Abstract: In accordance with various aspects of the present invention, methods and apparatuses for designing and configuring dissimilar material retention, specifically a valve plug assembly, are disclosed. The methods and apparatuses enable the application of a wider range of materials in a valve plug assembly than previous valve plug assemblies, and also increase the operational temperature range of the valve plug assembly. In an exemplary embodiment, a valve plug assembly comprises a plug head, a collet surrounding the plug head, a plug base adjacent to the collet, and a retainer surrounding the tapered outside surface of the collet and the plug base, where the plug head extends past the collet and the retainer. The valve plug assembly is configured to create an interference fit of the various components.

Abstract: Hot-isostatic-pressure (HIP) is used to bond a cemented carbide inlay (e.g., an inlay ring) on a metal substrate (e.g., a hull ring). For example, an inlay ring is made from a powdered metal inlay preform typically comprising at least one metal carbide and at least one nonvolatile cement. The inlay preform is compressed and sintered to make an inlay ring having a predetermined shape, the inlay ring having a modulus of elasticity substantially greater than that of a hull ring. An inlay ring and a hull ring are sealingly vacuum brazed together with at least one evacuated bonding area between them. HIP is applied to compress the hull ring against the inlay ring, thus fusing the hull ring and inlay ring in at least one evacuated bonding area. Following HIP, the inlay ring and hull ring form a fused assembly in which the inlay ring substantially retains its predetermined shape.

Abstract: A diaphragm for use in a valve assembly, comprising at least one sealing portion and a fixation portion, characterized in that the fixation portion and the at least one sealing portion are connected by a flexible portion.

Abstract: A high pressure storage and delivery system having a fail-safe vacuum actuated valve is provided. In particular, through the innovative design of the vacuum actuated check valve, the system can accommodate up to three times the volume of product in similar size cylinders.

Abstract: A direct touch type metal diaphragm valve, wherein durability of the valve, that is to say, the ensured number of continuous open/close operations of the valve, is substantially increased under conditions that an appropriate flow rate coefficient Cv is maintained, and changes of the afore-mentioned Cv value over time are mitigated by means of restricting the deformation of the valve seat over time. The afore-mentioned metal diaphragm is formed in a round, reverse-dish shape by laminating a plural number of thin stainless steel plates and a thin Nickel.Cobalt alloy plate, and its center part is bulged upward, and the maximum valve stroke of the valve is regulated to be 55% to 70% of the distance of the maximum bulge height ?h of the afore-mentioned metal diaphragm.

Abstract: A valve block includes at least a first connection and a second connection. Both connections are connected to each other inside the valve block to temporarily change flow paths in a coolant device and/or to fill the coolant device and/or empty the coolant device. The valve block may be made of a coolant and pressure-resistant plastic and may be manufactured by an injection molding method.

Abstract: The present disclosure provides a microfluidic valve with a liquid-film-core to open and close one or more dispensing orifices of an ejection nozzle of a microfluidic system, such as an inkjet printhead, to prevent nozzle-clogging. The microfluidic valve employs a non-volatile liquid to control ambient air exposure at a liquid-air interface. Particularly, the microfluidic valve utilizes a microfluidic driving mechanism, such as electrowetting principles or magnetic fields, to control movement of the non-volatile liquid in order to control the ambient air exposure at a liquid-air interface. The valve comprises a non-volatile liquid-film-core, a valve housing including a valve channel and a pair of aligned openings, and a valve control subsystem, whereas the liquid-film-core is movably confined within the valve channel, and the valve control subsystem controls movements of the liquid-film-core within the valve channel to Open and Close the aligned openings.

Abstract: A valve has a valve body provided on its inner peripheral surface with a seat ring, a stem arranged to extend in a direction substantially perpendicular to the axis of a flow passage defined in the valve body, and a valve element rotatably supported through a bush attached to the stem, and opens or closes the flow passage by pressing or separating the valve element against or from the seat ring in the valve body in accordance with the rotation of the valve element. The valve body is molded after the valve element, the seat ring, the stem, and the bush are placed in predetermined positions in a mold.

Abstract: A surface of a valve rod of an EGR valve is plated with chromium plating, and then the surface of the chrome plating is polished to the maximum height surface roughness of 1.0 ?m to 3.2 ?m.

Abstract: Provided is a valve gear in which corrosion due to a potential difference does not occur and which can reduce the corrosion occurrence even when loads due to microvibrations are given. The valve gear according to the present invention comprises a valve stem 6 and a valve bush 7 that slidably supports the valve stem 6. The valve stem 6 is formed from a forged part made of a Ni-based superalloy and the valve bush 7 is formed from a cast part made of a Ni-based superalloy. The preferable surface roughness of a sliding surface of the valve stem 6 in contact with the valve bush 7 and the preferable surface roughness of a sliding surface of the valve bush 7 in contact with the valve stem 6 is 100 ?m or less in units of Rz.

Abstract: A bonding means for electrically coupling a first component and a second component at an interface. The bonding means including at least one electrically conductive bonding puck positioned between the first component and the second component. The bonding puck being disposed within a recess formed in at least one of the first component and the second component. The at least one electrically conductive bonding puck providing electrical bonding between the first component and the second component and establishing electrical continuity therebetween.

Abstract: A valve seal for use with a valve having a valve element including a plurality of radiused corners. The valve element is rotatably mounted within a frame disposed in a flowbody. The valve seal including a plurality of curved portions in cooperative alignment with the radiused corners of the valve element. The valve seal being partially disposed within a mounting groove formed in an edge surface about a substantial portion of the valve element. A plurality of flexure joints are formed in the seal member and in spaced relation from the curved portions. The plurality of flexure joints providing spring loading of the seal relative to the frame when the valve element is in a closed position.

Abstract: A cryogenic valve includes a main body which has an opening, a bonnet which is coupled to the main body, a disc which opens or closes the opening, a stem which is placed through the bonnet, and a drive unit which actuates the disc and the stem. A first seat is provided at the position at which the disc comes into contact with the opening, and a second seat is provided at the position at which the disc comes into contact with the bonnet, so that either when the valve is closed or when the valve is completely open, fluid is prevented from being drawn into the bonnet, thus making it possible to replace a packing with a new one even when the system is in operation.

Abstract: An injector may include an injector valve needle which is coated with a diamond-like carbon (DLC), and a valve seat that is selectively contacted with the injector valve needle and is coated with a modula tungsten carbide carbon (modula WCC).

Abstract: A valve assembly includes a stem and a body having a passageway for receiving the stem. The diameter of at least an upper portion of the passageway is greater than a diameter of the stem assembly to form a stem space. A packing element is received around the stem assembly in the stem space, and a packing gland is configured to attach to the body and to engage the packing element. The packing gland is attached to the body and applies a compressive force at the packing element, causing the packing element to radially expand and thus substantially seal the packing element and the stem element at the stem space. The packing gland flexes when secured to the body and is biased toward its initial unflexed state to provide a substantially consistent compressive force at the packing element as the packing element deteriorates over time.

Abstract: A check valve (fluid on-off valve device) capable of attaining high sealability in either case where a differential pressure is high or low, comprises a valve body assembly (valve body) contacting and separating from a valve seat portion for communicating and blocking a fluid passage. The valve body assembly comprises a valve body, a low-pressure seal portion constituted out of soft material and a high-pressure seal portion constituted out of harder material than the low-pressure seal portion. In blocking a fluid passage, when a differential pressure between an upstream path and a downstream path in the fluid passage is relatively low, the low-pressure seal portion comes into close contact with a protrusion to block the fluid passage, while when the differential pressure is relatively high, the low-pressure seal portion is compressively deformed by the differential pressure and the high-pressure seal portion comes into close contact with the valve seat body, thus blocking the fluid passage.

Abstract: An electrolysis-resistant coupling assembly for a valve within a fluid line. A line flange within the line includes a first mating surface and a fluid passageway therethrough. A valve flange downstream from the line flange includes a second mating surface. The valve flange has an aperture passing therethrough with first and second bores forming a lip. A valve coupler has an upstream end provided with a coupler flange having a third bore. A substantially non-compressible, non-metallic captive ring is interposed between the lip, and the flange and body of the valve coupler. Bolts and nuts assemble the valve flange to the line flange with a gasket therebetween, compressing the lip against the captive ring and the coupler flange. The valve is either sweat fitted or threadably attached to the downstream end of the valve coupler. Various configurations for the valve flange, the captive ring, and the valve coupler are disclosed.

Abstract: A thermally compensated mounting flange 10 useful for mechanically attaching equipment to a device which can be operated at a relatively high temperature is disclosed, such as an actuator 32 to operate valve 12. The mounting flange 10 and valve 12 can be made of different materials with unequal thermal expansion coefficients. The mounting flange 10 has a flange portion 14 and one or more legs 16A,16B extending from the flange portion 14 to a distal end mechanically secured to the valve 12. At least one pin 36 can be disposed through an attachment bore 22,24,26 in a leg 16A,16B and into or through the body of valve 12. An open-ended slot 30 is formed from the distal end and terminates at an aperture 28 spaced from a periphery of a leg 16A,16B. Aperture 28 can conveniently serve as a sight hole for inspection of the top of valve 12.

Abstract: A thermostatic valve comprising a valve head and a flat, annular, elastomeric sealing element at the valve head, a valve spring mechanically biasing the valve member against a valve seat and a temperature-sensitive expansible element the valve member displacing the valve member against the valve spring, characterized by the valve head comprising at its circumference an annular groove, the flat annular sealing element being stamped out of an elastomer which swells in the presence of water, in particular an EPDM material, and exhibiting a thickness which is equal to or slightly less than the width of the annular groove.

Abstract: This invention relates to a rotary valve device for controlling and distributing flow of a fluid medium directly in response to the rotary motion of a motor shaft. Fluid medium is continuously supplied to a cavitated disk through a manifold by a pump source where the cavitated disk rotates at the same rotational speed as the motor shaft. The cavitated disk has a first void region in continuous fluid communication with the pump source and alternately communicates with cylinder conduits to drive a piston. A second void region in the cavitated disk is so dimensioned and proportioned to permit fluid medium to be alternately exhausted from the cylinder and to be distributed to exhaust conduits and then to the atmosphere.

Abstract: The present invention relates to a valve for liquid containers, which comprises a conduit for liquid passage having an inlet and an outlet, a closing member disposed in the conduit, which is movable between an open position and a closed position, and an actuator for driving the closing member. The conduit is made of a first chemically resistant thermoplastic material and the closing member is made of a second thermoplastic or thermosetting material. Particularly, all the surface of the closing member that faces the inlet in the closed position, is coated with a third thermoplastic material which is heat-sealed to said second material and has high chemical resistance.

Abstract: A flow control element comprises a cylindrical element body having a bore formed therethrough. The cylindrical element body may include inner and outer peripheral surfaces and define a plurality of tortuous flow passages which extend between the inner and outer peripheral surfaces. The flow control element is formed as a unitary structure wherein the flow passages are oriented along at least two axes. The flow control may be formed by direct to metal laser sintering wherein successive layers of powdered metallic material are solidified by applying laser energy to the selected portions until the flow element is formed as a unitary structure with a plurality of flow passages extending therethrough. The laser energy is selectively applied to the powdered metallic material according to a computer model of the flow control element.

Abstract: A plunger (45) and a piston (46) are displaceably held in a housing (104) for opening and closing a valve path (107) defined in the housing (104), and a single common seat block (44) provided for the plunger (45) and the piston (46) is fixed to the housing (104) and has seat portions (47) each formed from a soft material for respective of the plunger (45) and the piston (46) to be pressed thereon. This arrangement provides a valve device which is simplified in structure and can be manufactured with reduced man-hour.

Abstract: An inlet valve is partially coated with a protective coating to resist corrosion and gas impingement when used in an internal combustion engine. The inlet valve has a hard cladding that is shaped to function as a valve seat. The hard cladding forms an interface with the valve head body, which is typically made of a softer metallic material than the hard cladding. The protective coating is bonded to the inlet valve and covers the cladding-body interface. The protective coating is resistant to corrosion, wear from gas impingement, and can withstand the high temperatures reached in internal combustion engines. Internal engines incorporating the valves are more durable and less susceptible to catastrophic valve failure. A method for making the inlet valves generally includes masking a portion of the valve stem and the valve seat, applying a protective coating to cladding-body interface, and curing the protective coating or otherwise bonding the protective coating to the inlet valve.

Abstract: It is intended to provide a medical stopcock characterized by having a housing made of a polyarylene sulfide resin and a cock made of a polyolefin-based resin, which has such pressure-proofness as being usable in angiographic techniques, high chemical resistance (Lipiodol resistance) and tolerance to radiation sterilization, in particular, tolerance to electron beam sterilization.

Abstract: Control valve with profiled packing element for making bidirectional flow-through with asymmetric intensity possible in a flow area. The packing element (1) has a first surface which can be abutted against a second surface in the valve housing (2). The packing element (1) has a first position in which said first surface (3) and said second surface (4) abut against one another, and a second position in which said first surface (3) and said second surface (4) are distant from one another. At least one of the surfaces (3, 4) is provided with a damage (5) by means of which when said packing element (1) is in its first position a first cross-section of flow is ensured between said abutting first and second surfaces (3, 4), which is smaller than a second cross-section of flow ensured by said packing element (1) when it is in its second position.

Abstract: A multipart composite valve for an internal combustion engine, in which a valve shaft (2) and a valve plate (4) are embodied separately while being joined together in an overlapping area (6). The invention is characterized in that at least some parts of the valve shaft (2) are provided with an intermediate layer (8) in the overlapping area (6). Said intermediate layer (8) forms an integral joint with both the valve shaft (2) and the valve plate (4) in the form of a chemical bond, the valve plate (4) being cast onto the valve shaft (2).

Abstract: An electromechanically-controlled ceramic based proportional valve is disclosed. The apparatus may be manufactured with an accompanying ceramic pressure breakdown orifice pack. The apparatus is designed to utilize the wear-resistant properties of ceramic valve components to control the flow of high-pressure fluids using a servo-driven mechanical actuator. The apparatus is designed to control the closing of the poppet valve to prevent slamming of the poppet head into the poppet seat during closing, further preventing wear and tear on the apparatus components. The accompanying pressure breakdown pack is designed to systematically reduce high pressure and high velocity water flow through the device to allow the water to exit at a prescribed lower pressure and flow rate. The breakdown pack also prevents harmful cavitation in the valve assembly by handling the cavitation internally rather than allowing it to propagate itself through the entire valve assembly.

Abstract: A steam-sterilizable aerosol valve has a valve body of polymeric material such as polyphenylene sulfone (PPSU) having an HDT (heat deflection temperature) at 1.8 MPa stress in the range of 200-275° C. Such a valve has the ability to survive steam sterilization without significant degradation of properties or appearance.

Abstract: A valve for restricting and closing plastic tubing, comprising a base having a surface for holding a plastics tube, two side guides extending from the base, a top provided with a restriction member and means for raising and lowering the restriction member on to a seat. One of the side guides is pivotally connected to the base and connectable to the top. The top having a bifurcation to accept the guide, a seat being provided on the bifurcation to hold a head on the side guide. The valve can be placed round a plastics tube and the restriction member positioned to set the flow through the tube. To remove the valve from the tubing, depression of the top releases the head of the side guide from its seat opening the valve.

Abstract: A valve structure includes a valve opening diaphragm and a valve diaphragm. The valve opening diaphragm provides a central valve opening with a plurality of wave shaped projections at the circumference of the valve opening. The valve diaphragm stacks on the valve opening diaphragm and providing at least a pair of elongated circular grooves. The pair of circular grooves is symmetrically disposed with respect to the center of the valve diaphragm and an area enclosed by the pair of circular grooves covers the valve opening.

Abstract: A valve component may include a polyurethane coating electrocoated thereon. The polyurethane coating is a hard, smooth, and lubricious coating that facilitates low frictional engagement with one or more elastomeric seals. To make a valve component with such a coating, the valve component may be electrocoated in an emulsion comprising suspended polyurethane particles while being moved in a predetermined motion.

Abstract: A valve assembly is provided including an injection molded flow body having at least one inlet port, at least one outlet port, and a flow passage there between. The injection molded flow body is formed of a high performance engineering thermoplastic resin. A plurality of reinforcement fibers may be homogeneously suspended in the high performance engineering thermoplastic resin and provide increased strength and temperature capability for use in high temperature applications.

Abstract: A fuel system component is provided. The fuel system component may comprise a valve body having a substantially conical surface region including a first coating. The component may further include a valve seat having a first surface region with a substantially conical surface including a second coating. The coating of the valve seat is configured to engage at least a portion of the coating of the substantially conical surface region of the valve body.

Abstract: A rotary valve comprising sliding members for supplying treatment gas containing water vapor to a plurality of treatment processes is provided. The rotary valve comprises sliding members (1, 2; 4, 6), through which open flow passages (8, 9, 10), having sliding surfaces slidable to each other and a mechanical seal mechanism for switching the flow passages (8, 9, 10) while sealing fluid by preliminarily pressing the sliding surfaces, wherein the sliding surface of each sliding members (1, 2; 4, 6) is made of hydrophobic material (2, 4) different in hardness from the other.

Abstract: A control valve for a fluid flow circuit comprises a body that has a fluid inlet and at least two fluid outlets (20, 22, 24) and that defines an axisymmetric housing for a modulating member capable of rotating about an axis of rotation (XX) and adopting different angular positions to control the distribution of the fluid through the outlets. The body comprises a side wall (16) into which the fluid outlets open. The side wall (16) and/or the modulating member comprises sunken areas (EV) and non-sunken areas (CR), the sunken areas (EV) serving to reduce the surface area of the modulating member (26) in contact with the side wall (16).

Abstract: The present invention provides a vacuum thermal insulating valve that may be used at high temperature in gas supply systems or gas exhaust systems, and also may be made substantially small and compact in size owing to its excellent thermal insulating performance. With a vacuum thermal insulating valve comprising a valve equipped with a valve body and an actuator, and a vacuum thermal insulating box that houses the valve, the afore-mentioned vacuum thermal insulating box S is formed by a square-shaped lower vacuum jacket S5 having a cylinder-shaped vacuum thermal insulating pipe receiving part J on a side and with its upper face made open, and the square-shaped upper vacuum jackets S4, which is hermetically fitted to the lower vacuum jacket S5 and with its lower face made open.

Abstract: A solenoid-operated cutoff valve for use with fuel cells has a movable member disposed in a guide housing for displacement upon energization of a solenoid. When the movable member is displaced, a pilot valve is unseated from a pilot valve seat. A fluid in a communication chamber flows through a pilot passage into an output port. The communication chamber is divided into a first communication chamber and a second communication chamber by a diaphragm. Under a pressure difference developed between the first communication chamber and the second communication chamber, a main valve of a valve head is unseated from a valve seat of a valve housing, opening the solenoid-operated cutoff valve.

Abstract: A plastic aerosol valve with a plastic valve stem, plastic housing, plastic mounting cup, and plastic locking ring. The plastic valve is assembled into the mounting cup. The plastic housing is assembled into the plastic mounting cup by snap fittings. The plastic mounting cup has a peripheral portion that snap fits up into the plastic locking ring. The plastic locking ring has frangibly-connected upper and lower portions. The lower portion snap fits with the top of a plastic product bottle to mount the aerosol valve assembly on the bottle. The upper ring portion thereafter is telescoped downwardly over the lower ring portion to lock and retain the aerosol valve assembly on the pressurized bottle. The plastic mounting cup can be molded separately, or integrally with the plastic locking ring. A check valve may be contained in the valve stem.

Abstract: The present invention provides a valve which makes it possible to reduce the diameter of the vacuum exhaustion pipings for making the facility for the vacuum exhaustion system small, as a result lowering the costs, and making the vacuum exhaustion time short, and also which can prevent the corrosions, cloggings, and seal leakages inside the piping system caused by the accumulation of substances produced by the decomposition of the gas. Specifically, the aluminum passivation is applied on the piping parts, i.e. the valve and others, used in the vacuum exhaustion system to inhibit the gas decomposition caused by the temperature rise at the time of the baking so that components for the reduction in the diameter size in the vacuum exhaustion system are provided. The corrosions, cloggings and seat leakages caused by the gas decomposition are prevented.

Abstract: A valve assembly for controlling water flow to a water delivery device. The valve assembly includes a valve body and a valve cartridge sealingly received within the valve body.

Abstract: A control valve is disclosed having a passage formed therein defined by an inner surface, the control valve includes at least one enhanced surface, a liner, or a combination thereof to militate against ice formation thereon and adhesion of the ice thereto.

Abstract: A faucet includes a first valve plate comprising a base material and a strengthening layer provided above the base material. An amorphous diamond material is provided above the strengthening layer. The amorphous diamond material has a coefficient of friction that is lower than that of diamond-like carbon and has a hardness that is greater than that of diamond-like carbon.

Abstract: One aspect of the present invention includes a fluid control valve device having a valve portion and a bearing portion. The valve portion is constructed with a valve seat arranged within a valve housing and a valve body, which moves towards and away from the valve seat in an axial direction. The bearing portion is configured to accommodate a bearing and a seal. The bearing supports a valve shaft that extends together with the valve body. The seal is attached around a valve shaft in order to prevent fluid from entering the bearing portion. A surface of the valve shaft, at least a portion that slidably contacts the seal, may have a hydrophobic property. Peripheral grooves may be formed in an inner circumferential surface of the valve housing at a position proximal to the valve portion on an upstream side and/or a downstream side. The grooves open toward a side opposing to the valve seat in a flow direction.

Abstract: While ceramic materials possess properties that make them suitable for use in fuel system components, they tend to be susceptible to failure when exposed to tensile stresses. The retention system described herein helps to reduce the tensile stresses experienced by a retained member by providing a retained member with an engagement structure, a multi-piece retention ring that engages the engagement structure, a resilient member coupled to the retention ring, and a retainer coupled around at least a portion of the retention ring and resilient member and spaced apart from the retention ring and/or resilient member by a gap. The retained member, retention ring, resilient member, and retainer are configured so that the retention ring is moveable in an axial direction relative to the retained member and so that the movement of the retention ring acts to expand the resilient member against the bias provided by the resilient member.

Abstract: A piezoelectric microvalve employs a valve element formed of hermetically sealed and opposed plates flexed together by a cross axis piezoelectric element. Large flow modulation with small piezoelectric actuator displacement is obtained by perimeter augmentation of the valve seat which dramatically increases the change in valve flow area for small deflections.

Abstract: A tandem master cylinder (1) with central valves has ball-shaped valve members (25, 40) with leaf springs (26, 41) serving as valve springs. The ball-shaped valve members (25, 40) can be manufactured of a plastic material, coated with an elastomer. The size of the balls is preferably adjusted to the size of the pistons (4, 5) to allow a maximum flow while ensuring at the same time that the piston walls retain a thickness. The leaf springs (26, 41) have a bowl-shaped body (61), which is shaped like a partial sphere. To avoid an entrapment of brake fluid or a vacuum between the balls (25, 40) and the leaf springs (26, 41), respectively, a central hole (62) has been provided in the bowl-shaped body (61). The leaf springs (26, 41) are equipped with a plurality of tongue-shaped extremities (63) extending radially outward with end portions (64) bent toward the axial side on which the valve members (25, 40) are located.

Abstract: A power generation system valve stem comprising a nickel-based substrate and a WC-based coating thereon, wherein the WC based coating comprises WC particles in a matrix of Ni and/or Co wherein the average interfacial spacing between the WC particles is between 5 microns and about 20 microns on average.

Abstract: A valve component for a faucet includes a substrate, a first layer of material provided above the substrate in an amount sufficient to improve abrasion resistance of the substrate, and a second layer of material provided above the first layer of material. The second layer of material includes amorphous diamond having sp3 bonding of at least about 40%, a hardness of at least about 45 GPa, and an elastic modulus of at least about 400 GPa.

Abstract: The present disclosure is directed to a valve assembly comprising a housing and a valve mechanism. The housing includes a pair of support rings connected together with a set of legs. The valve mechanism is supported within the housing and includes an open position and a closed position. The valve mechanism is constructed and arranged such that when in the open position, fluid is allowed to flow through the valve mechanism into the housing and exit the housing between the legs. More than four legs extend between the first support ring and the second support ring, the legs arranged circumferentially such that the legs are substantially equally spaced around the housing.