Class / Patent application number | Description | Number of patent applications / Date published |
251328000 | Seats | 40 |
20090020720 | METHODS AND APPARATUS TO ALIGN A SEAT RING IN A VALVE - Methods and apparatus to align a seat ring in a valve are described. An example fluid valve includes a valve body having a curved internal surface to receive a seat ring and a seat ring having a sealing surface to receive a movable control member and a curved surface opposite the sealing surface to engage the curved internal surface of the valve body. | 01-22-2009 |
20090045371 | BONDED SLIT VALVE DOOR SEAL WITH THIN NON-METALLIC FILM GAP CONTROL BUMPER - The present invention provides a thin film spacer for maintaining a gap between a slit valve door and a sealing surface of a slit valve, such as a metallic insert. The film spacer can extend the life of a seal by limiting the line of sight exposure of the seal to corrosive gases within a wafer processing chamber, for example, and by controlling the compression percentage of the seal. The spacer may be located on an outer ambient side of the slit valve away from any corrosive gasses that may exist in the chamber. | 02-19-2009 |
20090057597 | PROTECTION VACUUM GATE VALVE - The present invention relates to an improved vacuum gate valve for a corrosion prevention. The corrosion prevention vacuum gate valve comprises a second actuator which includes a hollow first body which has a second compression air inlet for moving up the corrosion prevention sealing member and a hollow second body which has a third compression air inlet moving down the corrosion prevention sealing member and at least one flow control groove which is provided at the upper side for moving the fluid from the chamber to the vacuum pump. | 03-05-2009 |
20090114872 | GATE VALVE - A gate valve comprising a first part ( | 05-07-2009 |
20090121173 | VALVE ASSEMBLY HAVING A REINFORCED VALVE SEAT - A knife gate valve includes a reinforced valve seat which prevents displacement of the valve seat when the valve is opened and closed. The valve includes a valve body defined by a first and second body halves. The valve halves are assembled to define a flow path, a knife gate channel and a seat channel. A knife gate is disposed between the body halves and is adapted to traverse the gate channel. The knife gate is configured to be in an open position to allow process flow through the valve and a closed position to prevent process flow through the valve. A seat assembly is positioned within the channel guide and is defined by a horizontal segment, a pair of vertical segments and a lower segment. The seat assembly is compressed between the first and second valve body halves. At least one reinforcing plate is disposed within a portion of the horizontal segment, such that the horizontal segment maintains its rigidity when the knife gate traverses the seat assembly. | 05-14-2009 |
20090236554 | KNIFE GATE VALVE WITH SKEWED GATE SEAT INTERFACE - A valve assembly comprising a valve body defining a fluid passage with a seat member positioned adjacent the fluid passage. A gate, having a leading edge, is supported in the valve body and is moveable relative to the fluid passage along a given axis between an open position and a closed positioned wherein the gate sealingly engages the seat member. The seat member includes a portion whose tangent is perpendicular to the given axis. At least a portion of the gate leading edge that is laterally aligned with the portion of the seat member whose tangent is perpendicular to the given axis may extend at an obtuse angle relative to the given axis. The gate leading edge may be configured such that any portion of the leading edge contacting a respective portion of the seat member is non-parallel to a tangent of that portion of the seat member. | 09-24-2009 |
20100001222 | VALVE, NAMELY FOR BOTTLES FOR ULTRA-HIGH PURITY GAS - A valve for pressurized or liquefied gas comprises a valve body ( | 01-07-2010 |
20100264350 | VALVE ASSEMBLY HAVING A UNITARY VALVE SLEEVE - A valve assembly preferably including a housing having a recess and a flange face and a valve sleeve disposed within the recess. The sleeve preferably includes an annulus having an outer surface and an inner surface that defines a passageway about a central axis, the outer and inner surfaces being radially spaced from one another to define a wall. The wall has a first end portion and a second end portion axially spaced from the first end portion, and homogenous material properties from the first end portion to the second end portion. Preferably, the first end portion defines a lip for supporting the annulus in the recess and further defines a first chamber that encases at least a portion of a first support member. The second end portion preferably defines a flange portion along the outer surface for engaging the flange and further defines a second chamber that encases at least a portion of a second support member. | 10-21-2010 |
20100308252 | GATE VALVE - A gate valve is disclosed for mounting in a pipeline, the gate valve comprising a valve body and a gate mounted in the valve body so as to be movable between an open position, and a closed position where a valve opening formed in the valve body is closed by the gate. The gate comprises two opposed faces spaced from the transverse plane of the gate, at least one face being provided with at least two seals that each extend around the face one seal being located within the periphery of the other such that both seals, when the gate is in the closed position, seal against a seat of the valve body to seal against the pressure of fluid acting on the gate in use. A gate is disclosed having four seals in total, two on the upstream gate face and two on the downstream gate face. | 12-09-2010 |
20110037010 | GATE VALVE SEAT - A gate valve seat for a gate valve includes a seat having a stepped outer wall surface, with a spring, spacer ring, front facing lip seal, and a rear facing lip seal disposed about the stepped outer surface of the seat. The spring may be releasably locked into a compressed configuration for installation of the gate of the gate valve. | 02-17-2011 |
20110220828 | SLUICE GATE VALVE - The sluice gate valve includes at least one binding reduction mechanism to reduce binding during actuation of the sluice gate. In one embodiment the mechanism includes a the guide elements and the tracks, the guide elements and the tracks being arranged such that a predetermined amount of rotational motion of the gate around the stem is permitted during actuation of the valve to reduce valve binding. In another embodiment the mechanism includes a stuffing box assembly including a stuffing box, a bushing, and a collar, where a convex curved surface of the collar slides on a concave curved surface of the bushing such that a predetermined amount of pivoting of the stem up to a predetermined cone angle is allowed. In a preferred embodiment the sluice gate valve includes both mechanisms. | 09-15-2011 |
20110226976 | VALVE FOR CONTROL OF HIGH PRESSURE AIR PRESSURE AIR PULSE - A valve for use in the control of pressurised air from a pressure tank, the pressure tank including a wall in which an outlet port is formed, the wall having an inner surface and an outer surface. The valve comprises a valve body of generally cylindrical configuration having an inner end which in use is located inside the pressure tank and an outer end which in use is located outside of the tank. A flow passage extends through the valve body, the flow passage having an inlet at or adjacent the inner end of the body and an outlet at or adjacent the outer end of the body. A valve seat surrounds the flow passage and a valve closure member is moveable towards and away from the valve seat to close and open the valve respectively. An operating means is provided for moving the valve closure member in order to operate the valve. The valve is characterised in that the valve body has at least one laterally extending mounting formation at or adjacent the inner end thereof, the mounting formation being shaped and dimensioned to enable the inner end and the mounting formation to be introduced into the pressured tank through the outlet port, and when in position, the mounting formation engages with the inner surface of the wall of the tank adjacent the outlet port. The valve includes a mounting collar movable towards the mounting formation so as to engage the outer surface of the wall adjacent the opening and thereby clamp the tank wall between the mounting formation and the mounting collar. | 09-22-2011 |
20120080634 | VALVE BORE SEALING METHOD AND APPARATUS - A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat ring is mounted to the body at the intersection of the flow passage and the cavity, the seat ring having an engaging face. A gate in the cavity has an engaging face that slidingly engages the face of the seat ring while being moved between open and closed positions. A seat sealing element is located in a cavity between seat rings and a counterbore formed in the flow passage and body of the valve. The sealing element blocks flow from the flow path to the interior of the valve. The sealing element also prevents debris from entering the counterbore-to-seat interface to improve sealing integrity. The sealing element has an axial spring property that enhances contact between the seat and gate and accounts for thermal expansion of the valve internals. | 04-05-2012 |
20120138835 | Low Friction Coatings for Dynamically Engaging Load Bearing Surfaces - A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat ring is mounted to the body at the intersection of the flow passage and the cavity, the seat ring having an engaging face. A gate in the cavity has an engaging face that slidingly engages the face of the seat ring while being moved between open and closed positions. A friction-resistant coating is on at least one of the faces. | 06-07-2012 |
20120228537 | GATE VALVE ASSEMBLY WITH AN AXIALLY FLEXIBLE SEAT - A gate valve assembly having metallic valve seats that are axially resilient and maintain a static sealing interface between the valve seat and a body pocket and a sliding dynamic sealing interface between the valve seat and a gate in the valve assembly. The valve seats are annular members having slots formed radially through the valve seats from the inner and outer circumferences. Sleeves may be provided that are coaxial to the valve seats; the sleeves may be on the inner surface of the valve seats, outer surface of the valve seats, or both. Shims may optionally be set in the slots. | 09-13-2012 |
20120256113 | REPLACEABLE FLOATING GATE VALVE SEAT SEAL - A gate valve includes a floating gate valve seat that effects a seal between a gate of a gate valve and a gate valve body using a metal seal. The gate valve includes a floating gate valve seat interposed between a gate and a gate valve body. The gate valve seat has a spring member with a cylindrical portion secured to the gave valve seat. The spring member has a leg that exerts a spring force against the gate valve body to maintain a seal between the floating gate valve seat and the gate. A metal-to-metal seal seals between the cylindrical portion of the spring member and a cylindrical portion of the gate valve seat. | 10-11-2012 |
20120261603 | Gate Valve Having Low-Friction Coating Over Substrate and Method for Making Same - A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat fabricated from a ceramic and/or hardfacing alloy matrix composite substrate is mounted to the body at the intersection of the flow passage and the cavity. A gate fabricated from a ceramic and/or hardfacing alloy matrix composite substrate is installed at the cavity and has an engaging face that slidingly engages the seat while the gate is being moved between open and closed positions. The engaging faces of the gate and seats are coated with a low-friction material to facilitate sliding. The ceramic and/or hardfacing alloy matrix composite substrate construction of the gate and seats with low friction engaging surfaces enhances the gate valve's bearing stress capacity. | 10-18-2012 |
20120286182 | SPLIT GATE VALVE WITH BIASING MECHANISM - A system includes a split gate valve with first and second gate sections coupled together and configured to move together within a cavity of the split gate valve between an open position and a closed position. The split gate valve includes a rolling actuator to reduce friction and to convert a rotational input into a linear motion to move the first and second gate sections between the open and closed positions. The split gate valve also includes at least one expansion bar configured to bias the first and second gate sections from one another to seal against opposite seats of the split gate valve, wherein each expansion bar includes a spring mechanism configured to compress upon moving the first and second gate sections into and beyond the closed position to prevent buckling of the expansion bar. | 11-15-2012 |
20120319025 | Trunnion Control Gate Valve For Sever Service - This invention relates to a novel control valve with a new gating mechanism, new flow throttling mechanisms and metal seal rings, more particularly to a trunnion control gate valve with those novel features used for on-off and flow fluid throttling under multiple extreme conditions or in sever serve; such as the engine fuel control system with highly oxidative fluid under extreme temperature, the integrated gasification combined cycle (IGCC) under high temperature and pressure, Fluid Catalytic Cracking Unit (FCCU) under high temperature over 1200 F with diamond like catalytic particles, shale fracking process under high pressure and velocity fluid with sand and corrosive additives, other critical applications for products life lasting 5 to 30 years like deepsea flow control systems and nuclear power plants or for highly critical rocket engine applications of million cycles without failure. | 12-20-2012 |
20130001456 | GATE VALVE - A gate valve for controlling the flow of pressurized fluid having a dynamically-energized seal between a seat ring and a valve body. The dynamically-energized seal may be located in an annular groove defined in a flange sealing face of the seat ring to seal against an annular shoulder sealing face of the valve body. A plurality of fasteners may bring the flange sealing face of the seat ring to a mechanical stop against the shoulder sealing face of the valve body and dynamically energize the dynamically-energized seal. An obturator may engage and disengage the seat ring to control flow through the gate valve. | 01-03-2013 |
20130062548 | Backseat assembly for expanding gate valve - A backseat assembly includes: a housing that includes a bonnet and a tubular portion and forms a void and a passageway therein; a gate/segment assembly that includes a gate and a segment; a stem that moves upward or downward along with the gate while being connected to the gate; an elastic stopper that is provided in the bonnet so as to be located at a position facing the front end of the segment; a sealing surface that is formed on the bonnet; and a sealing surface that is formed on the stem and engages with the sealing surface formed on the bonnet, wherein when the gate valve is in the fully open position, a metal sheet is formed between the sealing surfaces respectively formed on the bonnet and the stem, and the segment is biased downward relative to the gate by the stopper. | 03-14-2013 |
20130105720 | Electro-Mechanical Three-Way Dual Seat Valve | 05-02-2013 |
20130105721 | Drive System For An Electro-Mechanical Three-Way Dual Seat Valve | 05-02-2013 |
20130112906 | NON-SLIDING GATE VALVE - A parallel movement mechanism including guide grooves and guide rollers and a vertical movement mechanism including cam grooves and cam rollers are interposed between a drive rod and a valve shaft of an air cylinder, and a valve seal of a valve plate is moved vertically toward and away from a valve seat surface to open and close the opening by moving the valve shaft in parallel to the valve seat surface by the parallel movement mechanism and moving the same vertically with respect to the valve seat surface by the vertical movement mechanism. | 05-09-2013 |
20130119288 | GATE SHEAR VALVE - A gate valve capable of shearing through any downhole tooling and maintaining its seal capability after the shearing operation is complete. The gate valve has a body with a flow passage therein and a gate being linearly movable between a closed position blocking flow through the flow passage and an open position. First and second valve seats are mounted on opposite sides of the gate and have sealing surfaces that engage the gate when the gate is in the closed position. Shear elements are connected to and carried by each of the valve seats and are capable of axial movement relative to the valve seats in response to movement of the gate from the open position to the closed position. | 05-16-2013 |
20130168591 | VALVE SEAT, VALVE WITH SEAT AND METHOD OF FITTING SEAT TO VALVE - A valve seat ( | 07-04-2013 |
20130313462 | GATE VALVE - A gate valve includes a valve plate located in a movable manner within a holder, a sealing for sealing off of the valve plate relative to the holder, and a wedge arrangement with several first wedge elements located on the valve plate in its direction of movement at a distance from one another, and second wedge elements belonging to the first wedge elements, by means of which the valve plate is pressed transverse to the direction of movement of the valve plate against the sealing with a movement into a closing position. In order to facilitate a low-friction actuation with a reduced actuation force, also in a compact and space-saving manner, the second wedge elements are supported on the holder, so that they can move relative to the holder. | 11-28-2013 |
20140001390 | Split Seat Shear Valve | 01-02-2014 |
20140021397 | SEALING ELEMENT FOR A GATE VALVE - An elastomeric sealing element for a gate valve is described, the sealing element being generally annular in shape and having a mounting region and an abutting region; and a narrowed portion being provided between the mounting region and the abutting region to allow deformation of the sealing element to facilitate introduction of a gate between the sealing element and another sealing element; and wherein the narrowed region of the sealing element includes an external annular recess disposed around an outer surface of the sealing element. Gate valves incorporating sealing elements are also described. | 01-23-2014 |
20140034861 | SEALING SYSTEM FOR INDUSTRIAL GATE VALVES AND GATE VALVE COMPRISING SUCH A SYSTEM - The present invention concerns a sealing system particularly for industrial safety valves, even more particularly for industrial gate valves. Hence, the subject of the present invention is both a sealing system ( | 02-06-2014 |
20140183396 | MULTI-VALVE SEAT SEAL ASSEMBLY FOR A GATE VALVE - A gate valve for use in oil field applications and including a seat seal assembly. The seat seal assembly includes primary, secondary, and tertiary seals for sealing the space between the seat rings and the valve body. The provision of multiple seals in the seat seal assembly provides redundancy that allows for maintenance of the seal between the components even if one or two of the individual seals fail. | 07-03-2014 |
20150014568 | Gate Valve with Seat Assembly - The present invention provides a gate valve assembly having a valve body with a channel extending from a distal end to a proximal end, a gate configured to be moved from a first position to a second position, the second position being when the gate is positioned in the channel of the valve body between the distal end and the proximal end of the valve body. A seat insert is also provided to be threaded into a pocked of the valve body and a seat is configured to be positioned within the seat insert. A seal is adapted within a groove of the seat insert positioned between the valve body and the seat insert, wherein the seal is a fixed static seal providing no gaps and/or spaces between the seal insert and the valve body allowing no debris to corrupt the seals. | 01-15-2015 |
20150060715 | Gate Valve Seal Ring - Embodiments of the present disclosure are directed toward a gate valve seal ring comprising a seat holder comprising a recess and a seat ring disposed within the recess, wherein the seat ring comprises a corrosion resistant and wear resistant material. | 03-05-2015 |
20150316155 | GATE VALVE - In a valve box that makes up a gate valve, a balance room is disposed on one side wall that faces toward a processing chamber. In the balance room, a first seal member is provided to surround a first pathway, and a second seal member is mounted on an outer edge of the balance room. Further, a balance port is formed in the balance room. The balance port communicates with an accommodating room that is formed in the interior of the valve box. In a valve closed state in which a valve disk is seated on a valve seat of the valve box, the pressure inside the accommodating room and the pressure inside the balance room are equalized or made uniform through the balance port. | 11-05-2015 |
20150353856 | FLUID TIGHT LOW FRICTION COATING SYSTEMS FOR DYNAMICALLY ENGAGING LOAD BEARING SURFACES - A protective coating system is described that is characterized by fluid impermeability and a reduced coefficient of friction. The coating system includes a carbide-based thermal spray composition; a low friction layer; and a sealant impregnated into the low friction layer. Unlike conventional materials, the coating systems of the present invention achieve and maintain sealing surfaces, without adversely impacting lubricity, wear resistance and corrosion resistance during the service life of the coated component. | 12-10-2015 |
20150354711 | KNIFE GATE VALVE - Knife gate valve comprising a body ( | 12-10-2015 |
20150369374 | GATE VALVE - To provide a gate valve in which the deterioration of a seal member due to radicals can be suppressed, and the seal member can be prevented from coming off a dovetail groove. A seal groove for attaching a seal member is formed by a first groove portion that has a rectangular cross-section and a second groove portion that is provided in the bottom wall of the first groove portion and that has a dovetail groove-like cross-section. The seal member is held in the second groove portion with part thereof protruded into the first groove portion. A valve seat that is inserted into and pulled out of the seal groove to be brought into and out of contact with the seal member is protruded from the inner surface of a partition wall in which a gate opening is provided. | 12-24-2015 |
20160076657 | BIDIRECTIONAL KNIFE GATE VALVE WITH A PERIMETER SEAT - Embodiments of the invention include a knife gate valve. The knife gate valve can include: a valve body that defines a center aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body, the gate configured to move vertically in relation to the valve body; a seat disposed in a portion of the valve body, the seat comprising a first end and a second end; and a packing area disposed within the valve body, wherein the packing area comprises a packing element is disposed around a portion of the gate; wherein the first end of the seat and the second end of the seat terminate within the valve body between a middle of the center aperture and the packing area. Other embodiments are also included herein. | 03-17-2016 |
20160102767 | Expanding Disk Gate Valve - An expanding disk gate valve assembly comprises two gate disks and an elastomeric disk. A first flange on a first gate disk mates to a second flange on a second gate disk forming an internal volume surrounding the elastomeric disk. An elastomeric sheath covers the mated disks with the first gate disk being radially offset from, and radially movable relative to, the second gate disk. A width of the gate disk assembly is less than a width between two valve seats when the gate disk assembly is in an open position. In a closed position, the first flange moves radially toward the second flange, compressing elastomeric disk, and causes the elastomeric disk to expand axially against the two gate disks, forcing them apart, and increasing the gate disk assembly width so that the gate disk assembly actively seals against the valve seats. | 04-14-2016 |
20160377183 | SLIT VALVE ASSEMBLY HAVING A SPACER FOR MAINTAINING A GAP - A spacer for maintaining a gap between a slit valve door and a sealing surface of a slit valve body, such as a metallic insert is described. The spacer can extend the life of a seal by limiting the line of sight exposure of the seal to corrosive gases within a wafer processing chamber, for example, and by controlling the compression percentage of the seal. The spacer may be located on an outer ambient side of the slit valve away from any corrosive gasses that may exist in the chamber. The spacer may be attached to the slit valve door partially in a depression therein, and may be integral with the seal. Further, the present invention provides improvements to a standard slit valve assembly that enhance the effectiveness of the slit valve and the spacer. These improvements include a barrier material to protect the seal, a labyrinth to reduce particle energy, a skew-plane slit valve door, and a recess with sidewalls to continue the geometry of the process chamber in order to move the collision plane away from the seal plane. | 12-29-2016 |