Abstract: The invention relates to a valve (2) for controlling a passage of particles from a first region (6) to a second region (7), wherein the valve (2) comprises a valve material (4) having a modifiable degree of penetrability and a valve region (16) comprising the valve material (4), wherein the valve region (16) and the valve material (4) are adapted such that the particles have to penetrate the valve material (4) if the particles pass the valve (2) for being transferred from the first region (6) to the second region (7). The degree of opening of the valve (2) can easily be controlled by modifying the degree of penetrability of the valve material (4), for example, by modifying the temperature of the valve material (4). Moreover, by penetrating the valve material (4) the particles can be separated from other elements like a fluid containing the particles.

Abstract: A valve includes a rotor and a stator. The rotor and the stator each have seal surfaces for contacting and sliding against one another during operation of the valve. Either or both of the rotor and the stator have a seal-surface coating formed by depositing an at least partially amorphous interlayer on a substrate and depositing a surface layer, including diamond-like carbon, the interlayer. The surface layer requires no mechanical polishing.

Abstract: A flow control device for automatically controlling the flow of a fluid at a predetermined rate that is capable of taking measurements of the pressure of the fluid within the device while the device is functioning and that is capable of real-time adjustment of the flow rate is provided. Said device includes a casing having a casing outlet, a piston having a piston inlet and an edge, wherein said piston interfaces with the casing in a manner such that the edge is cooperable with the casing outlet to control the flow of fluid through the device. A biasing member, such as a spring, for biasing the casing with the piston is further included, as is a sensor, such as a pressure transducer, for measuring the pressure within the interior of the casing.

Abstract: A prosthetic valve implantable by catheter without surgery includes a frame with an abluminal surface extending between a proximal end of the frame and a distal end of the frame, and a single layer of a biocompatible membrane material mounted to the abluminal surface of the frame. The single layer of biocompatible membrane is located such that an interior surface of the membrane sheet extends between the proximal end of the frame and the distal end of the frame, and resides radially exterior the abluminal surface of the frame. In at least one embodiment, the disposition of membrane sheet at all points of attachment is entirely exterior/abluminal to the frame, such that no part of the abluminal surface of the membrane sheet contacts the frame.

Abstract: In an example, an apparatus, such as a microfluidic assembly, can include or can include using a channel including a valve seat, a valve film configured to adjust position with respect to the valve seat, and a first electrode configured to actuate the valve film electrostatically to adjust the position of the valve film to control a flow of a fluid in the channel laterally across the valve seat, the flow in a direction substantially parallel to the film.

Abstract: A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.

Abstract: A nozzle center body includes a unitary, one-piece, elongated tubular member having a forward end formed with a radially outwardly extending mounting flange; an aft end formed with a plurality of radially outwardly extending swirler vanes; and, an intermediate region, located axially between the forward and aft ends, formed with an inlet flow conditioner including an annular plate provided with plural, circumferentially-spaced flow openings therein. A related method of forming the nozzle center body by casting is also disclosed.

Abstract: A hub for a sheath, catheter, or other tubular device includes a first hub portion including a first hub lumen sized for receiving a medical device therethrough, and a second hub portion including a second hub lumen, the second hub portion coupled to the first hub portion such that the first and second hub lumens are aligned with one another and the first and second hub portions are spaced apart from one another to define a gap. A valve is secured within the gap between the first and second hub portions that includes a valve passage therethrough, e.g., for accommodating receiving a medical device through the first and second hub lumens into the tubular device, while providing a substantially fluid tight seal. For example, the valve passage may include a bore extending partially from a first end of the valve towards a second end of the valve, and a slit that extends from the end of the bore to the second end of the valve.

Abstract: A diaphragm sealed flow cavity comprises a first body comprising a support surface, a diaphragm comprising an outer portion that is joined by a weld to the first body, a clamped portion, and an inner portion that is movable along an axis, with the clamped portion of the diaphragm being compressed between the bearing surface and the support surface. The diaphragm sealed flow cavity may include a cylindrical body having a crimped portion for joining the cylindrical body to the first body. The diaphragm sealed flow cavity may also include a member that applies a live load to the clamped portion of the diaphragm. In the exemplary embodiments, the diaphragm sealed flow cavity may be realized as part of a diaphragm flow control valve having a valve body, diaphragm and a housing.

Abstract: The invention provides a valve comprising a tube for guiding movement of a plunger, a solenoid which can be arranged about the tube, and a yoke which can be positioned in an operational position relative to the tube and relative to the solenoid so that it provides a magnetic path between the solenoid and portions of the tube. The yoke engages the tube and thereby prevents removal of the solenoid from tube. The invention thereby provides a very simple valve design with a low amount of components. The invention further provides a method of making a valve including fixing a solenoid to a tube by use of a yoke which engages the tube.

Abstract: A check valve position indicator assembly is disclosed including an indicator housing, an indicator shaft rotably disposed in the indicator housing, an indicator arm attached to the shaft, a rod attached to the shaft, a mounting bracket, an indicia member attached to the mounting bracket, and at least one fastener attaching the indicator housing with the mounting bracket. In some embodiments, a seal is included along the bottom of the indicator housing.

Abstract: A passage block formed with a passage connectable to a fluid control device comprises a first block member formed with a plurality of first-coupling-face apertures, a second block member formed with a plurality of second-coupling-face apertures in correspondence with the first-bonding-apertures, a first passage-end contact portion formed around each of the first-coupling-face apertures, a second passage-end contact portion formed around each of the second-coupling-face apertures, and a passage-end contact section provided in such a manner that a lower surface of the first block member and an upper surface of the second block member are arranged to face each other so that the first and second passage-end contact portions contact with each other, and the first and second block members are heated under pressure to diffusion-bond the first and second passage-end contact portions to each other.

Abstract: A tapered rotary feed valve is manufactured or refurbished for use in feeding materials into a high temperature environment, so as to reduce the time and expense of break-in operation, by shaping the tapered bore of the valve body at ambient temperature to have greater clearance around the rotor in a sector of the valve body that is cooler when the valve is at stable operating temperature. As a result, when the valve first reaches operating temperature after being manufactured or refurbished the rotor and the bore of the valve body nearly fit and can quickly wear in to fit each other closely.

Abstract: A replacement heart valve device usable in a medical procedure in relation in heart valve replacement of a patient. In one embodiment, the replacement heart valve device includes a heart valve holder or conduit holder formed in the form of a cylindrical tube having a longitudinal cut substantially extending from one end to the other end of the cylindrical tube, and a conduit formed with a tubular segment of an elastic material. The conduit is mountable onto the heart valve holder or conduit holder or self-expanding stent. In one embodiment, at least a portion of the conduit is formed with a single layer of the elastic material. In another embodiment, at least a portion of the conduit is formed with two layers of the elastic material.

Abstract: In a variable valve actuation apparatus with a speed reducer between a timing sprocket and a camshaft for changing a phase of the camshaft relative to the sprocket, while reducing normal-rotation/reverse-rotation of an electric motor, the speed reducer includes an eccentric rotation member connected to an output shaft of the motor, an annular member connected to the sprocket, a plurality of rollers installed between an inner toothed portion of the annular member and an outer peripheral surface of the eccentric rotation member, and a cage connected to the camshaft for circumferentially partitioning the respective rollers, while permitting a radial displacement of each roller. Depending on a dimension of a clearance space between the eccentric rotation member and the annular member, a suitable one of a plurality of roller sets, each having a different outside diameter, is selected, and then the selected rollers are installed.

Abstract: A micro-machined temperature dependent one-shot valve is provided which has an operation temperature adjustable readily, causing no leakage below the operation temperature even at a high pressure difference, being useful both in a liquid environment and in a gas environment, and being miniaturizable. The micro-machined temperature dependent one-shot valve comprises a silicon substrate 100, a channel 101 penetrating the entire thickness of the silicon substrate, and a low melting point metal member 101 deposited on one face of the silicon substrate to obstruct the channel.

Abstract: An article of manufacture includes a first rotor having a first flow-through area that is more than 50% of a total first rotor flow area and a first ridged arc member, and a second rotor having a second flow-through area that is more than 50% of a total second rotor flow area and a second ridged arc member. The article further includes an upstream stator and a downstream stator, each stator having a co-extensive stator flow-through area and a co-extensive structural area. The article includes an actuator having an engagement gear between the ridged arc members, where a turn of the engagement gear moves the ridged arc members in opposing directions. The first rotor and second rotor are phased to be at a maximum closed at a first position of the engagement gear and a maximum open at a second position of the engagement gear.

Abstract: Embodiments of an aircraft valve assembly are provided for use in conjunction with a selected type of clamp having multiple segments separated by a predetermined gap spacing. In one embodiment, the aircraft valve assembly includes a flowbody having a ported end portion and a flow passage in which a valve element is movably mounted. An array of baulking tabs is mounted around the ported end portion at predetermined intervals corresponding to the predetermined gap spacing to substantially limit the type of clamps installable around the ported end portion to the selected type of clamp.

Abstract: A device is described for mechanically coupling an actuator to a valve which is adjustable by a plunger that is displaceable along a z-axis. The device has (a) a retaining element which can be mounted on a connecting chassis of the actuator and which is embodied for engaging on two opposite sides of a connection piece of a valve body in a recess incorporated in the connection piece, and (b) a clamping device which is disposed on a section of the retaining element and which is embodied in such a way that when the clamping device is actuated the section of the retaining element is displaced parallel to the z-axis relative to the connecting chassis such that the connecting chassis bears against the connection piece. An actuator having a coupling device of said kind and a method for mechanically coupling an actuator to a valve are also described.

Abstract: In one aspect, a passive flow control device for controlling flow of a fluid is provided, which device in one configuration include a longitudinal member configured to receive fluid radially along a selected length of the longitudinal member, the longitudinal member including flow restrictions configured to cause a pressure drop across the radial direction of the longitudinal member. In another aspect, a method of completing a wellbore is provided, which method in one embodiment may include providing a flow control device that includes a tubular with a first set of fluid flow passages and at least one member with a second set of fluid passages placed outside the tubular, wherein the first and second set of passages are offset along a longitudinal direction and the member is configured to receive a fluid along the radial direction; placing the flow control device at a selected location a wellbore; and allowing a fluid flow between the formation and the flow control device.

Abstract: Method and actuator system for a Kellyguard valve disposed in a drill string. The actuator system includes a sleeve that includes a cavity; an actuator disposed inside the cavity and configured to rotate the Kellyguard valve; first and second external regions of the sleeve having plural holes configured to receive a medium under pressure for actuating the actuator; a ring provided around the first and second external regions of the sleeve and configured to be fixed, the ring having first and second internal grooves facing the first and second external regions, respectively; and first and second seals provided inside the first and second grooves, respectively, at least one of the first and second seals being configured to not touch the first or second external regions of the sleeve when in a collapsed state and to touch the first or second external regions when in an inflated state.

Abstract: A technique employs a formation isolation valve that utilizes a ball rotatably mounted within a valve housing. The valve is designed to enable rotation of the ball about a fixed axis without translation of the ball. Rotation of the ball is achieved by connecting an arm to the ball at a position offset from the axis of rotation. A movable mandrel also is connected to the arm to enable selective actuation of the ball.

Abstract: An actuator or valve includes an inner member; an outer member around the normally rotatable inner member; the inner member including normally two spaced apart outwardly extending projections abutting with the outer member; the outer member including normally two inwardly extending projections abutting with the inner member, the projections defining a chamber therebetween; and the actuator further including a fluid port in communication with the chamber. The actuator/valve is normally made by straight profile cutting. The compact rotary actuator may be remotely operated.

Abstract: A hollow poppet valve has a stem portion provided at one end thereof with a tip portion; a cap portion; and a flared fillet portion formed between the stem portion and the cap portion, wherein at least a part of the stem portion that connects to the fillet portion is a thin hollow cylindrical member, and the cap member is welded to the fillet portion. The cap member is thin and has an arcuate axial cross section. It is laser-beam welded to the seat-abutment portion formed at the open end of the fillet portion such that a weld bead is formed along the inner periphery of the interface of the mated ends of the members. The weld bead adds an extra weld depth to the weld, which increases the modulus of section of the welded regions of the cap member and the fillet portion and enhances their welding strength.

Abstract: A method and apparatus for the singulation of valve plates and/or assembled valves from a lead-frame are described. The method and apparatus utilizes an electric current to fuse tabs which join the valve plate and/or the assembled valve to the lead-frame. The valve comprises a first and second valve plate with offsetting apertures and a flap disposed and movable between the first and second plates.

Abstract: Cage valve, flow trim components and methods for reduced fracturing of flow trim. The valve is of the type having flow trim arranged across an inlet bore and aligned with an outlet bore, and including a stationary tubular cage and an external cylindrical flow collar slidable along the side wall of the cage to cover or uncover one or more flow ports in the cage side wall. The tubular cage is formed such that, at least in the ported portion in which the flow ports are formed, the cage includes a tubular outer cage member and a tubular inner cage member, the inner cage member and the outer cage member being formed from a tungsten carbide material, being concentrically aligned, having a length to span at least the ported portion, and being joined together by bonding at an interface formed between the inner cage member and the outer cage member.

Abstract: A backflow prevention device includes a plurality of flaps and a frame case for rotatably supporting the flaps. The flaps are opened by airflow supplied from a cooling fan and closed by gravity when the airflow stops. The backflow prevention device also includes a connecting member for connecting between the flaps. The connecting member serves to open the flaps at the same angle or close them simultaneously in response to changes in the amount of airflow supplied by a cooling fan in a manner such that the flaps are cooperatively opened or closed.

Abstract: A puck retaining recess in a plunger of a solenoid valve is formed with a puck retaining lip that is fixed or unified with the plunger. The puck is then radially compressed to fit through a central opening of the retainer lip, and once the puck is pushed past the retainer lip, it is allowed to radially expand within the recess where the puck is retained between a bottom of the recess and the retainer lip. This eliminates many problems that previously occurred with separable retainer lips pressed into position to hold a puck after its insertion into a plunger recess.

Abstract: The invention relates to a solenoid valve, in particular for a brake system of a motor vehicle, having an axially displaceably supported armature, on one end of which a valve sealing body is disposed and with the other end of which a pole core is associated, and having a compression spring acting in prestressed fashion between the pole core and the armature. It is provided that the compression spring is held in prestressed fashion in an axial passage of the armature, between a bolt, having the valve sealing body and held in a selectable position in the axial passage in force- and/or form-locking fashion, and a thrust piece, disposed such that it can be pushed out of the axial passage up to a stop and subjects the pole core to the prestressing force. The invention further relates to an armature for a solenoid valve. Finally, the invention relates to a method for producing an armature for a solenoid valve.

Abstract: Embodiments and methods are disclosed herein that relate to a valve assembly. The valve assembly includes a housing having a passage formed therethrough, and a valve ball having a through hole and disposed in the housing, in which the valve ball is rotatable between an open position that has the through hole aligned with the passage and a closed position that has the through hole misaligned with the passage. The valve assembly further includes a seat having a first tapered surface and disposed in the housing adjacent to the valve ball, wherein the seat is biased towards the valve ball, and a seat holder having a second tapered surface and disposed in the housing adjacent to the seat such that the first tapered surface of the seat is disposed adjacent to the second tapered surface of the seat holder.

Abstract: A pressure control valve arrangement is provided for controlling the fluid pressure in an ABS brake system of a vehicle such that, in the event of a tendency of individual wheels of the vehicle to lock, the brake pressure in associated brake cylinders can be adaptively adjusted. At least two diaphragm valves, which have diaphragms which are loaded by spring elements, and at least one electromagnetic control valve, which can be activated by an electronic control device for the pilot control of the diaphragm valves, are provided in a housing of the pressure control valve arrangement. At least one valve seat of the at least one electromagnetic control valve is formed in a unipartite fashion with a housing part which is formed by a plastic injection-molded blank.

Abstract: A microvalve device includes a body, a valve element supported for movement relative to the body, and an actuator operatively coupled to the valve element for moving the valve element in a normal range of travel. A travel limiting structure operatively cooperates with at least one of the valve element and the actuator to effectively limit the magnitude of movement of the valve element or the actuator outside the normal range of travel to prevent failure of the body, the valve element, or the actuator due to exceeding failure stress limits. A method of forming a microvalve with such a travel limiting structure is also disclosed.

Abstract: The present invention concerns a cardiac valve prosthesis system (10; 40) for implantation into the body of a mammal. The prosthesis system (19; 40) comprises a valve (16) mounted on an stent element (18) to form a stented valve element (12), and an anchoring element (14) to be arranged within the aorta of the mammal to be treated with the prosthesis and spaced-apart form the stented valve element (12). Further, the anchoring element (14) comprises a cylindrical tube element composed of fabric (22) supported by a metal mesh, and the stented valve element (12) and the anchoring element (14) represent two constructional distinctive elements being associated by ligament-like connecting means (30; 50), such, that the connecting region (28) between the stented valve element (12) and the anchoring element (14) is generally free from foreign material.

Abstract: The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Abstract: A method of assembling a valve assembly for delivering a fluid from a fluid bag to an animal caging system for housing an animal can include coupling an upper member having a piercing member to a base having a base fluid channel. The method can also include disposing a stem member at least partially within the base fluid channel and disposing a sealing member in the base fluid channel. The sealing member preferably has a flow aperture and a sealing member bottom surface, and facilitates sealing of the flow apertures when the sealing member bottom surface abuts a top surface of the stem member. The method can further include disposing a spring element within the base fluid channel, wherein a portion of the spring element abuts the lower surface to apply a biasing force to the stem member.

Abstract: A microvalve for controlling fluid flows, and a sealing device for sealing cavities in a microfluidic system, particularly in a lab-on-a-chip system, and a method for the production thereof. A sealing surface of a valve body, or a sealing element, respectively, rests on a sealing surface of a substrate and is pressed against the sealing surface of the substrate in a fluid-tight manner by means of a clamping element. The clamping element and/or the valve body, or the sealing element, respectively, are at least partially elastic.

Abstract: A method of making a flow control device for controlling flow of fluid between a formation and a wellbore is provided, which method in one aspect may include: providing a member suitable for placement in a wellbore for receiving formation fluid; selecting a geometry for a flow-through region configured to substantially increase value of a selected parameter relating to the flow-through region when a selected property of the formation fluid is in a first range changes and maintain a substantially constant pressure drop across the flow-through region when the selected property of the fluid is in a second range; and forming the flow-through region on the member to provide the flow control device.

Abstract: A module, direct fuel injector (10) includes a fuel side sub-assembly (78) having valve body structure (12, 14) defining a main flow passage (16) there-through, an outlet opening (26) and a seating surface (24). A needle (18) is in the main flow passage and has first and second ends. The second end (22) has a sealing surface (20). The needle is movable between a closed position with the sealing surface engaging the seating surface to prevent fuel from passing through the outlet opening, and an open position. A spring (30) biases the needle to the closed position. Manifold structure (36, 48) is coupled to the valve body structure. The injector also includes a dry side sub-assembly including a piezo stack (42) coupled to the manifold structure and changes length when voltage is applied thereto. The piezo stack is associated with the first end of the needle so that when the length of the piezo stack changes, the needle moves from the closed position to the open position thereof.

Abstract: A flapper valve assembly and a method of making the same. The flapper valve assembly is mountable to a manifold as a unit. The flapper valve assembly can include bearings that do not require assembly on a shaft of the flapper valve. More particularly, the flapper valve can include a shaft having one or more flap portions and one or more bearing portions molded in place on the shaft as a unitary structure. The bearing portions are separated from adjacent flap portions and/or the shaft thereby forming a bearing that rotates independently of flap portions on the shaft. The flapper valve is mounted to a flapper valve carrier that can include sealing members for facilitating a tight seal between the flapper valve and the carrier and/or the carrier and a manifold.

Abstract: A venous valve with a frame and a cover on the frame for unidirectional flow of a liquid through the valve.

Abstract: For reducing the NOx-emission of a large sized two stroke diesel engine having at least one combustion room (3), a reciprocating piston (4) and an exhaust opening (12) controlled by an exhaust valve (13) at each work cyclus a small volume of burnt gas is retained in the combustion room (3) and so added to the fresh air for the next combustion. For achieving this retention of burnt gas the underside of the valve disc (15) off the exhaust valve (13) is provided with a shallow concave face (17) building a basin-like collection room, whose depth is within a range of 2-10% of the outer diameter of the valve disc (15).

Abstract: A module, direct fuel injector (10) includes a fuel module (46) having a valve body (12) defining an outlet opening (20) and including a seating surface (18). A needle 14, disposed in valve body, has a sealing surface (16). An armature (28) is coupled with the needle such that movement of the armature moves the needle between a closed position with the sealing surface engaging the seating surface and an open position with the needle moving outwardly from the valve body with the sealing surface being disengaged from the seating. A spring (38) biases the armature and thus the needle to the closed position. An inlet tube (22) is coupled to the fuel module defining an inlet of the injector. A power assembly (42) is separate from, but coupled to, the fuel module. The power assembly includes an electromagnetic coil (44) for causing movement of the armature, and a connector (43).

Abstract: A variable shim and valve seat assembly for applications in a solenoid actuated fuel injector includes a variable shim having a face, a valve seat having a top surface that interfaces with the face, and mating features integrated in the face of the variable shim and the top surface of the valve seat. The mating features provide axial displacement of the valve seat through rotation of the valve seat relative to the variable shim. The mating features may be ramped surfaces. The amount of seat displacement is dependent on the designed ramp angle, the number of ramps, and the degree of rotation. Once the desired valve stroke is set, the seat is welded to the injector body to achieve a leak free interface. Tight stroke setting tolerances can be achieved by applying an axial load to the seat during stroke setting and welding.

Abstract: A pressure-actuated member, for example a paint pressure controller or a coating agent valve, for influencing a mean coating agent pressure of a coating agent to be applied in a painting system, is disclosed. An exemplary pressure-actuated member may comprise a component, which is subjected directly to the coating agent during operation and is mobile and/or can be deformed to influence the pressure. Examplary components subjected to the coating agent may at least partially comprise a ceramic material in order to achieve a longer service life.

Abstract: A valve shaft 8 and a drive shaft 11 of an EGR valve 1 are butted to each other; protrusions 26a, 26b, 27a, and 27b formed on the inner sides of cotter members 24, 25 of a cotter 23 are engaged with grooves 21, 22 respectively formed on the outer peripheral surfaces of the ends of the shafts 8, 11; the urging force of a spring 28 for exerting an urging force in the closing direction of valve disks 6, 7 on the cotter 23 is applied to the cotter 23 through a spring holder 30 to press the protrusions 26a, 26b, 27a, and 27b to the grooves 21, 22.

Abstract: A method of diagnosing pressure boundary integrity of a control includes choosing a control valve having a valve body, determining a velocity profile within the control valve, choosing an area of the velocity profile, choosing a surface on an exterior of the valve body at or adjacent to the area, forming a pad on the exterior surface overlying the point, applying a testing device to the pad, and measuring a reference thickness of a wall of the valve body through the pad using the testing device. The method further includes applying the testing device to the pad at a time subsequent to measurement of the reference thickness, measuring a first thickness, and comparing the first thickness to the reference thickness. The comparison of the first thickness to the reference thickness can be used to calculate the amount of valve body wall lost during using and the remaining life of the control valve.

Abstract: A hub for a sheath, catheter, or other tubular device includes a first hub portion including a first hub lumen sized for receiving a medical device therethrough, and a second hub portion including a second hub lumen, the second hub portion coupled to the first hub portion such that the first and second hub lumens are aligned with one another and the first and second hub portions are spaced apart from one another to define a gap. A valve is secured within the gap between the first and second hub portions that includes a valve passage therethrough, e.g., for accommodating receiving a medical device through the first and second hub lumens into the tubular device, while providing a substantially fluid tight seal. For example, the valve passage may include a bore extending partially from a first end of the valve towards a second end of the valve, and a slit that extends from the end of the bore to the second end of the valve.

Abstract: A process to manufacture an oilfield component comprises selectively reinforcing a base material with an age-hardenable clad material and age-hardening the clad material for a selected time and at a selected temperature profile, wherein the age-hardening results in the clad material developing a selected strength gradient. A body of a ram blowout preventer comprises, a low-ally base material, a vertical bore through the body, and a horizontal bore through the body intersecting the vertical bore, wherein at least a portion of the body is selectively reinforced with a clad material, and wherein the clad material is age-hardened for a selected time and at a selected temperature profile resulting in the clad material developing a selected strength gradient.

Abstract: The invention relates to a method of producing a valve arrangement and to a valve arrangement for an expansion valve, which is provided in a vehicle air conditioning system operated with refrigerant and has a basic opening in the valve seat, the cross section of this basic opening being produced for a predetermined mass flow by material removal.

Abstract: A valve body, e.g. a valve body adapted to be disposed in a connector to be connected to a catheter, has an opening/closing part which opens upon inserting a member into the opening/closing part and which closes upon withdrawing the member from the opening/closing part. The valve body includes a main body part made of a silicone rubber and a surface layer disposed on a surface of the main body part. This surface layer serves as a sliding surface which, when a guide wire has been inserted into the opening/closing part, slides on the guide wire. The surface layer is constituted mainly of silicon oxide and hence improves the sliding properties of the guide wire. Thus, the valve body is reduced in the resistance of sliding on the guide wire.