Abstract: A high purity control valve for use in high conductance, proportional control applications includes a moveable control plate having a flow-through passage to enhance fluid sweep of the internal valve volume. Nested orifice ridges are used to achieve high conductance with small actuator movement. Enhanced leak tightness can be provided by incorporating into the control plate materials softer than the material comprising the orifice ridge. The control plate comprises a control plate body having a counterbore in fluid communication with a conduit, radial fluid flow paths and axial fluid flow paths. A flat side of the control plate includes a continuous uninterrupted flat portion to shut-off fluid flow in the valve. The radial fluid flow paths provide fluid communication from the counterbore to a circumferential perimeter of the control plate and the axial fluid flow paths provide fluid communication with the fluid conduit through an intermediate valve chamber portion.

Abstract: A flow control structure of a water hose joint has: a hose connector, a coupler, a control section, and a hose. The coupler is coupled with the hose connector, the control section is sleeved on the coupler, and the coupler is inserted into the hose, so as to complete a flow control structure of the hose connector. By combining the hose connector with a connecting pipe and rotating the control section to adjust the relative position of the control section and the coupler to change the water flow, which has the effect of simple flow adjustment.

Abstract: The present invention discloses an underwater transmission device with a lead screw sliding block mechanism, and relates to the technical field of underwater transmission devices. The device comprises a watertight motor and a lead screw sliding block mechanism A detection device is arranged in the watertight motor and comprises a planetary reducer and a rotary transformer. The lead screw sliding block mechanism comprise a base, a lead screw threaded rod and a sliding block. The watertight motor and the lead screw sliding block mechanism of the underwater transmission device with a lead screw sliding block mechanism are integrally designed. Therefore, the device has a compact structure. The rotary transformer can detect the absolute position of the sliding block, and facilitates debugging of the control system of the watertight motor. An instrument device can be fixed to the sliding block to accurately and linearly reciprocate.

Abstract: Described herein are embodiments of apparatuses and methods that include an annular flow lubricator. In an exemplary embodiment, the annular flow lubricator includes a body housing an internal flow tube such that well flow enters a lower portion of the internal flow tube, travels up the internal flow tube, and exits an upper portion of the internal flow tube. Upon exiting the upper portion of the internal flow tube, well flow then travels in an annulus between the body of the lubricator and a wall of the internal flow tube before exiting an outlet port of the lubricator.

Abstract: A tap assembly with a hollow tap body which defines a dispensing chamber leading to an outlet arrangement. A valve assembly with a valve element is provided to selectively open an inlet into the dispensing chamber. A push button is provided which operates the valve assembly, and which defines an operating chamber, with the push button movable into the operating chamber. A connecting member is provided extending from the push button through the operating chamber. A seal is provided to prevent liquid passing from the dispensing chamber to the operating chamber.

Abstract: Methods, apparatus, systems and articles of manufacture for reducing noise and/or cavitation in valves are disclosed. An example disclosed herein includes a valve including a valve body including a fluid inlet, a fluid outlet, and a fluid passageway extending between the fluid inlet and the fluid outlet, and a valve trim apparatus disposed in the fluid passageway, the valve trim apparatus including a plug and a cage, the plug circumscribing the cage, the plug including first openings, the cage including second openings, the plug movable relative to the cage between a first position to enable fluid communication between the first openings of the plug and the second openings of the cage, and a second position to prevent fluid communication between the first openings of the plug and the second openings of the cage.

Abstract: A system may be configured to manufacture a layered cage of a trim. Some embodiments may additively manufacture, in each of a plurality of layers, a plurality of channels each having a cross section such that an amount of the layers satisfies a criterion, the cross section being defined by vertical walls, angular portions that extend from the walls, and a shaped top and/or bottom intersecting with angular portions. And the channels of one of the layers may not intersect with any other channel of any other layer of the cage.

Abstract: To avoid formation of surface sag formed when an internal flow path of a valve element is processed and to ensure a maximum flow rate in a fluid control valve where a seating surface of the valve element is formed of a resin layer, in a fluid control valve that includes a valve seat, and a valve element including resin layers provided in concave grooves formed on a facing surface facing the valve seat, the valve element further includes internal flow paths whose inflow ports are opened in a back surface facing away from the facing surface and whose outflow ports are opened in portions around the concave grooves on the facing surface, and counterbored portions are formed on sides of the inflow ports of the internal flow paths.

Abstract: A choke includes a cage having a plurality of openings extending therethrough, a first fluid port and a second fluid port, the openings in the cage fluidly interposed between the first and second fluid ports, and a selectively positionable blocking member positioned with respect to the openings to selectively overlie all of a portion of the openings, wherein the surface of the opening extending through the cage are a single crystal material. The single crystal material may be provided as an insert, having an opening therethrough, secured in position with respect to the cage.

Abstract: Disclosed is a tube connector for medical treatment including a housing including an internal channel configured to allow an inflow pipe disposed at the front end thereof and an outflow pipe disposed at the rear end thereof to fluidly communicate with each other, an insertion hole formed from the outer surface of the rear end of the housing to the internal channel, and at least one branch pipe disposed so as to fluidly communicate with the internal channel, a push button having a through hole, the push button being disposed in the insertion hole so as to be movable upwards and downwards, and an elastically deformable dome-shaped balloon configured to surround the insertion hole of the housing, the lower part of the balloon being open, wherein the internal channel of the housing is opened and closed through the upward and downward movement of the push button.

Abstract: A hot water supply device includes a heater, a water channel, a mixing valve unit, and a circulation mechanism. The mixing valve unit has a valve member and a drive unit configured to drive the valve member to change a mixing ratio of supply water heated by the heater and unheated water. The circulation mechanism has: a connection passage that connects the water channel to the heater by being branched from a part of the water channel between the mixing valve unit and the heater; an on-off valve that opens and closes the connection passage; and a pump configured to return the supply water remaining in the water channel through the connection passage to the heater. A drive amount acquisition unit acquires a drive amount of the drive unit, and a controller controls the circulation mechanism based on the drive amount acquired by the drive amount acquisition unit.

Abstract: A method of converting an air/water dental syringe of the type having a syringe body and an autoclavable dental tip and lacking illumination into a converted air/water dental syringe adapted to be used with a disposable dental tip different from the autoclavable dental tip and with illumination capabilities includes using a conversion kit having a retainer body and a self-contained module. The syringe body is attached to a proximal end of the retainer body through a proximal opening for providing air and water. A proximal end is inserted into a distal opening of the retainer body. The self-contained module includes a light-emitting diode (LED), a battery powering the LED, and a switch to turn the LED ON and OFF. Light emitted from the LED provides illumination through a light opening on an outer surface of the retainer body generally towards a distal end of the disposable dental tip.

Abstract: Embodiments of symmetric flow valves for use in a substrate processing chamber are provided herein. In some embodiments, a symmetric flow valve includes a valve body having sidewalls, a bottom plate, and a top plate that together define an interior volume, wherein the top plate includes one or more axisymmetrically disposed openings; a poppet disposed in the interior volume, wherein the poppet includes a central opening and a plurality of portions configured to selectively seal the one or more axisymmetrically disposed openings of the top plate when the symmetric flow valve is in a closed position; and a first actuator coupled to the poppet to position the poppet within the interior volume in at least an open position, where the poppet is spaced apart from the top plate to allow flow through the one or more axisymmetrically disposed openings of the top plate, and the closed position.

Abstract: An electromagnetically actuated valve. The electromagnetically actuated valve with a small longitudinal extension, allows great through-flow quantities for the fluid with a small pressure difference. It is intended in this case that it should be producible cost-effectively in large unit numbers. An armature carries a plurality of valve bodies arranged in a point-symmetrical manner which together form a movable valve, wherein the plurality of valve bodies interact with a same plurality of valve seats which together form a stationary valve. The valve can be used along with a pump, a tank and/or other fluid units in assemblies for conveying mixtures of gas and liquid.

Abstract: A tap apparatus including a container coupling portion including a liquid inlet portion, a body portion, and a plug valve portion. The body portion includes a liquid outlet portion, wherein the liquid outlet portion is in fluid communication with the liquid inlet portion of the container coupling portion. The plug valve portion is configured and arranged to be seated within the body portion, wherein the plug valve portion is configured and arranged to be moved relative to the body portion between an open position, in which a liquid is free to flow from the liquid inlet portion and out through the liquid outlet portion, and a closed position, in which liquid from the liquid inlet portion is prevented from flowing out through the liquid outlet portion. The body portion also includes a plurality of flow channels provided in an interior surface thereof.

Abstract: A flow control valve uses two ceramic members having conforming surfaces which are coupled together to form a fluid-tight seal, and slidable relative to each other to control fluid flow. Elongated obround apertures in the members mate to each other to form a fluid path which is wholly contained within the ceramic members. The members slide along the elongated dimension of the obround apertures between a closed position and controllable open positions where the obround apertures overlap creating an obround flow path of a controlled size. The shaping of the first and second apertures and their interaction when the valve is opened and closed permits fine control of the flow of fluid through the apertures under controlled sliding movement of the ceramic members relative to each other.

Abstract: An assembly and method for a choke valve body having a choke valve to control flow of fluids. A sleeve positioned in and attached to the choke valve body to flow the fluids through an inner sleeve region internal to the sleeve instead of an outer sleeve region external to the sleeve.

Abstract: A method of collecting target cells including providing a cell collection device comprising a conduit defining a fluid channel, a first screen and a second screen, the first and second screens are movable relative to each other along the flow direction between a first configuration and a second configuration, flowing a fluid composition comprising the target cells in the flow direction while the first and second screens are in a first configuration to screen at least part of the target cells, moving the first screen relative to the second screen along the flow direction from the first configuration to form the second configuration, to permit at least part of the target cells screened in the first configuration to pass the first screen first and then the second screen, and collecting at least part of the target cells at the second end of the fluid channel.

Abstract: The invention relates to an actuator for a valve in a refrigeration system. The invention also relates to a valve with such actuator, and to a refrigeration system with such valve. The actuator comprises an elongated Shape Memory Alloy (SMA) element extending along two or more string-like extensions from a distant end to a proximate end in relation to a valve element of a valve. The SMA element, when forming part of the valve, may extend from the distant end to the proximate end connected to a housing of the SMA element, however, electrically insulated from the housing. An encapsulation may provide a thermal resistance, a thermal conductor and/or an electrical resistance between the SMA element and other elements or the surroundings of the SMA element.

Abstract: A high purity fluid control valve includes a moveable control plate having a flow-through passage to enhance fluid sweep of the internal valve volume. The valve is of jet and seat type using nested orifice ridges to achieve high conductance with small actuator movement. Enhanced leak tightness in the valve shut-off condition may additionally be provided by selectively incorporating into the control plate materials softer than the material comprising the orifice ridge. The control plate is especially useful in high conductance, fast acting, and proportional control applications such as gas delivery in semiconductor manufacturing.

Abstract: A high purity fluid control valve includes a moveable control plate having a flow-through passage to enhance fluid sweep of the internal valve volume. The valve is of jet and seat type using nested orifice ridges to achieve high conductance with small actuator movement. The flow-through control plate is especially useful in fast acting proportional control applications such as gas delivery in semiconductor manufacturing.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: A sleeve shaped valve cage for receiving a valve member is described. The valve cage can guide the valve member relative to the valve cage. The valve cage can include a throttle section configured to provide pressure-reduced flow rates of the processing fluid, the throttle section having multiple throttle conduits extending from an inside of the valve cage to an outside of the valve cage; a high capacity flow section adjacent to the throttle section in the displacement direction, the high capacity flow section configured to provide increased flow rates of the processing fluid; and at least one equalization channel formed in the valve cage and extending from the inside to the outside of the valve cage, the at least one equalization channel leading from the high capacity flow section to the throttle section such that, before the valve member releases all throttle conduits, the equalization channel is released.

Abstract: A relief valve can include a valve body, a valve member, a valve stem, and a magnetic member. The valve body can define a flow path that extends between a first port and a second port. The valve body can include a valve seat disposed between the first port and the second port. The valve member can be disposed between the valve seat and the second port of the valve body. The valve member can move along an actuation axis. The valve stem can be coupled to the valve member. The valve stem can extend from the valve member towards the first port. The magnetic member can be coupled to the valve member and can generate a magnetic force that urges the valve member to seal with the valve seat of the valve body.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring, a hydraulic control chamber which directly actuates the control ring, a pump rotor comprising a plurality of slidable vanes which rotate in the control ring, a control chamber wall, a temperature control opening arranged in the control chamber wall, and a temperature control valve which connects or disconnects the temperature control opening to an atmospheric pressure. The temperature control valve comprises a valve plunger which is axially shiftable so as to block or leave open a lubricant passage, and a first bimetal actuator sheet which directly actuates the valve plunger. The first bimetal actuator sheet comprises a first switching temperature. The valve plunger is in an open position if a lubricant temperature exceeds the first switching temperature.

Abstract: A fluid valve includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. A valve seat is disposed within the fluid passageway. A fluid control member is movably disposed within the fluid passageway, the fluid control member cooperating with a trim assembly to control fluid flow through the fluid passageway. The valve seat is clamped into the valve body and the fluid valve operates under choked flow at a pressure drop of 10% or less of the inlet fluid pressure.

Abstract: A tool element assembly (10) is provided in which ambient air is drawn into a fluid chamber (24) and heated via a heating element (28) in order to provide a low pressure, efficient, heating system.

Abstract: A device and method for positioning an orifice plate carrier in an orifice fitting. The positioning device is secured in an upper chamber of the fitting and includes an insert having a first end and a second end, and a back side, a first side, and a second side each extending from and connecting the first and second ends to form a through-passage with a front side. The through-passage is configured to allow the orifice plate carrier to pass therethrough. The first and second sides include a first cutout and a second cutout, respectively, which are configured to allow a gear to pass therethrough. The gear engages grooves on the orifice plate carrier to pass the orifice plate carrier through the upper chamber. The positioning device provides consistent and repeatable alignment in guiding the orifice plate carrier in and out of the fitting.

Abstract: A relief valve can include a valve body, a valve member, a valve stem, and a magnetic member. The valve body can define a flow path that extends between a first port and a second port. The valve body can include a valve seat disposed between the first port and the second port. The valve member can be disposed between the valve seat and the second port of the valve body. The valve member can move along an actuation axis. The valve stem can be coupled to the valve member. The valve stem can extend from the valve member towards the first port. The magnetic member can be coupled to the valve member and can generate a magnetic force that urges the valve member to seal with the valve seat of the valve body.

Abstract: A high-flow valve arrangement in an electro-hydraulic safety control unit to discharge oil volume on instructions from a steam turbine safety system to actuate actuators to stop steam flow in steam turbines to shut-off, is provided. The valve includes a valve body with a flange having a plurality of spaced-apart through holes, a flat-circular plate cartridge and a valve housing configured to each other. The housing includes a chamber to accommodate oil volume; an inlet/outlet port to enable the oil volume to enter and exit therefrom, and a peripheral seat where the cartridge seats. The plate cartridge is capable of being moved upward, defining a very small stroke, upon the increase or decrease of the oil volume in the chamber to open and close the outlets defined via the plurality of spaced-apart through holes to enable and stop the fluid flow therefrom.

Abstract: A disc pump valve for controlling the flow of fluid through a disc pump includes a first plate having first plate apertures and a second plate having second plate apertures both extending generally perpendicular through the first plate and the second plate, respectively. The second plate apertures are substantially offset from the first plate apertures. The disc pump valve also includes a sidewall disposed between the first plate and second plate. A valve flap is disposed and moveable between the first plate and second plate. The valve flap includes flap apertures substantially offset from the first plate apertures and substantially aligned with the second plate apertures, and low-mass areas. The low-mass areas are offset from the first plate apertures and second plate apertures. The valve flap moves between the first plate and second plate in response to a change in direction of differential pressure of the fluid outside the valve.

Abstract: A single-piece component for a magnetic actuator, in particular for fuel injection, including an internal pole, a magnetic sleeve, and a non-magnetic separating sleeve, the internal pole, the magnetic sleeve and the separating sleeve being integrated into the single-piece component. A method for manufacturing a single-piece component for an magnetic actuator with the aid of a two-component powder injection molding method.

Abstract: A manifold assembly includes a solenoid valve, a manifold, and a check valve. The manifold has an inlet bore and an outlet bore. The check valve has a first end and a second end. The first end is configured to directly mate with the solenoid valve. The second end is configured to directly mate to the manifold. The second end has an inlet and an outlet. The inlet is in fluid communication with the inlet bore. The outlet is in fluid communication with the outlet bore.

Abstract: A method of controlling the flow of a fluid in a pipe system includes controlling a sleeve valve in the pipe system, the sleeve valve includes a valve body having an inner surface and an outer surface defining an inlet, an outlet, and a body cavity between the inlet and the outlet, a sleeve disposed at least partially within the body cavity, the sleeve including at least one opening fluidly connecting the inlet to the outlet, a gate proximate to the sleeve, and a drive assembly including a pair of drive lines, each drive line including a drive shaft, a first drive line of the pair of drive lines including a sync cam on the first drive line movably positioned between the front stop and the back stop, and moving the gate to uncover the at least one opening to allow fluid to flow from the inlet to the outlet.

Abstract: A method of controlling the flow of a fluid in a pipe system includes controlling a valve in the pipe system, the valve including a valve body having an inlet, an outlet, and a body cavity, a gate moveable over a portion of the valve body at least partially between the inlet and the outlet, the gate including a cam stop, and a drive assembly, the drive assembly including a pair of drive lines, a first drive line of the pair of drive lines including a sync cam, the sync cam of the first drive line movably positioned on the drive shaft of the first drive line and positioned relative to the cam stop, moving the sync cam in a first direction to a front stop position; and moving the gate in the first direction to allow fluid to flow from the inlet to the outlet.

Abstract: An electromagnetic actuator with at least one solenoid coil, one armature, which is magnetically movable by means of the solenoid coil in an armature area and has a first and a second tapering, and a magnetic yoke. The yoke has a first dipping stage in which the first tapering of the armature is dipped upon a shifting of the armature in a direction of actuation, and a second dipping stage in which the second tapering of the armature is dipped upon a shifting of the armature in the direction of actuation. A maximum radial external dimension of the armature in the area of the second tapering is smaller than a minimum radial internal dimension of the second dipping stage. In addition, the invention refers to a fluid valve that is actuated by means of the electromagnetic actuator.

Abstract: Sleeve valves include a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet, an outlet, and a body cavity between the inlet and the outlet; a sleeve disposed at least partially within the body cavity, the sleeve including at least one opening fluidly connecting the inlet to the outlet; a gate proximate to the sleeve and movable over a portion of the sleeve including the at least one opening, the gate including a front stop and a back stop; and a drive assembly including a pair of drive lines, each drive line having a drive shaft, a first drive line of the pair of drive lines including a sync cam, the sync cam of the first drive line movably positioned on the drive shaft of the first drive line and between the front stop and the back stop.

Abstract: Valves include a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet, an outlet, and a body cavity between the inlet and the outlet; a gate movably coupled to the valve body and moveable over a portion of the valve body at least partially between the inlet and the outlet, the gate including a cam stop; and a drive assembly, the drive assembly including a pair of drive lines, each drive line having a drive shaft, a first drive line of the pair of drive lines including a sync cam, the sync cam of the first drive line movably positioned on the drive shaft of the first drive line and positioned relative to the cam stop.

Abstract: A sliding screen valve for controlling fluid flow comprises a multi-apertured valve plate (50, 90) configured for sliding movement relative to a multi-apertured valve seat between closed and open configurations and comprises an array of apertures (60, 100) separated from one another by elongate interstitial elements angled at between 15 to 45 degrees from the axis of motion. The valve plate may be operatively connected via an actuator frame (274) controlling its movement to an actuator for sliding movement relative to the valve seat, and may be connected to the actuator via a resilient support element (272) configured to allow a floating movement of the valve plate normal to the valve plate. Initiation or termination of the sliding movement may be damped by at least one damping mechanism. The screen valve may be configured for lateral reciprocating movement and be used in gas compression and/or expansion equipment such as piston compressors or expanders.

Abstract: Provided is a valve, including an in-line flow passage, a shut-off mechanism, and a multi-stage throttling section disposed in the in-line flow passage. Further provided is an in-line valve, including a flow control component and a sealing component, wherein the flow control component and the sealing component are separate from one another.

Abstract: A pressure control valve assembly of a plasma processing chamber in which semiconductor substrates are processed includes a housing having an inlet, an outlet and a conduit extending between the inlet and the outlet, the inlet adapted to be connected to an interior of the plasma processing chamber and the outlet adapted to be connected to a vacuum pump which maintains the plasma processing chamber at desired pressure set points during rapid alternating phases of processing a semiconductor substrate in the chamber. A fixed slotted valve plate having a first set of parallel slots therein is fixed in the conduit such that gasses withdrawn from the chamber into the conduit pass through the first set of parallel slots. A movable slotted valve plate having a second set of parallel slots therein is movable with respect to the fixed slotted valve plate so as to adjust pressure in the chamber.

Abstract: A shock absorber includes a valve assembly which includes a valve disc engaging an inner and outer valve land defined by a valve body. The inner valve land is a non-circular valve land such that a radial dimension between the inner and outer valve land varies based upon a circumferential position of the radial dimension. The varying radial dimension provides a progressive valve opening for the valve assembly.

Abstract: A shot peening flow rate control that is useful for non-ferrous shot peening media. The control has an inlet for receiving media and an orifice through which the media may pass that is in communication with the inlet. A valve selectively blocks the orifice. The valve has a spindle that is guided for axial movement between an open and closed position. The closed position blocks the orifice and the open position places the spindle spaced from the orifice to allow media to flow through the orifice. A flow sensor has a deflectable member that extends into a flow path of media leaving the orifice. In response to increasing or decreasing flow of the media through the flow path the deflectable member will deflect more or less. A sensing device measures the deflection in the deflectable member and generates an electrical signal that varies in response to deflection in the deflectable member.

Abstract: A control device includes a valve body, a seat ring, and an actuator. The valve body defines a flow-path for a fluid. The seat ring is disposed within the flow-path. The actuator is coupled to the valve body and includes a control member. The control member is adapted for displacement relative to the seat ring for regulating a flow of the fluid through the flow-path. The control member includes a sealing disk adapted to sealingly engage the seat ring and close the flow-path. The seat ring includes a plurality of orifices disposed within the flow-path such that the seat ring prevents at least a portion of the flow of the fluid from substantially perpendicularly impacting the sealing disk.

Abstract: A compressor including a housing defining a suction pressure region and a discharge pressure region includes first and second scroll members forming compression pockets. A first chamber located on the first end plate of the first scroll member includes first and second passages and a first aperture extending therethrough and in communication with the first chamber. The first aperture provides communication between a compression pocket and the first chamber. A modulation assembly is located in the first chamber and includes a heater and a thermal valve. The valve is displaceable from a first position that isolates the first passage from the second passage and a second position that permits communication between the first and second passages. The valve is displaced as a result of a temperature change provided by the heater.

Abstract: An anti-cavitation seat which is disposable between an inlet and an outlet of a pressure reducing valve, and including a plurality of inlets causing fluid to flow into a converging pathway to reduce pressure of the fluid. The inlets form a tortuous path for a portion of the fluid flowing into the anti-cavitation seat, so as to further reduce the pressure of the fluid. A standard stem assembly is used in conjunction with the anti-cavitation seat to alter the flow of fluid through the valve.

Abstract: An integrated pressure control actuator assembly of a hydrogen supply system includes: a start/stop solenoid valve, a bypass valve, and a pressure control actuator, which are integrally formed in a single body; a normal flow path formed on the body, through which hydrogen gas is transferred from the start/stop solenoid valve to the pressure control actuator; an auxiliary flow path formed on the body, through which hydrogen gas is transferred according to opening and closing of the bypass valve connected to the normal flow path; and a control means for controlling the opening and closing of the bypass valve by detecting a failure of the pressure control actuator. The assembly enables the fuel cell vehicle to be driven in a limp home mode in the event of an emergency by adjustment of the pressure of hydrogen.

Abstract: In order to provide a fluid control valve that can flow a large amount of fluid with a compact arrangement, ring-shaped bottom formed grooves that are in communication with an upstream side flow channel through a valve inner flow channel and ring-shaped bottom formed grooves that are in communication with a downstream side flow channel through a valve inner flow channel are arranged alternatively and plurally between a seating surface and a valve seat surface, and a communication bore, which is an opening in communication with the bottom formed groove of the valve inner flow channel, is formed at least on the side surface of the bottom formed groove.

Abstract: Sleeve valves include a valve body having an inner surface and outer surface, the inner surface and the outer surface defining an inlet, an outlet, and a body cavity between the inlet and the outlet; a sleeve disposed at least partially within the body cavity, the sleeve including at least one opening fluidly connecting the inlet to the outlet; a gate proximate to the sleeve and movable over a portion of the sleeve including the at least one opening, the gate including at least one front stop and at least one back stop connected to the gate; and a drive assembly including at least one drive line having a drive shaft and a sync cam, the sync cam of each at least one drive line movably positioned on the drive shaft and between one of the at least one front stop and one of the at least one back stop.