SE442332B - CLOCK VALVE WITH LEAK CIRCUIT IN PIPE CONTROL SYSTEM SPECIAL FOR THE DRINKING AND FOOD INDUSTRY - Google Patents
CLOCK VALVE WITH LEAK CIRCUIT IN PIPE CONTROL SYSTEM SPECIAL FOR THE DRINKING AND FOOD INDUSTRYInfo
- Publication number
- SE442332B SE442332B SE8008376A SE8008376A SE442332B SE 442332 B SE442332 B SE 442332B SE 8008376 A SE8008376 A SE 8008376A SE 8008376 A SE8008376 A SE 8008376A SE 442332 B SE442332 B SE 442332B
- Authority
- SE
- Sweden
- Prior art keywords
- flaps
- flap
- pins
- open
- valve according
- Prior art date
Links
- 230000035622 drinking Effects 0.000 title 1
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 235000013361 beverage Nutrition 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001954 sterilising 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
8008376°9 10 15 20 25 30 35 2 För friktionsfritt utträde av läckvätska är det vida- re lämpligt att de bägge företrädesvis drivmässígt med var- andra kopplade klaffarna respektive dessas lagertappar är för- sedda med vinkelhâl, som vid stängda klaffar utmynnar i ett gemensamt hål e.likn. i mellanstycl t, varvid hålet fortsät- ter i ett avlopp, som kan vara utformat som en slanganslut- ning. 8008376 ° 9 10 15 20 25 30 35 2 For friction-free leakage of leakage fluid, it is It is appropriate that the two are preferably driven with each other. other coupled flaps and their bearing pins, respectively, are seen with angular holes, which when closed flaps culminate in one common hole e.likn. in intermediate piece t, the hole continuing in a drain, which may be designed as a hose connection ning.
För att även optimalt utforma slutandet och öppnandet av vinkelhålen föreslås vidare att förutom de mellan mellan- stycket och husdelarna vätsketätt inspända och av drivtappar och lagertappar genomträngda klafftätningarna anordnas tvärs mot lagertapparna liggande och av dessa vätsketätt genomträng- da och vridsäkrade tätningar, som slidartat samverkar med vinkelhâlens radiella utträdesöppningar, i det att de allt- efter utträdesöppningarnas vridställning antingen med sina innermantelytor tillsluter utträdesöppningarna eller ansluter dessa via radiella hål till ett gemensamt hål i mellanstycket.To also optimally design the closure and opening of the angle holes it is further proposed that in addition to the the piece and the housing parts liquid-tight clamped and of drive pins and bearing pins penetrated the flap seals are arranged transversely lying against the bearing pins and permeated by them liquid-tight da and non-slip seals, which vaginally cooperate with the radial exit openings of the angle holders, in that they after the rotation of the exit openings either with their inner mantle surfaces close the exit openings or connect these via radial holes to a common hole in the intermediate piece.
För spolbarheten är det lämpligt att det på mellan- styckets omkrets är anordnad en anslutning för införande av spol- och rengöringsmedel i läckrummet. Om man utför spol- ningen ovanifrân eller underifrån eller från en annan radial- riktning är en praktisk fråga.For flushability, it is appropriate that in the the circumference of the piece is provided with a connection for insertion of rinsing and cleaning agents in the leak room. If you perform flushing from above or below or from another radial direction is a practical issue.
Då anordnandet av en anslutning på mellanstycket så- tillvida innebär en risk som att man inte kan utesluta att stängandet av anslutningen kan glömmas, erbjuder uppfinning- en även här en förbättring, som består däri att vid drivtap- parna anordnas samma slags tätningsanordning med vinkelhâl som vid läckutträdesöppningarna, vilken tjänar till att öppna eller stänga en anslutning automatiskt i beroende av klaffar~ nas ställning.When the arrangement of a connection on the intermediate piece is in so far as it entails a risk which cannot be ruled out the closure of the connection can be forgotten, the invention here too there is an improvement, which consists in the pairs are arranged the same kind of sealing device with angular holes as at the leak exit ports, which serve to open or close a connection automatically depending on the flaps ~ position.
Genom uppfinningen erbjudes en ytterligare förbättring därigenom att i avloppshålet och/eller i anslutningen för ett spol- och rengöringsmedel anordnas en av klaffarnas rörelse tvângsstyrd spärrventil respektive tvângsstyrda ventiler.The invention offers a further improvement in that in the drain hole and / or in the connection for one rinsing and cleaning agents are arranged one of the movement of the flaps forced shut-off valve and forced-controlled valves, respectively.
Dessa ventiler är ännu säkrare än de av driv- resp. lager- tapparna genomträngda ringtätningarna, då de i jämförelse med de senare har praktiskt taget ingen förslitning. Dessutom er- bjudes med ventilerna ett lättare in- och utträde för vätska. 10 15 20 25 30 35 8008376-9 3 En i praktiken lämplig och framför allt lánglivad utföringsform av uppfinningen består däri att spärrventiler- na består av tallriksventiler, vars ventiltallrikar samver- kar med ventilsäten i mellanstycket och för stängningen står under fjäderpâverkan, cch att vida e för tvångsstyrning av spärrventilerna i beroende av klaffarnas ställning resp. rörelse lager~ och drivtapparnas vridrörelse utnyttjas, idet att t.ex. radiella stift på tapparna samverkar med huvliknan- de ändar av ventilspindlarna och på sådant sätt att stiften vid stängda klaffar belastar huvändarna och friger dem vid öppna klaffar.These valves are even safer than those of drive resp. stock the pins penetrated the ring seals, then they in comparison with the latter have virtually no wear. In addition, offered with the valves an easier entry and exit for liquid. 10 15 20 25 30 35 8008376-9 3 A practical and above all long-lasting one embodiment of the invention consists in that the shut-off valve consists of disc valves, the valve discs of which vessels with valve seats in the intermediate piece and for the closing stands under spring action, cch to wide e for forced control of the shut-off valves depending on the position of the flaps resp. movement bearing ~ and the rotational movement of the drive pins are utilized, as that e.g. radial pins on the pins cooperate with the hood-like the ends of the valve spindles and in such a way that the pins when the flaps are closed, the hoods are loaded and released open flaps.
Vid särskilda tillämpningar krävs från användarens sida att vid rengöring även tätningssätet mellan klaff och klafftätning blir rengjort. För dessa tillämpningar uppvisar varje klaff en egen drivning och att dessa båda normalt i samma riktning och synkront arbetande, t.ex. för hand eller pneumatiskt påverkade, drivningar är omkopplingsbara till från varandra oberoende arbetssätt.For special applications required from the user side that when cleaning also the sealing seat between flap and flap seal is cleaned. For these applications exhibit each flap its own drive and that these two normally in same direction and synchronous working, e.g. by hand or pneumatically actuated, drives are switchable to independent working methods.
På ritningarna, fig. 1 - 4, visas som exempel fyra utföringsformer av uppfinningen i snitt.The drawings, Figs. 1 - 4, are shown as example four embodiments of the invention in section.
I fig. 1 och 2 består klaffventilen av två husdelar 1, 2 med ledningsanslutningar 3, 4. Mellan delarna 1, 2 är anordnat ett mellanstycke 5. Mellan delen 1, mellanstycket 5 och delen 2 är två likartade klaffar 6, 7 vridbart lagrade med varsin drivtapp 8, 9 och varsin lagertapp 10, 11. Vid om- kretsen av klaffarna 6, 7 är anordnad vardera en mellan hus~ delarna 1, 2 och mellanstycket 5 vätsketätt inspänd ringfor- mig klafftätning 12, 13 med vardera två hål 1H, 15 och 16,17.In Figs. 1 and 2, the flap valve consists of two housing parts 1, 2 with cable connections 3, 4. Between parts 1, 2 are arranged a spacer 5. Between the part 1, the spacer 5 and the part 2, two similar flaps 6, 7 are rotatably mounted with each drive pin 8, 9 and each bearing pin 10, 11. In the case of the circuit of the flaps 6, 7 is arranged each one between housings ~ parts 1, 2 and the intermediate piece 5 liquid-tight clamped ring me flap seal 12, 13 with two holes 1H, 15 and 16,17 each.
Klaffarna 6, 7 är visade i stängt tillstånd. Då de öppnas,vrides bägge klaffarna 6, 7 samtidigt ca 900 till det punktstreckade läget. Denna 900-omställning sker exempelvis med en handspak 18 eller med en pneumatisk eller elektrisk ställmotor, varvid de båda drivnaven 19, 20 genom en icke närmare beskriven förbindning 21 utför en synkron 90°-vrid- rörelse, så att endast en, exempelvis till drivnavet 20 an- sluten ställmotor räcker för omställning av bägge klaffarna 6, 7. Inkommer på grund av en defekt på klafftätningen 12, 13 (vid stängda klaffar 6, 7) vätska i läckrummet 20, soon QUALITY, _sooss7@=9 10 15 20 25 30 35 4 bortföres denna läckvätska via vinkelhål 23, 24 till ett ge- mensamt hâl 25 och via ett ytterligare hål 28 och en slang- anslutning 27 ut i det fria.The flaps 6, 7 are shown in the closed condition. When they opens, turn both flaps 6, 7 at the same time about 900 to it dotted line mode. This 900 conversion takes place, for example with a hand lever 18 or with a pneumatic or electric actuator motor, the two drive hubs 19, 20 through a non the connection 21 described in more detail performs a synchronous 90 ° movement, so that only one, for example to the drive hub 20 closed actuator is sufficient for adjusting both flaps 6, 7. Incoming due to a defect in the flap seal 12, 13 (with closed flaps 6, 7) liquid in the leakage space 20, soon QUALITY, _sooss7 @ = 9 10 15 20 25 30 35 4 this leakage liquid is removed via angle holes 23, 24 to a hole 25 and via a further hole 28 and a hose connection 27 out into the open.
Lagertapparna 10, 11 ingriper vid de radiella utlop- pen 28, 29 från vinkelhålen 23, 2% rätsketätt i ringformiga tätningar 30, 31. Medvridningen av tätningarna 30, 31 vid klaffarnas 6, 7 omställning förhindras genom tvâ rörformiga ansatser 32, 33, som ingriper i tätningarna 30, 31. Vid öpp- nandet av klaffarna vrides de radiella utloppen 28, 29cirka 900 och slutes vätsketätt av de ringformiga tätningarna3Ü,31.The bearing pins 10, 11 engage at the radial outlets. pen 28, 29 from the angle holes 23, 2% rectangular in annular seals 30, 31. The rotation of the seals 30, 31 at the adjustment of the flaps 6, 7 is prevented by two tubular lugs 32, 33, which engage in the seals 30, 31. When opening When the flaps are turned, the radial outlets 28, 29 are rotated approximately 900 and is closed liquid-tight by the annular seals3Ü, 31.
Vid stängt läge för klaffarna 6, 7 kan för spolning av läckrummet 22 en rengöringslösning införas genom hålet BH i mellanstycket 5.In closed position for flaps 6, 7 can for flushing of the leakage space 22 a cleaning solution is introduced through the hole bra in the intermediate piece 5.
Pig. 2 visar en möjlighet att leda in spolvätska resp. ånga för rengöring och sterilisering av läckrummet 22 vid de bägge drivtapparna 8, 9 på liknande sätt som den bortföres via lagertapparna 10, 11. Tillförseln av spolvätska sker via ett hål 35, som sidledes leder ut i det fria och likaledes är försedd med en på ritningen icke visad slanganslutning. Driv- tapparna 8, 9 är vid radiella inlopp Bñ, 37 till vinkelhäl 38, 39 vätsketätt lagrade i ringformiga tätningar 40, 41.Pig. 2 shows an opportunity to introduce flushing fluid resp. steam for cleaning and sterilizing the leakage chamber 22 at the both drive pins 8, 9 in a similar manner as it is removed via the bearing pins 10, 11. The supply of flushing liquid takes place via a hole 35, which laterally leads out into the open and likewise is fitted with a hose connection not shown in the drawing. Driving- the pins 8, 9 are at radial inlets Bñ, 37 to angular heel 38, 39 liquid-tight stored in annular seals 40, 41.
Medvridning av tätningarna 40, #1 vid klaffarnas 6, 7 omställ- ning förhindras även här genom två rörformiga ansatser 42, 43, som ingriper i tätningarna 40, 41. Vid öppnandet av klaf- farna 6, 7 vrides de radiella inloppen 36, 37 cirka 900 och slutes vätsketätt av de ringformiga tätningarna H0, 41.Tightening of the seals 40, # 1 at the flaps 6, 7 adjustment is also prevented here by two tubular approaches 42, 43, which engages in the seals 40, 41. When opening the valve farna 6, 7 the radial inlets 36, 37 are turned about 900 and closed liquid-tight by the annular seals H0, 41.
Av fig. 3 framgår att vid stängda klaffar 6, 7 med sina driv- och lagertappar 8, 9 resp. 10, 11 en händelsevis i läckrummet inträngd läckvätska kan avrinna trycklöst nedåt via anslutningshålet 26 ut i det fria. Läckrummet 22 kan även vid stängda klaffar 6, 7 spolas, seras via en övre anslutning 35. 1 mellanstycket 5 mellan nade ett övre hål H4 och ett nedre hål H5, vart och ett med rengöras och/eller sterili- hushälfterna 1, 2 är anord- ett ventilsäte 56 resp. 57 för samverkan med varsin fjäder- belastade spärrventilkropp 46 resp. H7. öppnandet av spärr- ventilerna H6, H7 mot fjäderkraften sker tvångsvis synkront med stängandet av klaffarna 6, 7. Därför är för den övre 10 15 20 30 8008376-9 5 spärrventilen H6 exempelvis ett stift #8 anordnat på driv- tappens 8 drivnav 20, som vid 900-vridning av navet 20 stäl- ler om spärrventilen 46 till det visade öppetläget. För den undre spärrventilen H7 övertar exempelvis ett stift H9 på lagertappen 11 spärrventilens 47 ctställning till öppet läge.From Fig. 3 it can be seen that with closed flaps 6, 7 with their drive and bearing pins 8, 9 resp. 10, 11 and incidentally leakage liquid penetrated into the leakage room can drain down without pressure via the connection hole 26 into the open air. The leak room 22 can also with closed flaps 6, 7 flush, via an upper connection 35. 1 intermediate piece 5 between an upper hole H4 and a lower hole H5, each with cleaned and / or sterilized the housing halves 1, 2 are arranged a valve seat 56 resp. 57 for co-operation with each spring loaded shut-off valve body 46 resp. H7. the opening of the the valves H6, H7 against the spring force are forcibly synchronous with the closing of the flaps 6, 7. Therefore, for the upper 10 15 20 30 8008376-9 5 the shut-off valve H6, for example a pin # 8 arranged on the drive the drive hub 20 of the pin 8, which upon 900 rotation of the hub 20 about the shut-off valve 46 to the shown open position. For it the lower shut-off valve H7, for example, takes over a pin H9 the bearing pin 11 sets the shut-off valve 47 to the open position.
Det tvångsvisa stängandet av spärrventilerna vid öppnandet av de genom en icke närmare beskriven förbindning 21 synkront omställda klaffarna 6, 7 sker genom inbyggda tryckfjädrar 50, 51; dvs dessa fjädrar levererar den redan nämnda fjäderkraften.The forced closing of the shut-off valves when opening of those by a connection 21 not described in detail 21 synchronously Adjusted flaps 6, 7 are provided by built-in compression springs 50, 51; i.e. these springs supply the already mentioned spring force.
För att öppnandet av ventilerna H6, 47 skall ske lätt, är ventilerna utrustade med huvliknande ändar 52, 53 på ven- tilspindlarna 5D, 55. Dessutom bildar ändarna 52, 53 styr- ningar i hålen H9, 45, som är väsentligt större till dia- metern än ventilsätena 56, 57.In order for the opening of the valves H6, 47 to take place easily, the valves are equipped with hood-like ends 52, 53 on the valve the spindles 5D, 55. In addition, the ends 52, 53 form guide holes in holes H9, 45, which are significantly larger in diameter. meters than the valve seats 56, 57.
Klaffventilen enligt fig. H motsvarar utföringsformen enligt fig. 3, varvid dock förbindningen 21 mellan de bägge drivtapparna 8, 9 i fig. 3 bortfaller. Här är även tappen 10 drivtapp, med vilken exempelvis en pneumatisk motor 58 ingri- per; även med drivtappen 8 ingriper en pneumatisk motor 59.The flap valve according to Fig. H corresponds to the embodiment according to Fig. 3, wherein, however, the connection 21 between the two the drive pins 8, 9 in Fig. 3 are omitted. Here is also pin 10 drive pin, with which, for example, a pneumatic motor 58 is engaged per; also with the drive pin 8 a pneumatic motor 59 engages.
Klaffarna 6, 9 är stängda, varvid spärrventilerna H6, M7 ge- nom stiften 48, H9 är öppna. Är i det visade läget lednings- systemet vid anslutningen 3 fyllt med rengöringslösning och anslutningen U med produkten, kan klaffen 6 genom motorn 58 öppnas oberoende av klaffen 7, varigenom rengöringslösningen spolar över klaffen 6 och klafftätningen 12. En del av ren- göringsvätskan rinner genom den i motsats mot spärrventilen 47 öppna ventilen H6 ut i det fria. Som säkerhet mot bland- ning förutsättes härvid att produkttrycket är högre än trycket på rengöringsvätskan, så att i fall av defekt på klafftätningen 13 produkten kan komma in i rengöringsvätskan, men aldrig tvärtom. På jämförbart sätt kan även klaffen 7 med sin klafftätning 13 rengöras. .,...- ...__.__-..-...-....-.._.-.--._--~-.--..~.. . soon QUALITYThe flaps 6, 9 are closed, the shut-off valves H6, M7 being nom pins 48, H9 are open. Is in the displayed position wiring the system at connection 3 filled with cleaning solution and connection U with the product, the flap 6 can pass through the motor 58 opens independently of the flap 7, whereby the cleaning solution coils over flap 6 and flap seal 12. Part of the cleaning the make-up liquid flows through it in opposition to the shut-off valve 47 open the valve H6 out into the open. As security against mixed In this case, it is assumed that the product pressure is higher than the pressure of the cleaning fluid, so that in case of defect on the valve seal 13 the product can enter the cleaning liquid, but never the other way around. In a comparable way, flap 7 can also be included its flap seal 13 is cleaned. ., ...- ...__.__-..-...-....-.._.-. - ._-- ~ -.-- .. ~ ... soon QUALITY
Claims (8)
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 |
---|---|
SE8008376L SE8008376L (en) | 1981-06-02 |
SE442332B true SE442332B (en) | 1985-12-16 |
Family
ID=6087445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
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) |
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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 |
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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 |
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
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 |
DE2948534C2 (en) | 1988-05-11 |
NL181947B (en) | 1987-07-01 |
IT1134508B (en) | 1986-08-13 |
DE2948534A1 (en) | 1981-07-16 |
DK151498C (en) | 1988-05-30 |
GB2064730A (en) | 1981-06-17 |
GB2064730B (en) | 1984-07-11 |
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