Class / Patent application number | Description | Number of patent applications / Date published |
251333000 | Particular head and seat cooperation | 59 |
20080230733 | Automatic suction and pressure valve - In order to reduce the wear at the spring ends of the valve spring arranged in a spring cup to the greatest possible extent and to increase the lifetime, in particular of the valve springs, the invention proposes to form the internal contour | 09-25-2008 |
20080290312 | Fluid control valve - A fluid control valve comprises a diaphragm formed of a plurality of circular thin metal plates laminated one on another, the diaphragm being placed to be movable into or out of contact with a valve seat for closing and opening the valve. Each thin metal plate has a warp in a predetermined direction due to rolling anisotropy, and the thin metal plates are laminated with the directions of respective warps coinciding with one another in such a manner that variations in lift amount of the diaphragm are decreased. | 11-27-2008 |
20090008592 | FUEL INJECTION VALVE - The invention relates to a fuel injection valve for fuel injection systems of self-igniting air-compression internal combustion engines. The fuel injection valve comprises an actuator, housed in a valve chamber, and a valve closing element that is actuated by the actuator by means of a valve needle. The valve closing element interacts with a valve face to give a sealing seat. The valve also comprises a transition piece that is attached to the actuator, and an expandable hose encompasses the periphery of the actuator and a part of the transition piece. The expandable hose is connected to the transition piece in an area of fastening. | 01-08-2009 |
20090101858 | VALVE WITH ELASTICALLY DEFORMABLE COMPONENT - A valve including an elastically deformable component is disclosed, wherein the elastically deformable component is disposed in one of a valve head and a valve body, and wherein the elastically deformable component is elastically deformed when the valve is in a closed position to facilitate a substantially fluid tight seal between the valve head and the valve body. | 04-23-2009 |
20090101859 | STEAM VALVE AND GENERATOR SET - A steam valve | 04-23-2009 |
20090134352 | VALVE FOR CONTROLLING THE FLOW OF FLUID BETWEEN AN INTERIOR REGION OF THE VALVE AND AN EXTERIOR REGION OF THE VALVE - Embodiments of the invention are directed to a valve. In one embodiment, the valve includes a body having a first biasing member and a sealing member configured to axially move inside the body against the first biasing member to provide a path for fluid to flow from an interior region of the body to an exterior region of the body at a first predetermined pressure difference across the sealing member. | 05-28-2009 |
20090146096 | APPARATUS AND METHODS TO ALIGN A CLOSURE MEMBER AND A VALVE STEM - Apparatus to align a closure member and valve stem for use with valves are described. An example valve includes a stem and a closure member having a first aperture to receive at least a portion of the stem. The example valve further includes a positioning member that has a first portion and a second portion. The first portion has a first cross-section and the second portion has a second cross-section that is greater than the first cross-section and an area between the first portion and the second portion forms a positioning surface to engage the first aperture of the closure member to align the stem and the closure member. A fastening member couples the stem to the closure member. | 06-11-2009 |
20090294719 | VALVE FOR A COMPRESSED GAS CONTAINER - A valve for a compressed gas container, with a longitudinal valve housing, which is held in a valve disc at one end and surrounds a channel for the medium which is to be discharged, a valve member, which is partly arranged in the channel of the valve housing and projects from the valve housing at the held end thereof, a sealing element, which sealingly encloses the valve member and whose position on the valve housing is fixed, wherein the valve member features an outlet channel, which can be brought into connection with the channel of the valve housing via at least one cross bore, wherein the outlet channel features a bore on its bottom, via which the outlet channel of the valve member is in connection with the channel of the valve housing, wherein the bore is closed by a spring prestressed valve body, which is lifted from the bore against the spring force upon a predetermined pressure in the channel of the valve housing and unblocks a direct connection between the channel of the valve housing and the outlet channel of the valve member. | 12-03-2009 |
20090294720 | METHOD OF DESIGNING MINUTE FLOW RATE CONTROLLER WITH ENTRANCE THROTTLE GROOVE - A method of designing a minute flow rate controller that is capable of accurately controlling the minute flow rate of a fluid and realizing desired valve characteristics without inducing any unsteadiness of fluid flow and has a simple configuration with respect to a throttle groove for controlling the fluid flow rate. With respect to a minute flow rate controller comprising inflow passage ( | 12-03-2009 |
20100032606 | BALL SEAT VALVE, USE OF THE SAME, AND METHOD FOR CONTROLLING A VALVE ASSEMBLY COMPRISING A BALL SEAT VALVE - A ball seat valve, use thereof, and method for controlling a valve assembly comprising a ball seat valve, wherein the valve body has a chamber and a plurality of inlet openings in the chamber. The inlet openings together have an inflow area leading into the chamber through which a medium can flow, and wherein the medium flows through said openings simultaneously as these are connected to one another in parallel. The valve has a seat with an outlet opening leading out of the chamber through the valve body, and wherein the outlet opening has an outflow area leading out of the chamber through which the medium can flow. Additionally, the valve has a ball which is situated in the chamber so as to be displaceable to open up or block the outlet opening. It is advantageous that the plurality of inlet openings comprise more than 10, especially more than 50, individual such inlet openings, resulting in a decrease in pressure between the inflowing medium outside and that inside the chamber. | 02-11-2010 |
20100065770 | Expansion valve, in particular for a cooling-medium system - The invention relates to an expansion valve, in particular for a vehicle air-conditioning system operated with cooling medium, with a valve seat ( | 03-18-2010 |
20100072411 | DOUBLE SEAT VALVE APPARATUS AND METHOD - A valve assembly has a valve body having an upper portion defining an upper chamber having an upper valve seat, and a lower portion defining a lower chamber having a lower valve seat, with an intermediate seat region between the upper valve seat and the lower valve seat. An upper valve stem is movable between a closed position seated against the upper valve seat and an open position spaced apart from the upper valve seat, and a lower valve stem is movable between a closed position seated against the lower valve seat and an open position spaced apart from the lower valve seat. A blocking ring is disposed in between the upper valve stem and the lower valve stem, and in contact with the intermediate valve seat. When the upper valve stem is open and the lower valve stem is closed, fluid escaping the upper chamber impinges on the blocking ring. When the upper valve stem is closed and the lower valve stem is open, fluid escaping the lower chamber impinges on the blocking ring. | 03-25-2010 |
20100252770 | REDUNDANT METAL-TO-METAL SEALS FOR USE WITH INTERNAL VALVES - Redundant metal-to-metal seals for use with internal valves are described. A plug having redundant sealing functionality for use with a poppet of an internal valve includes a tapered surface to sealingly engage a seat of the poppet. Additionally, the plug includes a seal adjacent the tapered surface and disposed in a groove defined by the plug to sealingly engage the seat. | 10-07-2010 |
20100301253 | VALVE SEAT APPARATUS FOR USE WITH FLUID VALVES - A valve seat apparatus for use with fluid valves is described. An example valve seat apparatus includes a flexible seal disposed between a cage and a valve body such that an outer seating surface of a closure member slidably coupled to the cage slidingly engages the flexible seal to prevent fluid flow through the valve body when the valve is in a closed position and an end of the closure member is not driven into abutting engagement with another seating surface when the valve is in the closed position. | 12-02-2010 |
20100327208 | THREE-WAY POPPET VALVE WITH INTERNAL CHECK FEATURE - A three-way poppet valve that can restrict or eliminate backflow without the use of an external check valve. Unlike conventional three-way poppet valves wherein both inlets can be open to the outlet at the same time during movement of the poppet, the valve according to the present invention can be configured to close both inlets prior to opening one of the inlets to the outlet. The valve features a poppet valve assembly that is operable to prevent both inlets from being open to the outlet at the same time. The valve assembly also reduces the force needed to close the valve against at least one of the inlets thereby allowing the use of a smaller actuator. A unique seal including a valve seat that is configured to conform to a valve member under sufficient pressure. | 12-30-2010 |
20110042605 | MICRO-VALVE - The invention relates to a micro-valve ( | 02-24-2011 |
20110079744 | PRESETTABLE GAS VALVE - A presettable gas valve is disclosed herein. The gas valve may have a maximum gas flow that can be adjusted to the particular requirements of the fireplace in which the gas valve is used. By way of example and not limitation, for real biomass/fuel burning fireplaces, the gas valve may be opened to its maximum level with a quarter turn of a handle. In contrast, for fake fireplaces, which require more gas flow compared to real fireplaces, the gas valve may be opened to its maximum level with a half turn of the handle. The maximum gas flow through the gas valve may be set during installation such that the user does not need to manually determine the appropriate amount of gas during use. | 04-07-2011 |
20110127459 | MICROVALVE AND VALVE SEAT MEMBER - In a microvalve, a valve seat includes a cylinder portion that includes a through hole in a central portion thereof, and a flange portion that is provided around an axial end of the cylinder portion and that has a thick seal portion on a periphery of the flange portion. The cylinder portion is disposed in an opening of a valve housing with a gap δ therebetween, and the seal portion is able to move away from the seal surface provided around the opening and away from the displacement member. In an open state, at least one of a flow path through the through hole and a flow path through the gap between the cylinder portion and the opening is open, and in a closed state, the seal portion is sandwiched between the displacement member and the seal surface. | 06-02-2011 |
20110186766 | VALVE SEAL - A device in a valve ( | 08-04-2011 |
20110186767 | INTAKE VALVE FOR A CYLINDER OF THE HIGH-PRESSURE FUEL PUMP OF A COMMON RAIL INJECTION SYSTEM - An intake valve for a cylinder of the high-pressure fuel pump of a common rail injection system has a valve body with an inlet opening and a closing member. The closing member closes the inlet opening in a first end position. The member can be moved relative to the inlet opening depending on a pressure difference. The intake valve has a non-linear volumetric flow characteristic. | 08-04-2011 |
20110233445 | VALVE FOR SPRAYING COATING MATERIAL, AND AN ATOMIZER INCLUDING SUCH A VALVE - This valve ( | 09-29-2011 |
20110297867 | FLOW GUIDED VALVE SEAT FOR STEAM TURBINE VALVES - A flow valve includes a control valve having a movable body, a stop valve having a movable body; and a valve seat having a facing surface that contacts at least a portion of one of the control valve body or the stop valve body when the flow valve is in a closed position, the facing surface of the valve seat being configured to merge with a rear portion of the valve seat at a tip portion, the facing surface of the valve seat having an aerodynamic profile that provides for a guided flow in a flow direction through the flow valve. | 12-08-2011 |
20120025121 | PRESSURE-BALANCED CONTROL VALVES - A valve assembly comprises a valve body comprising a plug chamber. A static seal is disposed adjacent an inner sidewall of the plug chamber, and a plug comprising a plug head is moveably positioned within the plug chamber, the plug head being configured to contact the static seal only when the plug is adjacent to a seat ring. Methods of using a valve and methods of forming a valve assembly are also disclosed. | 02-02-2012 |
20120181470 | CHOKE TRIM ASSEMBLY - A choke trim assembly for use as a shuttle seat in a choke valve including a flange sleeve is disclosed, the choke trim assembly comprising a trim, a trim carrier, and a clamp ring, wherein the trim carrier and the clamp ring each have a tubular member, an outer diameter of the tubular member of the clamp ring being configured to enable a slip fit of the choke trim assembly into an inner diameter of the flange sleeve, the trim being centered in the clamp ring, and an outer diameter of the tubular member of the trim carrier and the inner diameter of the clamp ring being configured to enable a slip fit of the trim carrier into the clamp ring. | 07-19-2012 |
20120211691 | Valve for Controlling a Fluid - A valve for controlling a fluid includes a closing body and a valve seat. The closing body opens and closes a passage at the valve seat along a sealing line. The valve seat and the closing body have a rotationally symmetrical region where the sealing line between the valve seat and closing body is formed. The valve seat and/or the closing body also has a nonrotationally symmetrical region, which adjoins the rotationally symmetrical region in a throughflow direction of the valve. | 08-23-2012 |
20120223267 | VALVE HAVING OPPOSED CURVED SEALING SURFACES ON A VALVE MEMBER AND A VALVE SEAT TO FACILITATE EFFECTIVE SEALING - An illustrative valve is disclosed that includes a valve body, a valve seat disposed within the valve body that has a first curved sealing surface and a valve member having a second curved sealing surface that is adapted to sealingly engage the first curved sealing surface, wherein the first and second curved sealing surfaces are opposed curved sealing surfaces. | 09-06-2012 |
20120248365 | OPENING AND CLOSING VALVE FOR HIGH-PRESSURE GAS - A pilot valve is provided with a conical first contact surface, and a pilot valve seat is provided with an annular second contact surface of which an initial contact portion with respect to the first contact surface has a circular-arc cross-section. The first contact surface is formed of a resin with elasticity, and the second contact surface is formed of metal. When a pressure-contact load is small, the first contact surface and the second contact surface come into line-contact with each other. When a pressure-contact load increases, the first contact surface and the second contact surface come into plane-contact with each other. | 10-04-2012 |
20120292549 | THREE-WAY POPPET VALVE WITH INTERNAL CHECK FEATURE - A three-way poppet valve that can restrict or eliminate backflow without the use of an external check valve. Unlike conventional three-way poppet valves wherein both inlets can be open to the outlet at the same time during movement of the poppet, the valve according to the present invention can be configured to close both inlets prior to opening one of the inlets to the outlet. The valve features a poppet valve assembly that is operable to prevent both inlets from being open to the outlet at the same time. The valve assembly also reduces the force needed to close the valve against at least one of the inlets thereby allowing the use of a smaller actuator. A unique seal including a valve seat that is configured to conform to a valve member under sufficient pressure. | 11-22-2012 |
20120298903 | VALVE WITH CONNECTION ON THE PRESSURE SIDE - The invention refers to a valve, in particular a pressure valve, comprising a feed area provided in front of a globe valve in flow direction of the medium, wherein the globe valve can be sealed by a loose closing element provided in the feed area, and wherein an activation rod angles the closing element against the flow direction of the medium with reference to the globe valve. The invention is characterized in that in the feed area a flow guiding device is provided, wherein the flow guiding device has several channel areas, so that the medium flowing through the channel areas is set in a helical twist. | 11-29-2012 |
20120313029 | VALVE FOR CONTROLLING A FLUID - A valve for controlling a fluid includes a valve seat and a closing body which has a spherical-cap-shaped end region and which is configured to open up and close off a passage at the valve seat. The closing body is rotatably mounted on a bearing and has at least one contouring formed on a surface of the closing body. The contouring is configured to set the closing body in rotation. | 12-13-2012 |
20130015386 | COAXIAL VALVE HAVING A SEALING ELEMENT - A coaxial valve ( | 01-17-2013 |
20130032745 | FACE SEALING ANNULAR VALVE - In a face sealing annular valve, an annular valve member is retained around or within a guide. The annular valve member is configured so that, when the annular valve member and the annular valve seat are coaxial, the spacing between the guide means and the guide-engaging surface region increases with distance along the central axis from a minimum of spacing between the annular valve member and the guide means. An end stop limits the tilt of the annular valve member. Advantageously, the annular valve member has restricted radial movement, enabling a good seal to be formed, while being unable to simultaneously contact diametrically opposite sides of the guide and jam. | 02-07-2013 |
20130092863 | VALVE CONTROL DEVICE - The present invention relates to a valve control device ( | 04-18-2013 |
20130119290 | FLUID CONTROL VALVE - A fluid control valve is configured in a manner that a first passage has at one end portion thereof a first port communication passage communicating with a first port, and at the other end portion thereof a first valve hole communication passage communicating with a valve hole, and the first port communication passage and the first valve hole communication passage communicate with each other. The resin valve body is provided with a valve seat support part which supports the valve seat and which is provided between the valve chamber, and the first port communication passage and the first valve hole communication passage. The valve seat support part has a valve seat reinforcement part, and the valve seat reinforcement part is formed so as to partially close the inside of the first passage. | 05-16-2013 |
20130270473 | Valve for Controlling Fluids - A valve for controlling fluids with an improved flow behavior includes a valve element with a through opening and a valve seat, wherein the valve seat is formed on a first conical region of the valve element, and closing element opens and closes the through opening at the valve seat, wherein the through opening has a shape which widens in the flow direction. | 10-17-2013 |
20130277595 | REGULATING VALVE - A regulating valve for flow control of a medium in a heating or cooling system includes a valve body including an inlet connection, an outlet connection, and a valve neck in which a valve seat and a flow through opening are provided. In the valve neck, a complete valve trim and a valve hand wheel are provided. The valve body includes a first cone to determine the preset (Kvs-value) of the maximal flow through the complete regulating valve. The first cone has at least one opening for flowing through of the medium, where the design of the opening determines the regulating characteristic of the complete regulating valve, and where the Kvs-value of the valve is changed continuously, with maintained regulating characteristic. The first cone is arranged continuously, axially displaceable relative the valve seat, whereby selected parts of the opening of the first cone are shielded by the valve seat. | 10-24-2013 |
20130292596 | Offset type camming plug valve - An offset type camming plug valve comprising a housing having inlet and outlet ports connected by a reduced orifice, a plug capable of swinging to and from said orifice and motivated by a rotating shaft whose center is offset from the axis of said orifice and wherein said plug has a slotted opening communicating with the orifice when the plug has been rotated from the close position. | 11-07-2013 |
20140070126 | VALVE ASSEMBLY - A valve assembly for sealing a port of a housing includes a primary sealing member and a secondary sealing member mounted to a valve body. Valve body includes a lower body with an upper portion depending from the body having a cross sectional diameter less than the upper body, and a lower portion depending from the upper portion having a cross sectional diameter less than the upper portion. The primary member includes apertures and is slidably mounted to the upper portion, and the secondary member is mounted to the lower portion. In a closed position the secondary member seals against the primary member, and the primary member seals against the port. Downward movement of the valve body unseals the secondary member from the primary member allowing venting through the apertures, and then unseals the primary sealing member from the port allowing full venting through the housing. | 03-13-2014 |
20140158924 | VACUUM VALVE AND CLOSURE MEMBER FOR CLOSING A FLOW PATH IN A GAS-TIGHT MANNER BY MEANS OF A LINEAR MOVEMENT - A vacuum valve closes a flow path in a gas-tight manner using a linear movement and includes a closure member, a first sealing surface of the valve housing that encloses the opening, and a corresponding second sealing surface of the closure member. In the closed position, the second sealing surface is in sealing contact with the first sealing surface. In the region between the opening and the first sealing surface, the valve housing includes a first sloped surface that encloses the opening, and the closure member includes a corresponding, parallel second sloped surface. The sloped surfaces, which have a sloping angle between 3 and 15 degrees relative to the geometric adjustment axis, are located such that, in the closed position of the closure member, the second sloped surface is arranged in a parallel position opposite the first sloped surface at a distance of 0 and 0.6 mm. | 06-12-2014 |
20140191150 | POPPET VALVE WITH A FORMED SEAT, AND METHOD OF MAKING - A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat. | 07-10-2014 |
20140231693 | VALVE HAVING AN IMPROVED SEALING ELEMENT AND AN IMPROVED VALVE SEAT SUPPORT - A sealing element of a valve, e.g., a gas valve, for controlling a medium includes a base body having a sealing surface, the sealing surface either (i) being inclined in relation to a center axis of the sealing element or (ii) having at least one inclined area. In addition, a valve seat support of the valve for controlling a medium includes: a first ring-shaped valve seat in a first valve seat plane; a second ring-shaped valve seat in a second valve seat plane; and a passage aperture situated between the first valve seat and the second valve seat, the first and second valve seat planes being perpendicular to a center axis of the valve seat support. | 08-21-2014 |
20140264131 | Fluid Flow Valve - A fluid flow valve, the fluid flow valve having a body comprising a body inlet, a body outlet, and a housing; a movable member positioned within the housing and having a lower face, the movable member being movable between a position spaced from a position in said body when said valve is in an open position and movable to a sealing position when said valve is in a closed position; an elongated channel between the body inlet and the body outlet, wherein the channel has at least an essentially uniform internal diameter, with the exception of a raised seat therein, from the body inlet to the body outlet, and a raised seat positioned within the channel, wherein the lower face of the movable member is in the sealing position when positioned against the raised seat and a lip formed in the body. | 09-18-2014 |
20140367601 | VALVE SEALING ASSEMBLY - A valve assembly and a method for use, including a seat with one or a plurality of grooves along a periphery of the seat, the seat comprising a gasket inserted within the one or a plurality of grooves, with a portion of the gasket raised above an external surface of the seat, and a piston, having a first face configured to matchingly cover a portion of the seat and a second face to matchingly cover a portion of the gasket, configured to apply pressure to the gasket to cause expansion of the gasket within the one or a plurality of grooves, forming a tight seal between the gasket and the face of the piston. | 12-18-2014 |
20150008354 | Control Cone for Control Valves, in Particular Angle Control Valves, for Critical Operating States - The invention relates to a control cone for control valves, in particular angle control valves, for critical operating states resulting from cavitation or flashing of abruptly vaporising and erosive media, the control valve comprising a valve seat ( | 01-08-2015 |
20150108387 | COMPRESSIBLE VALVE FOR A PRESSURIZED CONTAINER - A compressible valve for use with a pressurized container for dispensing an aerosol product. The compressible valve comprises a valve cup connected to a dispensing structure disposed inside an open top end of a bottle. A grommet is disposed in the valve cup and has an integral sealing portion and spring portion. A grommet longitudinal passageway passes through the spring portion and the sealing portion and is coaxial with a valve cup longitudinal passageway. An elongate valve stem is disposed in the grommet passageway. The grommet sealing portion provides a seal between the valve stem and the valve cup and between the dispensing structure and the valve cup. | 04-23-2015 |
20150375922 | COMPRESSIBLE VALVE FOR A PRESSURIZED CONTAINER - A compressible valve is used with a pressurized container for dispensing an aerosol product. The compressible valve comprises a valve cup connected to a dispensing structure disposed inside an open top end of a bottle. A grommet is disposed in the valve cup and has an integral sealing portion and spring portion. A grommet longitudinal passageway passes through the spring portion and the sealing portion and is coaxial with a valve cup longitudinal passageway. An elongate valve stem is disposed in the grommet passageway. The grommet sealing portion provides a seal between the valve stem and the valve cup and between the dispensing structure and the valve cup. | 12-31-2015 |
20160010752 | FLUID FLOW CONTROL DEVICES AND SYSTEMS | 01-14-2016 |
20160018021 | MICROFLUIDIC VALVE HAVING IMPROVED TOLERANCE TO PARTICLES - The present invention describes a valve for controlling the passage of a microfluidic system. Said valve comprises a first valve element ( | 01-21-2016 |
20160084211 | GAS VALVE - A gas valve | 03-24-2016 |
20160102766 | Balanced Double Seated Globe Valve With Flexible Plub - A valve plug includes a cylinder, a first plug seat, a second plug seat, and a convoluted portion. The cylinder has a first and second end. The first plug seat is disposed at the first end. The second plug seat is disposed proximal to the second end. The convoluted portion is disposed between the first seat and the second seat. The convoluted portion provides flexibility for the cylinder to flex between the first plug seat and the second plug seat. | 04-14-2016 |
20160109027 | VALVE SEAT AND VALVE DISC WITH CASCADED GEOMETRIES - Disclosed are a valve seat apparatus and valve disc apparatus. The valve seat can include a substantially hollow seat interior. The substantially hollow seat interior can also define a substantially frusto-conical seat cavity with a radial axis. The substantially hollow seat interior can have first and second wall sections, with the second wall section being aligned at a smaller angle relative to the radial axis than the first wall section. The valve disc can include a substantially frusto-conical valve body with a radial axis. The valve body can include first and second disc surfaces each aligned at an angle relative to the radial axis. The second disc surface can have an angle relative to the radial axis that is smaller than that of the first disc surface. | 04-21-2016 |
20160131264 | SELF-ALIGNING VALVE SEAL - A valve includes a valve body, a valve seat, and a poppet assembled with the valve body. The poppet includes an axially extending poppet stem and a radially extending poppet sealing surface. The poppet is axially movable between a closed position and an open position. The poppet sealing surface is defined by a sealing member disposed on the poppet stem. The sealing member is laterally movable on the poppet stem. When the poppet is moved from the open position to the closed position, the sealing member is laterally moved to align the sealing surface with the seating surface. | 05-12-2016 |
20160138732 | VALVE DEVICE AND FLUID COUPLING COMPRISED THEREOF - Embodiments of a valve device that reduces noise and vibration that may occur during low flow conditions in fluid couplings (e.g., valves and flow regulators). These embodiments utilize a plug and seat arrangement with geometry to prevent pressure differentials that cause the plug element to open and close in a cyclic pattern. In one embodiment, the valve device includes a seat element with an aperture and a plug element with a boss that extends into the aperture when the plug element contacts the seat element. The boss has an outer surface that forms a gap, which defines an annular area proximate the point of contact between the seat element and the plug element that is sized to reduce Venturi flow effects that cause the cyclic pattern to occur. | 05-19-2016 |
20160161005 | FUEL SUPPLY APPARATUS - A fuel injection apparatus includes a valve element provided with a flow passage allowing a fuel to flow therethrough, a valve seat which the valve element will contact with or separate from, and a casing accommodating therein the valve element and the valve seat. During valve opening in which the valve element is separated from the valve seat, the fuel flowing through the flow passage is discharged through a gap between the valve element and the valve seat. A direction in which the valve seat is placed relative to the valve element is the same as a direction of the fuel flowing in the flow passage. The fuel injection apparatus further includes a discharge-side flow passage in which the fuel to be discharged during valve opening is allowed flow. The discharge-side flow passage is formed outside an outer peripheral portion of the valve seat. | 06-09-2016 |
251334000 | Elastic deformation | 5 |
20090314979 | Valve apparatus - A valve apparatus that has a longitudinal axis therethrough comprises a valve seat member, a valve closure member, a fluid flow path, and a resilient valve insert member. The valve seat member comprises a hollow bore and a first frustoconical contact surface that has an inner perimeter and an outer perimeter. The valve closure member comprises a valve body and a second frustoconical contact surface that is adapted to seal against the first frustoconical contact surface in a strike face area. The valve closure member is movable along the longitudinal axis of the valve apparatus. The fluid flow path extends through the bore of the valve seat member and between the valve seat member and the valve closure member. This fluid flow path is closed when the second frustoconical contact surface is sealed against the first frustoconical contact surface. The resilient insert member is attached to the valve closure member. It has an inner perimeter and an outer perimeter, the inner perimeter being adjacent to the strike face area on the second frustoconical surface. The resilient insert member is offset and adapted to contact the first frustoconical contact surface and form a hydraulic seal therewith at the inner perimeter of the insert member, before the first frustoconical contact surface comes in contact with the second frustoconical surface as the valve closes. The offset of the insert member is greater at its outer perimeter than at its inner perimeter, and is greater at its outer perimeter than the diameter of the largest particle in any fluid to be pumped. The insert is deformable but substantially non-compressible and comprises a particle retaining means to accommodate solid particles that are trapped between the insert and the valve seat member when the valve closes. The particle retaining means has at least one cavity (void space) that is in fluid contact with the flow path for fluids between the valve seat member and valve closure member when the valve is open. The cavity has an opening in fluid contact with the flow path for fluids when the valve is open and is large enough to accommodate one or more solid particles within the interior of the cavity. The volume of the cavity contracts as the valve closes, whereby solid particles are screened from the fluid and retained within the cavity, and whereby clear fluid is forced out of the cavity into the flow path and directed inwardly toward the bore of the valve seat member through the gap between the first and second frustoconical contact surfaces. | 12-24-2009 |
20130020521 | PRECONFIGURED SEAL FOR VALVE ASSEMBLIES - A valve assembly is disclosed herein having a valve member and a valve seat body. The valve member is reciprocatingly movable into and out of engagement with the valve seat body. The assembly further includes at least one deformable seal positioned to be at the situs of engagement of the valve member with the valve seat body. The at least one seal is preconfigured with a recess facing the situs to form a pocket to trap fluid therein as the valve member approaches the engagement, which reduces the velocity of the valve member moving toward the engagement and reduces the impact force of the valve member on the valve seat body. Furthermore, the fluid disposed within the pocket also reduces the axial load on the valve member and valve seat body. | 01-24-2013 |
20140021398 | Tunable Valve Assembly - A tunable valve assembly reduces valve-generated vibration. One embodiment comprises a valve body and valve seat having substantially collinear longitudinal axes. A rebound characteristic frequency is associated with rebound of the elastic valve body base plate from forceful contact with the valve seat. A central cavity in the valve body encloses a spring-mass damper optionally immersed in a dilatant liquid and having a damper resonant frequency approximating a pump housing resonance. A lateral support assembly adjustably secured to the valve seat has a support resonant frequency designed in conjunction with the rebound characteristic frequency and the damper resonant frequency. Combined hysteresis heat loss associated with the above three vibration frequencies is reflected in lower closing energy impulse amplitude and damping of associated vibrations. Compliance of the elastic valve body base plate mating with the valve seat increases closing energy impulse duration and narrows the corresponding induced vibration spectrum. | 01-23-2014 |
20140231694 | VALVE HAVING AN ENHANCED COLD START CAPABILITY - A valve for controlling a medium, e.g., a gaseous medium, includes: a valve support having at least one passage aperture; a closing element which is configured to open and to close the at least one passage aperture; and a valve seat including at least one area projecting in the axial direction of the valve, the projecting area being coated with an elastomeric sealing element, and the elastomeric sealing element being exclusively situated on the projecting area of the valve seat. | 08-21-2014 |
20150060716 | GATE VALVE WITH FLOATING SEAL - A valve stem-plug and seal assembly includes a valve stem-plug having first and second axially spaced peripheral shoulders forming a groove there between. A floating seal gasket is arranged in the groove. The floating seal gasket is an annular ring with a central opening through which the valve stem-plug extends. Further, the outer surface of the floating seal gasket includes an upper and a lower circumferential extending segment, wherein the segments are arranged for sealing against a valve seat and thereby forming a double-contact seal. The outer surface of the floating seal is concave between the upper and lower circumferentially extending segments such that a leakage chamber is formed between the valve seat and said upper and lower circumferentially extending segments when the double-contact seal is formed. The floating seal gasket itself and a valve assembly in which the valve stem-plug and seal assembly is used are also disclosed. | 03-05-2015 |