Abstract: A bi-fold valve door and method for controlling aircraft cabin pressure are provided. The bi-fold valve door includes an aft door section and a forward door section, and only the forward door section is selectively rotated about one rotational axis to a position between a closed position and a full-open position, while the aft door section is maintained in its closed position. The forward door section is selectively rotated about the rotational axis to a full-open position to engage the aft door section, while the aft door section is maintained in its closed position. When the forward door section is in the full-open position, the aft door section and the forward door section are simultaneously rotated about another rotational axis.

Abstract: A turbocharger system includes first and second turbines arranged such that exhaust gas passes through the first turbine then the second turbine. A bypass channel is configured such that exhaust gas entering the channel passes only through the second turbine. A valve positioned in the bypass channel regulates the flow of gas therethrough. The valve accelerates a stream of gas and focuses the stream toward the second turbine such that a large part of the added velocity of the stream is preserved as it enters the second turbine. Operation of the valve may be controlled so as to maintain the valve in a closed position while exhaust gas pressure above the first turbine pressure is below a first threshold, to progressively open the valve as the pressure increases above the first threshold, and to maintain the valve in a full-open position while the pressure is above a second threshold.

Abstract: A shutoff valve, e.g., an engine shutoff valve, is provided which includes a valve body having a fluid, e.g., air, passage and a disc assembly. The disc assembly is pivotable within the fluid passage from an open position to provide for free flow of fluid through the passage, to a closed position to provide a substantially closed off the fluid passage. The disc assembly includes a front disc, a rear disc, and a seal, e.g., a spring energized PTFE seal, disposed between the front disc and the rear disc. The front disc is permanently secured, e.g., welded, soldered or brazed, to the rear disc such that the seal is captured between the front disc and the rear disc.

Abstract: Valve assembly and method in which a valve member is connected to an elongated lever arm for controlling communication between two chambers in an internal combustion engine. The valve assembly is disposed at least partially within one of the chambers, and the valve member is moved between open and closed by an actuator connected to the lever arm. In some disclosed embodiments, a pilot valve is opened to equalize pressure on both sides of the valve member prior to moving the valve member toward the open position. In others, where a piston in an expansion cylinder is driven by hot, expanding gases from a separate combustion chamber, the exhaust valve is closed before the piston has completed its exhaust stroke, and pressure is allowed to build up in the expansion cylinder to a level corresponding to the pressure in the combustion chamber before the valve member is moved toward the open position.

Abstract: A top entry check valve including a valve body with an access port and clapper assembly with a compressible hanger positioned in alignment with the access port. The compressible hanger comprises a plate member stamped from a sheet of metal having at least one dimple formed in one of the upper side and the lower side and a corresponding protuberance formed on an opposing side so as to define a compressible area. A clapper is connected to the hanger so that the clapper is movable between a closed position and an open position. A closure member has an abutment surface engaging the hanger so that the hanger body is compressed between the closure member and the valve body.

Abstract: A triple offset butterfly valve includes a valve body defining a valve orifice and a valve member rotatably mounted in the valve orifice. The valve member includes a disc element detachably mounted to a mounting plate; the valve member being mounted to a rotatable axle which extends between the disc element and mounting plane thereof. The valve body has an annular valve seat against which the disc element of the valve member seals when the valve is closed. In use, when the valve components become worn, the disc element of the valve member can easily be removed as a complete unit and replaced. In this manner, the need for a removable seal on the valve member is avoided, which reduces the number of potential leak paths as compared to known butterfly valves.

Abstract: Flapper valve assemblies are provided. One flapper valve assembly includes a flowbody, a flapper valve element, and an elongated stiffening rib formed in the flowbody. The flowbody includes a generally flat plate portion, and an arcuate portion adjacent the generally flat plate portion. The flapper valve element is hingedly coupled to the flowbody proximate the generally flat plate portion. The elongated stiffening rib extends from the generally flat plate portion to the arcuate portion to distribute mechanical stress and to reduce deflection of the flowbody during pressure loading.

Abstract: An improved hemi-wedge type valve is disclosed that has upstream and downstream sealing surfaces that cooperate with opposed surfaces on the hemi-wedge valve member. This results in improved sealing and less leakage, at both high and low pressures.

Abstract: In a control valve (3) for a medical suction device (1), it is provided that a coupling location (4) of the control valve (3) is includes a guide (8) which, when the control valve (3) is being plugged or fitted into a coupling seat (5) of the medical suction device (1), cooperates with a mating guide piece (9) of the coupling seat (5) for axial guiding and which, in a position turned away from the plugging-in orientation, cooperates with the coupling seat (5) for axially locking the control valve (3) on the coupling seat (5).

Abstract: A valve includes a first valve portion made from a first material, the first valve portion including a body, a door, and an inner hinge pivotably connecting the body to the door, the body including a first opening at a first end and a second opening at a second end opposite the first end, and a circumferential recess disposed in the second end, wherein the inner hinge pivotably connects the door to the body at the first end and a second valve portion made from a second material, the second valve portion including an inner seal disposed in the circumferential recess, the inner seal including a circumferential ridge extending inwardly, the second valve portion further including a door seal disposed on the first end of the body.

Abstract: A valve 14 that includes a valve seat 20 and a flap 22 that has a surface 57 that has been ablated. Through use of an ablated flap, the flap characteristics can be better fashioned to achieve desired valve performance. The valve flap can be fashioned to remain closed under any orientation but also to open with minimal force or pressure from the flow stream. A valve having these qualities provides a valve can operate more efficiently, which may be particularly beneficial when used one respiratory masks where the valve is powered by the wearer.

Abstract: The invention relates to a turbocharger (1) comprising a compressor (2), a turbine connected to the compressor (2) by means of a shaft (3) and provided with an exhaust inlet (5) and an exhaust outlet (7), and a bypass line (6) which branches off from the exhaust inlet (5), bypassing the turbine, and leads to the exhaust outlet in which a boost-pressure regulating flap is arranged, said regulating flap comprising a flap plate (13) which is connected to a flap shaft (14) by means of a connecting device (12).

Abstract: The present invention relates to a water-stop plug of the flush valve including a connecting sheet, a fixing component and a casing body. The connecting sheet includes a ring part and a pair of hook-hanging parts, and users are capable of choosing the ring part or the pair of hook-hanging parts to fix the water-stop plug to the overflow tube according to the original overflow tube structure, and thereby being able to replace different types of water-stop plugs of flush valves.

Abstract: An assembly for culturing cells includes a housing defining a reservoir for containing cell culture media and an opening in fluid communication with the reservoir. The cell culture assembly further includes a filter valve assembly configured to sealingly engage the opening. The filter valve assembly includes a flexible membrane, a contiguous side wall, an end wall, and a microbial filter. The end wall has an opening and extends across one end of the side wall to form a major cavity within the side wall and the end wall. The flexible membrane has a slit spanning the membrane and is disposable within the major cavity such that the membrane sealingly divides the major cavity into (i) a chamber formed between the end wall and the membrane and (ii) a minor cavity formed by the membrane and a portion of the side wall. The minor cavity is in fluid communication with the reservoir.

Abstract: A swing valve includes a body having an inner surface defining an opening, a plate positioned substantially within the opening of the body, and a pivot rod coupled to the body and the plate. The pivot rod defines a pivot axis. The plate is pivotable about the pivot axis relative to the body between an open position and a closed position. The swing valve also includes a locking mechanism coupled to the plate. The locking mechanism includes a member that is movable relative to the plate between a first position, in which the locking mechanism engages the body to lock the plate in the closed position, and a second position, in which the locking mechanism disengages the body to allow movement of the plate relative to the body.

Abstract: An EGR valve assembly is provided for an Internal Combustion Engine. The valve assembly includes, but is not limited to a duct having an inlet and an outlet. A portion of the duct is configured with an open section that defines a seat for a valve housing, the valve housing having a passage that leads into the duct and a valve flap for opening and closing the passage, and an engaging portion configured to seal the open section of the duct.

Abstract: A relief valve in a turbomachine is disclosed. The valve includes a gate designed to be mounted so as to pivot about a shaft for the opening and closing of an orifice for the passage of air, a seal, and an attachment device for attaching the seal to the peripheral edge of the gate. The gate and the attachment device are made of a plastic and formed of a single piece or secured to one another by welding or bonding.

Abstract: A fluid chamber couples cylindrical input and output lines. The chamber has a closed lower end and an open upper end. A closure plate covers the upper end. The plate has a primary and secondary slots. A finger assembly has primary and secondary fingers. The fingers extend through the slots with upper ends of the fingers above the chamber and lower ends within the chamber. A block, fabricated of elastomeric material, couples the fingers at intermediate extents of the fingers. The block is positioned upon the closure plate. The elastomeric material covers the lower ends of the fingers. An aperture has a spacer. The aperture is formed in the lower end of the primary finger in axial alignment with the output line. A drive mechanism moves the upper ends of the fingers to pivot the lower ends of the fingers.

Abstract: A butterfly valve having a valve body, a butterfly shaft, a butterfly plate, and a sleeve insert is provided. The valve body is made of a first material and the sleeve insert is made of a second material. The butterfly shaft is in the valve body for rotation about a first axis. The butterfly plate is in the valve body and secured to the butterfly shaft so that rotation of the butterfly shaft causes the butterfly plate to rotate about a second axis through a travel path between a closed position and an open position. The sleeve insert is in the valve body at least in a region of the travel path between the valve body and the butterfly plate.

Abstract: A lower sealing valve unit for a charging system of a shaft furnace includes a housing having a pair of inlets and at least one outlet; a valve seat associated with each inlet; and a flap associated with each valve seat and adapted for, in a closed position, engaging the valve seat to sealingly close the inlet, each flap being supported by a pivotable shaft allowing displacement between the closed position and an open position off the associated valve seat, where a common structure, mounted to one side of the housing, includes a pair of drive mechanisms, each connected to one of the pivotable shafts for independent actuation thereof, the shafts passing coaxially though the housing side and being supported by the common structure.

Abstract: The present invention provides an air intake valve for an aircraft and a method for the production of an air intake valve. The air intake valve has an opening region for letting ambient air through into a fuselage inner region of the aircraft and a flap for opening and closing the opening region, the opening region and the flap each having a shape which is capable of forming air vortices on edges of the opening region when ambient air flows through the air intake valve.

Abstract: A lock valve is adapted for locking a process chamber. The lock valve includes a valve flap adapted for sealing an aperture of the process chamber where a substrate to be processed may be inserted or ejected. A cooling unit is adapted for cooling the valve flap by means of a cooling fluid. At least one valve flap hinge is adapted for connecting the process chamber with the valve flap. The valve flap hinge furthermore includes at least one pipe in fluid communication with the cooling unit of the valve flap.

Abstract: Embodiments of a flapper valve assembly are provided. In one embodiment, the flapper valve assembly includes a flowbody, a flapper valve element, and an elongated stiffening rib formed in the flowbody. The flowbody includes a generally flat plate portion, and an arcuate portion adjacent the generally flat plate portion. The flapper valve element is hingedly coupled to the flowbody proximate the generally flat plate portion. The elongated stiffening rib extends from the generally flat plate portion to the arcuate portion to distribute mechanical stress and to reduce deflection of the flowbody during pressure loading.

Abstract: A flap transfer valve is disclosed. An elongated first opening can be closed by an elongated valve closure beam, which can be pivoted via a pivoting bearing between a closed and open position. A shaft can be rotated by a drive and is operatively connected to the valve closure beam such that rotation of the shaft causes the valve closure beam to pivot. The pivoting bearing is formed by at least three bearing elements which are distributed at a distance from one another along the shaft axis in the valve housing, and on which the valve closure beam and the shaft are mounted. The shaft axis is at a distance from the pivoting axis. First arms are arranged on the shaft to provide a force to the rear face of the valve closure beam to pivot the valve closure beam.

Abstract: A flap transfer valve is disclosed. An elongated first opening can be closed by an elongated valve closure beam between a closed position and an open position. A shaft can be rotated about a shaft axis by a drive and is operatively connected to the valve closure beam to cause the valve closure beam to pivot. The valve closure beam, the pivoting bearing and the shaft are arranged on a valve cover in a gas-tight valve housing. The shaft, the pivoting bearing and the valve closure beam can be decoupled from the valve housing. The pivoting bearing is formed by at least three bearing elements which are distributed at a distance from one another along the shaft axis in the valve housing, and on which the valve closure beam and the shaft are mounted. The shaft axis is at a distance from the pivoting axis.

Abstract: A valve includes a first valve portion made from a first material, the first valve portion including a body, a door, and an inner hinge pivotably connecting the body to the door, the body including a first opening at a first end and a second opening at a second end opposite the first end, and a circumferential recess disposed in the second end, wherein the inner hinge pivotably connects the door to the body at the first end and a second valve portion made from a second material, the second valve portion including an inner seal disposed in the circumferential recess, the inner seal including a circumferential ridge extending inwardly, the second valve portion further including a door seal disposed on the first end of the body.

Abstract: A device and method for providing portable biological testing capabilities free from biological contamination from an environment outside the device are provided. The device includes a portable housing. The device further includes a volume surrounded by the housing and sealed against passage of biological materials between the volume and the environment outside the device. The device further includes a culture medium within the volume. The device further includes one or more ports configured to provide access to the volume while avoiding biological contamination of the volume. The device further includes a valve in fluidic communication with the volume and the environment. The valve has an open state in which the valve allows gas to flow from within the volume to the environment outside the device and a closed state in which the valve inhibits gas from flowing between the volume and the environment.

Abstract: A valve includes a first valve portion made from a first material, the first valve portion including a body, a door, and an inner hinge pivotably connecting the body to the door, the body including a first opening at a first end and a second opening at a second end opposite the first end, and a circumferential recess disposed in the second end, wherein the inner hinge pivotably connects the door to the body at the first end and a second valve portion made from a second material, the second valve portion including an inner seal disposed in the circumferential recess, the inner seal including a circumferential ridge extending inwardly, the second valve portion further including a door seal disposed on the first end of the body.

Abstract: A valve assembly (10) comprises a conduit having a throughbore (19) and defining a longitudinal axis, a sealing member (20) that is moveable between an open configuration in which the throughbore (19) of the conduit is open, and a sealing configuration in which the sealing member (20) is arranged to substantially obturate the throughbore of the conduit, wherein in the sealing configuration, the sealing member (20) seals the throughbore (19) along a sealing line at least a part of which is angled relative to a direction perpendicular to the axis of the throughbore (19).

Abstract: A configurable control valve for use with air brake systems is provided. This control valve includes: a first or top body portion, a second or bottom body portion, and a connector for attaching the first body portion to the second body portion. The first body portion may include an actuator or handle having either a linear translation a rotational translation, and the second body portion may include either horizontal or vertical port configurations. The connector cooperates with the first body portion and the second body portion to provide complete 360° lateral rotation of the body portions relative to one another.

Abstract: A downhole valve comprises a body defining a through bore and a valve member for location in the body and movable between an open position and a closed position. The valve has a first configuration in which the valve member is normally closed, and will hold a pressure differential in a first direction, and a second configuration in which the valve member is closed and will maintain a pressure differential in the first direction and also in an opposite second direction and a third configuration in which the valve member is locked in the open position until it is deliberately closed.

Abstract: The present invention relates to a miniature valve, which includes a valve body comprising an inflow channel, an outflow channel and a liquid chamber, and a close assembly comprising a driver, a rocker and a valve film. The close assembly connects to the valve body and is configured to selectively close the inflow channel and the outflow channel. The rocker can be driven by the driver to move, so that the movement thereof acts on the valve film and makes the valve film selectively close the channel. The rocker and the valve film are separate components. The valve film, an elastic film locating in the liquid chamber, has a size configured to cover the inflow channel and the outflow channel. The miniature valve according to the present invention doesn't have interior dead area and has a slight effect on liquid fluctuation when switching channels.

Abstract: A plug valve having an entry region, a chamber, and an outlet region, each with a flow area that is equal to or greater than the flow area of, for example, a standard wall ANSI B 36.10 (M) pipe connected to the inlet and outlet flanges of the valve. The valve's plug has a cylindrical front sealing face and a planar rear face. The axis of the sealing face is parallel to, but off-set from the axis of the plug. When the valve is fully open the planar rear face allows unimpeded flow through the chamber and substantially reduces friction to the flow. The valve's seat is cylindrical for mating with the cylindrical front sealing face of the plug. The seat has a rectangular outline shape.

Abstract: Disclosed is a valve comprising a body, which has a fluid inlet port and a fluid outlet port, a flow path formed therein communicated with the fluid inlet port and the fluid outlet port, and a valve seat formed in the flow path; and a valve body, which is attached to or detached from the valve seat by pivotal or vertical motion, thereby closing or opening the flow path; wherein at least the body is made of a polyphenylene ether-based resin composition containing a polyphenylene ether-based resin and a polystyrene-based resin as essential components. Another feature is that the polyphenylene ether-based resin composition has a tensile strength of 20 MPa or more and a tensile elastic modulus of 1,000 MPa or more under an atmosphere at 95° C.

Abstract: A valve system includes a valve body arranged in a valve housing and actuatable via a shape-memory element that is movable from an undeformed rest state to a tension deformed state and is again transferred to the rest state. The valve system is improved by a force deflecting device that enables the shape-memory element to actuate the valve body exclusively during the transfer thereof to the tension or rest state.

Abstract: A damper device may include a frame provided with an opening part, a baffle turnably supported on the frame, and a drive unit for turnably driving the baffle to open and close the opening part. The drive unit may include an output member whose tip end side is provided with an engagement part with the baffle and which is linearly advanced and retreated to and from the baffle to turnably drive the baffle. Further, the damper device includes a wall part provided between the driving part and the baffle and formed with an output hole part through which the output member is penetrated. The engagement part is located apart from a first moving extended axis which is formed by movement of the output member penetrating through the output hole part.

Abstract: A damper device may include a frame, a baffle turnably supported on the frame, a drive unit for turnably driving the baffle, a first and a second turnable support parts for supporting the baffle on the frame, and a mechanical connecting part between the drive unit and the baffle which is structured at a position apart from a turning center axial line of the baffle. The first and second turnable support parts are structured by using a shaft part made of resin which is formed in one of the baffle and the frame, and a shaft hole which is formed in the other of the baffle and the frame. A passage through which cold air is passed is opened and closed by the baffle.

Abstract: A damper device may include a frame, a baffle turnably supported on the frame for opening and closing a passage through which fluid is passed, and a drive unit for turnably driving the baffle. The drive unit may include an output member whose tip end side structures a slide mechanism together with the baffle, and a driving part which causes the output member to linearly advance and retreat to and from the baffle. The slide mechanism includes a groove formed in one of a tip end side of the output member and the baffle so that the groove is extended to move the baffle, and a slider part provided in the other so that the slider part is fitted into the groove, and the groove is formed in which at least one of both end portions of the groove is formed in an open end.

Abstract: A damper assembly exploiting a crankshaft to induce displacement of a damper means from one position to another.

Abstract: The valve sealing system for a reagent package includes an annular cylindrical gasket seated in a channel formed in the package. A rocker valve on the package pivots relative to the annular cylindrical gasket which surrounds an opening to the chamber of the reagent package. The annular channel includes a radially inner peripheral channel sidewall, a radially outer peripheral channel sidewall, and a bottom portion. An inclined peripheral wall portion of the channel intersects one of the channel sidewalls at an obtuse angle and the bottom portion of the channel. When the rocker valve is in a valve closed position it engages the annular cylindrical gasket to provide a substantially leak-tight seal.

Abstract: A gas valve apparatus is provided. A primary valve includes a flapper nozzle valve and first and second outputs. A secondary valve includes a housing having first and second inputs coupled to the first and second outputs of the primary valve, first and second seats coupled to the first and second inputs, first and second nozzles coupled to the first and second seats, and a moveable element configured for alternatively sealing the first and second nozzles as the moving element comes into contact with the first and second seats.

Abstract: Air bleed device for cooling components in a turbine engine, including an annular conduit (18) having a radially internal portion swept by an airflow (22) and which comprises at least one air inlet orifice (20) formed in an upstream radial wall (38) of the conduit (18), a flap valve (40) for controlling the airflow entering through the orifice (20) and of which the flapper (41) includes a plate (42) applied against the wall (38) and capable of being moved by sliding on said wall (38) by a maneuvering member (50) mobile in translation parallel to the wall (38) between a position in which the plate (42) closes off the orifice (20) and a position in which the plate (42) opens said orifice.

Abstract: A throttling valve assembly has an outer housing that is sealed. An actuator is connected to a pressure balanced shaft that extends into the housing to operate a plurality of linkages that can rotate blades in tandem. With the surrounding housing sealed, the shaft penetrations of the blade support shafts no longer need seals or a purge system to supply process gas during times of reduced pressure in situations with the blades nearly closed. A pressure equalization system has balance passages internal to the housing to allow flow from higher pressure zones to lower pressure zone of the process gas so as to avoid creation of a condition that can draw air into any zones of reduced pressure in the housing.

Abstract: Apparatus and methods for selectively and safely reversing flow in coiled tubing used for wellbore cleanouts are disclosed. One apparatus includes a section of coiled tubing having a main flow channel, at least two flow-preventing valves in the section of coiled tubing, each adapted to close the main flow channel upon attempted flow reversal; and at least one actuator adapted to deter closing of the flow-preventing valves. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: A flow control device in which a flapper is continuously biased to the closed position by a leaf spring that may have a plurality of fingers. The same valve includes a shutoff mechanism allowing the user to adjust forward flow through the valve or shut it off entirely. The leaf spring is made to include polyoxymethylene.

Abstract: The invention provides a valve assembly comprising a conduit with a bore 1b for passage of fluid therethrough. The valve assembly also comprises a sealing member that is movable within the conduit to open and close the bore. The seal assembly has a valve seat on which the sealing member seals when the bore is closed, and wherein the valve seat is movable within the conduit. The invention also provides a valve assembly comprising a sealing member, a first valve seat for the sealing member, and a second valve seat for the sealing member. The valve assemblies can be resettable. The invention further provides a flapper valve assembly wherein the flapper is pivotable through more than 90° and a bi-directional flapper valve assembly.

Abstract: A drain valve for a dishwasher and associated apparatus and method are provided. A housing receives fluid through an inlet channel and channels the fluid toward an outlet channel extending from an outlet port defined by the housing. A sealing member is disposed within the housing and is capable of forming a sealing engagement with the outlet port. A cradle member disposed within the housing is configured to receive and partially constrain freedom of movement of the sealing member. The cradle member is movable between a valve closed position, where fluid flow toward the outlet channel urges the sealing member into sealing engagement with the outlet port to close the drain valve, and a valve open position, where fluid flow is allowed between the inlet channel and the outlet channel, through the housing, without the sealing member engaging the outlet port.

Abstract: A flapper flush valve assembly includes a pair of laterally movable mounting arms which may be adjusted to vary a width therebetween to accommodate overflow tubes of different sizes. The flapper valve assembly is coupled to pivot members connected to an overflow tube. Mounting ears on the pivot members may include projections to provide spacing between the rotating mounting arms and adjacent sidewall of a toilet tank, thereby preventing jams.

Abstract: An improved flapper valve is disclosed comprising a housing, a flapper pivotally engaged to the housing, and an actuator slidingly engaged in the housing and adapted to make initial contact with the flapper at a seat end. The seat end is an area surrounding a point on a flapper bottom surface that is furthest from the location of pivotal engagement of the flapper and the housing but not in contact with the housing. The flapper closes at an acute angle to the longitudinal axis of the housing. The actuator is hollow and the interior of the actuator forms a through bore. In the closed position the flapper prevents fluid from the passing through the bore.

Abstract: A valve device includes a housing body having a fluidic chamber which has at least one valve seat and a valve control member. The member includes a rigid frame having first and second opposed surfaces and being shaped with recesses, at least one of the recesses extending between the surfaces, a rigid actuating member and a flexible diaphragm on the first surface which is connected with the frame and actuating member by injection molding. The recesses are filled with, and sealing contours on the second surface are formed of, the diaphragm material. At least one valve body is formed by a section of the actuating member and a section of the diaphragm surrounding the actuating member. The valve control member is joined with the housing body so that the diaphragm closes and seals the fluidic chamber and the valve body is opposite the valve seat.