US3559685A - Multi-way-valve - Google Patents

Multi-way-valve Download PDF

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Publication number
US3559685A
US3559685A US834850A US3559685DA US3559685A US 3559685 A US3559685 A US 3559685A US 834850 A US834850 A US 834850A US 3559685D A US3559685D A US 3559685DA US 3559685 A US3559685 A US 3559685A
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Prior art keywords
slide
pressure
casing
set forth
medium
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Expired - Lifetime
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US834850A
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English (en)
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Jan Richard Peter Defries
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    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/12—Special measures for increasing the sensitivity of the system
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated

Definitions

  • the invention refers to a multiway valve and more particularly to a multiway valve which has a control member with the aid of which the line leading to a consuming point, for example.
  • a working cylinder for liquid or gaseous media can be connected selectively with the supply line for the pressure medium or with a relief line leading to the free atmosphere or to a reservoir SUMMARY OF THE INVENTION
  • the construction of the new multiway valve is such that, before starting the control movement, the slide is lifted from the contact faces allotted thereto for sealing contact by changing the distribution of the pressure, that further the control member is driven exclusively by fluid pressure for performing its control movement in the course of which movement it is brought or moved into a new valving position, whilst being in a state of suspension and floating soto-say between two layers of the medium, and that, finally, the control member upon reaching its new valving position is again pressed against the contact faces allotted thereto by again changing the pressure distribution and this time conveniently in the opposite sense
  • the arrangement can, for instance, be such that the control member is constructed as a slide which is displaced during the control movement in the manner of a flat slide transverse to the channels to be controlled and fitting snugly in the respective valving positions under the influence of the pressure, for example, of the medium to be controlled with the walls surrounding the channels in order to perform a sealing effect, said slide standing in its slide case on one of its flat sides under the influence of the pressure medium coming from the supply line which influence is directed transversely to the direction of the displacing movement, and on the opposite flat side and on its front sides coordinated to its two axial ends under the influence of a pressure medium cushion which in its operative position sealingly presses the slide in its respective valving position against the face portions of the inner face of theslide case surround the lines to be connected with one another, and the effect of which pressure medium cushion can be temporarily and partly neutralized and annulled by short-time changes of the pressure on one of its front sides coordinated to the axial ends in such a manner that the slide lifts from the inner face of the slide case
  • control member is lifted from the contact faces by a change in the pressure distribution before the control movement begins, whereby it floats so-to-say or is suspended between two layers of the medium and when in this state can glide thus into a new position, whereafter a change in the pressure distribution follows and the control member is sealingly pressed again against the contact surfaces, No friction takes place during the control movement, after the end of the movement the slide is pressed against the surface by the pressure of the medium so that a good sealing against leakage is secured.
  • the cushion consisting of the medium surrounding the slide prevents any direct contact between material and material so that practically there is no friction and almost no wear; if. however, wear occurs, the control member is automatically adjusted and maintains its sealing effect.
  • the equal pressures of the liquid on both functional sides of the slide have the effect that the slide will float like an air cushioned vehicle, that state of floating or suspension being maintained by a steady and unsubstantial flow of the pressure medium and by the regulation of the cross sections of the throttle due to the variations in the distance.
  • the slide In this state of floating or suspension the slide is free from strong fraction, which, however. may occasionally appear with secondary guiding surfaces of the slide only
  • the construction is as uncomplicated as it can be with slide valves. The result therefore is that the device presented by the invention combines the advantage of a disc valve, namely that the control member performs its scaling function only when the control position is completely reached, with the advantages of the slide valve, the simple and reliable construction of the slide that moves across the channels to be controlled.
  • FIG. 1 shows an embodiment of the invention in a vertically sectioned schematical side view, wherein this embodiment is shown in a first stage of the control operation
  • FIG. 2a shows the arrangement according to FIG. 1 in a second stage of the control operation
  • FIG. 2b shows the arrangement according to FIG 1 in a third stage of the control operation
  • FIG. 3 shows the arrangement according to FIG. 1 in a fourth stage of the control operation
  • FIG. 4 shows a modified embodiment of the invention in a side view in a vertical section in a schematical representation corresponding to that of FIG. 3,
  • FIG. 5 shows the slide of another variation of the device according to the invention in a perspective view as seen from above
  • FIG. 6 shows another modified embodiment of the invention in a schematical side view and in a vertical section
  • FIG. 7 shows a schematical representation of a fifth embodiment of the invention in a plan view
  • FIG. 8 shows the slide of the embodiment according to FIG. 7 as viewed from above.
  • the embodiment of the device according to the invention and shown in the drawings is a four-way valve.
  • This valve has a control member 1 by means of which the feeding line leading to a consumer, for instance, to a working cylinder, can be connected at will either with the supply line supplying the pressure mediumcompressed air for instance--or with a relief line leading to a reservoir or into the open air.
  • the control member 1 has the form of a flat slide which can be moved within the slide casing to and fro according to the arrow 3 in the direction of its longitudinal axis between its two valving positions.
  • the slide is adapted and guided within the space 4 of the'slide case which has a rectangular cross section.
  • the effect of the said cushion can thereby be temporarily and partly neutralized and annulled by changing for a short time the pressure at one of its front sides coordinated to its axial ends so that the flat slide is lifted from the inside of the case wall in order to glide into that valving position coordinated to that side, on which the change of pressure has taken place, until the full working or operating condition of the cushion of pressure medium has been restored.
  • the space or cavity 4 is higher than the slide 6, its axial length is greater than that of the slide by such an amount that the slide is able to move between its different valving positions within the case.
  • the following lines or connections on the front sides 9 and 10 the lines 11 and 12. by means of which the pressure within the space or cavity of the slide case can be changed; on the lower side 5 the supply line 6 for the pressure medium, the connections 13 and 14 to the two sides of the cylinder and the connections l5 and 16 for the relief lines coordinated to the two sides of the cylinder.
  • connection for a supply line 13 and 14 leading to a working cylinder is provided-as seen in direction of the longitudinal axis of the slide (according to arrow 3)-between the supply line 6 for the pressure medium and the connection for the relief line 15 or 16 coordinated with the working cylinder.
  • the lines 11 and 12 are coaxial to one another.
  • the inside surfaces of the front walls limiting the space or cavity of the slide case at its two axial ends are provided with padlike abutment cushions l7 and 18 which are made of elastic resilient material, for instance of rubber or synthetic material with rubberlike qualities, and which abutment cushions serve to prevent the slide from abutting too intensively at the end of the shifting movement.
  • the slide has the shape of a longish and flat body which has a rectangular cross section and which has in the region of its two axial ends the sealing projections 19, 20 on its side 5 facing the opening of the supply line for the pressure medium and 21, 22 on the opposite side whereby both pairs of projections 19, 20 and 21, 22 project rectangularly from their surface in outward direction and have rectangular cross sections.
  • the effective surface lying between the sealing projections 19, 20 on the side 5 is smaller than the effective surface lying between the sealing projections 21, 22.
  • the arrangement is such that the slide sealingly rests in both its valving positions on the corresponding inside of the slide case on the side facing the supply line for pressure medium and is separated during its axial displacement from the inner sides of the slide case facing its two flat sides by means of pressure cushions produced by the pressure medium.
  • the distribution of the pressure coming from the supply line for pressure medium by means of a layer of medium on the opposite sides of the control member directed in the opposite direction to the above mentioned pressure, and by making the resulting force greater than the forces produced by the pressure air coming from the supply line at least by the sealing pressure.
  • FIG. 1 of the drawings there is shown the valving position of the slide in which the supply line 6 for the pressure medium is connected with the supply line 13 feeding the one side of the cylinder, whereas the supply line feeding the other side of the cylinder is in connection with the relief line 16.
  • the sealing projections 19 and 20 bear against the corresponding surface of the slide sealing thereby the different lines and connections in the outward direction.
  • the surface 23 of the slide case can be fitted out with a layer 30 consisting of synthetics or rubber,
  • the slide and the surface of the slide case facing it may also be equipped with fine teeth or notches by means of which the slide is released for a lateral movement only after having performed a certain motion corresponding to the depth of the teeth or notches, but which otherwise blocks or prevents any displacement of the slide.
  • the slide is pressed down until it comes to sit on the surface 29 so as to fulfill an effective sealing action.
  • the supply line 6 is connected with the supply line that feeds the other side 14 of the cylinder; at that moment the supply line 13 for feeding the one side of the cylinder is connected with the relief line 15 coordinated to it.
  • the invention can also be applied to a three-way valve.
  • the slide can, moreover, be combined with a greater number of connecting channels and must then have a correspondingly greater number of control and intermediate positions, whereby the different connecting channels can be combined with each other ad libitum by interrupting the condition of suspension of the slide.
  • the arrangement can be such that the slide automatically neutralizes and annuls in the end positions of its movement the relief of the pressure cushion due to its geometrical position in a control point provided in the channel of the valve that has to relieve the pressure cushion, so that it is again pressed against the coordinated surface, whereby the energy necessary for passing through this control point may be taken from a mechanical, hydraulical or pneumatical accumulator.
  • the slide can thereby be so designed that it can be brought into a great number of intermediate positions also with a greater number of connecting channels which may be functionally connected by the connections on the side of the slide whenever the state of suspense is interrupted at the desired point.
  • the slide in its state of suspension be freely movable as a plate in its plane and effectuate connections between different channels under the influence of the above-mentioned controlling operations, for instance in the form of a crossbar selection system.
  • the slide has no preferential position dependent on, and due to, gravitation, it being designed for instance, as a round plate that changes its position by a rotary movement and/or as a system in which the masses are balanced.
  • the slide in its suspended state may be brought into a new position by inductive electric fields as is the case with the rotor of a motor, in particular as the movable part of a linear motor, or that it can be displaced by mechanical exterior means which work by means of a magnetic power gradient through a wall impermeable for liquids, whereby conveniently the slide yields to the actuating exterior powers which produce the power gradient only when the contact with the channel face is interrupted by the relief of the pressure space, in that sense that only the coincidence of both states brings about a control operation.
  • the slide case or the slide are so constructed that energy fields in the form of fields of spring tensions or of magnetic energies must be overcome for starting a changing in position, and this with the intention hereby to maintain the position even in the case that due to an interruption of the pressure supply the slide no longer bears against the surfaces allotted thereto
  • the arrangement may be also such that the slide case or the slide are provided with a little auxiliary piston which is displaceable under the influence of the supply pressure and against the action of the spring tension and which serves to hold the slide, upon the supply pressure sinking under'a predetermined level, in the position given be fore the diminishing of the pressure.
  • FIG. 4 shows an arrangement in which the relief lines 35 and 36 supplying the pressure medium serving to produce the control movement to the control spaces 37 and 38 of the slide case in the zone of the two axial ends of the slide 39 open into the slide case on the same side as the supply line 40 containing the control medium
  • This arrangement allows the slide to be controlled via the relief lines 35 and 36, whereby the operations of lifting or sinking down of the slide take place automatically because near the end positions to the left and right the slide closes automatically the respective relief line.
  • the pressure supplies 41 and 42 allow the slide to fully perform its movement even after the relief channels have been closed.
  • the slide is constructed according to FIG. 5.
  • the slide has the shape of a longish prismatic body with a rectangular cross section and with two spaces or grooves 44 and 45 on the side of the slide turned away from the channels to be connected with each other, said spaces or grooves 44 and 45 serving to receive the cushions of the pressure medium and being separated from one another whereby they are open towards the top side.
  • These spaces or grooves 44, 45 extending in the longitudinal direction of the slide are connected with the supply line for the pressure medium by means of corresponding and suitable channels 46 and 47.
  • For controlling the slide to these spaces or grooves there are allotted or coordinated relief channels extending in the longitudinal direction of the slide.
  • the relief channel 48 is provided in the middle zone of the slide and between the two spaces 44 and 45; it extends in the longitudinal direction of the slide and is open towards the one of the axial ends at 48a.
  • Two further relief channels 49 and 50 enclose the two spaces 44 and 45 between them and are open towards the other axial end of the slide at 49a and 500.
  • the channels for the incoming streams 51, 52a, 52b, 53a, 53b have the shape of shells, the curvature of which becomes steadily wider and wider up to the vortex, whereby the ratio of the inside diameters x, y of the channels coordinated to one another is approximately 1,0 1,2 and whereby there is a whirl or vortex forming at the point 54.
  • the slide can also have the form of a disclike or platelike body 56 rotatable about a central axis 55 and provided on its side turned away from the openings of the channels for the incoming medium with two spaces or grooves 57, 58 to receive the pressure medium which are connected with the supply line for the pressure medium via the throttling channels 57a, 58a.
  • the spaces or grooves On the opposite flat side of the slide there are provided the spaces or grooves having, for instance, a shell-like shape which serve to furnish the connections between the channels for the incoming medium.
  • 59 designates a member rigid with the slide that is under the influence of the control pressure which is introduced into the control spaces 60 and 61 to produce the control movement.
  • 62a and 62b indicate the supply lines that bring the compressed medium to the diverse consuming points.
  • 63a and 63b represent the relief lines coordinated to the said consuming points, whereas 64 is the supply line for feeding the pressure medium.
  • the shell like connecting channels within the slide are indicated at 65, 66, 67; 68 is a counterbalance pocket within the slide. All this taken together gives a compact construction well balanced with respect to the weights and to the pressures.
  • a multiway valve for control of a pressure medium which has a casing with an inlet and at least two outlets and a control member able to perform a control movement with the aid of which the inlet can be connected selectively with said outlets, said outlets being adapted for connection to a supply line for the pressure medium and with a relief line respectively, wherein means are provided to change the pressure on the control member before starting the control movement whereby the control member is lifted from the contact faces of the casing allotted thereto for sealing contact, wherein fluid pressure means are provided to act on the control member for performing its control movement in the course of which movement it is moved into a new valving position while being in a state of suspension by the medium and wherein the control member upon reaching its new valving position is again pressed against the contact face allotted thereto by again changing the pressure distribution.
  • control member is a flat slide displaceable during the control movement across the inlet and outlets and fitting snugly in the respective valving positions under the influence of the pres sure within the casing to perform a sealing effect, said slide standing in its slide case on its one flat side under the influence of the pressure medium coming from the inlet which influence is directed across the direction of the displacing movement, and on the opposite flat side and on its two axial ends under the influence of a pressure medium cushion which in its operative condition sealing presses the slide in its respective valving position against the face portions of the inner face of the casing surrounding the inlet and outlet, and means to change the pressure acting on the ends, whereby the effect of the pressure medium cushion can be neutralized and annulled partly and temporarily, whereby the slide lifts from the inner face of the casing until the full working state of the pressure medium cushion has been restored, and displaces into the valving position coordinated to the side on which the change of pressure has taking place so that the slide is displaceable within the cas
  • valve casing has openings on one side thereof constituting the inlet and outlets
  • control member comprises at least one slide movable within the said casing and having slide channels on one side which interconnect said openings in said casing in different ways in dependence on their relative position with respect to the said openings and at least one auxiliary valve
  • said slide is mounted within said casing with a clearance in a direction perpendicular to the direction of control movement and in a direction towards the side containing the said openings
  • said fluid pressure means comprising a supply channel connecting the said clearance to a reservoir of medium the pressure of which within the casing is high enough for sealingly pressing the slide onto the side of the casing containing the said openings against the action of the pressure in the inlet and in the slide channels
  • auxiliary valve means are connected to the said clearance, said auxiliary valve means on being opened establishing a connection to a medium the pressure of which within the clearance is not high enough to press the slide sealingly onto the side wall of the
  • control member in its state of suspension is freely movable as a plate in its plane and establishes connections between the channels under the influence of controlling adjusting operations along several coordinates.
  • the pressure chamber serving to provide the sealing effect is constituted by a fluid pressure cushion, wherein between the throttling means and the chambers serving for the discharge of the medium out from the pressure chamber there is arranged a further throttle the cross section of which is reduced by releasing the sealing contact between the said slide and the said faces allotted thereto, the pressure cushion being situated on one side of the said slide and integral therewith, and being movable with the said slide.
  • a said flat slide constitutes the control member and is guided within a groove of rectangular cross section of said casing, the height of which groove is slightly greater than that of the slide and the axial length of which groove is greater than that of the slide by such an amount that the slide is able to execute its movement between its different valving positions within the casing, wherein into the groove of the casing there open lines on the two front sides corresponding to the axial ends of the slide by means of which can be changed the pressure in the groove of the said casing, and on one of the flat sides of the flat slide, the inlet line and the outlet lines.
  • control member comprises a slide in the shape of a longish flat body with rectangular cross section which has in the zone of its two axial ends on the side facing the opening of the inlet as well as on the side opposite thereto sealing projections directed rectangularly in outward direction, wherein the effective surface contained between the sealing projections on the side facing the supply line for the pressure'medium is smaller than the effective surface on the side opposite thereto.
  • the said slide has the shape of a longish prismatic body with rectangular cross section which has on its side turned away from the channels to be interconnected two separated grooves serving to receive pressure cushions and extending in the longitudinal direction of the slide and being in connection with the inlet through channels and being open on their top, to which grooves there are coordinated relief channels extending in the longitudinal direction of the slide and serving to control said slide, of which relief channels one is provided in the middle region of the slide between the two grooves and is open in a direction towards one axial end thereof, whereas two further relief channels contain the two grooves between them and are open in the direction towards the other axial end of the slide.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Multiple-Way Valves (AREA)
  • Sliding Valves (AREA)
  • Taps Or Cocks (AREA)
US834850A 1968-06-20 1969-06-19 Multi-way-valve Expired - Lifetime US3559685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1750933A DE1750933C3 (de) 1968-06-20 1968-06-20 Mehrwegeventil mit Mitteln zur reibungsfreien Verstellung des Ventil verschlußteils

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US3559685A true US3559685A (en) 1971-02-02

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US834850A Expired - Lifetime US3559685A (en) 1968-06-20 1969-06-19 Multi-way-valve

Country Status (7)

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US (1) US3559685A (de)
BE (1) BE753848Q (de)
CH (1) CH492911A (de)
DE (1) DE1750933C3 (de)
FR (1) FR2011280A1 (de)
GB (1) GB1273762A (de)
SE (1) SE351020B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875967A (en) * 1970-08-20 1975-04-08 Festo Maschf Stoll G Multiple-way valve
US4136853A (en) * 1975-02-24 1979-01-30 Atlas Copco Aktiebolag Slide valve
NL1011177C2 (nl) * 1999-01-29 2000-08-01 Sara Lee De Nv Keramische klep.
WO2011121200A1 (fr) * 2010-04-02 2011-10-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif de distribution de gaz et installation comportant un tel dispositif
CN108374811A (zh) * 2018-05-02 2018-08-07 宁波真格液压科技有限公司 一种具有卸荷功能的油路分配阀
WO2018207609A1 (ja) * 2017-05-09 2018-11-15 日本電産サンキョー株式会社 バルブ装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833121A (en) * 1971-09-02 1974-09-03 Brunswick Corp Plastic filtration systems
DE3124313A1 (de) * 1981-06-20 1983-01-13 Menzel Gmbh & Co, 7000 Stuttgart Verfahren und vorrichtung zur einwirkung auf in einer vorzugsweise waessrigen fluessigkeit befindlichen stoffen
GB8326702D0 (en) * 1983-10-06 1983-11-09 Brisland M J Slide valve
FR2571094B1 (fr) * 1984-10-02 1988-12-02 Maire Charles Ets Perfectionnements aux outils pneumatiques de vissage.
GB8915403D0 (en) * 1989-07-05 1989-08-23 Keraflo Ltd Valve
GB2310914A (en) * 1996-03-05 1997-09-10 Lucas Ind Plc Distributor arrangement
GB0125084D0 (en) 2001-10-19 2001-12-12 Oxford Magnet Tech Rotary valve

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875967A (en) * 1970-08-20 1975-04-08 Festo Maschf Stoll G Multiple-way valve
US4136853A (en) * 1975-02-24 1979-01-30 Atlas Copco Aktiebolag Slide valve
NL1011177C2 (nl) * 1999-01-29 2000-08-01 Sara Lee De Nv Keramische klep.
WO2000045073A1 (en) * 1999-01-29 2000-08-03 Sara Lee/De N.V. Ceramic valve
US6682047B1 (en) 1999-01-29 2004-01-27 Sara Lee/De N.V. Ceramic valve
FR2958368A1 (fr) * 2010-04-02 2011-10-07 Air Liquide Dispositif de distribution de gaz et installation comportant un tel dispositif
WO2011121200A1 (fr) * 2010-04-02 2011-10-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif de distribution de gaz et installation comportant un tel dispositif
CN102822578A (zh) * 2010-04-02 2012-12-12 乔治洛德方法研究和开发液化空气有限公司 气体分配装置和包括这种装置的设备
CN102822578B (zh) * 2010-04-02 2014-07-16 乔治洛德方法研究和开发液化空气有限公司 气体分配装置和包括这种装置的设备
US8931502B2 (en) 2010-04-02 2015-01-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas-dispensing device and facility comprising such a device
WO2018207609A1 (ja) * 2017-05-09 2018-11-15 日本電産サンキョー株式会社 バルブ装置
US11143330B2 (en) 2017-05-09 2021-10-12 Nidec Sankyo Corporation Valve device
CN108374811A (zh) * 2018-05-02 2018-08-07 宁波真格液压科技有限公司 一种具有卸荷功能的油路分配阀
CN108374811B (zh) * 2018-05-02 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 一种具有卸荷功能的油路分配阀

Also Published As

Publication number Publication date
FR2011280A1 (de) 1970-02-27
BE753848Q (fr) 1970-12-31
SE351020B (de) 1972-11-13
DE1750933B2 (de) 1973-04-12
DE1750933A1 (de) 1971-09-23
CH492911A (de) 1970-06-30
GB1273762A (en) 1972-05-10
DE1750933C3 (de) 1973-10-31

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