Abstract: A method of valving a fluid device includes receiving a signal that is correlated to a displacement of a volume chamber of a displacement assembly of a fluid device. A check ball is delatched from a magnetic pole of a first latch valve that is in fluid communication with the volume chamber and a fluid inlet of the fluid device when the displacement of the volume chamber reaches a first value. A check ball is delatched from a magnetic pole of a second latch valve that is in fluid communication with the volume chamber and a fluid outlet of the fluid device when the displacement of the volume chamber reaches a second value.

Abstract: A thin film bio valve device and an apparatus for controlling the thin film bio valve device are effectively applied in a valve structure of a thin film device, such as a lab-on-a-chip, a protein chip, or a DNA chip, for diagnosing and/or detecting a small amount of material in a fluid.

Abstract: A valve closure system particularly suited to reciprocating compressors employs no springs and preferably urges the valve in the closed direction by the force generated from magnets positioned to repel each other and in that manner deliver the force to keep the compressor valve closed. Other applications are envisioned and different techniques for replacing the spring component in such valve assemblies are also contemplated.

Abstract: A driving mechanism (100) includes a first rotor (10) that rotates around a first shaft L1 and a second rotor (20) that rotates around a second shaft L2 that is provided in parallel with the first shaft L1. The first rotor (10) includes a guide (13) that extends in a circular arc around the first shaft L1 and a drive pin (14) that is provided outside the guide (13) relative to the first shaft L1. The second rotor (20) includes a first member (40) with a plurality of leads (41) that extend in the radial direction from the second shaft L2 and a second member (50) that is provided between the first rotor (10) and the first member (40), that moves together with the first member (40), and that includes a plurality of first surfaces (51) with substantially the same curvature as a circular arc-shaped outer surface (13b) of the guide (13).

Abstract: An electrodynamic drive of a compact design is provided, particularly for a respiration system dispensing valve. The electrodynamic drive has a velocity measuring system that is uncoupled from the electrodynamic drive. The velocity measuring system is provided directly above a moving coil system, wherein the velocity measuring system has a short-circuit sleeve (15) for forming a separate magnetic circuit (221).

Abstract: Disclosed are a water tank and a refrigerator having the same. The water tank includes a tank main body provided with a water storage space formed therein and a discharge hole; a tank cover connected to the tank main body for opening and closing the water storage space; a valve movably installed in the tank main body for opening and closing the discharge hole; and a valve driving unit moving the valve using magnetic force so as to cause the valve to open and close the discharge hole. The water tank is opened and closed by the magnetic force of magnets and the restoring force of elastic members, and thus it is possible to prevent water stored in the water tank from leaking out in a process of attaching or detaching the water tank to or from the rear surface of a door or a refrigerator.

Abstract: A magnetic actuator (1) comprising a stationary part (3), a movable part (4) and a coil (10) arranged circumferentially relatively to the movable part (4) in such a manner that the movable part (4) is moved relatively to the stationary part (3) in response to a magnetic field induced when an electrical current runs in the coil (10). The stationary part (3) and the movable part (4) are shaped in such a manner that one is provided with a protruding part (5) and the other is provided with a recess (6) adapted to receive the protruding part (5). Thereby the minimum distance between the stationary part (3) and the movable part (4) are kept relatively low, and it is thereby possible to obtain a large pulling force without increasing manufacturing costs. The actuator (1) further comprises a shading ring (7) providing a magnetic field having a phase which is different from the phase of the field induced by the coil (10).

Abstract: A controllable valve is provided for a low-flammability fluid within an aircraft with at least one magnetic coil which, upon brief electrical excitation, moves a structural element provided therein from a first position to a second position in which the structural element is held by a permanent magnet after completion of the electrical excitation of the magnetic coil.

Abstract: Provided are a thin film valve device and a thin film valve control apparatus in which a hole or a channel in the body of the thin film valve device is opened and closed using the heat generated from a heat generating apparatus and the centrifugal force. The thin film valve device and the thin film valve control apparatus are applicable to, for example, a diagnostic lab-on-a-chip that can detect a trace amount of a material in a fluid, a rotatable bio-disc in which a bio chip, such as a protein chip and a DNA chip, is integrated, and the like.

Abstract: A teeter-totter valve device for metering magnetic particles from a hopper includes (i) a tube connected to the hopper for flow of magnetic particles out of the hopper; (ii) a teeter-totter member having a first arm including a first distal end, and a second adjustable arm including a second distal end; (iii) a support assembly supporting the teeter-totter member on and spaced from the tube; (iv) a first magnet located at the first distal end; (v) a second magnet located at the second distal; and (vi) a moving assembly for moving each of the first magnet and the second magnet towards and away from a first near point and a second near point on the tube to create or remove a point magnetic field and magnetic particles dam within the tube, thereby stopping or allowing flow of a desired quantity of magnetic particles past the first near point and past the second near point.

Abstract: An automate fluid flow control system includes a valve member for being sealedly disposed within a fluid chamber to seal a flow of fluid flowing from a fluid inlet to a fluid outlet, a relief valve having a fluid passage extended along the valve member for communicating the fluid chamber with the fluid outlet and including a valve stopper sitting on a top opening of the fluid passage to sealedly close the fluid passage, and a powering assembly including an actuator to move the relief valve between a closed position that the valve stopper is sealedly retained to close the fluid passage and an opened position that the actuator drives the valve stopper to unseal the fluid passage for releasing a pressure within the fluid chamber to allow the fluid passing to the fluid outlet.

Abstract: Flow rate control valve includes: a target probe formed of a magnetically-responsive substance and mounted to one end of a spool; a sensor housing mounted to the one end of the sleeve and having a cylinder section defining an inner space to permit entry therein of the target probe; and first and second coils provided around the cylinder section and axially spaced from each other by a predetermined distance. The probe is constructed so that magnetic response of the coils gradually varies in one direction in response to a linear position of the target probe. The first coil responds to the target probe, while the second coil dose not respond to the target probe. Impedance of the first coil varies with a linear position of the probe (31), and the linear position of the probe is detected through differential synthesis performed between outputs of the first and second coils.

Abstract: The invention relates to a method and a device for producing a high-pressure-tight connection between a pole core and a valve sleeve of a solenoid valve and to an associated valve cartridge for a solenoid valve. According to the invention, the pole core is placed in a two-part compression mold, which comprises a middle die and an outer die, in such a way that a joining gap is produced between an inner bore of the outer die and the placed-in pole core. Subsequently, the pole core is placed against the valve sleeve and the valve sleeve is inserted into the joining gap. Then, the middle die and the outer die are pressed simultaneously with the pole core such that the valve sleeve passes into the joining gap. When a pressed diameter of the pole core is reached, the valve sleeve expands and is shaped in the joining gap between a first shaping edge and a second shaping edge and is joined onto the pole core. The diameter of the inner bore tapers between the first shaping edge and the second shaping edge.

Abstract: A method and system for fine-tuning the motion of suction or discharge valves associated with cylinders of a reciprocating gas compressor, such as the large compressors used for natural gas transmission. The valve's primary driving force is conventional, but the valve also uses an electromagnetic coil to sense position of the plate (or other plugging element) and to provide an opposing force prior to impact.

Abstract: An ink jet type recording apparatus comprises a connection member which has a passage for leading ink to a recording head from an ink cartridge. In the passage, a valve member having a magnetic body is provided. A rotation member has a permanent magnet and is rotatable between a first position and a second position. When the rotation member is located in the first position, an attraction that can move the valve member in an opening direction of the passage acts between the magnet and magnetic body, and hence, the valve member opens the passage. When the rotation member is located in the second position, the attraction that can move the valve member does not act between the magnet and magnetic body, and hence, the valve member closes the passage.

Abstract: The present invention is directed to a valve that has an orifice closing member adjacent to an orifice through which fluid can flow, a displacement member having a first portion and a second portion, where the first portion is adjacent to the orifice closing member when the valve is in an open position, a first magnet and a second magnet where the first and second magnets are sufficiently proximate to the displacement member to exert a magnetic force on the displacement member, and an actuator for generating a magnetic field to move the displacement member toward the first magnet, cause the first portion to press against the orifice closing member, and cause the orifice closing member to close the orifice.

Abstract: An occlusion valve with safety relief comprising a manifold block having an inlet and an outlet. A diaphragm connected to the manifold block and for being manually pressed to stop flow between the inlet and the outlet. A pressure relief valve internal to the manifold block and in fluid communication with downstream and upstream pressures and wherein when the diaphragm is pressed and downstream pressure exceeds a predetermined pressure the pressure relief valve opens allowing flow through the occlusion valve with safety relief.

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: This invention provides microfluidic devices that comprise a fluidics layer having microfluidic channels and one or more regulating layers that regulate the movement of fluid in the channels. The microfluidic devices can be used to mix one or more fluids. At least a portion of the fluidics layer can be isolated from the regulating layer, for example in the form of a shelf. Such isolated portions can be used as areas in which the temperature of liquids is controlled. Also provided are instruments including thermal control devices into which the microfluidic device is engaged so that the thermal control device controls temperature in the isolated portion, and a movable magnetic assembly including magnets with shields so that a focused magnetic field can be applied to or withdrawn from the isolated portion or any other portion of the microfluidic device. Also provided are methods of mixing fluids.

Abstract: A mud saver valve for retaining drilling fluid in the Kelly of a rotary drilling rig for insertion into a Kelly sub with an enlarged opening inside having a valve and hollow piston closing the flow in a first position and having flow through when the hollow piston is moved by flow against a spring to an open position compressing a spring to stack height, the spring being magnetized to provide magnetic latching to assist in holding the hollow piston in the open position at flow rates lower than it would otherwise be held open.

Abstract: In one embodiment of the present invention, an apparatus for one-step flow control at a micro-channel crossing comprises a first micro-channel and a second micro-channel, a plurality of magnetic valves, and a guiding magnet. The guiding magnet produces a proximal magnetic field gradient at a location of each of the plurality of magnetic valves when an operator places the guiding magnet in a vicinity of the chip. The vicinity of the chip comprises a plurality of guiding magnet position ranges. The operator repositions guiding magnet in order to actuate the plurality of magnetic valves simultaneously. Depending on the position of the guiding magnet, the passages are blocked or unblocked to stop or let the fluid flow in a given crossing.

Abstract: The invention relates to a valve particularly for transferring small portions of glue onto folding tabs of (cigarette) packs. A closing element (15) of the valve is actuated by different elements, that is to say, is moved between the open and closed positions, on the one hand by two permanent magnets (24, 25) arranged a short distance from each other and having aligned poles such that the closing element is permanently kept in the closed position by the permanent magnets (24, 25). On the other hand, an actuating element, which is configured as an electromagnet (23), acts to move the closing element (15) into the open position in a controlled way by overcoming the closing forces. The closing element (15) is designed in a particular way, that is to say, with channels extending along the outside in the longitudinal direction for the medium or the glue.

Abstract: The invention relates to a valve (1), comprising a body (2), within which a needle (3) moves, which can rest with sealing against a seat (23), fixed to the body (2). The needle (3) is magnetically coupled to an actuator body (5), across a closed and a magnetic chamber (4) provided with several magnets (52) between which magnetic bodies (53) are interspersed. The needle (3) has no magnets and is provided with ribs (36) made from a magnetic material. According to the invention, an improved magnetic coupling may be achieved, whereby the thickness and the relative separation of the ribs (36) are largely equal to the thickness (e53) and the relative separation (l52) of the magnetic bodies (53).

Abstract: The magnetic actuator device of the invention comprises a magnetic field generator external to the duct and a permanent magnetic field generator internal to the duct, separated from the magnetic field generator external to the duct by a non-magnetic separator wall, and connected to a moving member, the permanent magnetic field generator internal to the duct being dimensioned to have a face spaced apart from the separator wall so as to define a space that can receive particles of metal without the actuator device jamming.

Abstract: The invention relates to a valve comprising a thimble (3), with an opening (3.1) at one end thereof and a plunger (4) arranged inside the thimble (3) and provided with a stopper (4.1) capable of stopping said opening (3.1). The ratio between the diameter (Do) of the passage surface (So) and the depth (P) of said opening is by far higher than 1, and the stopper is capable, in the stopping position, of coming flush with the outer surface (9) of the thimble in the vicinity of said opening.

Abstract: An outboard marine engine has vapor vent control apparatus including a fuel inlet in fluid communication with a fuel reservoir of the engine. The fuel inlet is operably attachable to a fuel pin of a fuel connector. When attached, liquid fuel flows to the fuel reservoir and when detached, liquid fuel flow out of the fuel inlet is prevented. A vapor vent passage is configured in fluid communication with the liquid fuel reservoir and an air intake of the engine. A vent pin is disposed in the vapor vent passage. The vent pin moves between a first position upon attaching the fuel connector to the fuel inlet and a second position upon detaching the fuel connector from the fuel inlet. In the first position, the vapor vent passage is open to fuel vapor flow and, when in the second position, the vapor vent passage is closed to fuel vapor flow.

Abstract: A magnetic valve arrangement for controlling flow of fluid, the magnetic valve arrangement having at least one ferromagnetic element (28, 42, 52) forming a portion of a magnetic circuit, a valve member (28, 50) and a valve seat (35); the valve member (28, 50) has a passage (31) therethrough for the flow of fluid and is moveable between a first position, in which the valve member (28, 50) abuts the valve seat (35) to restrict a fluid flow (26), and a second position, in which the valve member (28, 50) is spaced from the valve seat (35) to allow a fluid flow (26) into and through the passage (31) in the valve member (28, 50), wherein the position of the valve member (28, 50) is dependent on the temperature of the ferromagnetic element (28, 42, 52).

Abstract: The present invention provides for a magnetic apparatus and a method of manufacturing the magnetic apparatus including a magnet having an outer surface and an inner surface opposing each other with the inner surface having a first portion and a second portion integrally connected to and facing each other and utilizing a fluid and a fixture body defining a hole along a fixture axis and a deflector disposed within the hole. The method includes the steps of installing the magnet on the fixture body and securing the magnet to the fixture body. The method further includes the steps of flowing the fluid through the magnet transverse to the fixture axis to form at least one aperture and intersecting the fluid with the deflector to redirect the fluid generally along the fixture axis.

Abstract: A nozzle (11), for example for a liquid fuel delivery system, has a shut-off valve (17) closed by a magnetic closing force. In the open condition the valve (17) moves against a closing spring (31); the magnetic force weakens as the spring force increases.

Abstract: A fluid flow control valve is disclosed. This valve includes a housing which defines a central passageway having fluid inlet and fluid outlet openings. A pressure responsive element is disposed within the passageway for selectively opening and closing the inlet opening to fluid flow in response to pressure exerted thereon at the inlet opening. A mechanism is provided within the passageway for exerting a bias force against the pressure responsive element sufficient to close the inlet opening to fluid flow absent a pre-established level of pressure exerted on the pressure responsive element in opposition to the bias force. Finally, a retainer device is positioned for removably securing the pressure responsive element and bias force exerting mechanism within the passageway.

Abstract: An electromotive refrigerant control valve is disclosed, in which the refrigerant supplied from the condenser is supplied to the evaporator for the cooling chamber or the evaporator for the freezing chamber based on the four operation modes. The four operation modes are a cooling/freezing mode in which the refrigerant is concurrently supplied to the cooling chamber evaporator and the freezing chamber evaporator, a cooling mode in which the refrigerant is supplied to only the cooling chamber evaporator, and the refrigerant is not supplied to the freezing chamber evaporator, an idle mode in which the refrigerant is not concurrently supplied to the cooling chamber evaporator and the freezing chamber evaporator, and a freezing mode in which the refrigerant is supplied to only the freezing chamber evaporator, and the refrigerant is not supplied to the cooling chamber evaporator.

Abstract: Fluid sensing shut-off devices with timer and methods of operation to shut off fluid flow if a primary shutoff valve sticks in the on condition. An embodiment is disclosed using a microphone to sense fluid flow, with a microprocessor periodically awakening from a sleep mode to power the sensor and determine if there is flow. If there is flow, the microprocessor times flow, and if flow is not shut off within a predetermined length of time, the microprocessor shuts off the valve. The valve itself normally held in a magnetically latched, valve open state, but may be unlatched by a current pulse to close the valve. Various embodiments and applications are disclosed.

Abstract: An ink jet type recording apparatus comprises a connection member which has a passage for leading ink to a recording head from an ink cartridge. In the passage, a valve member having a magnetic body is provided. A rotation member has a permanent magnet and is rotatable between a first position and a second position. When the rotation member is located in the first position, an attraction that can move the valve member in an opening direction of the passage acts between the magnet and magnetic body, and hence, the valve member opens the passage. When the rotation member is located in the second position, the attraction that can move the valve member does not act between the magnet and magnetic body, and hence, the valve member closes the passage.

Abstract: A magnetic drive for a valve, in particular for a pneumatic or hydraulic valve, includes a movable armature (14) and a permanent magnet (20). The permanent magnet (20) is formed from a magnetic paste or a magnetic foil. In preferred embodiments, the permanent magnet (20) is integrated into the movable armature (14) and cooperates with a fixed solenoid.

Abstract: A valve assembly is provided that includes a flowbody, a valve element movably disposed within the flowbody, and a magnetically-energized seal mechanism. The magnetically-energized seal mechanism includes a wiper seal carried by one of the flowbody and the valve element and movable between a retracted position and an extended position. A first magnetic element is fixedly coupled to the wiper seal, and a second magnetic element is fixedly coupled to one of the flowbody and the valve element. The second magnetic element magnetically repels the first magnetic element to bias the wiper seal toward the extended position.

Abstract: An object of the present invention is to obtain a quick-response fluid control valve. A fluid control valve includes a pressure chamber including an output port; an air supply nozzle and an air exhaust nozzle which are communicatively connected to the pressure chamber and positioned on a common straight line; a flapper assembly which is movable between the air supply nozzle and the air exhaust nozzle and includes a pair of opening/closing control surfaces that face an opening end of the air supply nozzle and an opening end of the air exhaust nozzle, respectively; and a flapper-assembly moving mechanism which moves the flapper assembly so that a distance between the opening end of the air supply nozzle and one of the pair of opening/closing control surfaces increases while a distance between the opening end of the air exhaust nozzle and the other of the pair of opening/closing control surfaces decreases.

Abstract: A flow responsive valve for a flow metering system comprising a fluid meter having a minimum measuring flow threshold. The valve is shiftable between an open position at flow rates above the minimum measuring flow threshold, and a pressure pulsating position depending on pressure differential over an inlet port and an outlet port of the valve. The pressure pulsating position alters between a closed position essentially prohibiting fluid flow therethrough at flow rates below the minimum measuring flow threshold, and an open position admitting fluid flow into the supply line at a measurable flow rate above the minimum measuring flow threshold.

Abstract: A pilot controlled pulse valve has a valve spool releasably held in both terminal positions by a latching device. The latching device comprise a permanent magnet holding the valve spool by magnetic force. To set the terminal or end position the permanent magnet has an abutment placed to the fore of it. In order to protect the permanent magnet against damage the abutment bears against the valve housing independently of the permanent magnet.

Abstract: Provided is a reversing valve that can reverse flow in a refrigeration system. The reversing valve includes a valve body extending between a first end and an opposing second end. Multiple ports are disposed through the first and second ends. In one aspect, to reduce the pressure drop across the valve body, flow is channeled generally straightly between the ends. This is accomplished by a valve member defining a channel that is coupled to a port at the first end while pivotally movable to intersect different ports at the second end. Flow direction in the system is determined by which port at the second end is intersected. In another aspect, to move the valve member, the reversing valve includes a permanent magnet joined to the valve member and an electromagnet extending partly around the valve body. Applying different polarities to the electromagnet moves the permanent magnet and the valve member.

Abstract: This invention provides a fire hydrant security system with an inner cap having means for attaching an outlet port of a fire hydrant in a fixed position which includes a member capable of extending from the periphery of the inner cap into a slot in the inner part of an outer cap and having means for retracting and retaining the position of the member in the inner cap, wherein said outer cap includes means for attaching the outer cap to the inner cap so that the outer cap can spin freely with respect to the inner cap, and a key wrench having means for fitting the key wrench over the outer cap and for aligning the outer cap and key wrench in a fixed position wherein the key wrench has a magnet located on the wall of the key wrench that becomes aligned with a slot on inner wall of the outer cap and wherein the rotation of the key wrench causes the magnet to align with the member and to extend the member into the slot on the inside of the outer cap thereby joining the outer cap to the inner cap.

Abstract: A flow adjusting valve for combustion gas being provided with an air chamber between its air intake port and its air output port, the air chamber has an inlet connecting with the air intake port, and the air chamber is provided with a valve plug to block between the air intake port and the inlet, the valve plug is always kept at a position to close the inlet of the air chamber; when the electromagnetic device is electrically turned on, it generates a magnetic repulsion force against the permanent magnet to push the valve plug to open the inlet; when a transient pressure of combustion gas is larger than the magnetic repulsion force, the valve plug will close immediately, this can prevent the situation of gas leaking induced by overly large pressure of the gas supplied.

Abstract: An ink cartridge has a housing with at least one ink container having an ink outlet extending to the outside and in which a differential pressure valve is mounted. The valve has a valve opening and a valve body which can move relative to it and which (relative to the ink chamber) sits sealed on the valve opening, loaded from the outside with a predetermined closing force, and can be moved to the outside from the valve opening against the closing force. In order to form a differential pressure valve which is stable over the long term, precise, easy to produce and install, the invention proposes that a first permanent magnet is attached to the valve body and relative to the valve opening a second permanent magnet is attached securely to the ink cartridge and is opposite the first permanent magnet with the same pole, so that the repelling force between the first and second permanent magnet acts as a closing force on the valve body.

Abstract: A valve is disclosed that includes a valve body defining an inlet and a plurality of outlets, the inlet and the plurality of outlets cooperating to form a plurality of alternative fluid flow paths through the valve body. The valve further includes an outlet selection member carried by the valve body and defining a port configured to complete a fluid flow path selected from the plurality of alternative fluid flow paths. The valve further includes a first magnet assembly configured to enable reciprocation of the outlet selection member and a second magnet assembly configured to enable rotation of the outlet selection member. A washer fluid supply system incorporating the valve and a method of operating the valve are also disclosed.

Abstract: A variable valve lift apparatus is mounted above a valve stem of a valve for opening and closing the valve. The apparatus includes an upper and a lower housing; an upper electromagnet in the upper housing; a lower electromagnet in the lower housing; at least one permanent magnet that penetrates the electromagnets; an upper plate between the permanent magnet and the upper housing; and a lower plate between the permanent magnet and the lower housing, which opens and closes the valve. The apparatus may also include an upper coil spring assembly mounted in the upper housing, and a lower coil spring assembly mounted in the lower housing, each coil spring assembly including at least two coil springs. The apparatus may also include an upper damper at the top of the upper housing, and a lower damper at the bottom of the lower housing. Oil may be provided in the housings.

Abstract: A fluid chip has a liquid support 25 for supporting a liquid 24, a fluid passage 22 formed by being surrounded by the liquid support 25 and through which the liquid 24 moves, and a plurality of magnetic particles 21 disposed in the fluid passage 24. The magnetic particles 21 are aggregated by a permanent magnet 23 so as to block the fluid passage 22 and thus cut off flow of the liquid 24. The magnetic particles 21 are dispersed along a part of a wall of the fluid passage 22 so as to open the fluid passage 22 and thus allow the liquid 24 to flow.

Abstract: Mixer for a jet spray including a regulator equipped with hot and cold water inlets, a mixed water outlet and shutters arranged between the outlet and, respectively, the hot water inlet and the cold water inlet; motorized means for actuating the shutters; an interception assembly, comprising a manifold mounted axially on the outlet of the regulator, at least one outlet, and an interceptor for blocking and unblocking the supply of water towards the outlet; and a substantially box-shaped outer housing comprising holes at which the inlets of the regulator and the outlet of the interception assembly are positioned for the hydraulic connection of the inlets and the outlet to respective hydraulic pipes

Abstract: In a magnetic transmission for coupling a valve element to a valve drive, the valve element and the valve drive are located in the same housing, the valve element includes a ring gear composed of ferromagnetic material, the ring gear and, therefore, the valve element are positioned via reluctance forces using a magnetic spindle, and the ring gear is sealed off from the spindle by a magnetically permeable housing partition.

Abstract: A fluid-handling system that, in some embodiments, includes a poppet having a body, a magnet, and a mounting member configured to secure the magnet to the body is disclosed. Additionally, a method of forming a valve is disclosed.

Abstract: A spray device is provided that includes a body portion having a fluid passageway therein. A spray nozzle is affixed to the body portion. The spray nozzle includes a discharge orifice for directing fluid from the fluid passageway in the body portion in a predetermined spray pattern. A valve needle is supported in the body portion and spray nozzle for movement between an open position for permitting fluid discharge through the discharge orifice and a closed position for preventing fluid discharge through the discharge orifice. A control piston assembly is provided for controlling movement of the valve needle. The control piston assembly is movably supported in the body portion and is non-mechanically coupled to the valve needle by magnetic attraction.

Abstract: A pressure relief check valve system includes a valve body, a flapper, a magnet, an electromagnet, and a pressure sensor circuit. The flapper is rotationally mounted on the valve body and is movable between a closed position and an open position. The magnet is coupled to the flapper, and the electromagnet is coupled to the valve body. The pressure sensor circuit is adapted to sense one or more fluid pressures and is operable, based on the one or more sensed fluid pressures, to selectively supply or interrupt the electrical current to the electromagnet. The electromagnet is coupled to receive the electrical current and, upon receipt of the electrical current, either magnetically attracts or does not magnetically attract the magnet, to thereby hold the flapper in the closed position or allow flapper rotation to the open position, respectively.