DE2801950A1 - Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosion - Google Patents
Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosionInfo
- Publication number
- DE2801950A1 DE2801950A1 DE19782801950 DE2801950A DE2801950A1 DE 2801950 A1 DE2801950 A1 DE 2801950A1 DE 19782801950 DE19782801950 DE 19782801950 DE 2801950 A DE2801950 A DE 2801950A DE 2801950 A1 DE2801950 A1 DE 2801950A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- valve body
- interior
- housing
- explosion
- 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
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 9
- 229920003023 plastic Polymers 0.000 title claims abstract description 4
- 239000004033 plastic Substances 0.000 title claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004073 vulcanization Methods 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/26—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in either direction
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
- F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/006—Safety valves; Equalising valves, e.g. pressure relief valves specially adapted for shelters
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Check Valves (AREA)
- Safety Valves (AREA)
Abstract
Description
BE 18"362BE 18 "362
Hugo Rickenbach, St. Gallen (Schweiz)Hugo Rickenbach, St. Gallen (Switzerland)
Explosionsschutz- und Flammenrückschlagschutz-VentilExplosion protection and flashback protection valve
Die Erfindung betrifft ein Explosionsschutz- und Flammenrückschlagschutz-Ventil nach dem Oberbegriff des Anspruchs 1.The invention relates to an explosion protection and flame flashback protection valve according to the preamble of claim 1.
Der Erfindung liegt die Aufgabe zugrunde, ein Ventil nach dem Oberbegriff des Anspruchs 1 so zu gestalten, dass beim Auftreten einer Druckschwankung zwar ein unmittelbarer Abschluss des Ventils erfolgt, jedoch die Teile für die Führung und Arretierung des Ventilkörpers durch etwa auftretenden Explosionsstaub nicht verstaubt werden, so dass eine rasche Einstellung der Betriebslage des Ventilkörpers möglich ist.The invention is based on the object of a valve according to the preamble of claim 1 so that when a pressure fluctuation occurs, the valve is closed immediately, however, the parts for guiding and locking the valve body are not covered with dust by any explosion dust, so that a quick adjustment of the operating position of the valve body is possible.
Diese Aufgabe wird gemäss der Erfindung durch die im kennzeichnenden Teil des Anspruchs 1 enthaltenen Merkmale gelöst.This object is achieved according to the invention by the in the characterizing Part of claim 1 contained features solved.
Die Erfindung ist in der Zeichnung in einem Ausführungsbeispiel dargestellt und nachfolgend beschrieben, wobei die Figur einen Längsschnitt durch ein schematisch dargestelltes Explosionsschutz- und Flammenrückschlagschutz-Ventil zeigt. Das Ventil weist zwei Leitungsanschlüsse mit Flanschen 2, 12 zum Anschluss an eine Rohrleitung auf. Da das Ventil symmetrisch aufgebaut ist, spielt es keine Rolle, an welcher Seite das zu schützende Objekt angeschlossen wird. Das dargestellte Ventil weist ein zweiteiliges Gehäuse 10 mit einer kugelförmigen Mittelpartie auf. Die beiden Teile sind genau gleich ausgeführt und weisen eine halbkugelförmige Partie auf, anThe invention is shown in the drawing in an exemplary embodiment and described below, the figure being a Shows a longitudinal section through a schematically illustrated explosion protection and flame flashback protection valve. The valve has two Line connections with flanges 2, 12 for connection to a pipeline. Since the valve is symmetrical, it plays It does not matter which side the object to be protected is connected to. The valve shown has a two-part housing 10 a spherical middle section. The two parts are exactly the same and have a hemispherical part
«09833/0732«09833/0732
deren Rand ein Flansch 9 angeordnet ist. Mit Hilfe dieser Flanschenthe edge of which a flange 9 is arranged. With the help of these flanges
9 werden die beiden Teile 10 zusammengeschraubt. Die Gehäuseteile9 the two parts 10 are screwed together. The housing parts
10 weisen Stutzen 10a auf, in denen Halterungen 3 angeordnet sind, welche sternförmig angeordnete Stege 13a und in der Gehäuseachse gehalterte Kappen 13b aufweisen. In den Kappen 13b ist eine Führungsstange 5 gelagert, auf welcher ein dünnwandiger, hohlschalenförmiger Ventilkörper 7 längsbeweglich geführt ist. Mit dem Ventilkörper 7 ist eine Führungshülse 6 fest verbunden, die den Ventilkörper 7 durchdringt und auf beiden Seiten etwas aus denselben vorsteht. Im Innern der Führungshülse 6 sind beidseits des Ventilkörpers 7 Lagerbüchsen 13 angeordnet, durch welche der Ventilkörper 7 auf der Führungsstange 5 geführt ist. Die Führungshülse 6 dient somit der Führung des Ventilkörpers 7 auf der Führungsstange und bildet zudem ein versteifendes Element für den Ventilkörper 7. Der geschlossene Hohlraum des Ventilkörpers 7 ist mit einem geeigneten Kunststoff ausgefüllt, beispielsweise mit Polyurethan, der dämpfende Eigenschaften aufweist und der auch einen Innendruck zur Erhöhung der Stabilität des Ventilkörpers, der deshalb sehr dünnwandig und damit leicht ausgeführt werden kann, erzeugt.10 have nozzles 10a, in which brackets 3 are arranged, which have webs 13a arranged in a star shape and caps 13b held in the housing axis. In the caps 13b is a Guide rod 5 mounted on which a thin-walled, hollow-shell-shaped Valve body 7 is guided in a longitudinally movable manner. With the valve body 7, a guide sleeve 6 is fixedly connected to the Penetrates valve body 7 and protrudes slightly from the same on both sides. Inside the guide sleeve 6 are on both sides of the Valve body 7 bearing bushes 13 arranged through which the valve body 7 is guided on the guide rod 5. The guide sleeve 6 thus serves to guide the valve body 7 on the guide rod and also forms a stiffening element for the valve body 7. The closed cavity of the valve body 7 is filled with a suitable plastic, for example with polyurethane, the Has damping properties and which also has an internal pressure to increase the stability of the valve body, which is therefore very thin-walled and thus can be easily carried out.
Beim Auftreten einer Druckschwankung wird der Ventilkörper 7 in eine der beiden Schliesslagen bewegt, von denen die eine durch die gestrichelte Linie 15 dargestellt ist. Um das Aufschlagen des Ventilkörpers 7 auf das Gehäuse 10 zu dämpfen und gleichzeitig eine gute Dichtung zu erzielen, ist am Uebergang der Stutzen 10a zum halbkugelförmigen Teil der Gehäuseteile 10 eine elastische DichtungWhen a pressure fluctuation occurs, the valve body 7 is moved into one of the two closed positions, one of which by the dashed line 15 is shown. To dampen the impact of the valve body 7 on the housing 10 and at the same time a To achieve a good seal, there is an elastic seal at the transition from the connection piece 10a to the hemispherical part of the housing parts 10
11 angeordnet, die an der Innenwand des Gehäuses 10, z.B. durch Aufvulkanisieren, befestigt ist.11, which is attached to the inner wall of the housing 10, for example by vulcanization.
Die Kappen 13b für die Lagerung der Führungsstange 5 sind ein Teil einer Haube 20, welche sich rohrförmig gegen den Ventilkörper 7 erstreckt. In dem Innenraum 21 der beiden Hauben 20 ist je eine Druckfeder 22 auf der Führungsstange 5 gelagert, die sich einer-The caps 13b for mounting the guide rod 5 are a part a hood 20 which extends tubularly against the valve body 7. In the interior 21 of the two hoods 20 is one each Compression spring 22 mounted on the guide rod 5, which is a-
809833/0732809833/0732
seits an der Kappe 13b und andererseits an der Lagerbüchse 13 abstützen. Durch die beiden Federn 22 wird der Ventilkörper 7 in der Mittellage, welche die Normallage des Ventils darstellt, gehalten. In dieser Mittellage ragen die Enden der Führungshülse in den Innenraum 21 und tragen je einen Haltering 4, der auf dem Ende der Führungshülse in axialer Richtung, z.B. durch eine Gewindeverbindung, einstellbar ist. Der zwischen dem Innenraum und dem Ende der Führungshülse 6 vorhandene Spalt wird durch ein elastisches Dichtungselement 23, z.B. durch einen Dichtungsbalg 23, abgeschlossen. In den Innenraum 21 jeder Haube 20 ragt ein Anschlag 24, der das Ende einer sich durch das Ventilgehäuse 10 erstreckenden Anschlagstange 25 darstellt. Die Haltestange 25 ist von einem Schutzrohr 26 umgeben, welches sich durch die Wand des Gehäuses 10 erstreckt und in den Innenraum 21 mündet. Die Haltestange 25 weist einen Anschlag 27 auf, auf den eine Feder 28 drückt. Durch einen Handgriff 29 kann der Anschlag 24 nach Bedarf zurückgezogen werden.on the one hand on the cap 13b and on the other hand on the bearing bush 13 prop up. By the two springs 22, the valve body 7 is in the middle position, which represents the normal position of the valve, held. In this central position, the ends of the guide sleeve protrude into the interior 21 and each wear a retaining ring 4, which is on the The end of the guide sleeve is adjustable in the axial direction, e.g. by means of a threaded connection. The one between the interior and the end of the guide sleeve 6 existing gap is by an elastic sealing element 23, e.g. by a sealing bellows 23, closed. A stop 24 protrudes into the interior 21 of each hood 20, the end of a stop extending through the valve housing 10 extending stop rod 25 represents. The support rod 25 is surrounded by a protective tube 26 which extends through the wall of the Housing 10 extends and opens into the interior 21. The holding rod 25 has a stop 27 on which a spring 28 presses. The stop 24 can be withdrawn as required by means of a handle 29.
Tritt eine Druckschwankung auf, so wird der Ventilkörper 7 auf den einen der Ventilsitze 11 gedrückt. In der Schliesslage des Ventilkörpers 7 rastet der Haltering 4 in den Anschlag 24 ein, so dass der Ventilkörper in der Schliesslage gehalten v/ird. Damit der Ventilkörper 7 wieder seine Betriebslage einnimmt, genügt es, von aussen her durch Ziehen des Handgriffes 29 den Anschlag 24 so weit zurückzuziehen, dass der Haltering 4 freigegeben wird. Durch die Kraft der Feder 22 wird der Ventilkörper 7 wieder in seine Betriebslage gedrückt. Dadurch, dass der Innenraum 21 der Hauben praktisch vollständig vom Innenraum des Gehäuses 10 getrennt ist, kann auch ein gegebenenfalls entstehender Expiosionsstaub nicht in den Innenraum 21 eintreten und die Lagerbüchsen 13 verschmutzen. Die leichte Verschiebbarkeit des Ventilkörpers 7 bleibt dadurch gewährleistet.If a pressure fluctuation occurs, the valve body 7 is on the one of the valve seats 11 pressed. In the closed position of the valve body 7, the retaining ring 4 engages in the stop 24, so that the valve body is held in the closed position. So that the valve body 7 resumes its operating position, it is sufficient from from the outside, by pulling the handle 29, pull the stop 24 back so far that the retaining ring 4 is released. Through the The valve body 7 is pushed back into its operating position by force of the spring 22. In that the interior 21 of the hoods is practically completely separated from the interior of the housing 10, any explosion dust that may arise cannot enter enter the interior space 21 and contaminate the bearing bushes 13. The easy displaceability of the valve body 7 remains as a result guaranteed.
«09833/0732«09833/0732
Durch die wegnehmbare Abdeckung 30 im Gehäuse 10 kann das Innere und insbesondere die leichte Beweglichkeit des Ventilkörpers 7 kontrolliert werden. Weiter kann auch der Haltering 4 axial so eingestellt werden, dass der Haltering 4 beim Einrasten in den Anschlag 24 den Ventilkörper 7 fest auf seinem Sitz 11 hält.The removable cover 30 in the housing 10 allows the interior and in particular the easy mobility of the valve body 7 to be controlled. Furthermore, the retaining ring 4 can be adjusted axially so that the retaining ring 4 when engaging in the Stop 24 holds the valve body 7 firmly on its seat 11.
6.12.1977
My/ipDecember 6, 1977
My / ip
£09831/0732£ 09831/0732
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH94173A CH554509A (en) | 1973-01-23 | 1973-01-23 | EXPLOSION PROTECTION AND FLAME RETURN PROTECTION VALVE. |
| CH171177A CH606882A5 (en) | 1977-02-11 | 1977-02-11 | Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2801950A1 true DE2801950A1 (en) | 1978-08-17 |
| DE2801950C2 DE2801950C2 (en) | 1991-10-10 |
Family
ID=33453254
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2402496A Withdrawn DE2402496A1 (en) | 1973-01-23 | 1974-01-19 | EXPLOSION PROTECTION AND FLAME RETURN PROTECTION VALVE |
| DE19782801950 Granted DE2801950A1 (en) | 1973-01-23 | 1978-01-18 | Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosion |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2402496A Withdrawn DE2402496A1 (en) | 1973-01-23 | 1974-01-19 | EXPLOSION PROTECTION AND FLAME RETURN PROTECTION VALVE |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE2402496A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001002760A1 (en) * | 1999-06-29 | 2001-01-11 | Water Corporation | A hydrant valve |
| RU2177576C2 (en) * | 2000-03-21 | 2001-12-27 | Новиков Михаил Иванович | Check valve |
| AU761637B2 (en) * | 1999-06-29 | 2003-06-05 | Hydramet Pty Ltd | A hydrant valve |
| WO2004048828A1 (en) | 2002-11-22 | 2004-06-10 | Rico-Sicherheitstechnik Ag | Blocking element, especially an explosion protection valve |
| CH694303A5 (en) * | 2000-03-07 | 2004-11-15 | Rico Sicherheitstechnik Ag | Explosion protection valve involves housing in which is at least one closure body guided on a guide rod and from an open position predefined through spring force |
| CH695066A5 (en) | 2001-03-28 | 2005-11-30 | Rico Sicherheitstechnik Ag | Explosion protection valve. |
| DE102008018116A1 (en) * | 2008-04-09 | 2010-06-02 | Viega Gmbh & Co. Kg | flow Switch |
| DE102010050782A1 (en) * | 2010-11-10 | 2012-02-16 | Dominic Becker | Safety fitting for locking a line |
| DE10141348B4 (en) * | 2000-09-01 | 2013-05-08 | Rico-Sicherheitstechnik Ag | Explosion protection valve |
| CN105240549A (en) * | 2015-10-30 | 2016-01-13 | 无锡斐冠工业设备有限公司 | Base for bilateral anti-shockwave ventilation round valve and round valve |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3967705A (en) * | 1975-04-02 | 1976-07-06 | The Bendix Corporation | Application adjuster for disc brake |
| GB9906439D0 (en) * | 1999-03-19 | 1999-05-12 | Boc Group Plc | Improvements in flame arresters |
| CN108916432B (en) * | 2018-08-13 | 2020-04-10 | 徐州八方安全设备有限公司 | Bidirectional explosion-proof valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3085589A (en) * | 1960-06-06 | 1963-04-16 | Asa D Sands | Safety valve |
| DE1878249U (en) * | 1963-06-25 | 1963-08-22 | Heinrich Lindenbeck Fa | QUICK-CLOSING VALVE FOR INTAKE SOCKET OF AIR PROTECTION ROOMS. |
| DE1891718U (en) * | 1962-12-03 | 1964-04-23 | Ewers & Miesner Hartgusswerk U | VALVE FOR AIR SUPPLY AND EXHAUST PIPES FROM PROTECTED ROOMS. |
| AT314151B (en) * | 1971-01-18 | 1974-03-25 | Rickenbach Hugo | Trip valve |
| CH554509A (en) * | 1973-01-23 | 1974-09-30 | Rickenbach Hugo | EXPLOSION PROTECTION AND FLAME RETURN PROTECTION VALVE. |
| DE7318404U (en) * | 1973-05-16 | 1985-11-14 | Gok Regler- Und Armaturen Gmbh & Co Kg, 5200 Siegburg, De |
-
1974
- 1974-01-19 DE DE2402496A patent/DE2402496A1/en not_active Withdrawn
-
1978
- 1978-01-18 DE DE19782801950 patent/DE2801950A1/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3085589A (en) * | 1960-06-06 | 1963-04-16 | Asa D Sands | Safety valve |
| DE1891718U (en) * | 1962-12-03 | 1964-04-23 | Ewers & Miesner Hartgusswerk U | VALVE FOR AIR SUPPLY AND EXHAUST PIPES FROM PROTECTED ROOMS. |
| DE1878249U (en) * | 1963-06-25 | 1963-08-22 | Heinrich Lindenbeck Fa | QUICK-CLOSING VALVE FOR INTAKE SOCKET OF AIR PROTECTION ROOMS. |
| AT314151B (en) * | 1971-01-18 | 1974-03-25 | Rickenbach Hugo | Trip valve |
| CH554509A (en) * | 1973-01-23 | 1974-09-30 | Rickenbach Hugo | EXPLOSION PROTECTION AND FLAME RETURN PROTECTION VALVE. |
| DE7318404U (en) * | 1973-05-16 | 1985-11-14 | Gok Regler- Und Armaturen Gmbh & Co Kg, 5200 Siegburg, De |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001002760A1 (en) * | 1999-06-29 | 2001-01-11 | Water Corporation | A hydrant valve |
| GB2367603A (en) * | 1999-06-29 | 2002-04-10 | Water Corp | A hydrant valve |
| GB2367603B (en) * | 1999-06-29 | 2003-05-14 | Water Corp | A hydrant valve |
| AU761637B2 (en) * | 1999-06-29 | 2003-06-05 | Hydramet Pty Ltd | A hydrant valve |
| AU761637C (en) * | 1999-06-29 | 2005-05-26 | Hydramet Pty Ltd | A hydrant valve |
| CH694303A5 (en) * | 2000-03-07 | 2004-11-15 | Rico Sicherheitstechnik Ag | Explosion protection valve involves housing in which is at least one closure body guided on a guide rod and from an open position predefined through spring force |
| RU2177576C2 (en) * | 2000-03-21 | 2001-12-27 | Новиков Михаил Иванович | Check valve |
| DE10141348B4 (en) * | 2000-09-01 | 2013-05-08 | Rico-Sicherheitstechnik Ag | Explosion protection valve |
| CH695066A5 (en) | 2001-03-28 | 2005-11-30 | Rico Sicherheitstechnik Ag | Explosion protection valve. |
| DE10213865B4 (en) * | 2001-03-28 | 2016-06-16 | Rico-Sicherheitstechnik Ag | Explosion protection valve |
| WO2004048828A1 (en) | 2002-11-22 | 2004-06-10 | Rico-Sicherheitstechnik Ag | Blocking element, especially an explosion protection valve |
| DE102008018116A1 (en) * | 2008-04-09 | 2010-06-02 | Viega Gmbh & Co. Kg | flow Switch |
| DE102008018116B4 (en) * | 2008-04-09 | 2014-10-09 | Viega Gmbh & Co. Kg | flow Switch |
| DE102010050782A1 (en) * | 2010-11-10 | 2012-02-16 | Dominic Becker | Safety fitting for locking a line |
| DE102010050782B4 (en) * | 2010-11-10 | 2014-04-17 | Dominic Becker | Safety fitting for locking a line |
| US9333381B2 (en) | 2010-11-10 | 2016-05-10 | Dominic Becker | Safety fitting for blocking a line |
| CN105240549A (en) * | 2015-10-30 | 2016-01-13 | 无锡斐冠工业设备有限公司 | Base for bilateral anti-shockwave ventilation round valve and round valve |
| CN105240549B (en) * | 2015-10-30 | 2018-03-20 | 无锡斐冠工业设备有限公司 | A kind of bilateral shock wave resistance ventilation round valve base and round valve |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2402496A1 (en) | 1974-07-25 |
| DE2801950C2 (en) | 1991-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2942455C2 (en) | ||
| EP0253072A2 (en) | Pneumatic spring with end-stroke damping | |
| DE3122626C2 (en) | ||
| DE2540402A1 (en) | GAS SPRING WITH MECHANICAL LOCKING | |
| DE3126507A1 (en) | "ARMATURE" | |
| DE2849267C2 (en) | Gas spring | |
| DE2801950A1 (en) | Explosion and flame blow-back protection valve - has hollow plastics filled valve body readjusted for operation after explosion | |
| EP0353550B1 (en) | Positioning equipment adjustable in length | |
| EP3108168B1 (en) | Safety valve | |
| EP0447675B1 (en) | Gas spring of adjustable length | |
| DE7825656U1 (en) | Gas spring | |
| DE102014002175B3 (en) | safety valve | |
| DE2825165C2 (en) | Controllable valve for a fire extinguishing system | |
| EP0846904A1 (en) | Direct-acting valve. | |
| DE9012886U1 (en) | Safety valve for a gas cylinder filling device | |
| DE3210790A1 (en) | Pressure medium-actuated controllable shut-off valve | |
| DE9204264U1 (en) | Length-adjustable gas spring | |
| DE3034056A1 (en) | Combination meter changeover valve - reduces deposit formation using strong main flow choking during final valve closure stages | |
| DE3225559C2 (en) | Automatic door closer with hydraulic hold-open device | |
| DE2458321B2 (en) | Control valve | |
| DE7434100U (en) | Gas spring | |
| DE1922815U (en) | ADJUSTING SCREW FOR PRESSURE SPRING OF PRESSURE REGULATORS OD. DGL. | |
| DE1530207C3 (en) | Hydraulically damped shock absorption device for railroad cars | |
| DE102014012352B4 (en) | Lockable non-return valve | |
| DE2357018A1 (en) | System for sealing valve components - has folding bellows with circular disc elements on valve stem sleeve retaining bellows shape |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8162 | Independent application | ||
| 8110 | Request for examination paragraph 44 | ||
| 8125 | Change of the main classification |
Ipc: F16K 17/26 |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |