US3638499A - Device for sampling fluid of hydraulic circuit - Google Patents

Device for sampling fluid of hydraulic circuit Download PDF

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Publication number
US3638499A
US3638499A US824172A US3638499DA US3638499A US 3638499 A US3638499 A US 3638499A US 824172 A US824172 A US 824172A US 3638499D A US3638499D A US 3638499DA US 3638499 A US3638499 A US 3638499A
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US
United States
Prior art keywords
plunger
orifice
fluid
chamber
point
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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 - Lifetime
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US824172A
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English (en)
Inventor
Robert Saint-Andre
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Individual
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N2001/1031—Sampling from special places
    • G01N2001/105—Sampling from special places from high-pressure reactors or lines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation
    • Y10S251/903—Needle valves

Definitions

  • ..G0ln l/l0 operating under P comprises a hollow body [58] Field of Search ..73/422 R; 251/354, 522, 348; ing a Chamber which is connected the circuit through 222/518 very small opening which is normally closed by a point at the end of a spring-pressed plunger slidable in the chamber and 56 Ref Cted having near its point lateral channels leading into a central erences I longitudinal channel through which the sample is discharged UNITED STATES PATENTS when the plunger is pulled down against its spring so as to open the opening.
  • a controlled-leakage passage prevents ac- 770,043 9/1904 Bode et al ..l37/522 cumulation of Solid particles and keeps the device Clean so 1 988,181 l/ 1935 spaeth that subsequent samplings are not contaminated. 2,012,836 8/1935 Talbot et al... 2,844,964 7/1958 Guibert ..73/422 9 Claims, 4 Drawing Figures Q11 is Z '10 8 m Q %R s IS l1 PATENTED rm 1 1912 DEVICE FOR SAMPLING FLUID OF HYDRAULIC CIRCUIT
  • the present invention relates to a device for taking samples of the fluid ofa hydraulic circuit.
  • valve In another device of the same sort, the valve is simply subjected to the force of an opposing elastic body supported on an internal shoulder in the sampling chamber.
  • This elastic member is thus submitted directly to the high pressure of the fluid which limits the possibilities of using the apparatus.
  • the fluid soils the springs and thus contaminates subsequent samples. The excessive size of dead spaces without circulation causes an accumulation of pollutants.
  • the present invention overcomes these objections. It is an object of the invention to take samples of hydraulic circuits under pressure characterized by the fact that it is formed as a hollow body of which the chamber is put in communication with the hydraulic circuit by an orifice which is of very small diameter and is closed by the point of a needle valve member which is pierced by a lateral canal opening into a central canal, the movement of the member toward the base of the needle assuring opening of the orifice, the passage of the fluid into the chamber of the hollow body and its sampling by the lateral canals and central canal to the base of the needle valve member.
  • the liquid is thus never in contact with any springs or other mechanism since it passes directly to the base of the needle valve member in the canals where it cannot pick up any impurities. This assures the neutrality of the apparatus with respect to subsequent samplings.
  • the chamber of the hollow body preferably conforms closely to the form of the point of the needle valve member so that the dead space will be reduced as much as possible and the walls will be very nearly vertical so as to avoid all deposits. Moreover, a leakage passage is provided so that the liquid is not retained in the dead space and the leakage circuit thus assures a constant cleaning of the apparatus.
  • FIG. I is a generally vertical section of apparatus according to the invention.
  • FIG. 2 is a detailed section of a first closing device of the leakage passage
  • FIG. 3 is a detailed section of a second closing device of the leakage passage
  • FIG. 4 is a partial section along the line IVIV of FIG. 1.
  • the apparatus will be seen to comprise a body I having an interior chamber 2 in which a cylindrical plunger or needle valve member 3 provided at its upper extremity with a point 4 is displaceable.
  • the chamber 2 of the body 1 is put in communication with the hydraulic circuit where a sampling is to be effected by an orifice 5 of very small diameter.
  • the diameter of this orifice selected according to the pressure of the circuit and of which the narrowness has for its object the avoidance of too great a discharge of fluid is of the order of 0.25 mm.
  • the orifice 5 is placed in the vicinity of the center of the fluid vein where the fluid is in a zone of high velocity.
  • the orifice 5 is closed by the upper extremity of the point 4 when the member 3 maintained in its uppermost position by being resiliently supported on a collar 6 resting on a cap 7 which closes the lower end of the chamber 2.
  • the cap 7 is screwed onto the body I by threads 8.
  • a compression spring 9 is supported by the collar 6 and the upper end of the spring engages a collar 10 which is fixed on the member 3.
  • the spring 9 is calibrated in such manner that the force it exerts on the member 3 is approximately equal to or slightly greater than the force exerted by the pressure of the fluid in the circuit, the calibration being effected when the cap 7 is unscrewed so that a shoulder 6a of the collar 6 comes to rest on an abutment 11 in the body 1.
  • the member 3 is pierced near its point by lateral canals l2 and 13 which opens into the upper end of a central canal 14 extending down to an outlet 16 at the bottom of the member 3 below the lower end of the body 1.
  • the walls of the chamber 2 are so constructed as to be as close as possible to the point 4 in order to leave only a small dead space 2 communicating with the exterior by a leakage circuit 15.
  • the cap 7 When it is desired to effect a sampling, the cap 7 is completely unscrewed and removed whereupon the shoulder 6a of the collar 6 comes to rest on the abutment II, the spring 9 still exerting a sufficient force opposing the fluid pressure of the circuit on the member 3 to prevent discharge through the orifice 5.
  • the member 3 is then manually forced downwardly so that fluid can escape through the orifice 5, the lateral channels l2 and I3 and the central channel 14 and can be sampled by the outlet 16 of the member 3.
  • the cap 7 is provided with a recess 7a which can, if desired, be used to catch the fluid escaping through the outlet 16.
  • the fluid is not in communication with an mechanism such as the spring 9. It passes for the most part in the central channel 14 where no deposit of solids can occur, thereby assuring the neutrality of the apparatus with respect to future samplings. It is to obtain this advantage that the volume of the dead space 2' is reduced to a minimum. A small part of the fluid escapes by the leakage passage 15. This escapement further reduces the formation of deposits in the dead space 2 and assures that it stays perpetually clean.
  • Packings l8, 19, etc. are used at the joints to avoid all parasitic leakage.
  • FIGS. 2 and 3 show two possible arrangements for closing the leakage passage 15.
  • the first arrangement shown in FIG. 2, is a simple needle valve 20, manually manipulated by a knurled button 21, closing the orifice 15 of the leakage passage 15.
  • a stop I5" prevents the needle from being screwed completely out.
  • the second variant as illustrated in FIG. 3, comprises a pressure responsive valve 22 subjected to the force of a spring 23 supported by a small collar 24 blocked by an abutment 25.
  • the said valve 22 closes a canal 15 of the leakage passage [5 and assures the escape of fluid by the channel when the pressure of fluid in the canal 15' is sufficient to open the valve 22 against the force of the spring 23.
  • the leakage passage provides a means of achieving a circulation in the mechanism without contact with the liquid which is sampled by means of the central canal l4 and the outlet 16.
  • the system of closing the leakage passage such as that illustrated in FIGS. 2 and 3 or any other system, is for the purpose of preventing the oozing of liquid due to the accidental imperfect closing of the point 4 on its seat.
  • the valve member 3 such as that represented is large with respect to the actual dimensions of the dead space by the order of tens of cubic centimeters. in the arrangement used heretofore the dead spaces were in general so great as to cause the risk of deposit of solids and of contaminating subsequent samplings.
  • the cap 7 can be provided with a lateral projection 26 having a notch 27 of a size to slip over the above member 3 above the shoulder 28.
  • a notch 27 of a size to slip over the above member 3 above the shoulder 28.
  • a device for taking a sample of the fluid of a hydraulic circuit while operating under pressure which comprises a hollow body having a chamber communicating with said circuit by a small diameter orifice, a collar slidable in said chamber, a
  • reciprocable plunger slidable in said collar and having at one end a point engageable in said orifice to close it, a central channel extending through said plunger to the opposite end of said plunger and at least one lateral channel opening from said central channel into said chamber near said point, means for limiting movement of said collar in a direction away from said orifice, compression spring means surrounding said plunger and acting between said collar and said plunger for urging said plunger toward said orifice to close said orifice by said point, said spring means being calibrated normally to exert on said plunger a force greater than the force exerted on said plunger by the pressure fluid of said hydraulic circuit, said plunger being retractable against the force of said spring means to open said orifice and permit a sample of hydraulic fluid to flow through said channels and to be discharged from said opposite end of said plunger.
  • a sampling device further comprising a cap screwed onto an end of said body opposite said orifice and engageable with said collar to move it toward said orifice and thereby increase the pressure exerted on said plunger by said spring.
  • a sampling device in which said plunger conforms closely to the walls of said chamber so as to avoid excessive dead space in which solid particles can collect.
  • a sampling device in which a removable cap closes an end of said hollow body opposite said orifice, and in which said cap includes means engageable with said plunger to retract said plunger and thereby open said orifice.
  • a sampling device comprising a by a small diameter orifice, a plunger reciprocable in said c amber and having at one end a point engageable in said on fice to close it, a central channel extending through said plunger to the opposite end of said plunger and at least one lateral channel opening from said central channel into said chamber near said point, spring means for urging said plunger toward said orifice to close said orifice by said point, said spring means being calibrated normally to exert on said plunger a force greater than the force exerted on said plunger by the pressure fluid of said hydraulic circuit, said plunger being retractable against the force of said spring means to open said orifice and permit a sample ofhydraulic fluid to flow through said channels and to be discharged from said opposite end of said plunger, said plunger conforming closely to the walls of said chamber so as to avoid'excessive dead space in which material can collect, said body being provided with a

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
US824172A 1968-05-13 1969-05-13 Device for sampling fluid of hydraulic circuit Expired - Lifetime US3638499A (en)

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Application Number Priority Date Filing Date Title
FR151567 1968-05-13

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DE (1) DE1924502C3 (ja)
FR (1) FR1603352A (ja)
GB (1) GB1270025A (ja)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812545A (en) * 1972-07-17 1974-05-28 Dyna Logics Inc Adjustable toilet tank flush valve
FR2470960A1 (fr) * 1979-11-30 1981-06-12 Sofrance Sa Dispositif de prelevement d'un echantillon de fluide dans un circuit hydraulique
US4484482A (en) * 1982-12-16 1984-11-27 Aeroquip Corporation Fluid sampling valve
US4549440A (en) * 1982-12-16 1985-10-29 Aeroquip Corporation Fluid sampling valve
US4580453A (en) * 1984-11-13 1986-04-08 Taylor Julian S Gear case oil sampler
US4681138A (en) * 1984-08-01 1987-07-21 Veca S.R.L. Valvular device for the inflation of balloons, particularly balloons supported by tubular shafts
US4877065A (en) * 1982-03-19 1989-10-31 Wella Aktiengesellschaft Decanting device for liquids, e.g. permanent wave agents
US5296197A (en) * 1992-07-09 1994-03-22 Nl Technologies, Limited Automated sample extractor or feeder/inoculator for bioreactors and similar equipment
US5880380A (en) * 1997-04-29 1999-03-09 Goldschmidt; Norman High containment sampler
US6133022A (en) * 1992-07-09 2000-10-17 Nl Technologies, Limited Automated sample extractor or feeder/inoculator for bioreactors and similar equipment
WO2004055512A1 (de) * 2002-12-14 2004-07-01 Zf Friedrichshafen Ag Vorrichtung und verfahren zur prüfung eines getriebes
US6821773B1 (en) 1992-07-09 2004-11-23 Nl Technologies, Ltd. Drainable ferrule valve design
US20050016620A1 (en) * 2002-04-26 2005-01-27 Stephen Proulx Disposable, sterile fluid transfer device
US20050132821A1 (en) * 2003-12-23 2005-06-23 Furey James F. Disposable, pre-sterilized fluid receptacle sampling device
US20060272432A1 (en) * 2005-06-01 2006-12-07 Millipore Corporation Sterile sampling device
US20070246680A1 (en) * 2006-04-19 2007-10-25 Richard Chao Air valve structure for inflatable articles
US20090229671A1 (en) * 2007-11-16 2009-09-17 Millipore Corporation Fluid transfer device
US20100132121A1 (en) * 2006-04-19 2010-06-03 Richard Chao Support cushion for fast inflation and deflation
US20100154569A1 (en) * 2008-12-18 2010-06-24 Millipore Corporation Device For The Transfer Of A Medium
US20100158759A1 (en) * 2008-12-18 2010-06-24 Millipore Corporation Device For The Transfer Of A Medium
DE102010060241A1 (de) * 2010-10-28 2012-05-03 Hecht Technologie Gmbh Probenehmer
US8544497B2 (en) 2009-10-30 2013-10-01 Emd Millipore Corporation Fluid transfer device and system
US8904886B1 (en) * 1996-08-22 2014-12-09 A+ Manufacturing LLC Devices for obtaining cylinder samples of natural gas or process gas and methods therefore
CN107061793A (zh) * 2017-05-15 2017-08-18 西安石油大学 一种定值减压实时取样阀

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* Cited by examiner, † Cited by third party
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DE19538281C1 (de) * 1995-10-17 1996-10-24 Paul Dipl Ing Appelhaus Probenahmeventil zur Entnahme von flüssigen oder pastösen Proben aus einem Behälter oder Rohr
DE102004055378B4 (de) * 2004-11-09 2008-11-27 Südmo Holding GmbH Probenentnahmevorrichtung sowie Probenaufnahmebehälter
DE102006022645A1 (de) * 2006-05-12 2007-11-15 Ritag Ritterhuder Armaturen Gmbh & Co. Armaturenwerk Kg Kolbenspritze zur Entnahme von Proben eines in einer Leitung geführten gasförmigen oder flüssigen Mediums
DE102006058286B4 (de) * 2006-12-08 2009-05-14 Technische Universität München Gasentnahmeventil und dessen Anordnung in einer Brennkammer einer Verbrennungskraftmaschine sowie Verfahren zum Betrieb eines derartigen Gasentnahmeventils
CN102914454B (zh) * 2012-11-15 2015-03-25 化学工业岩土工程有限公司 一种钻孔取水器及取水方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US770043A (en) * 1903-11-09 1904-09-13 Paul Bode Safety-valve.
US1988181A (en) * 1933-04-05 1935-01-15 Universal Merit Corp Storage tank gauge
US2012836A (en) * 1933-02-09 1935-08-27 Texas Co Sampling device
US2844964A (en) * 1952-12-06 1958-07-29 Francis W Guibert Liquid sampler
US2973123A (en) * 1957-04-18 1961-02-28 Sparklets Ltd Fluid dispensing means
US2994224A (en) * 1958-09-15 1961-08-01 Jersey Prod Res Co Fluid sampler
FR1293911A (fr) * 1961-06-30 1962-05-18 Verrerie Et Materiel Pour Labo Robinet plus particulièrement destiné aux produits chimiques
US3091374A (en) * 1960-07-28 1963-05-28 Glidomatic Corp Liquid metering device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US770043A (en) * 1903-11-09 1904-09-13 Paul Bode Safety-valve.
US2012836A (en) * 1933-02-09 1935-08-27 Texas Co Sampling device
US1988181A (en) * 1933-04-05 1935-01-15 Universal Merit Corp Storage tank gauge
US2844964A (en) * 1952-12-06 1958-07-29 Francis W Guibert Liquid sampler
US2973123A (en) * 1957-04-18 1961-02-28 Sparklets Ltd Fluid dispensing means
US2994224A (en) * 1958-09-15 1961-08-01 Jersey Prod Res Co Fluid sampler
US3091374A (en) * 1960-07-28 1963-05-28 Glidomatic Corp Liquid metering device
FR1293911A (fr) * 1961-06-30 1962-05-18 Verrerie Et Materiel Pour Labo Robinet plus particulièrement destiné aux produits chimiques

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812545A (en) * 1972-07-17 1974-05-28 Dyna Logics Inc Adjustable toilet tank flush valve
FR2470960A1 (fr) * 1979-11-30 1981-06-12 Sofrance Sa Dispositif de prelevement d'un echantillon de fluide dans un circuit hydraulique
US4877065A (en) * 1982-03-19 1989-10-31 Wella Aktiengesellschaft Decanting device for liquids, e.g. permanent wave agents
US4549440A (en) * 1982-12-16 1985-10-29 Aeroquip Corporation Fluid sampling valve
US4484482A (en) * 1982-12-16 1984-11-27 Aeroquip Corporation Fluid sampling valve
US4681138A (en) * 1984-08-01 1987-07-21 Veca S.R.L. Valvular device for the inflation of balloons, particularly balloons supported by tubular shafts
US4580453A (en) * 1984-11-13 1986-04-08 Taylor Julian S Gear case oil sampler
US20050253106A1 (en) * 1992-07-09 2005-11-17 Newberg Douglas A Drainable ferrule valve design
US5296197A (en) * 1992-07-09 1994-03-22 Nl Technologies, Limited Automated sample extractor or feeder/inoculator for bioreactors and similar equipment
US5525301A (en) * 1992-07-09 1996-06-11 Nl Technologies, Ltd. Automated sample extractor or feeder/inoculator for bioreactors and similar equipment
US5786209A (en) * 1992-07-09 1998-07-28 Nl Technologies, Ltd. Automated sample extractor or feeder/inoculator for bioreactors and similar equipment
US6133022A (en) * 1992-07-09 2000-10-17 Nl Technologies, Limited Automated sample extractor or feeder/inoculator for bioreactors and similar equipment
US6821773B1 (en) 1992-07-09 2004-11-23 Nl Technologies, Ltd. Drainable ferrule valve design
US8904886B1 (en) * 1996-08-22 2014-12-09 A+ Manufacturing LLC Devices for obtaining cylinder samples of natural gas or process gas and methods therefore
US5880380A (en) * 1997-04-29 1999-03-09 Goldschmidt; Norman High containment sampler
US8579871B2 (en) 2002-04-26 2013-11-12 Emd Millipore Corporation Disposable, sterile fluid transfer device
US20050016620A1 (en) * 2002-04-26 2005-01-27 Stephen Proulx Disposable, sterile fluid transfer device
US20060142730A1 (en) * 2002-04-26 2006-06-29 Millipore Corporation Disposable, sterile fluid transfer device
US9482351B2 (en) 2002-04-26 2016-11-01 Emd Millipore Corporation Disposable, sterile fluid transfer device
US20070106264A1 (en) * 2002-04-26 2007-05-10 Millipore Corporation Disposable, sterile fluid transfer device
US8517998B2 (en) 2002-04-26 2013-08-27 Emd Millipore Corporation Disposable, sterile fluid transfer device
US20110197989A1 (en) * 2002-04-26 2011-08-18 Millipore Corporation Disposable, sterile fluid transfer device
US7927316B2 (en) 2002-04-26 2011-04-19 Millipore Corporation Disposable, sterile fluid transfer device
US8562572B2 (en) 2002-04-26 2013-10-22 Emd Millipore Corporation Disposable, sterile fluid transfer device
WO2004055512A1 (de) * 2002-12-14 2004-07-01 Zf Friedrichshafen Ag Vorrichtung und verfahren zur prüfung eines getriebes
US20050132821A1 (en) * 2003-12-23 2005-06-23 Furey James F. Disposable, pre-sterilized fluid receptacle sampling device
US8646342B2 (en) 2003-12-23 2014-02-11 Emd Millipore Corporation Disposable, pre-sterilized fluid receptacle sampling device
US20090019952A1 (en) * 2003-12-23 2009-01-22 Furey James F Disposable, pre-sterilized fluid receptacle sampling device
US20080022785A1 (en) * 2003-12-23 2008-01-31 Furey James F Disposable, pre-sterilized fluid receptacle sampling device
US8549935B2 (en) 2003-12-23 2013-10-08 Emd Millipore Corporation Disposable, pre-sterilized fluid receptacle sampling device
US7921740B2 (en) 2003-12-23 2011-04-12 Millipore Corporation Disposable, pre-sterilized fluid receptacle sampling device
US7293477B2 (en) 2003-12-23 2007-11-13 Millipore Corporation Disposable, pre-sterilized fluid receptacle sampling device
US7293475B2 (en) 2003-12-23 2007-11-13 Millipore Corporation Disposable, pre-sterilized fluid receptacle sampling device
US7578205B2 (en) 2005-06-01 2009-08-25 Millipore Corporation Sterile sampling device
US20060272432A1 (en) * 2005-06-01 2006-12-07 Millipore Corporation Sterile sampling device
US20070246680A1 (en) * 2006-04-19 2007-10-25 Richard Chao Air valve structure for inflatable articles
US20100132121A1 (en) * 2006-04-19 2010-06-03 Richard Chao Support cushion for fast inflation and deflation
US20090229671A1 (en) * 2007-11-16 2009-09-17 Millipore Corporation Fluid transfer device
US10247312B2 (en) 2007-11-16 2019-04-02 Emd Millipore Corporation Fluid transfer device
US8690120B2 (en) 2007-11-16 2014-04-08 Emd Millipore Corporation Fluid transfer device
US9279100B2 (en) 2008-12-18 2016-03-08 Emd Millipore Corporation Device for the transfer of a medium
US9150825B2 (en) 2008-12-18 2015-10-06 Emd Millipore Corporation Device for the transfer of a medium
US20100158759A1 (en) * 2008-12-18 2010-06-24 Millipore Corporation Device For The Transfer Of A Medium
US8539988B2 (en) 2008-12-18 2013-09-24 Emd Millipore Corporation Device for the transfer of a medium
US20100154569A1 (en) * 2008-12-18 2010-06-24 Millipore Corporation Device For The Transfer Of A Medium
US9028779B2 (en) 2008-12-18 2015-05-12 Emd Millipore Corporation Device for the transfer of a medium
US9120585B2 (en) 2008-12-18 2015-09-01 Emd Millipore Corporation Device for the transfer of a medium
US9296983B2 (en) 2008-12-18 2016-03-29 Emd Millipore Corporation Device for the transfer of a medium
US8919365B2 (en) 2009-10-30 2014-12-30 Emd Millipore Corporation Fluid transfer device and system
US8544497B2 (en) 2009-10-30 2013-10-01 Emd Millipore Corporation Fluid transfer device and system
US8915264B2 (en) 2009-10-30 2014-12-23 Emd Millipore Corporation Fluid transfer device and system
DE102010060241A1 (de) * 2010-10-28 2012-05-03 Hecht Technologie Gmbh Probenehmer
DE102010060241B4 (de) * 2010-10-28 2015-09-10 Hecht Technologie Gmbh Probenehmer
CN107061793A (zh) * 2017-05-15 2017-08-18 西安石油大学 一种定值减压实时取样阀

Also Published As

Publication number Publication date
DE1924502B2 (ja) 1974-09-19
DE1924502C3 (de) 1975-05-22
GB1270025A (en) 1972-04-12
DE1924502A1 (de) 1969-12-18
FR1603352A (ja) 1971-04-13

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