Abstract: A valve device of a device of a vehicle, actuated by a pressure medium has at least one valve closing member that can be brought by a valve member into an open or a closed position with respect to a valve seat for releasing or closing a flow cross section for the pressure medium. The valve closing member is connected to the valve member by at least one Cardan joint, such that the valve closing member can pivot spatially relative to the valve member.

Abstract: A vacuum valve, including a valve housing, which has a passage having an axis, a seat that surrounds the passage and that lies in a first plane, and a counter seat that surrounds the passage and that lies in a second plane that forms a wedge shape with the first plane, and including a closure device, which can be moved between an open position in which the passage is released and a closed position in which the passage is sealed and which has a closure plate parallel to the first plane and a counter plate parallel to the second plane, and including a valve rod, which has a longitudinal axis and which carries the closure device and which can be moved in a straight line.

Abstract: 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.

Abstract: Fluid flow control members for use with valves are described herein. An example fluid flow control member for use with a valve includes a body having a seat to control a fluid flow through the valve. The body defines a seating surface, an aperture to receive a stem of the valve and a plurality of substantially flat surfaces to enable gripping an exterior surface of the body.

Abstract: A valve including a valve seat having an annular body having a first annular end opposite a second end and an annular groove formed on the first annular end. At least one sealing member is within the groove, and at least a seat face insert is fitted to the sealing member for interfacing with a valve obturator and with the sealing member.

Abstract: A flat gasket for a valve has a substantially plate-like base body, which corresponds substantially to the contour of a valve housing to be connected thereto and which is provided with at least one first through-bore for leading through a connecting element of the valve, with at least one second and with at least one third through-bore for leading through fastening means. The second through-bore has a diameter which is different from the diameter of the third through-bore.

Abstract: A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flows through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.

Abstract: A valve for an anti-lock brake system, wherein the anti-lock brake system is configured for controlling flow of a fluid, includes a housing defining a cavity therein and having a longitudinal axis, a valve seat disposed within the cavity so as to define a first passage for the fluid, and an armature disposed within the cavity so as to at least partially define a second passage for the fluid. The armature is translatable with respect to the valve seat along the longitudinal axis and matable with the valve seat to seal off fluid communication between the first passage and the second passage. The armature defines a surface that is substantially resistant to corrosion from the fluid, and the surface is substantially free from a coating including zinc.

Abstract: The present invention relates to a seal for a valve for use in a pharmaceutical dispensing device, which seal is formed from an elastomeric composition comprising: (a) one or more elastomers; and (b) a cross-linking agent comprising an aliphatic dialkyl peroxide and/or an aliphatic perketal peroxide.

Abstract: A process for remanufacturing valve bodies such as fuel injector valve bodies includes receiving a salvaged valve body having a first segment, a second segment and a middle segment which includes a valve seat and a guide bore for a valve therein. The process further includes removing material of the valve body where the valve seat and the guide bore are disposed, and positioning an insert within the valve body in place of the removed material. A new valve seat and a new guide bore are then machined in the insert, including locating for machining the new valve seat and new guide bore on a timing face of the valve body.

Abstract: Flexible seals for process control valves are disclosed. An example disclosed seal includes a seal for use with a butterfly valve. The example seal includes a substantially flexible ring-shaped carrier configured to be fixed within the butterfly valve and to surround a flow control aperture therein. Additionally, the seal includes a ring-shaped cartridge coupled to an inner diameter of the ring-shaped carrier. The cartridge includes a first portion and a second portion coupled to the first portion to define a circumferential opening to hold a seal ring.

Abstract: A fuel injector is provided with a fuel inlet, a fuel outlet, and a fuel passage for communicating fuel from the inlet to the outlet. A valve and valve seat assembly is provided for selectively preventing and permitting fuel to pass from the fuel inlet to the fuel outlet. The valve seat is defined by a tubular body and a valve seat that traverses an inside wall surface of the tubular body. An upstream face of the valve seat is downstream of an upstream end of the tubular body and a downstream face of the valve seat is upstream of a downstream end of the tubular body. At least one passage is provided through the tubular body beginning downstream of the downstream face of the valve seat and upstream of the downstream end of the tubular body. A cover may be disposed at the downstream end of the tubular body.

Abstract: The present invention is directed to an injection molding valve configured to prevent the leaking or stringing of injected thermoplastic from the valve. The valve includes a housing having a first bore along a length thereof and a second bore intersecting the first bore. A rotatable member is inserted through the second bore and is in communication with a lever for the actuation thereof. The rotatable member includes a hole therethrough such that when the hole is aligned with the first bore, thermoplastic may travel freely through the first bore. The second bore further includes at least one groove in communication with a port for receiving injected thermoplastic. The injected thermoplastic is hardened to form an seal therein and configured to prevent thermoplastic from leaking out of the valve housing.

Abstract: A sealing apparatus and method is disclosed, particularly for sealing around an elongate member which passes through a throughbore of a valve device, the apparatus having an upper sealing element and a lower sealing element, each being adapted to change configuration from an open configuration to a sealed configuration within the valve device to seal the throughbore of the valve device around the elongate member. The upper and lower sealing elements are separate and moveable independently from one another, and are configured to be actuated between open and sealed configurations by a common actuator. This actuation reduces the stack height and the weight of the valve, and reduces the number of well seals.

Abstract: Disclosed herein is a selectively movable seat arrangement. The seat arrangement includes, one or more seat members movable between a passable position where a member is passable therethrough and an impassable position where the member is prevented from passing therethrough, and a counter in operable communication with the one or more seat members, the counter capable of allowing movement of the one or more seat members to the passable position to allow passage of a member a selected number of times and then to the impassable position thereby preventing passage of another such member for a period of time.

Abstract: Exemplary embodiments are directed to ball valves and associated methods that include a valve body, a ball disposed inside the valve body, a seat retainer, a seat, a stem and a stem bearing. The exemplary seat retainer includes an outer surface with a first outer diameter, a second outer diameter and a transition region connecting the first outer diameter and the second outer diameter in a ramped manner. The exemplary seat includes an annular groove on a seat face to provide two distinct contact points between the seat and the ball. The exemplary stem passes through a valve body opening and is in mechanical communication with the ball. The exemplary stem bearing includes a bore extending therethrough, a first inner diameter, a second inner diameter and a stem bearing transition region connecting the first inner diameter and the second inner diameter in a tapered manner.

Abstract: The invention relates to a valve for interrupting a flow path in a gas-tight manner. The valve has a valve housing, a valve plate, and a drive by means of which the valve plate can be shifted between an open position and a closed position. According to the invention, the valve has a seal support which, in a coupling position, can be coupled to and decoupled from a first seat of the valve plate on the latter and, in a parked position, can be coupled to and uncoupled from a second seat of a parking section in said section of the valve housing. A first seal is arranged on the seal support such that the first seal contacts a valve seat in a gas-tight manner in the coupling position and in the closed position, a gas-tight connection being formed between the first seal and a closing surface that lies on the valve plate. The seal support can be detachably coupled to the first seat of the valve plate in the coupling position by means of first coupling means.

Abstract: A unitary valve seat has a mesh ring with an extensible annular collar connected to the mesh ring, and a resilient layer made of polyurethane which is external to the mesh ring.

Abstract: Described is a valve face seal assembly. The assembly includes a moveable member, such as a poppet, and a seal having a sealing portion carried by the moveable member. A seat opposite the sealing portion of the seal has a transaxial seat face and an axial seat face extending axially toward the moveable member at an obtuse angle from the transaxial seat face. When the seal of the moveable member is brought into contact with the seat, a seal is formed with the transaxial seat face and with the axial seat face.

Abstract: A valve seat for use in a high pressure pump comprises an inner portion force fit within an outer portion. The outer portion has a fluid plenum at an outer peripheral surface. Fluid passages extend radially inwardly to communicate with a valve recess in the inner portion. A seal housing for a high pressure pump comprises an outer portion and an inner portion. The inner portion is force fit within the outer portion. The inner portion has an inner bore having a first location to receive seal packings, and a second location to receive valve spring structure. The inner portion has a curved surface that bottoms out against a curved surface within the outer portion.

Abstract: A damper mechanism comprising a single piece damper blade and a damper seal. The damper blade having a tie-down tab pair, with the tie-down tab pair positioned along a periphery edge of the damper blade for coupling a damper seal with the damper blade. The damper seal is comprised of a set of apertures for insertion of the tie-down tab pair for locking the damper seal with the damper blade.

Abstract: A valve cartridge for a magnet valve includes a capsule, a valve core, a valve body, a lower valve part and a flat filter. The valve core has a first end and a second end. The first end is inserted into the capsule. The valve body has a main valve seat. The valve body is inserted into the second end. The lower valve part is axially supported on the valve core and includes a nonreturn valve. The nonreturn valve includes a nonreturn valve seat and a nonreturn valve closing element. The flat filter has an inserted filter screen for filtering dirt particles. The filter screen is connected to the lower valve part. The nonreturn valve seat is placed in the lower valve part. An opening stroke of the nonreturn valve closing element is limited by an abutment contour arranged on the flat filter level with the filter screen.

Abstract: A coupling member is disclosed which includes a valve device that is axially movable between an open position and a closed position where the valve device closes an annular valve opening defined an outer valve seat portion and an inner valve seat portion. The valve device includes an outer annular sealing member and an inner annular sealing member. The inner annular sealing member includes an annular extending portion configured such that, when the valve device approaches the closed position, the annular extending portion sealingly engages the inner valve seat portion and is elastically bent to allow the valve device advance further to the closed position so that the outer annular sealing member positively engages the outer valve seat portion.

Abstract: A gate valve seat has structure formed on it to provide a sealing edge or lip which flexes when loaded. The lip forms a dual seal against portions of the gate valve body when the seat is placed under load.

Abstract: In a valve seat structure of a fluid control valve comprising a valve element, a body formed with an inlet port and an outlet port, and a valve seat member provided in the body, the fluid control valve being configured to bring the valve element into or out of contact with the valve seat member to control the flow of a fluid, the valve seat member is formed in a ring shape and includes a valve seat portion with which the valve element will come into our out of contact. Assuming that a thickness of the valve seat portion in a radial direction of the valve seat member is a first thickness t1 (0<t1), a second thickness t2 corresponding to a height of the valve seat member in a direction along an axis of the fluid control valve is determined in a range of 0.5 t1?t2?1.5 t1.

Abstract: Process valve for controlling and shutting off a fluid stream comprising a valve seat (10, 30) for receiving a movable valve body (14, 32) in a through hole (12, 36), the valve seat (10, 30) and the valve body (14, 32) are adapted to be pressed into and onto a sealing edge (18, 38) in order to prevent a fluid stream through the process valve. A circumferential groove (20, 36) resides in the valve seat and a flexible sealing lip (26, 44) is formed between the groove (20, 36) and the sealing edge (18, 38). The geometry of the groove (20, 36) is formed such that the side surface (22, 40) closer the sealing edge (18, 38) of the groove (20, 36) is arranged such that the size of the sealing lip (26, 44) increases with increasing depth of the groove (20, 36).

Abstract: A terminal valve having a cone (9) that communicates with a valve seat (10) of a seat ring (19) and cooperates with a veil (12) to control flow. The valve seat (10) and the veil (12) together form a sealing element, which seals against the cone (9) as well as the valve body (1). The cone (9) has a cylindrical portion (46) with slits (49, 50) that form a flow passage area which allows a flow that corresponds to a modified logarithmic function.

Abstract: A fluid passage valve is equipped with a valve body which is disposed rotatably through first and second shafts, a movable seat having a communication hole therein, and an elastic member that urges the movable seat toward a side opposite from the valve body. The first and second shafts are assembled and installed on the valve body such that an axis thereof is disposed at a position offset from a center of curvature of a spherical surface portion of the valve body. The fluid passage valve is placed in a valve-closed condition by the spherical surface portion abutting against a seating surface and closing the communication hole, and is placed in an open condition by the valve body separating away from the movable seat and thereby opening the communication hole.

Abstract: The present invention is directed to a pressure-responsive valve assembly which functions in the nature of a check valve to control fluid flow across the assembly. The assembly includes a valve body which defines first and second internal flow passages, and includes a valve seat through which at least one flow port extends for joining the first and second passages in fluid communication with each other. A flexible, resiliently deformable valve member is positioned in operative association with the valve seat, and can be deflected, in response to a sufficient pressure differential, to move out of sealing engagement with the valve seat, to thereby permit fluid flow through the valve assembly.

Abstract: A valve seat insert operable with a valve to selectively open and close a passage to a cylinder in an internal combustion engine. The valve seat insert includes a cobalt alloy base including at least about 40 wt % Co and at least about 5 wt % Cr. An oxide scale coating is disposed on at least a wear face of the valve seat insert adapted to engage the valve and optionally on a portion of the valve.

Abstract: A multi-piece valve disk of a sliding and/or seat valve, a ring seal with an elastic sealing ring with an external sealing zone is placed in a ring groove of the valve disk onto a dimensionally stable backup ring, and where an elastic restoring region effectively positioned between the backup ring and the external sealing zone is arranged in the backup ring, the restoring region being embodied in one piece with the sealing ring of its material adjacent to the external sealing zone of the sealing ring.

Abstract: The valve is designed to be connected to a sanitary waste pipe system for admitting atomospheric air into the waste pipe towards the valve function elements in response to a pressure reduction in the system in order to protect the water traps in the system and to prevent discharge of contaminated air from the system to the atmosphere. It includes an oblong bowl-shaped valve housing (10), a vertical tubular member (12) extending downwards from the housing (10) and adapted to be connected to the waste pipe system, an inner space (18) within the valve housing (10) and containing the valve function elements (34), at least one passage (26) from the valve function elements (22) towards the surrounding atmosphere and a cover member (14) overlying the inner space and having a top wall spaced above the valve function elements (20, 22, 34).

Abstract: A water-saving valve assembly has a base, a control valve device and a buffer device. The control valve device is mounted in the base. The water-saving valve assembly is mounted on an exit of a water pipe. Users can control the flowing out or stopping of water in the water pipe via the control valve device. The buffer device provides a gradual effect of switching off and can effectively reduce positive and negative pressure waves generated in the water pipe. Noises and damage to the water pipe are also prevented.

Abstract: A double seat valve having a seat for cooperation with two valve disks which are linearly adjustable relative to each other and together relative with respect to the seat, for a seat valve function and a sliding valve function, each of the valve disks containing a ring seal with an elastic sealing ring in a ring groove, both sealing rings being manufactured with the same shapes and dimensions, each sealing ring being positioned in the ring groove with a backup ring, and both sealing rings being arranged in rotational positions differing with respect to the respective sealing function relative to the direction of adjustment of the valve disks.

Abstract: A cladding alloy powder consisting of: 0.7 to 1.0 mass % C; 30 to 40 mass % Mo; 20 to 30 mass % Ni; 10 to 15 mass % Cr; and a balance including Co and unavoidable impurities, or consisting of: 0.2 to 0.5 mass % C; 30 to 40 mass % Mo; 20 to 30 mass % Ni; and a balance including Co and unavoidable impurities.

Abstract: A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.

Abstract: It is intended to provide a steam valve, which can reduce vibrations of each part of the steam valve, can suppress pressure loss and can cut off the steam rapidly. The steam valve 1 changes an area of a flow path between the valve seat 4 and the valve body 2 and adjusts a flow of steam passing through the flow path by moving the valve body 2 relative to the valve seat 4. The valve body 2 satisfies a relationship of r>0.6D0, where r is a curvature radius of the valve head portion 2A and D0 is a seat diameter of the valve seat 4. A tapered portion 2B is provided on an upstream side of the valve head portion 2A and its surface is tilted toward a direction of relative movement of the valve body 2 to the valve seat 4 more than that of the valve head portion 2A.

Abstract: A valve control device includes an operating stem, a valve top plate, a valve seat rubber, a valve bottom plate, and a valve seat ring. The valve top plate has a conical base with at least three stabilizer arms extending therefrom. Each of the at least three stabilizer arms has a flat outer surface. The valve bottom plate secures the valve seat rubber between the valve bottom plate and a flat bottom surface of the valve top plate. The valve bottom plate, the valve seat rubber, and the conical base are mounted on the operating stem. The valve seat ring has multiple slots, with each of the slots corresponding to one of the at least three stabilizer arms. A standpipe drain system, a method of draining a standpipe, and a locking fire hydrant with a valve access channel drain also are described.

Abstract: 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.

Abstract: The invention provides a valve which suppresses a continuous corrosion of a chemical compound phase such as an eutectic carbide or the like in a valve seat, and improves a corrosion resistance, an impact resistance and an erosion resistance of the valve seat. The invention disperses a chemical compound phase such as the eutectic carbide or the like crystallizing in a dendrite gap as a granular shape or a blocky shape which is equal to or less than about 100 ?m, by moving a tool rotating in a crimped state by a load application to a vertical direction to a surface of the valve seat so as to carry out a friction stir processing, and forming a weld metallographic structure of a surface layer portion of the valve seat as a cubic.

Abstract: The present invention provides more efficient, cost effective coke drum valve devices and system as well as more efficient, cost effective methods for isolating the flow of matter in a delayed coker unit operation. Specifically, embodiments of the invention relate to various seat systems used in valves for delayed coking operations.

Abstract: An improved disk-valve fuel injector comprising a self-centering, floating valve seat insert disposed in a valve body. The valve seat insert includes a circular first valve seat and the body includes a circular second valve seat concentric with the first valve seat. A spring urges the valve insert into compliance with a disk-shaped valve head. The valve insert is able to adjust position in all three dimensions, allowing the disk head to mate precisely with both seats, thereby minimizing leakage when the valve is closed, improving metering precision, and extending the working lifetime of the valve head and valve seats.

Abstract: A valve arrangement including a valve body and a valve seat each having an opposed surface, the valve arrangement also includes a high-frequency cyclic actuator to move the valve body with respect to the valve scat seat to bring the opposed surfaces into and out of abutment, characterised in that the opposed surface at least one of the valve body and the valve seat includes a resiliently displaceable surface.

Abstract: A microfluidic purge valve in a microfluidics system includes a notch defined in the valve seat of a microfluidic valve. The notch is sized so that gas entrained within a liquid pumped through the microfluidics system can pass freely therethrough but the liquid cannot. The notch is sized so that the resistant force generated by the surface tension of the liquid is equal to or greater than the force generated by the fluid pressure.

Abstract: A flush valve has a valve body having an inlet and an outlet, and a piston disposed in the valve body between the inlet and said outlet to regulate flow through the valve body. The piston has a shoulder. A neck depends from the shoulder and has a smaller perimeter than the shoulder. And, a flange depends from the neck and has a larger perimeter than the neck. Better flow characteristics of fluid about the shoulder, neck, and flange minimize noise coming from the valve and increase reliability thereof.

Abstract: An exhaust valve structure includes: an inner cylindrical portion that forms an introducing passage of exhaust gas and that has a stay member; a valve element that closes or opens the introducing passage; and a wire mesh that is fixed to the stay member and that contacts the valve element when the introducing passage is closed. The wire mesh is formed in a shape such that a diameter of the wire mesh gradually increases toward a downstream side of the introducing passage and a load exerted on the stay member when the valve element contacts the wire mesh is distributed in a diameter-increasing direction in which the diameter of the wire mesh increases.

Abstract: 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.

Abstract: A directional control fluid valve for establishing a first throughflow path, with which fluid is sucked in and supplied under pressure to a consumer, and a second throughflow path with which fluid is sucked out of the consumer. The valve has a housing which has a tank port, a pressure port for connecting to a pressure side of a pump, a suction port for connecting to a suction side of the pump, and a consumer port. The valve has at least one valve flap which is arranged within the housing and which can be moved between a first flap position for establishing the first throughflow path and a second flap position for establishing the second throughflow path. The housing has two parts on which are formed in each case at least two valve seats. The housing has a base part on which the tank port, the pressure port, the suction port and the consumer port are formed, and a cover part which has closed ducts. The closed ducts are connected to the associated valve seats.

Abstract: A microvalve, in particular for a micropump, is described, which includes a valve member which is adjustable between an open position and a closed position, in contact with a valve seat in its closed position. The valve seat is made of a polymer material. A micropump and a manufacturing method are also described.

Abstract: A chromium-iron alloy comprises in weight %, 1 to 3% C, 1 to 3% Si, up to 3% Ni, 25 to 35% Cr, 1.5 to 3% Mo, up to 2% W, 2.0 to 4.0% Nb, up to 3.0% V, up to 3.0% Ta, up to 1.2% B, up to 1% Mn and 43 to 64% Fe. In a preferred embodiment, the chromium-iron alloy comprises in weight %, 1.5 to 2.3% C, 1.6 to 2.3% Si, 0.2 to 2.2% Ni, 27 to 34% Cr, 1.7 to 2.5% Mo, 0.04 to 2% W, 2.2 to 3.6% Nb, up to 1% V, up to 3.0% Ta, up to 0.7% B, 0.1 to 0.6% Mn and 43 to 64% Fe. The chromium-iron alloy is useful for valve seat inserts for internal combustion engines such as diesel or natural gas engines.