über eigene pneumatische Antriebe gesteuert werden, wodurch sich wesentliche wirtschaftliche Nachteile ergeben.DE-OS 24 30 030 has a double seat valve with leak control space to the object, which represents a pure poppet valve and thus with the flap-like shutoff according to the invention element has nothing to do. In addition, the Valves for the control of the leakage liquid no override, d. that is, they must have their own Pneumatic drives are controlled, which means result in significant economic disadvantages.
In der Zeichnung ist die Erfindung anhand einer Schnitt darstellung durch das klappenartige Absperrelement näher erläutert.In the drawing, the invention is based on a section representation through the flap-like shut-off element closer explained.
Aus dieser Schnittdarstellung ergibt sich, daß bei ge schlossener Klappe 6, 7 mit ihren Antriebs- und Lager bolzen 8, 9 bzw. 10, 11 eine gfs. in den Leckagehohlraum eingedrungene Leckageflüssigkeit über die Anschlußbohrung 26 drucklos nach unten ins Freie ablaufen kann, wodurch vermieden ist, daß bei Beschädigungen an den Klappen dichtungen 12 und/oder 13 ein Übertreten 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.From this sectional view it follows that with ge closed flap 6 , 7 with their drive and bearing bolts 8 , 9 and 10 , 11 a gfs. leakage liquid which has penetrated into the leakage cavity can drain downward into the open via the connection bore 26 , thereby avoiding that, in the event of damage to the flap seals 12 and / or 13, liquid can pass from the connection 3 to the connection 4 or vice versa. The leakage cavity 22 can also be flushed, cleaned and / or sterilized via an upper connection 35 when the flaps 6 , 7 are closed.
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, 47 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 Absperr ventile 46, 47 beim Öffnen der durch eine nicht näher beschriebene Verbindung 21 synchron geschalteten Klappen 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 there are an upper bore 44 and a lower bore 45 , each with a valve seat for inserting spring-loaded shut-off valves 46 , 47 . The opening of the valves 46 , 47 against the spring force is forced and synchronous with the closing of the flaps 6 , 7 . For example, a pin 48 is provided on the drive hub 20 of the drive pin 8 for the upper check valve 46 which switches at 90 ° rotation of the hub 20, the check valve 46 into the illustrated open position. 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 into the open position. The forced closing of the shut-off valves 46 , 47 when opening the flaps 6 , 7 switched synchronously by a connection 21 , not described, is carried out by built-in compression springs 50 , 51, ie, these springs deliver the spring force already mentioned.
Damit das Öffnen der Ventile 46, 47 leicht vollzogen werden kann, sind die Ventile mit haubenartigen Enden 52, 53 an den Ventilschäften 54, 55 ausgestattet. Außer dem 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 Maß nahmen keine Betätigungsschwierigkeiten auftreten können.So that the opening of the valves 46 , 47 can be carried out easily, the valves are equipped with hood-like ends 52 , 53 on the valve stems 54 , 55 . In addition, the hood-like ends 52 , 53 form guides in the bores 44 , 45 , which are kept considerably larger in diameter than the valve seats 56 , 57 . The drawing clearly shows that this measure did not cause any operational difficulties.
Claims (1)
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 |
DK506880A DK151498C (en) | 1979-12-01 | 1980-11-28 | CLOCK TYPE WITH LEAK LOCK SAFETY IN PIPE SYSTEMS |
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 |
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 DE2948534A1 (en) | 1981-07-16 |
DE2948534C2 true 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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
DE102008051819A1 (en) | 2008-07-31 | 2010-02-25 | Gea Tuchenhagen Gmbh | Apparatus for piping process plants in the food and beverage industry and method for operating a device |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
GB9725990D0 (en) | 1997-12-09 | 1998-02-04 | Alco Hi Tek Ltd | Valve |
EP0978689B1 (en) * | 1998-08-03 | 2003-12-03 | Mitsubishi Heavy Industries, Ltd. | Gas turbine combustor by-pass valve device |
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 |
US8596298B2 (en) | 2008-05-30 | 2013-12-03 | Gea Tuchenhagen Gmbh | Piping system for process plants in the food and beverage industry |
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 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE529170C (en) * | 1931-07-09 | Zimmermann & Jansen Gmbh | Venting device for gate valve | |
US1332000A (en) * | 1918-03-24 | 1920-02-24 | Allis Chalmers Mfg Co | Valve device |
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 |
FR2304010A1 (en) * | 1975-03-11 | 1976-10-08 | Amri | DOUBLE SAFETY ISOLATION VALVE |
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 |
-
1979
- 1979-12-01 DE DE19792948534 patent/DE2948534A1/en active Granted
-
1980
- 1980-11-28 IT IT26313/80A patent/IT1134508B/en active
- 1980-11-28 DK DK506880A patent/DK151498C/en active
- 1980-11-28 SE SE8008376A patent/SE442332B/en not_active IP Right Cessation
- 1980-11-28 GB GB8038238A patent/GB2064730B/en not_active Expired
- 1980-12-01 NL NLAANVRAGE8006542,A patent/NL181947C/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE102008051819A1 (en) | 2008-07-31 | 2010-02-25 | Gea Tuchenhagen Gmbh | Apparatus for piping process plants in the food and beverage industry and method for operating a device |
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 |
Also Published As
Publication number | Publication date |
---|---|
IT8026313A0 (en) | 1980-11-28 |
NL181947C (en) | 1987-12-01 |
SE8008376L (en) | 1981-06-02 |
DK506880A (en) | 1981-06-02 |
DK151498B (en) | 1987-12-07 |
NL8006542A (en) | 1981-07-01 |
NL181947B (en) | 1987-07-01 |
IT1134508B (en) | 1986-08-13 |
DE2948534A1 (en) | 1981-07-16 |
SE442332B (en) | 1985-12-16 |
DK151498C (en) | 1988-05-30 |
GB2064730A (en) | 1981-06-17 |
GB2064730B (en) | 1984-07-11 |
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