DE669318C - Safety valve - Google Patents

Safety valve

Info

Publication number
DE669318C
DE669318C DED75004A DED0075004A DE669318C DE 669318 C DE669318 C DE 669318C DE D75004 A DED75004 A DE D75004A DE D0075004 A DED0075004 A DE D0075004A DE 669318 C DE669318 C DE 669318C
Authority
DE
Germany
Prior art keywords
pressure
safety valve
pump
valve
acts
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
Application number
DED75004A
Other languages
German (de)
Inventor
Dr Hermann Engelhard
Erich Kindermann
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft 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 Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Priority to DED75004A priority Critical patent/DE669318C/en
Priority to NL87189A priority patent/NL49996C/xx
Priority to AT158361D priority patent/AT158361B/en
Priority to CH204346D priority patent/CH204346A/en
Application granted granted Critical
Publication of DE669318C publication Critical patent/DE669318C/en
Expired 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid
    • 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
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0433—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means
    • 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
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0675—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever
    • G05D16/0694—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever using a spring-loaded membrane with a spring-loaded slideable obturator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Reciprocating Pumps (AREA)
  • Safety Valves (AREA)

Description

Sicherheitsventil Die Erfindung betrifft ein Sicherheitsventil für Hochdruckleitungen, insbesondere von Pumpen, zum Umfüllen von Sauerstoff aus großen Vorratsbehältern in kleinere Verbrauchsbehälter, wie sie beispielsweise bei frei tragbaren Atmungsgeräten Verwendung -finden.Safety valve The invention relates to a safety valve for High pressure lines, especially pumps, for transferring oxygen from large Storage containers in smaller consumption containers, such as those for free using portable breathing apparatus.

Die Aufspeicherung von Sauerstoff erfolgt handelsüblich in Flaschen -, die 4o bis 5o 1 Inhalt haben und in denen der Sauerstoiff unter einem Druck von i5oatü steht, während die Gebrauchsflaschen nur etwa, i bis 2 1 Inhalt haben und mit Sauerstoff der gleichen Spannung gefüllt werden müssen. Die für diesen Zweck verwendeten stationären oder transportablen Einrichtungen bestehen meist aus einer Vorratsbatterie von drei üder mehr Flaschen Lind einer Pumpe, an die sowohl die Vorratsbatterie als auch die. zu füllenden Gebrauchsflaschen angeschlossen wer-den können. Im allgemeinen wird bei der Füllung der Verbrauchsflaschen so. vorgegangen, daß nacheinander aus drei Vorratsflaschen aufgefüllt wird, die nach mehrfacher Entnahme von Sauerstoff verschiedenen Druck aufweisen, wobei man zuerst aus der Flasche mit der -niedrigsten Druckstufe auffüllt.The storage of oxygen is usually done in bottles - which have 4o to 5o 1 content and in which the oxygen is under a pressure of i5oatü, while the utility bottles only have about 1 to 2 1 content and must be filled with oxygen of the same voltage . The stationary or portable devices used for this purpose usually consist of a storage battery of three or more bottles and a pump to which both the storage battery and the. used bottles to be filled can be connected. In general, this is how it is used when filling the consumable bottles. proceeded that successively filled from three storage bottles, which have different pressure after multiple withdrawals of oxygen, first filling from the bottle with the lowest pressure level.

Während bei von Hand bedienten Umfüllpumpen eine Gefahr, daß in der Verbrauchsflasche ein Druck über i5oatü erzeugt wird, kaum besteht, da der die Pumpe Bedienende durch einen Druckanzeiger und den wachsenden Pumpenwiderstand auf die beendete Füllung aufmerksam gemacht wird, muß bei m,echanisch angetriebenen Umfüllpumpen durch- Einschaltung eines überdruckventils Vorsorge gegen überlastun- getroffen werden.While in hand-operated transfer pumps there is a risk that in the Consumption bottle a pressure is generated via i5oatü, hardly exists because of the pump Operator by a pressure gauge and the increasing pump resistance on the When filling is completed, attention must be paid to m, mechanically driven transfer pumps by- Activation of a pressure relief valve precaution against overload to be hit.

t> ID Da es bei derartigen mechanisch angetri#2-t benen Umfüllpumpen vorkommen kann, dg4.#l der die Pumpe Bedienende nicht ständig der Pumpe bleibt, so wird bei Erreichung beabsichtigten Höchstdruckes zwar das hierfür voreingestellte Sicherheitsventil durch selbsttätiges öffnen eine überschreitung des Höchstdruckes vermeiden; da aber die bisher üblichen Sicherheitsventile so eingerichtet sind, daß sie ins Freie abblasen, so. wird dabei in kurzer Zeit ein großer Teil des Sauerstoffes der Vorratsflasche, aus der die Pumpe ständig weitelfördert, verlorengehen.t> ID Since it is the case with such mechanically driven transfer pumps can happen, dg4. # l the person operating the pump does not stay at the pump all the time, so, when the intended maximum pressure is reached, the one preset for this is Safety valve opens automatically if the maximum pressure is exceeded avoid; but since the previously common safety valves are set up in such a way, that they blow off into the open, so. becomes a large part of the oxygen in a short time the storage bottle, from which the pump continues to deliver, get lost.

Um diesen mit der Zeit recht kostspielig werdenden Verlust zu vermeiden, wird gemäß der Erfindung die Auslaßseite des Sicherheitsventils mit der Saugseite der Pump-. verbunden und das Sicherheitsventil außer durch eine fest:eingestellte Belastung noch zusätzlich durch eine dem wechselnden Druck der Saugseite entsprechende Kraft belastet, so. daß das Sicherheitsventil stets erst nach Eireichundes vorgeschriebenen Höchstdruckes abbläst.To avoid this loss, which can become quite costly over time, according to the invention, the outlet side of the safety valve with the suction side the pump. connected and the safety valve except for a fixed: set Additional load due to a pressure corresponding to the changing pressure on the suction side Force loaded so. that the safety valve is always prescribed according to Eireichundes Blows off the maximum pressure.

Es ist zwar bei Abfüllverdichtern bereits bekanntgeworden, die Auslaßseite des Sicherheitsventils mit der Saugseite in Verbindung zu bringen. Da hierbei aber auf der Saugseite stets die gleiche Spannung (Atrno,-sphärendruck) herrscht, also, die gleichen Bedingungen für das Sicherheitsventil vorlagen, als wenn es ins Freie abbläst, so bestanden hier für die Anordnung einer solchen Verbindung keine Schwierigkeiten. Bei den Umfüllverdichtern nach der Erfindung haben aber, wie schon oben ausgeführt wurde, die Vorratsbehälter, an die die Saugleitung des Verdichters angeschlossen wird, je nach dem Grade ihrer Entleerung die verschiedensten, innerhalb weit-er Grenzen wechselnden Drucke. je nach der Ausbildung des Sicherheitsventils würde daher bei Verbindung der Auslaßseite, des Ventils# mit der Pumpensaugleitung der in ihr herrschende variableiDruck dasVentil zusätzlich belasten oder wie bei dern dargestellten Ausführungsbeispiel entlasten, so daß ein gleichmäßiger Füllungsdruck in den Verbrauchsbehältern nicht zu erreichen wäre. Durch die vorstehend angegebene Lösung sind aber diese Schwierigkeiten vermieden worden.It has already become known in filling compressors to bring the outlet side of the safety valve into connection with the suction side. However, since the same voltage (atrno, spherical pressure) always prevails on the suction side, i.e. the same conditions existed for the safety valve as when it blows into the open, there were no difficulties here for the arrangement of such a connection. In the case of the transfer compressors according to the invention, however, as has already been explained above, the storage containers to which the suction line of the compressor is connected have the most varied pressures that vary within wide limits, depending on the degree of their emptying. Depending on the design of the safety valve, when the outlet side of the valve # is connected to the pump suction line, the variable pressure prevailing in it would additionally load the valve or, as in the exemplary embodiment shown, relieve it, so that a uniform filling pressure in the consumption containers could not be achieved. However, these difficulties have been avoided by the solution given above.

Eine vorteilhafte Ausführungsform des Ventils nach der Erfindung besteht darin, daß das Ventil in ein-cm unter dem Pumpendruck stehenden Raum angeordnet und dieser durch eine Membran abgeschlossen ist, auf deren Außenseite einerseits die fest einstellbare Belastung und zusätzlich mittels einer Hilfsmembran der variable Druck der Pumpensaugseite. einwirkt, und daß der Gesamtdruck von der Membran auf das im Sinne des öffnens federbelastetc Ventil übertragen wird. Die übeitragung der Kräfte auf bzw. von der ',r*'embran erfolgt zweckmäßi g durch Druck-und Hebel.An advantageous embodiment of the valve according to the invention consists in that the valve is arranged in a space one centimeter below the pump pressure and this is closed off by a membrane, on the outside of which on the one hand the fixed adjustable load and, in addition, by means of an auxiliary membrane, the variable pressure on the pump suction side . acts, and that the total pressure is transmitted from the membrane to the spring-loaded valve in the sense of opening. The übeitragung of forces to or from the ', r *' embran carried zweckmäßi g by printing and lever.

Zeichnung zeigt ein Ausführungs-1 des. Ventils nach der Erfindung.The drawing shows an embodiment 1 of the valve according to the invention.

Das Gehäuse i des Sicherheitsv#entils ist mittels des Stutzens 2 an die Druckleitung der Pumpe angeschlossen. Der Stutzen mündet in einen Hohlraum 3 des Gehäuses, der mittels der Abströmöffnung 4 des Ventils mit dem zur Saugleitung der Pumpe führ-enden Stutzen 5 in Verbindung steht. Die Öffnung 4 wird durch den Ventilkörper 7 verschlossen o-# rper wirkt eine gehalten; auf den Ventilkö im Sinne des öffnens angeordnete einstellbare Feder 6 ein. Der Druckraum 3 wird noch durch eine M#einbran 9 abgeschlossen, die ihren Druck mittels des Druckstückes io und eines Hebels 8 auf den Ventilkörper 7 Übcrträgt, und zwar entgegen dem Druck der Feder 6 auf das Ventil schließend einwirkt. Auf der anderen Seite der Membran 9 wird diese durch eine einstellbare starke Feder i i unter Vermittlung eines Hebels 12 und eines Druckstückes 13 belastet.The housing i of the safety valve is connected to the pressure line of the pump by means of the connector 2. The connector opens into a cavity 3 of the housing, which is connected to the connector 5 leading to the suction line of the pump by means of the outflow opening 4 of the valve. The opening 4 is closed by the valve body 7 o- # rper holds one; adjustable spring 6 arranged on the valve head in the sense of opening. The pressure chamber 3 is closed by an M # burnt 9 , which transfers its pressure to the valve body 7 by means of the pressure piece io and a lever 8 , and acts against the pressure of the spring 6 to close the valve. On the other side of the membrane 9 , it is loaded by an adjustable strong spring ii with the mediation of a lever 12 and a pressure piece 13.

In dem Ventilgehäus#e i ist nochein zweiter, durch eine Membran 14 abgeschlossener Druckraum 15 vorgesehen, der aber durch eine Leitung 16 mit der Pump ensaugseite bzw. dem Stutzen 5 in Verbindung steht. Die Membran 14 wirkt über ein Druckstück 17 auf einen üinarmigen Hebel 18 ein, der unter eine Verlängerung ig des Haupthebels 12 greift, so daß auch der wechselnde Gegendruck der Saugleitung, der bei der vorliegend gewählten Anordnung das Ventil 7 entlasten -%?vürde, als entsprechende zusätzliche Belastung auf die Hauptmembran und damit am Ventil zur Wirkung kommt.In the Ventilgehäus # ei nochein second, closed by a diaphragm 14 pressure chamber 15 is provided, which is but ensaugseite through a conduit 6 with the pump 1 or the connecting piece 5 in connection. The membrane 14 acts via a pressure piece 17 on a single-armed lever 18, which engages under an extension ig of the main lever 12, so that the alternating back pressure of the suction line, which relieves the valve 7 in the presently selected arrangement -%? corresponding additional load on the main diaphragm and thus on the valve comes into effect.

Claims (2)

PATENTANSPRÜCHE: i. Sicherheitsv#entil, dessen Auslaßseite mit der Satigseite einer Pumpe verbunden ist, dadurch gekennzeichnet, daß beim Anschluß des Sicherheitsventils an Umfüllpumpen für hochgespannte Gase, deren Saugleitung an Vorratsbehälter wechselnder Spannung angeschlossen wird, auf das Sicherheitsv-entil außer einer fest eingestellten Belastung#noch eine dem wechselnden Druck der Pumpensaugseite entsprechende Kraft einwirkt. PATENT CLAIMS: i. Safety valve, the outlet side of which with the Satigseite a pump is connected, characterized in that when connecting of the safety valve on transfer pumps for high-pressure gases, their suction line is connected to the storage tank with changing voltage, to the safety valve In addition to a fixed load #, another one to the changing pressure on the pump suction side corresponding force acts. 2. Sicherheitsventil nach Anspruch i, dadurch gekennzeichnet, daß das Sicherheitsventil (7) in einem unter dem Druclz der Pumpe stehenden Raum (3) angeordnet und dieser durch eine Membran (9) abgeschlossen ist, auf deren Außenseite die fest eingestellte Belastung der Feder (ii) und zusätzlich mittels einer Hilfsinenibran (14) der wechselnde Druck der Punipensaugseite einwirkt, und daf,) der auf I die Men-lbran (9) einwirkende Gesamtdruck auf das im Süme des öffnens federbelastete Velltil (7) einwirkt. 3. Sicherheitsventil nach Anspruch i und 2, dadurch gekennzeichnet, daf,) die übertragung der Kräfte auf bzw. von den Membranen (9,14) durch Druckstücke (10, 13, 17) und Hebel (8, 12, 18) erfolgt.2. Safety valve according to claim i, characterized in that the safety valve (7) is arranged in a space (3) under the pressure of the pump and this is closed by a membrane (9) , on the outside of which the fixed load on the spring ( ii) and, in addition, by means of an auxiliary line (14), the changing pressure on the suction side of the puncture acts, and that,) the total pressure acting on the line (9 ) acts on the spring-loaded valve element (7) in the sum of the opening. 3. Safety valve according to claim i and 2, characterized in that the forces are transmitted to and from the membranes (9, 14) by pressure pieces (10, 13, 17) and levers (8, 12, 18).
DED75004A 1937-04-04 1937-04-04 Safety valve Expired DE669318C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DED75004A DE669318C (en) 1937-04-04 1937-04-04 Safety valve
NL87189A NL49996C (en) 1937-04-04 1938-03-31
AT158361D AT158361B (en) 1937-04-04 1938-04-02 Safety valve for high pressure lines of pumps, in particular of transfer pumps for high-pressure gases.
CH204346D CH204346A (en) 1937-04-04 1938-04-02 Method and device for transferring high-tension gases using transfer pumps.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED75004A DE669318C (en) 1937-04-04 1937-04-04 Safety valve

Publications (1)

Publication Number Publication Date
DE669318C true DE669318C (en) 1938-12-22

Family

ID=37037064

Family Applications (1)

Application Number Title Priority Date Filing Date
DED75004A Expired DE669318C (en) 1937-04-04 1937-04-04 Safety valve

Country Status (4)

Country Link
AT (1) AT158361B (en)
CH (1) CH204346A (en)
DE (1) DE669318C (en)
NL (1) NL49996C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087863B (en) * 1958-06-06 1960-08-25 Bwg Bergwerk Walzwerk Overpressure safety valve
DE1200089B (en) * 1958-12-13 1965-09-02 Bosch Gmbh Robert Spring-loaded pressure relief valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928502C2 (en) * 1979-07-14 1984-10-18 Bopp & Reuther Gmbh, 6800 Mannheim Spring-loaded safety valve
ATE180557T1 (en) * 1995-08-07 1999-06-15 Cyphelly Ivan J GAS LOADING SYSTEM FOR HIGH PRESSURE CYLINDERS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087863B (en) * 1958-06-06 1960-08-25 Bwg Bergwerk Walzwerk Overpressure safety valve
DE1200089B (en) * 1958-12-13 1965-09-02 Bosch Gmbh Robert Spring-loaded pressure relief valve

Also Published As

Publication number Publication date
CH204346A (en) 1939-04-30
AT158361B (en) 1940-04-10
NL49996C (en) 1941-02-18

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