US3831622A - Closure for sponge iron dispenser - Google Patents

Closure for sponge iron dispenser Download PDF

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Publication number
US3831622A
US3831622A US00333742A US33374273A US3831622A US 3831622 A US3831622 A US 3831622A US 00333742 A US00333742 A US 00333742A US 33374273 A US33374273 A US 33374273A US 3831622 A US3831622 A US 3831622A
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US
United States
Prior art keywords
arm
closure
flap
seat
shaft
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 - Lifetime
Application number
US00333742A
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English (en)
Inventor
R Grewer
H Hickmann
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.)
Thyssen Niederrhein AG
Original Assignee
Thyssen Niederrhein AG
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Filing date
Publication date
Application filed by Thyssen Niederrhein AG filed Critical Thyssen Niederrhein AG
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Publication of US3831622A publication Critical patent/US3831622A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/21—Arrangements of devices for discharging
    • 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
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/005—Circulation means for a separate heat transfer fluid
    • F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6579—Circulating fluid in heat exchange relationship

Definitions

  • a flap-type closure for a device for the feeding of sponge iron to a transport vessel comprises a substantially horizontal annular seat and a substantially horizontal pivot shaft connected to the flap by a swingab1e arm.
  • a pin between the arm and the flap allows relative swiveling motion of the flap with respect to the arm, and the flap is convex toward the seat to provide selfcentering positioning of the flap against the seat.
  • the present invention relates to a closure adapted to be interposed into the path of bulk material, especially sponge iron, between a source thereof and a receiver therefor and, more particularly, to a flap-type closure for a device for feeding or transferring sponge iron to a vessel for its further transport away from a directreduction furnace.
  • sponge iron i.e., the solid mass obtained by the direct reduction of iron ore (usually in the form of pellets or briquettes) in a shaft-type furnace with a reducing gas (generally containing hydrogen and carbon monoxide), a highly reactive product is obtained, which is transferred at the discharge side (bot tom) of the furnace to transport or storage vessels which may be sealed against the atmosphere to prevent reoxidation of the highly active iron during transport or storage.
  • a reducing gas generally containing hydrogen and carbon monoxide
  • Direct-reduction shaft furnaces may have two discharge openings through which the charge is removed from the furnace, the openings operating alternately in the cadence of operation of a reeiprocable device at the bottom of the furnace which carries the reduced iron to one side and another as part of the discharge movement.
  • the discharge openings may be provided with vertical shafts, inclined chutes or the like communicating with intermediate storage bins and respective funnels and, between these storage devices or transport vessels, flap-type closures may be provided.
  • the closures therefore, are said to lie between the outlets of the furnace and receptacles or vessels adapted to accommodate the sponge iron, either to store the latter until it canhe transported elsewhere or to receive the sponge iron for transport, e.g. by a wheeled or track vehicle system.
  • the flaptype closure In such devices, the flaptype closure must be adapted to withstand considerable thermal stress since the sponge iron generally has a temperature above 1000C. In spite of the rigorous conditions to which the closure is subjected, it must provide a tight and even hermetic seal to prevent access of air to the sponge iron until the transport vessel is aligned with the outlet, or the flap is to be opened for other reasons. Conventional closures have been incapable of withstanding such temperatures for long periods and, in fact, conventional flap-type closures have readily deteriorated under these conditions or have been incapable of maintaining the necessary gas-tight seal.
  • Another object of this invention is to provide a flaptype closure for the purposes described, which has a high useful life, does not deteriorate readily and is capable of providing a satisfactory seal for long periods without breakdown.
  • Still another object of the invention is to provide a flap-type closure with effective sealing properties, low cost and high stability under thermal stress.
  • a flap-type closure for a passage between a source of sponge iron and a receptacle therefor, which comprises a generally circular seat lying substantially in a horizontal plane and formed with a concave surface conforming generally to the configuration of a surface of revolution centered on the axis of the seat, a convex generally disk-shaped closure member of complementary configuration disposed below and engageable with the seat, the closure member having a convex configuration corresponding at least in the region engageable with the seat to a body of revolution centered on this axis, an arm carrying the closure member at an end thereof, a generally horizontal shaft supporting this arm for angular displacement thereof vabout the shaft axis and carrying the arm at the other end thereof, and at least one pin projecting perpendicularly to said arm and forming a swivel-type joint upon which the closure member is mounted at the first end of the arm.
  • the resulting structure allows substantially free movement of the closure member with at least two degrees of freedom relative to the pin and to the arm so that the closure member is selfcentering with respect to the seat. It has been found, most surprisingly, that such a closure structure is capable of withstanding temperatures of I,OOOC or more, as arise in the handling of sponge iron, and equally is capable of accommodating the distortions which arise from the development of such temperatures and correspondingly high temperature differential across the seat and/or the closure member.
  • the flap-type closure of the present invention although having generally applicability to any passage traversed by sponge iron and which in the absence of bulk transfer of this material must provide a hermetic seal to prevent entry of oxidizing gases to the passage, is preferably provided at the bottom of a pair of outlets or chutes disposed on opposite sides of a support table onwhich the column of sponge iron and furnace charge rests in a shaft-type furnace for the direct reduction of iron ore with reducing gases.
  • the bottom of the column may be entrained to one side and the other of the support table, alternately, thereby entraining a portion of the sponge iron to one outlet and the next portion of the sponge iron to another outlet, the chutes being formed with respective seats at the bottom thereof, as described previously.
  • the chutes may open into respective sponge bins or a common storage bin without intermediate exposure to the atmosphere and,.if the storage bins are permanently emplaced below the furnace outlets, the flap-type closure may be provided at an outlet of the bin or each bin, at the location at which it discharges into another receptacle, e.g. a transport vessel.
  • the essential elements of the present invention thus include a substantiallyhorizontal ring-shaped flap seat, a substantially horizontal angularly' displaceable shaft, a flap-carrying arm anchored at one end to this shaft and advantageously extending generally radially thrrefrom along a radius of the seat (in the closed position of the flap) and along a radius of the flap so that the arm is swingable in a radial plane of the shaft but an axial plane of the flap and its seat, and a convex disk or flap of circular outline pivotally mounted on a pin perpendicular to the arm at the free end thereof.
  • the convex flap and the flap seat have complementary surfaces corresponding to a surface of revolution centered on the common axis of the seat, the flap and the pin, when the flap is in its closed position, so that the flap may be considered to correspond to a spheroidal segment.
  • a flap-type closure of this character not only has been found to be capable of long-term use with a minimum downtime and repair, but also is capable of providing high sealing effectiveness between the seat and the flap.
  • the material from which the flap and the seat are constructed should be chosen to be capable of withstanding the high temperatures encountered by the closure and refractory steels, and tungsten or molybdenum alloys have been found to be most effective for the purposes of the present invention.
  • ceramic flap members may be used with refractory-metal rings and vice versa, both the ring (seat) and the flap may be composed of ceramic or ceramic-metal compositions (cermets) and these materials may be used with refractory-metal (tungsten and/or molybdenum alloys) reinforcement to constitute the arm of the flap.
  • the seating-ring is hollow and forms part of a coolant circulation path, the cooling being either water or a gas such as air or steam. Cooling can be effected, moreover, by introducing water into the seating ring and permitting the water to evaporate against atmospheric or higher pressure.
  • the flap is likewise made hollow and means is provided, e.g. in the arm carrying the flap, for conducting a coolant of the aforementioned type to an from the plate.
  • a coolant-carrying duct extends from the pivot shaft through the flap arm and to the flap, the flap arm serving as a coolant return path.
  • compensating connectors are provided between the flap arm and the closure member to enable the transfer of coolant between them.
  • the term compensating connectors is used herein to describe a connecting system for a fluid path which accommodates the relative motion of the flap and the arm described above.
  • the coolant channels of the pivot shaft, the arm and the flap are united in a common coolant circulation path.
  • FIG. 1 is a vertical section through a flap-closure embodying the present invention.
  • FIG. 2 is a section taken along the line II ll of FIG. 1.
  • the system 1 comprises a downwardly tapering funnel 3 through which the sponge iron mass 2 from a direct-reduction shaft-type furnace is adapted to cascade when a portion at the bottom of the column of charge is entrained into an opening communicating with the descending chute 3.
  • the latter is formed at the bottom with a horizontal flange 3a strengthened by radial ribs 3b and is mounted upon the top of a generally flat seating-ring structure represented generally at 5.
  • the latter member which has a cylindrical opening 5a registering with and coextensive with the opening of chute 3, terminates in a concave seating surface 10 conforming to a surface of revolution centered on the axis A of the ring.
  • the outer periphery of the ring-shaped member 5 is fluted at 5b to provide ribs 56 increasing the surface area in contact with the ambient atmosphere and therefore the heat-dissipation effectiveness of the ring 5.
  • the latter is .also formed with an annular channel 5d into which a coolant can be fed through a radial bore 5e, the coolant being led from the system by a radial bore 5;; at a location diametrically opposite the bore 5e.
  • Channel 5d can be connected in a coolant circuit with the flap, arm and shaft, as described hereinafter.
  • the ring 5 is mounted above a downwardly converging funnel-shaped structure 4 forming an intermediate bin for the sponge iron and communicating at its open ing at the bottom of the bin (not shown) with a transport vessel for the sponge iron.
  • the member 4 moreover, communicates with funnel-shaped structures or chutes, if required, to transfer the sponge iron to the transport vessel.
  • the closure arrangement further comprises a hollow shaft 6 having a horizontal axis B about which the shaft is pivotal and journaled in the housing formed by the structure 4.
  • the axis of the shaft lies at a distance D beneath the ring 5, the horizontal plane through this axis B corresponding to the position of the center of gravity of the flap-closure arrangement.
  • the shaft 6 is rotatable by any conventional means, not shown, e. g., an arm affixed to the shaft at a location remote from the system shown in FIGS. 1 and 2, and a fluid-responsive cylinder connected to this latter arm.
  • Shaft 6 carries a bent arm 7 which lies in a radial plane R of the shaft 6 but in an axial plane of the ring 5, the arm having a free end supporting a pin 8 which extends perpendicularly to the arm and to the shaft 6.
  • the upper end of pin 8 is formed with a ball 8a providing a swivel head for a socket 9a at the center of a closure disk 9.
  • the latter has a spheroidally convex annular surface 11 complementary to the surface of seat and also corresponds to a surface of revolution centered upon the axis A.
  • a plate 91) is bolted to the underside of disk 9 and has an aperture 9c surrounding the shank 8b of pin 8 to limit the swiveling motion of the closure member 9.
  • This opening 9c has a diameter less than the diameter of the ball-shaped head 8a so that the closure member cannot slip off the pin.
  • the ballshaped head 8a may be threaded onto the shank 8b after the plate 9b is placed thereover, whereupon the disk 9 is bolted to the plate and the structure illustrated in FIG. l is thereupon formed.
  • the plate 919 also closes a downwardly open annular recess 12 which forms a coolant channel within the do sure member 9, the channel communicating with diametrically opposite ports 12a and 12b opening in the axial direction along the plane R. These ports are connected by bellows fittings l4 (compensating connectors) to ports of the arm 7.
  • the arm 7 is provided with a conduit 13 which leads through the hollow shaft 6 with clearance and opens at the port 12b to deliver a coolant fluid to the interior of the closure member 9.
  • the coolant is returned via the port 12a directly to the hollow arm 7 (arrows 15) from which the fluid flows through the hollow shaft 6 around the conduit 113.
  • the structure 4 is provided with an antechamber 4a adapted to receive the arm 7 in the open position of the device, the arm being swingable through the angle 16 as represented in FIG. 1.
  • the bellows 14 allow swivel motion of the closure 9 on the the ball head 8a so that, when the device is closed, as shown in FIG. 1, member 9 is able to seat effectively against the ring 5 in spite of any distortion of the latter.
  • a flap-type closure for a generally vertical passage traversable by sponge iron at an elevated temperature comprising:
  • a pivot shaft having a generally horizontal axis and extending generally parallel to the plance of said seat and offset to a side thereof;
  • a closure member swivelably mounted on said pin and engageable with said seat in said position, said seat being formed with a concave sealing surface and said closure member being formed with a convex sealing surface engageable with said concave sealing surface, said surfaces conforming to surfaces of revolution, said closure member being formed with a cooling channel; a duct formed along said arm for feeding a cooling fluid to and removing cooling fluid from said channel; and
  • compensator connector means between said duct and said closure member for communicating between them while permitting at least limited swiveling movement of said closure: member.
  • closure defined in claim 3, further comprising a conduit extending through said shaft and said arm into communication with said channel at one location, said channel communicating with the interior of said arm and said shaft at another location.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Lift Valve (AREA)
  • Coating Apparatus (AREA)
  • Manufacture Of Iron (AREA)
  • Mechanically-Actuated Valves (AREA)
US00333742A 1972-02-24 1973-02-20 Closure for sponge iron dispenser Expired - Lifetime US3831622A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2208774A DE2208774C3 (de) 1972-02-24 1972-02-24 Klappenverschluß an Abfülleinrichtungen für Eisenschwamm

Publications (1)

Publication Number Publication Date
US3831622A true US3831622A (en) 1974-08-27

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US00333742A Expired - Lifetime US3831622A (en) 1972-02-24 1973-02-20 Closure for sponge iron dispenser

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US (1) US3831622A (US06650917-20031118-M00005.png)
JP (1) JPS5219801B2 (US06650917-20031118-M00005.png)
AR (1) AR198968A1 (US06650917-20031118-M00005.png)
AT (1) AT330222B (US06650917-20031118-M00005.png)
BE (1) BE795182A (US06650917-20031118-M00005.png)
BR (1) BR7301362D0 (US06650917-20031118-M00005.png)
CA (1) CA988294A (US06650917-20031118-M00005.png)
CH (1) CH546386A (US06650917-20031118-M00005.png)
DE (1) DE2208774C3 (US06650917-20031118-M00005.png)
ES (1) ES411711A1 (US06650917-20031118-M00005.png)
FR (1) FR2173241B1 (US06650917-20031118-M00005.png)
GB (1) GB1383163A (US06650917-20031118-M00005.png)
IL (1) IL41498A (US06650917-20031118-M00005.png)
IT (1) IT979406B (US06650917-20031118-M00005.png)
LU (1) LU67090A1 (US06650917-20031118-M00005.png)
NL (1) NL150209B (US06650917-20031118-M00005.png)
NO (1) NO134010C (US06650917-20031118-M00005.png)
SE (1) SE378033B (US06650917-20031118-M00005.png)
ZA (1) ZA731237B (US06650917-20031118-M00005.png)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033549A (en) * 1973-12-28 1977-07-05 Claudius Peters Ag Valve system for protection of the valve from abrasion
US4144902A (en) * 1975-11-11 1979-03-20 S.A. Des Anciens Etablissements Paul Wurth Isolation valve
US4248403A (en) * 1979-01-08 1981-02-03 Leslie, Co. Plug assembly for movable plug valves
WO1985003915A1 (en) * 1984-02-27 1985-09-12 Loevinger Richard P Heated outlet valve for railway tank car
US5305985A (en) * 1993-04-30 1994-04-26 Ethyl Corporation Valve
US6116267A (en) * 1997-10-20 2000-09-12 Ebara Corporation Valving device
US6260490B1 (en) * 2000-02-16 2001-07-17 Sure Alloy Steel Corporation Burner isolation valve for pulverized fuel systems
US6668858B1 (en) * 2002-10-29 2003-12-30 Pentair Pool Products, Inc. Check valve
EP1404290A1 (en) * 2001-06-06 2004-04-07 NL Technologies, Ltd. Thermally insulating interfaces
US20050263732A1 (en) * 2004-05-27 2005-12-01 Joe Kurian Valve assembly having a compensating gate
US20100146954A1 (en) * 2008-12-12 2010-06-17 Wescast Industries, Inc. Liquid-Cooled Exhaust Valve Assembly
US20110140023A1 (en) * 2009-12-15 2011-06-16 Applied Materials, Inc. Water cooled valve
CN103486279A (zh) * 2013-09-06 2014-01-01 济南澳海炭素有限公司 炭素罐式煅烧炉排料阀
CN103727308A (zh) * 2013-11-25 2014-04-16 青岛盛嘉信息科技有限公司 一种数字控制电热水器
CN104697176A (zh) * 2013-12-04 2015-06-10 青岛润鑫伟业科贸有限公司 一种数字控制电热水器水温的方法
US20170342853A1 (en) * 2016-05-19 2017-11-30 Hamilton Sundstrand Corporation In-line shutoff valves
US20180163898A1 (en) * 2016-12-14 2018-06-14 Fisher Controls International Llc Single-piece valve closure members having integral flow paths formed via additive manufacturing
US10190498B1 (en) * 2015-07-24 2019-01-29 Jansen's Aircraft Systems Controls, Inc. Valve with valve member cooling
EP3569901A1 (de) * 2018-05-15 2019-11-20 Evoguard GmbH Ventilkombination
US11085546B2 (en) 2018-04-10 2021-08-10 Fisher Controls International Llc Purge apparatus for use with fluid valves
US20220381205A1 (en) * 2021-05-25 2022-12-01 Faurecia Emissions Control Technologies, Usa, Llc Valve assembly for vehicle exhaust system

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LU77487A1 (US06650917-20031118-M00005.png) * 1977-06-06 1977-09-22
DE3023253C2 (de) * 1980-06-21 1985-02-21 Mannesmann AG, 4000 Düsseldorf Schachtofen für die Erschmelzung von Metallen
LU83402A1 (de) * 1981-06-02 1983-04-06 Wurth Paul Sa Schleusenaustragsystem fuer industrieoefen
JPS63228002A (ja) * 1987-03-09 1988-09-22 Anzen Jidosha Kk 車両のアライメント測定方法及び装置
LU90308B1 (fr) * 1998-10-30 2000-07-19 Wurth Paul Sa Clapet de retenue de mati-re pour une tr-mie d'alimentation
LU90452B1 (fr) * 1999-09-27 2001-03-28 Wurth Paul Sa Dispositif d'-tanch-it-
CN107387781B (zh) * 2017-08-15 2023-05-09 洛阳沃达节能科技有限公司 合金加热炉翻板阀密封机构

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US2599334A (en) * 1947-07-26 1952-06-03 Republic Steel Corp Seal for blast furnace hoppers and bells
US3030977A (en) * 1960-01-27 1962-04-24 Inland Steel Co Valve structure
US3139472A (en) * 1961-05-05 1964-06-30 Inland Steel Co Charging apparatus for blast furnace with high top pressure

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US2215872A (en) * 1937-08-27 1940-09-24 Freyn Engineering Co Blast furnace construction
DE1943961A1 (de) * 1969-08-29 1971-03-11 Demag Ag Gichtverschluss fuer im Hochdruckverfahren betreibbare Schachtoefen,insbesondere fuer Druck-Hochoefen

Patent Citations (3)

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US2599334A (en) * 1947-07-26 1952-06-03 Republic Steel Corp Seal for blast furnace hoppers and bells
US3030977A (en) * 1960-01-27 1962-04-24 Inland Steel Co Valve structure
US3139472A (en) * 1961-05-05 1964-06-30 Inland Steel Co Charging apparatus for blast furnace with high top pressure

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033549A (en) * 1973-12-28 1977-07-05 Claudius Peters Ag Valve system for protection of the valve from abrasion
US4144902A (en) * 1975-11-11 1979-03-20 S.A. Des Anciens Etablissements Paul Wurth Isolation valve
US4248403A (en) * 1979-01-08 1981-02-03 Leslie, Co. Plug assembly for movable plug valves
WO1985003915A1 (en) * 1984-02-27 1985-09-12 Loevinger Richard P Heated outlet valve for railway tank car
US4624189A (en) * 1984-02-27 1986-11-25 Loevinger Richard P Heated outlet valve for railway tank car
US5305985A (en) * 1993-04-30 1994-04-26 Ethyl Corporation Valve
US6116267A (en) * 1997-10-20 2000-09-12 Ebara Corporation Valving device
US6260490B1 (en) * 2000-02-16 2001-07-17 Sure Alloy Steel Corporation Burner isolation valve for pulverized fuel systems
EP1404290A4 (en) * 2001-06-06 2007-03-21 Nl Technologies Ltd HEAT-INSULATING INTERFACES
EP1404290A1 (en) * 2001-06-06 2004-04-07 NL Technologies, Ltd. Thermally insulating interfaces
US20060157113A1 (en) * 2001-06-06 2006-07-20 Newberg Douglas A Thermally insulating interfaces
US6668858B1 (en) * 2002-10-29 2003-12-30 Pentair Pool Products, Inc. Check valve
US20050263732A1 (en) * 2004-05-27 2005-12-01 Joe Kurian Valve assembly having a compensating gate
US7086416B2 (en) * 2004-05-27 2006-08-08 Zimmerman & Jansen, Inc. Valve assembly having a compensating gate
US20060283513A1 (en) * 2004-05-27 2006-12-21 Joe Kurian Valve assembly having a compensating gate
US20100146954A1 (en) * 2008-12-12 2010-06-17 Wescast Industries, Inc. Liquid-Cooled Exhaust Valve Assembly
US8443593B2 (en) * 2008-12-12 2013-05-21 Westcast Industries, Inc. Liquid-cooled exhaust valve assembly
US20110140023A1 (en) * 2009-12-15 2011-06-16 Applied Materials, Inc. Water cooled valve
EP2336611A1 (en) * 2009-12-15 2011-06-22 Applied Materials, Inc. Water cooled valve
CN103486279A (zh) * 2013-09-06 2014-01-01 济南澳海炭素有限公司 炭素罐式煅烧炉排料阀
CN103727308A (zh) * 2013-11-25 2014-04-16 青岛盛嘉信息科技有限公司 一种数字控制电热水器
CN104697176A (zh) * 2013-12-04 2015-06-10 青岛润鑫伟业科贸有限公司 一种数字控制电热水器水温的方法
US10190498B1 (en) * 2015-07-24 2019-01-29 Jansen's Aircraft Systems Controls, Inc. Valve with valve member cooling
US20170342853A1 (en) * 2016-05-19 2017-11-30 Hamilton Sundstrand Corporation In-line shutoff valves
US10001026B2 (en) * 2016-05-19 2018-06-19 Hamilton Sunstrand Corporation In-line shutoff valves
US20180163898A1 (en) * 2016-12-14 2018-06-14 Fisher Controls International Llc Single-piece valve closure members having integral flow paths formed via additive manufacturing
US10107417B2 (en) * 2016-12-14 2018-10-23 Fisher Controls International Llc Single-piece valve closure members having integral flow paths formed via additive manufacturing
US11085546B2 (en) 2018-04-10 2021-08-10 Fisher Controls International Llc Purge apparatus for use with fluid valves
EP3569901A1 (de) * 2018-05-15 2019-11-20 Evoguard GmbH Ventilkombination
US20220381205A1 (en) * 2021-05-25 2022-12-01 Faurecia Emissions Control Technologies, Usa, Llc Valve assembly for vehicle exhaust system

Also Published As

Publication number Publication date
DE2208774A1 (de) 1973-09-13
FR2173241B1 (US06650917-20031118-M00005.png) 1976-05-14
SE378033B (US06650917-20031118-M00005.png) 1975-08-11
NO134010B (US06650917-20031118-M00005.png) 1976-04-26
ES411711A1 (es) 1976-03-16
JPS5219801B2 (US06650917-20031118-M00005.png) 1977-05-31
BE795182A (fr) 1973-05-29
IL41498A0 (en) 1973-04-30
GB1383163A (en) 1975-02-05
ATA119873A (de) 1975-09-15
AT330222B (de) 1976-06-25
AR198968A1 (es) 1974-07-31
FR2173241A1 (US06650917-20031118-M00005.png) 1973-10-05
DE2208774B2 (de) 1973-12-06
IT979406B (it) 1974-09-30
NL150209B (nl) 1976-07-15
CH546386A (de) 1974-02-28
BR7301362D0 (pt) 1974-05-16
AU5249573A (en) 1974-08-22
NL7302599A (US06650917-20031118-M00005.png) 1973-08-28
ZA731237B (en) 1974-02-27
DE2208774C3 (de) 1974-07-04
CA988294A (en) 1976-05-04
LU67090A1 (US06650917-20031118-M00005.png) 1973-05-03
JPS4899019A (US06650917-20031118-M00005.png) 1973-12-15
IL41498A (en) 1975-12-31
NO134010C (US06650917-20031118-M00005.png) 1976-08-04

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