Abstract: A solenoid valve includes a valve housing having a first space that communicates with an inlet flow path and a second space that communicates with an outlet flow path. A solenoid is provided in the valve housing to surround the first space. A flow path guide is provided in the first space and has an inflow path communicating with the first space. A plunger is rectilinearly moved in the flow path guide by the solenoid. A valve member is connected to the plunger and opens or closes the outlet flow path based on a plunger movement. A spring member provides elastic force allowing the valve member to move in a direction in which the valve member blocks the outlet flow path. A fluid guide part is formed in the plunger and guides a fluid, supplied into the inflow path via the first space, selectively to the second space.

Abstract: A valve assembly is provided and includes a valve housing, an actuator housing coupled to the valve housing and configured when actuated to open a normally-closed valve element in the valve housing whereby pressurized fluid is permitted to flow through the valve housing and a solenoid valve. The solenoid valve includes an armature-valve element balanced to remain in a closed position and an electromagnet. The electromagnet generates magnetic flux that moves the armature-valve element into an open position such that at least a portion of the pressurized fluid flows into the actuator housing to actuate the actuator housing.

Abstract: An actuator may include a stator, a pole; a bobbin; and windings provided around an exterior surface of the bobbin. The stator may include a stator body; and a plurality of magnets circumferentially arranged around an inner surface of the stator body. The stator, the pole, and the bobbin may be coaxial. An outer diameter of the pole may be smaller than an inner diameter of the bobbin such that the bobbin is movable in an axial direction over an exterior surface of the pole. An outer diameter of the bobbin may be smaller than an inner diameter of the stator such that the bobbin is movable in an axial direction inside the plurality of magnets circumferentially arranged around the inner surface of the stator body.

Abstract: To provide an electromagnetic valve with less parts count of components for opening-closing operation. An electromagnetic valve 2 includes a solenoid unit 4 including a cylinder-shaped coil 10 with a flow path formed at an inner circumferential side of the coil 10, a valve body portion 20, a plate spring portion 22 urging the valve body portion 20 toward a valve seat 16 formed on an end face 14 on a downstream side in a flow direction of the flow path 12 out of end faces of the solenoid unit 4, and a casing 8 accommodating the solenoid unit 4, the valve body portion 20 and the plate spring portion 22.

Abstract: A flow rate control apparatus includes a flow rate detection unit that detects the flow rate of a fluid flowing through a solenoid valve, a correlation storage unit that stores a correlation between a flow start point voltage at which the fluid starts to flow through a sample solenoid valve, which has substantially the same characteristic as the solenoid valve, and a limit voltage at which the sample solenoid valve is fully open, and a control unit that, when starting control of the flow rate of the fluid, changes the driving voltage of the solenoid valve, obtains the driving voltage at a time when the start of flowing of the fluid is detected as the flow start point voltage, and uses the correlation for the sample solenoid valve to set the driving voltage of the solenoid valve within a range between the flow start point voltage and the limit voltage.

Abstract: A solenoid is provided that includes: a primary package that is made of a molding resin and covers a solenoid body in which a coil is wound around a bobbin; and a secondary package that is made of a molding resin and covers the primary package. A contact surface between the primary package and the secondary package is provided with an anchor shape for enhancing joint strength between the primary package and the secondary package. The solenoid includes a connector part for electrifying the coil in addition to the solenoid body, the primary package covers both the solenoid body and the connector part, and the secondary package covers only a part of the primary package covering the solenoid body.

Abstract: A solenoid valve may have a fixed member having a tube portion. The valve may also have a mobile plunger positioned in the tube portion, the mobile plunger being axially movable between a first and a second position. The valve may also have a rod coupled to the mobile plunger and having a spool for control of fluid flow, the rod being axially movable in the tube portion. The valve may also have an electromagnetic coil positioned externally to the fixed member, where the rod has a coupling end and the mobile plunger has a coupling element where the coupling end hookingly couples to the coupling element.

Abstract: A pump-valve integrated mechanism includes an air pump driven by a power source. A main air channel provided inside the valve base is connected to the air pump and has a decompression structure. The main air channel is connected to an air inflation structure which includes a branch air channel and an air nozzle. A check valve is provided inside the branch air channel. The branch air channel between the check valve and the air nozzle is provided with an air deflation hole. An electromagnetic valve is provided between the air nozzle, the air deflation hole, and the check valve. During air inflation, the electromagnetic valve controls the check valve to become connected to the air nozzle, and the air deflation hole is closed. During air deflation, the electromagnetic valve controls the air nozzle to become connected to the air deflation hole and the check valve is closed.

Abstract: A system for conveying air from one location to another includes a soft duct having a passage and an air flow control device. The air flow control device can be operated to vary a cross sectional area of a portion of the passage of the soft duct.

Abstract: The invention relates to an electromagnetically operable valve device, comprising a valve housing (10) which has a first fluid connection (P) and a second fluid connection (E), each designed for controlled opening and closing by moving a closure unit (30), and at least one further fluid connection (A) provided on the valve housing, which forms a fluid channel (46) to the first or second fluid connection that can be intermittently interrupted by the closure unit.

Abstract: A valve seat, which a valve body of a movable core sits on, protrudes from an outside region of the valve seat located at an end of a columnar body toward the movable core. A gas flow passage in the movable core has: an inflow passage extending on a stationary core side in the direction in which the movable core moves; and two or more outflow passages branched on a valve body side from the inflow passage. A protrusion height of the valve seat is 0.3 times or more an inner diameter of the outflow passages. A gas accumulation space includes: a region located away from the movable core by a distance 0.5 times or more the inner diameter of the outflow passage; and a region located away from the movable core by a distance greater than or equal to the inner diameter of the outflow passage.

Abstract: An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. A flux sleeve is surrounded by a coil of an electromagnet. A pole piece defines a return passageway for reagent to flow. A filter surrounds the pole piece and includes a cage and a mesh fixed to the cage. The cage includes a deformable first seal biasedly engaging an outer surface of the pole piece. The cage includes a second seal biasedly engaging the housing. The first and second seals define a closed volume such that all of the reagent flowing through the injector passes through the mesh.

Abstract: The present disclosure relates to fluid injection valves. Embodiments of the teachings thereof may include a valve needle for a fluid injection valve and a fluid injection valve. For example, a valve needle for a fluid injection valve may include: a needle shaft; and a sealing ball welded to a tip of the needle shaft. The welded joint between the sealing ball and the needle shaft comprises at least two separate weld seams extending along a perimeter of the valve needle in the form of c-shaped arcs.

Abstract: Apparatus and associated methods relate to a solenoid assisted valve including a split collar and a precision sealing valve seat surface with tight dimensional tolerances and substantial performance repeatability. In an illustrative example, the split collar may concentrically mate around a cylindrical bobbin. In some examples, the split collar may include ferromagnetic material alone or in combination with various thermoplastic materials. The placement of the split collar may be adjusted by manufacturing to fine tune placement of a magnetic pole and to customize valve performance, for example. The valve seat may include, for example, an orifice sealed with an elastic stopper. The valve seat may be configured, for example, with specific ratiometric dimensional relationships and flatness specifications. Various solenoid valves may allow manufacturers to tune the location of a solenoid generated magnetic pole, for example, to tailor the valve plunger performance for a wide variety of applications.

Abstract: An electromagnetic valve has a valve chamber which has an inflow opening for supplying a liquid and an outlet for discharging the liquid. The valve includes a valve seat and a valve member that is assigned to the valve seat. The fluidic connection between the inflow opening and the outlet of the valve is interrupted when a valve seat is closed by the valve member. The valve member is held on an armature plate which is moved by an electromagnetic drive unit toward an end stop which is formed by a first stop surface. In order for the operative capability of the valve to be guaranteed in the case of wear on the end stop, the armature plate is assigned a second stop surface which upon a predefined wear on the first stop surface forms a downstream end stop.

Abstract: An object of the present invention is to provide a fuel injection valve configured to suppress bouncing of a valve element that is caused as a result of the valve element being rendered elastic when the valve element collides with a valve seat. The fuel injection valve of the present invention includes the valve element configured to come into contact with the valve seat for closing an injection hole and to separate from the valve seat for unclosing the injection hole, an elastic member urging the valve element toward the valve seat, a movable iron core disposed to be in and out of contact with the valve element, a fixed iron core disposed to be opposed to the movable iron core, and a coil configured to generate electromagnetic force for moving the movable iron core.

Abstract: A filling apparatus used in an evaporator system and a filling method are provided. The filling apparatus includes: a filling bottle, a magnetic cover plate, an evaporation material trough and a magnetic induction drive unit, wherein the magnetic cover plate is provided at an opening of the filling bottle, in operation the opening of the filling bottle is provided to orientate the evaporation material trough, the magnetic induction drive unit is disposed outside of the opening, and configured to be capable of driving the magnetic cover plate to open and close.

Abstract: A dispensing system comprises a solenoid valve that includes an inlet end adapted to be attached to a container such that a valve stem thereof is held in an open state. A flow adapter includes a cylindrical wall and a post mounted within the cylindrical wall to define an annular passage therebetween. An inlet end of the flow adapter is sealingly attached to an outlet end of the solenoid valve, and the flow adapter is adapted to receive a spray insert within the annular passage.

Abstract: The present invention includes a bobbin having a winding part around which a coil winding is wound, a terminal extending from the bobbin in the axial direction of the bobbin, and a wrapping part which is provided to the terminal and in which a terminal lead wire pulled out from a coil part that is wound around the winding part is wrapped and fused. The terminal lead wire wired between the bobbin and the wrapping part in a state of being in contact with the surface of the terminal. The peripheries of the bobbin, the wiring part of the terminal lead wire and the wrapping part are covered with resin.

Abstract: A valve body for a fluid injector includes a central longitudinal axis and a one-piece base body. The base body has a side wall defining a recess extending from a fluid inlet side to a fluid outlet side of the base body. The side wall has a thin portion having a decreased wall thickness relative to further portions of the side wall that adjoin the thin portion along the longitudinal direction towards the fluid inlet side and the fluid outlet side. The valve body includes a metallic reinforcement jacket that is rigidly coupled to the base body and which axially overlaps the thin portion having the decreased wall thickness.

Abstract: A fuel metering valve includes a main flow path extending axially between an inlet and an outlet. Also included is a plunger disposed around a portion of a plunger guide, the plunger and the plunger guide configured to translate between an open position and a closed position to selectively distribute a fuel flowing through the main flow path to the outlet of the fuel metering valve. Further included is a solenoid coil disposed between a solenoid outer body and a solenoid inner body, the solenoid coil configured to magnetically attract the plunger to the open position. Yet further included is a secondary flow path for routing a stagnant volume of fuel upon translation of the plunger from the closed position to the open position.

Abstract: A power versatile and energy efficient electric coaxial valve is a dual magnetic latching electric tube-type valve having an electrically pulsed actuated permanent electromagnet with an armature having three active poles to increase the magnetic force of the armature provided by permanent magnets for energy efficiency. The electric coaxial valve is augmented with a balanced spring means that works in concert with the armature to increase the internal force and tube movement distance, while reducing the energy needed to operate the valve. The increased magnetic force, internal force, and tube movement distance provide a coaxial valve that can have increased pressure or flow area. The valve is power versatile in that the pulsed electric means used to operate the valve is power versatile.

Abstract: It is to realize a valve remote control apparatus capable of driving and controlling, with wireless signals, an air motor configuring an automatic switch to be attached to a manual valve. A valve remote control apparatus is configured to mechanically connect, to a manual operating portion 11 of an existing manual valve 10, an output shaft 21a of an air motor 21 using an air pressure as a drive source, and to remotely control the manual value 10. The valve remote control apparatus includes a solenoid valve (operating valve 53) operated by an operation signal transmitted and received wirelessly between a contact information terminal portion 51 and a contact information operating portion 52. The air pressure for driving and rotating the air motor 21 is supplied via the solenoid valve (operating valve 53).

Abstract: An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. An electromagnet is positioned within the housing and includes a cylindrically-shaped coil of wire. The valve member moves between a seated position and an unseated position in response to energizing the electromagnet. A flux sleeve passes through the coil and includes two magnetic portions interconnected by a flux bridge portion or a flux break portion. Each of the magnetic portions is aligned with transverse planes defined by the ends of the cylindrical coil. The flux bridge portion or flux break portion is axially positioned between the transverse planes.

Abstract: A valve assembly of an injection valve may include a valve body having a cavity forming an inner guide surface and having a fluid inlet portion and a fluid outlet portion, a valve needle in the cavity that controls a fluid flow through the fluid outlet portion, the valve needle having an upper end facing the fluid inlet portion and an inner recess extending from the upper end and enabling a fluid flow inside the valve needle. A guide element in the cavity is mechanically coupled to the upper end of the valve needle and extends radially to the inner guide surface of the valve body and guides the upper end of the valve needle inside the valve body. The guide element forms a one-piece extension of the valve needle with an inner recess hydraulically coupled to the fluid inlet portion and the inner recess of the valve needle.

Abstract: A fuel injection valve for injecting fuel includes: a coil, an internal pole, a valve sleeve, and a magnetic separating element, where the valve sleeve and the magnetic separating element are embodied in one piece as a powder injection-molded component, and the valve sleeve forms a magnetic region and the magnetic separating element forms a non-magnetic region, which are intermaterially joined to one another.

Abstract: A gas valve having a valve body that at least partially defines a gas enclosure. The valve body has an intake, an outlet and a hole for communicating the outlet with the intake. A valve seat within the gas enclosure cooperates with the hole to permit or to prevent the passage of gas through the hole. An electrically activated actuator, when activated, is configured to move or keep the valve seat in the open position. The gas valve includes connection means that connect the actuator to the outside of the gas valve, the connection means being disposed at least in part on a metal core printed circuit board. The printed circuit board is soldered to a metal structure located within the gas enclosure to at least partially seal the gas enclosure, the metal structure supporting, at least in part, the electrical actuator.

Abstract: In an electromagnetic fuel injection valve including a magnetic coil housing (31) having a coil assembly (28) housed therein, the coil housing (31) includes the first and second coil housing half bodies (31a, 31b) whose cross sections are each shaped like an inferior arc, and which are oppositely disposed so as to interpose the coil assembly (28) and a coupler (34), each of the coil housing half bodies (31a, 31b) includes: a barrel portion (44) for covering an outer peripheral surface of the coil assembly (28); a front-end wall portion (45) and a rear-end wall portion (46) which are in contact with front-end and rear-end surfaces of the coil assembly (28); a front connection cylindrical portion (47) welded to the outer peripheral surface of the magnetic cylindrical body (4); and a rear connection cylindrical portion (48) welded to the outer peripheral surface of the fixed core (5); both the coil housing half bodies are formed symmetrically; and one half part and the other half part of each of the coil housing

Abstract: An electromagnetic switch is provided which includes: a coil generating magnetomotive force; a frame accommodating the coil and generating a flux path; a resin cover covering an opening of the frame; and a current-supply terminal member energizing the coil. The current-supply terminal member includes: a blade-shaped terminal whose end is connected to the coil and whose another end is drawn out of the resin cover in the axial direction of the electromagnetic switch; and a plate-shaped external connection terminal whose end is joined to an end of the blade-shaped terminal and whose another end is drawn out in the direction intersecting the axial direction. A portion between the ends of the external connection terminal is insert-molded in a terminal anchor block provided with the resin cover. A female terminal of a power supply connector provided at an electric supply line is fitted and electrically connected to the external connection terminal.

Abstract: A magnet valve has a core sleeve in which a valve element is longitudinally movably arranged and has at least one housing sleeve overlaying the core sleeve which is connected to the core sleeve by welding from the outside. The weld is designed via a circumferential section or a plurality of circumferential sections of the housing sleeve forming at least one weld-free zone. A method for welding such a core sleeve of a magnet valve to the housing sleeve is also disclosed. The weld is made via a circumferential section or a plurality of circumferential sections of the housing sleeve, leaving at least one weld-free zone.

Abstract: A fuel injector for fuel injection systems of internal combustion engines has a solenoid operable via an electric wire, a valve sleeve in an injection-side area forming an external sheathing of the fuel injector, and a valve housing. The fuel injector has a plastic sleeve, which contains the solenoid and the electric wire and can be pushed onto the valve sleeve.

Abstract: A fluid control valve includes an inflow channel for introducing fluid, an outflow channel for discharging the fluid, a valve seat, a valve body for blocking/allowing communication between the inflow channel and the outflow channel in association with a movement thereof into contact with or away from the valve seat, and a solenoid configured to apply a magnetic force to the valve body, the magnetic force being generated in response to supply of electric power to the solenoid. The inflow channel is formed through the core of the solenoid so that the core and the fluid comes into contact with each other in the inflow channel.

Abstract: A pressure relief valve includes an outer frame, a ferromagnetic cylinder, a plastic air faucet, an electrical coil module and a spring. The plastic air faucet has a first end extending through a through hole of the outer frame and a second opposite end extending through a hollow channel of the ferromagnetic cylinder. The electrical coil module is located within the outer frame and has a central passage allowing the ferromagnetic cylinder to be accommodated inside. The ferromagnetic stopper is slidable along the central passage of the electrical coil module, wherein the ferromagnetic stopper has a seal gasket. The spring is located between the air faucet and the ferromagnetic stopper. When the electrical coil module is electrified, the ferromagnetic stopper and the ferromagnetic cylinder attract each other to against the resilient force of the spring to push the seal gasket against the air opening of the air faucet.

Abstract: A glue valve with electromagnetic actuation of a valve tappet (15) having a valve housing (10), which has a lateral aperture which is open in the upward direction, that is to say a side opening (36). A coil core (13) and a transversely directed carrying crosspiece (26), on which a plug (22) can be fitted, form a unit, that is to say a coil unit (21), which can be introduced into the valve housing (11) in one operation, via the side opening (36) which is open in the upward direction.

Abstract: An injector for injecting a reagent includes an axially translatable valve member positioned within a housing. An electromagnet is positioned within the housing and includes a cylindrically-shaped coil of wire. The valve member moves between a seated position and an unseated position in response to energizing the electromagnet. A flux sleeve passes through the coil and includes two magnetic portions interconnected by a non-magnetic portion. Each of the magnetic portions is aligned with transverse planes defined by the ends of the cylindrical coil. The non-magnetic portion is axially positioned between the transverse planes.

Abstract: A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. A first coil receives a first signal from a driver to generate a first magnetic field that moves an armature between an open and closed position. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The alternating current signal produces a time varying second magnetic field that induces heating of a magnetically active component with the fuel flow that in turn heats the fuel.

Abstract: An electromagnetic pressure regulating valve includes a valve body and causes a valve body to move by an electromagnetic proportional solenoid to adjust an opening degree of a valve passage, thereby regulating secondary pressure to target pressure. A pressure return chamber is formed in the housing, and a diaphragm seal is provided at the valve body. The diaphragm seal receives the secondary pressure of the pressure return chamber to cause the valve body to move toward a closed position. A bearing member is provided between the valve body and the housing. In a gap between the valve body and the housing, a high-pressure sealing member is provided closer to the valve passage than the bearing member, and a low-pressure sealing member is provided closer to the bearing member than the high-pressure sealing member. A buffer chamber connected to a secondary port is formed between the sealing members.

Abstract: An electromagnetic hydraulic valve or solenoid having an electric plug, housing, magnetic coil, armature and armature pin, valve body and associated valve seat and valve plate and associated valve seat, the valve plate axially retained, but, freely floating laterally within the housing, such that the valve plate and valve plate seat is movable to align with the valve body and valve body seat.

Abstract: The magnetically actuable valve has an interior space which is surrounded by a magnetizable wall and in which a valve body can move, closing a valve opening in the closed position. The magnetic circuit includes at least one intermediate piece made from nonmagnetic material, while the wall and the valve seat consist of magnetizable material. As a result of the valve body being arranged eccentrically or as a result of the intermediate pieces being arranged asymmetrically, the magnetic flux density is increased on one side, so that the valve body moves onwards towards this side from the valve opening.

Abstract: The invention relates to a valve having a closure element which is movable in an inner chamber and closes or clears a valve seat. The closure element is activated by a magnetic assembly in the magnetizable wall surrounding the inner chamber. According to the invention, the closure element has a low density. It comprises a hollow body having at least one activator body made of magnetizable material that is freely movable therein. The closure element has a low weight and a large surface. The large surface facilitates the resetting of the closure element on the valve seat by the action of the flowing medium.

Abstract: A metering valve includes a valve body, a flow tube, an orifice plate, a central flow body, and a mover. The valve body has an inlet and an outlet. The flow tube is carried for axial movement in slidable and sealing engagement with the valve body at an inlet end and an outlet end. The orifice plate has an outlet. The central flow body is provided on an upstream end of the orifice plate and has an annular seal configured to seat into engagement with the outlet end of the flow tube when the flow tube is moved to a downstream position. The central flow body also includes a central, protruding flow diverter upstream and central of the annular seal. The mover is provided in the valve body and is configured to carry the flow tube for displacement of the output end toward and away from the central flow body.

Abstract: An adjustable electromagnetic fluid flow control valve includes: a tubular member of non-magnetizable material. One end of the tubular member is forming an inlet and serves as the main entry port for: gases or other fluids entering the valve. The opposite end of the tubular member is forming an outlet The valve includes at least one annularly configured electromagnetic coil which is surrounded from outside and partially inside by a core preferably built from ferrous laminations. The coil is connected to a power supply and can be energized by the power supply under control of a controller: A disk occluder of a magnetic material has diameter corresponding to the internal diameter of the tubular member. The occluder is disposed Within the tubular member and occludes the fluid flow when is positioned perpendicular to the longitudinal axis of the tubular member. The occluder rests on a supporting non-magnetic-member with at least one passageway for fluid flow.

Abstract: A cryogenic valve includes a first port and a second port, a valve body, a valve stem, a sealing member, a valve element and a housing. The valve body includes a valve seat defining a fluid orifice in fluid communication with the first port. The valve stem is configured to engage with the valve body, wherein at least one of the valve stem and valve body form an inner valve cavity. The valve element is positioned within the inner valve cavity. The valve element is also configured to bias the sealing member against the orifice to substantially block flow through the orifice and the first port. The bias is controlled in response to control of the valve element by a valve actuator. A channel is configured to allow fluid flow through at least one of the valve stem and valve element along a longitudinal axis. A housing is configured to substantially seal and enclose at least a portion of the valve body and valve stem.

Abstract: The invention relates to a locking device for a lock opening which is arranged in a wall between a first and a second recipient, said lock opening comprising a blocking element, which is arranged in the inner chamber of the first recipient, and a counter-plate which is associated with the blocking element. A first magnet device is provided in an area of the counter-plate and a second magnet device, which is associated with the first magnet device, is provided in the region of the blocking element. In order to close and/or open the locking device by means of the first and second magnet device, a positive and/or negative contact pressure can be produced between the blocking element and the counter-plate.

Abstract: In an electromagnetic fuel injection valve, a valve housing includes: a cylinder-shaped valve seat member having a valve seat in its front end portion; a magnetic cylindrical body coaxially connected to a rear end portion of the valve seat member; a nonmagnetic cylindrical body coaxially and liquid-tightly welded to a rear end of the magnetic cylindrical body; and a hollow cylindrical stationary core coaxially and liquid-tightly welded to a rear end of the nonmagnetic cylindrical body. A valve assembly is housed in the valve housing and includes: a valve body capable of being seated on the valve seat; and a movable core connected to a rear end of the valve body and opposed to a front end of the stationary core. The valve body and the valve seat member are respectively made of different martensitic stainless steels so that a hardness of the valve body is higher than that of the valve seat member.

Abstract: An electromagnetically actuatable valve, e.g., a fuel injector for fuel injection systems, includes an electromagnetic actuating element having a solenoid, a fixed core, a valve jacket, and a movable armature for actuating a valve closing body, which cooperates with a valve seat surface provided on a valve seat body. In addition, the valve has a restoring spring for resetting the valve closing body to its resting position on the valve seat surface. The restoring spring and an internal longitudinal bore hole of the armature are paired in such a way that the armature is guided during its axial movement only along the restoring spring.

Abstract: A solenoid comprises at least one armature supported in an armature space. The armature space is encircled by a coil carrying a number of windings which can be loaded with current. The magnetic field generated by it moves the armature against the core. The armature acts on a pin. The armature has on its front seen in the direction of movement a recess in which a structural part is set. The pin is supported on the structural part.

Abstract: A pressure reducer having a high pressure inlet, a low-pressure outlet and a valve having a valve seat and a cooperating movable piston valve. With displacement of the piston valve away from the valve seat, a path between the high pressure inlet and the low pressure outlet is opened. In addition, a closing force caused by a low pressure acts on the piston valve towards the valve seat during operation of the pressure reducer. A spring is also provided for the purpose of exerting an actuating force on the piston valve to move away from the valve seat in the valve opening direction. A solenoid coil is configured to exercise a magnetic force superimposed on the closing force or the actuation force acting on the valve piston.

Abstract: A bistable valve (100) is provided according to an embodiment of the invention. The bistable valve (100) includes an armature (108) movable to selectively block and unblock at least a first port (104) and a biasing device (112) configured to provide a first biasing force that biases the armature (108) toward a first position blocking the first port (104). The bistable valve (100) further includes a plurality of substantially radially magnetized permanent magnets (114) configured to provide a second biasing force to the armature (108) substantially opposite to the first biasing force and an electromagnetic coil (116) configured to generate a third biasing force when energized with a first current polarity. The third biasing force is substantially opposite to the first biasing force and in combination with the second biasing force overcomes the first biasing force and moves the armature (108).

Abstract: A two-stage solenoid valve for an electropneumatic valve control unit, e.g., a pilot control unit of a pressure modulator, includes a solenoid system to which a first and second current intensity can be applied as well as a solenoid valve device with a primary side connectable to a first compressed-air supply and a secondary side connectable to a second compressed-air supply. A primary valve encompassing an adjustable primary armature biased by a primary armature spring is provided on the primary side, and a secondary valve encompassing an adjustable secondary armature biased by a secondary armature spring is provided on the secondary side. The solenoid valve device can be a valve cartridge insertable from one side. Diameters of a front (in relation to insertion direction) region and a central region of the valve cartridge are smaller than or equal to the diameter of a rear region of the valve cartridge.