Abstract: A pulse width modulated solenoid system having low noise characteristics is described. Noise reduction is primarily achieved by separating the solenoid device from the insulator and the manifold housing through the use of rubber isolators and multiple sets of o-rings, thus preventing metal to metal contact. Additional noise reduction is achieved by encapsulating all of the solenoids, using the insulator, the cover plate, the housing, and the screen carrier. Noise levels are also further reduced by minimizing the impact force of the armature against the sleeve by allowing fluid to vent into the upper area of the sleeve, thus causing a dampening effect.

Abstract: A continuous combustion system for an internal combustion engine includes a reaction vessel external to the engine cylinders. The reaction vessel contains a combustion chamber for sustaining continuous combustion of an air fuel mixture during the operation of the associated engine. The reaction vessel contains an incoming air chamber and an exhaust gas chamber that are each in communication with the combustion chamber. Injected fuel vapor is mixed with scavenged exhaust gas for pre-heating and with compressed air from each cylinder provided during the compression stroke of each piston. The compressed air and fuel vapor mixture sustains the ignited combustion continuously, while exhaust gas is fed to the cylinders to provide working fluid to the engine during the power stroke of each piston. A valve mechanism is provided to control the flow of air from and working fluid to the cylinders at the appropriate times in order to sustain operation of the engine.

Abstract: The invention relates to valve system made up of multiple three way valves mechanically coupled together to produce the functionality of a four way valve.

Abstract: A pressure-control valve device for a fluid, having at least one inlet area and first and second outlet areas that can be flow-connected to one another by two seat valves coupled to one another, in which a fluid flow from the inlet area to the first and second outlet areas can be adjusted by the first seat valve and a fluid flow between the first and second outlet areas can be adjusted by the second seat valve. The first seat valve is designed as a valve aperture with a valve opening and a valve control edge and with a ball-shaped closing element that co-operates with the valve control edge. The valve opening and the ball-shaped closing element are designed such that the ratio of the diameter of the valve opening to the diameter of the ball-shaped closing element is equal to at least 0.75.

Abstract: The present invention relates to a control valve capable of performing capacity control independent of the pressure of operation fluid. In the control valve which opens and closes a first poppet valve and a second poppet valve by a solenoid section the following pressure-receiving areas relating to the first poppet valve and the second poppet valve are set to be substantially equal to each other: the first effective pressure-receiving area of a first pressure-sensing spring device, the second effective pressure-receiving area of a second pressure-sensing spring device, the first pressure-receiving area on the inner side of a portion where a first valve seat surface and a first valve section surface are in contact with each other, and the second pressure-receiving area on the inner side of a portion where a second valve seat surface and a second valve section surface are in contact with each other.

Abstract: The control valve has a body; a supply port, an output port, and a discharge port; a first pressure-sensing device; the valve body having a first valve section surface that forms a first valve seat surface; a valve seat body having a second valve seat surface that forms the second valve section surface; a second pressure-sensing device; and a solenoid section. The first effective pressure-receiving area, the first pressure-receiving area on the inner side of a portion where the first valve seat surface and the first valve section surface are in contact with each other, and the second pressure-receiving area on the inner side of a portion where the second valve seat surface and the second valve section surface are in contact with each other are set to be substantially the same, and the second effective pressure-receiving area is set greater than the first effective pressure-receiving area.

Abstract: The invention relates to an assembly comprising an electromechanical device and a self-sealing valve, and in particular, to any inflatable device that includes the assembly. In one embodiment, the assembly comprises a valve housing defining an opening through which fluid can be provided to the inflatable device, a flexible diaphragm assembly that is configured to self-seal the opening with sufficient fluid pressure in the inflatable device and to open under sufficient fluid pressure from a fluid moving device, to provide fluid through the opening to and seal the inflatable device. The assembly further comprises an electromechanical device including an actuating arm, having a first position in which the actuating arm urges open the self-sealing valve and a second position in which the actuating arm does not act upon the self-sealing valve, so as to regulate an amount of fluid within the inflatable device. With this arrangement, a small, low power, low duty cycle electromechanical device can be used.

Abstract: The present invention enlarges the working pressure flowing into the working chamber and improves the response ability of the valve controlling the fluid using a compact solenoid portion.

Abstract: A directional control fluid valve for establishing a first throughflow path, with which fluid is sucked in and supplied under pressure to a consumer, and a second throughflow path with which fluid is sucked out of the consumer. The valve has a housing which has a tank port, a pressure port for connecting to a pressure side of a pump, a suction port for connecting to a suction side of the pump, and a consumer port. The valve has at least one valve flap which is arranged within the housing and which can be moved between a first flap position for establishing the first throughflow path and a second flap position for establishing the second throughflow path. The housing has two parts on which are formed in each case at least two valve seats. The housing has a base part on which the tank port, the pressure port, the suction port and the consumer port are formed, and a cover part which has closed ducts. The closed ducts are connected to the associated valve seats.

Abstract: Solenoid operated fluid control valve for controlling the pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, a valve member for controlling fluid flow to a fluid passage, an actuator pin disposed between the armature and the valve member for moving the valve member in response to armature movement, and one or more features including an armature damping member, tubular actuator pin support body, flow diverter, coil bobbin support sleeve, and/or internal particle gettering magnet to improve valve operation.

Abstract: In one embodiment, a solenoid valve includes a supply port that fluidly communicates with a source of compressed air, a delivery port, a bore that selectively fluidly communicates with the supply and delivery ports, an armature in the bore, a pole piece in the bore, and a coil that is selectively energized with electrical power. The coil is around the armature and pole piece. The armature and pole piece selectively sealingly engage and move as an armature/pole piece single unit as a function of the electrical power in the coil. A position of the armature/pole piece within the bore controls fluid communication between the supply port and the delivery port.

Abstract: A method for operating a hydraulic actuation system during a pressure sensor malfunction is provided. The hydraulic actuation system includes a pump, a reservoir, a first work-port and a second work-port, a valve system with individual orifices, a pressure sensor system, and a controller for regulating the hydraulic actuation system based on fluid flow demand and on determined pressure differences. The method includes detecting a malfunction of a pressure sensor for the first work-port, closing second and third orifices, and regulating the pump to generate fluid flow corresponding to maximum pressure generated by the pump. The method also includes assigning a value for the difference between pump pressure and the pressure of the subject work-port that is equivalent to a value within an attainable range for difference between the two pressures. Furthermore, the method includes regulating a first orifice and a fourth orifice in response to the fluid flow demand.

Abstract: An adaptable hydraulic control system configured to be used with either open-center or closed-center hydraulic power systems which may include one or more switches, one or more hydraulic circuits to operate a sequence of motions and may include a shunt relief valve to permit operation with an open-center hydraulic innervator control valve(s) powered by wither an open-center system or a closed-center system. Series switches may control a sequence of operation by transitioning between different normal, or default states to act upon and control repositioning of a hydraulic innervator control valve(s) that may itself have normal or default states perhaps such as for forward operational flow, backward operational flow, or neutral pass through flow.

Abstract: A valve with an inlet and an outlet as well as a return. In the inlet a first screen is provided. This screen is designed sharp or short.

Abstract: A pneumatic pilot valve comprises a valve body having an inlet, an outlet, a flow passage, and first and second valves arranged to control flow through the valve. The second valve includes a tapered valve seat opening into a cylindrical bore, and a thrust pin includes a tapered second part and an annular recess having a seal. The thrust pin is movable between a first position, a second position, and an intermediate position. The tapered second part of the thrust pin is arranged to engage the tapered valve seat to close the second valve when the thrust pin moves to the second position, and the resilient seal is sized to engage the cylindrical bore when the thrust pin is in the intermediate position.

Abstract: The present invention relates to a method for regulating a pressure in a hydraulic system for operating at least one actuator in a subsea installation, having a fluid supply line (102) connected to a source of pressurized fluid (101) at a remote location delivering fluid at a constant pressure to the subsea installation, comprising first and second control valves (103, 105) controlled by an electronic control unit (107), and at least one pressure sensor (106) and an accumulator (104) arranged between the first and second control valve (103, 105), where the pressure in the fluid supply line (102?) to the actuator is regulated by regulating the pressure in the accumulator (104) by adding fluid from the source of pressurized fluid (101) through the first control valve (103) if the pressure is too low or releasing pressure through the second control valve (105) to a fluid return line (120) if the pressure is too high and thereby establishing the desired pressure for operating the actuator.

Abstract: Solenoid operated fluid control valve for controlling the pressure of a fluid in a fluid control system comprises a solenoid housing having therein a solenoid coil, an armature movable in response to electrical current applied to the solenoid coil, a valve member for controlling fluid flow to a fluid passage, an actuator pin disposed between the armature and the valve member for moving the valve member in response to armature movement, and one or more features including an armature damping member, tubular actuator pin support body, flow diverter, coil bobbin support sleeve, and/or internal particle gettering magnet to improve valve operation.

Abstract: A bleed solenoid valve that includes a valve main body that is hollow and formed with an input port, an output port, and a discharge port; a flow-changing part that is accommodated inside the valve main body and formed with a first flow path and a second flow path, a valve shaft that is accommodated inside the flow-changing part; and a solenoid part that moves the valve shaft in the axial direction.

Abstract: A high pressure homogenizer segmentalizes material made of minute solid or the like by passing suspension liquid including the material to a small diameter orifice at high speed under high pressure. An injection valve of the high pressure homogenizer includes: a fixed member having a material introducing passage therein; and a movable member disposed rotatably, swingably, or pulsatingly opposite to the fixed member in an axial direction of the fixed member. The orifice of the injection valve is made of a fine gap in a radial direction disposed between an end face of the fixed member facing an end of the material introducing passage and an end face of the movable member disposed at an end of the movable member opposed to the fixed member. The orifice communicates with a material processing passage via a ring-shaped collision wall.

Abstract: A proportional pressure control valve for regulating the pressure level in a hydraulic circuit including a magnet part and a valve part. The valve part includes an inflow opening for the inflow volume flow and two discharge openings. The first discharge opening is for an operating pressure connection and the second discharge opening is for a tank volume flow. The valve part also has a ball seat and a flat seat with an opening. A closing member is operable to control a flow rate through the opening of the flat seat. The valve part also includes a stream deflector disposed between the ball seat and the flat seat that has a circumferential surface configured to deflect a stream filament of the flow by an angle of ?30 degrees.

Abstract: A valve chip may include a substrate having first and second faces and openings between the first and second faces, and a plurality of flexible valve flaps on one of the faces of the substrate with each flexible valve flap being associated with at least one of the openings. The valve chip may be packaged by forming a frame having an opening therein, and securing the valve chip in the opening of the frame. More particularly, the valve chip may be secured in the opening so that central portions of the first and second faces of the substrate are exposed through the opening in the frame and so that a fluid seal is provided between the frame and edges of the substrate. Related valves, valve assemblies, and methods are also discussed.

Abstract: The present invention relates to a manipulation button 40 for adjusting the height of a cushion seat for a vehicle that is capable of absorbing the shocks applied to a driver sitting on the cushion seat while the vehicle is being driven on a relatively rough road, and more particularly, to a button for adjusting the height of a cushion seat for a vehicle that is capable of adjusting the height of the cushion seat according to a driver's physical conditions and his desired driving posture, wherein a plurality of pneumatic valves having flow channels formed therein are intensively configured with one another in such a manner as to be operated by means of the seesaw type button 41, thereby effectively performing the ascending and descending motions of the cushion seat in a simple manner.

Abstract: An electromagnetic proportional pressure-control valve of a vehicle transmission which includes a magnet part, a hydraulic part and a spring operatively connecting the magnet part to the hydraulic part. The magnet part includes a coil, an armature and an armature bar. The hydraulic part includes first and second closing elements. The first closing element forms a flat seat and the second closing element a ball seat and the closing elements are opened and/or closed via a tappet rod. When no current is applied to the valve, the second closing element is closed and an gap (ü) in the first closing element is larger than one seventh a nominal width (NW) of the valve. The second closure area (A_2) is larger than a circular area having a diameter corresponding to double the gap and the diameter (s) of the tappet rod is smaller than 0.7 times the diameter (b) of the orifice.

Abstract: A rotary valve for controlling air supply in an inflatable device comprises a first rotor (11) and the second rotor (12) driven by motor (13) with a drive pulley (14) fixed directly onto its drive spindle (15). A toothed belt (16) driven by the drive pulley (14) engages with the toothed perimeter profile of the first rotor (11), to rotate rotors (11) and (12) relative to a stator (10). As the first and/or second rotor(s) are rotated, channels and ports on the airtight interfaces between the rotors (11, 12) and the stator (10) are connected and disconnected as required by the desired inflation sequence, including all the ports sealed in one position or all the ports exhausting to atmosphere in another position. The valve can be used in conjunction with any type of inflating device, where complex porting or air routing is required, the valve achieving this in a simpler manner.

Abstract: A communication section located within a piping section and communicating with a common first port introducing/exhausting fluid is formed such that the diameter of the communication section is larger than the inner diameter of a valve-opening/closing passage by passing the communication section through the piping section from the external, further including a lid sealing the through hole.

Abstract: A hydraulic system having at least one hydraulic valve for actuating a component, wherein a control pressure acting on the hydraulic valve can be activated through a supply pressure of a pilot circuit having at least one actuator. At least one pressure reduction apparatus is connected in series with the actuator.

Abstract: A motor-operated valve which can control the flow rate at a high accuracy during a normal flow, and can pass the fluid so as to suppress pressure loss as much as possible during a reverse flow, and a refrigeration cycle using the same are provided. It is configured such that during a normal flow, the fluid is made to flow only from between the main valve body 24 and the orifice 22 to perform flow rate control, and during a reverse flow, all or a majority of the fluid is made to flow to a bypass channel 70 without being passed through the orifice 22a to decrease pressure loss as much as possible. To be more specific, a check valve body 60 which closes the bypass channel 70 during a normal flow and opens it during a reverse flow is provided in the valve main body 20.

Abstract: A solenoid-operated valve comprises an inlet valve member which is disposed to close in response to fluid pressure at an inlet port. A venting valve member is disposed relative to the inlet valve member so that closure of either valve member lifts the other. The valve includes at least one coil within which is a tubular assembly that forms a chamber with an operating space for the venting valve member and contains an armature for striking a rear part of the venting valve member when the coil is energised. The chamber includes a flux tube which provides a path for magnetic flux in parallel with the armature, the flux tube terminating before a region where the armature strikes the rear part of the venting valve member. A non-magnetic ring surrounds this region so that the density of the magnetic flux is increased in this region to increase the force with which the armature can strike the rear part of the venting valve member.

Abstract: A pressure control valve assembly including a valve body with a valving cavity, a metal insert, a member and ball, a plastic internal ball guide, and a plug. The metal insert, which is received within the valving cavity, includes an exhaust port, a pressure control port, a supply port, and a plug-receiving end. The plastic internal ball guide is included within a portion of the metal insert. The member extends within a portion of the insert and is movable with respect to the exhaust port, the member moving a ball with respect to a supply port. In an embodiment, a plug is received within the plug-receiving end of the insert. A method for making a valve body for a valve assembly is also disclosed.

Abstract: A valve assembly may include a main housing and first and second electro-statically actuated valves. The main housing may define at least three chambers, with a first chamber configured to be coupled to a high pressure supply port, a second chamber configured to be coupled to an output port, and a third chamber configured to be coupled to a low pressure exhaust port. The first electro-statically actuated valve may be provided between the first and second chambers, and the first electro-statically actuated valve may allow or substantially block fluid communication between the first chamber and the second chamber responsive to a first electrical signal. The second electro-statically actuated valve may be provided between the second and third chambers, and the second electro-statically actuated valve may allow or substantially block fluid communication between the second chamber and the third chamber responsive to a second electrical signal. Related methods are also discussed.

Abstract: A valve system including a number of shape memory alloy (“SMA”)-actuated valves for controlling the flow of fluids is disclosed as is a variety of types of SMA-actuated valves and methods of operation. In one embodiment, a valve system includes a housing having a substantially closed cavity as well as a second port for communicating a fluid. Further, the valve system includes a first SMA actuator configured to control the position of the first seal to vary fluid flow through the firs port, and a first temperature compensator for adjusting the position of the seal by an amount proportional to temperature. A second SMA-actuated valve, driven by either a unidirectional or a bidirectional SMA actuator, controls the position of the second seal to vary fluid flow through the second port, and a second temperature compensator for adjusting the position of the second seal by another amount proportional to temperature.

Abstract: In a device for reversing the flow of flowing media including two multi-way valves (21) which are fluidically interconnected and mounted on an adapter plate (32), the two valves are identical and are fluidically connected with one another by being pushed one into the other via rotationally symmetrical sealing members that seal in the radial direction.

Abstract: A switching control valve for use in controlling the motion of a hydraulic component is provided. The valve includes a housing that defines a feed port, an outlet port, a drain port, and a longitudinal opening through the housing. The valve also includes an inlet valve moveably positionable in the longitudinal opening for selectively fluidly connecting the feed port to the outlet port, as well as a drain valve moveably positionable in the longitudinal opening for selectively fluidly connecting the outlet port to the drain port. The valve further includes a valve shaft that is moveably positionable in the longitudinal opening, such as by a solenoid or similar control device, and is operably connected to the inlet valve and the drain valve. The housing, the inlet valve and/or the drain valve are configured to provide permanent fluid communication between the outlet port and the drain port.

Abstract: In a shifting unit (1) for a vehicle transmission gearbox, the switching unit comprising valves which are connected between with one another by a pressure supply line conduit (58) and by a pressure exhaust line (60) associated with a switch chamber (10) of a switch cylinder (2). The switch chamber (10) of switch cylinder (2) has exhibits at least one opening valve (26) and at least one closing valve (28) through additional valves (62, 64, 66, 68); and the pressure supply line (58) and the pressure exhaust line (60) are separately closed, opened, blocked and/or swapped.

Abstract: A valve apparatus is adapted to be at least partially inserted into an insertion hole of a counterpart member. The valve apparatus includes a housing and an O-ring. The housing is adapted to be inserted from an outside of the insertion hole into the insertion hole. The housing and the insertion hole define an annular gap therebetween. The O-ring seals the annular gap. The housing includes a substantially cylindrical base metallic member inserted into the insertion hole and an outer resin member. The outer resin member is fixed to the base metallic member, and at least partially defines an outer circumferential periphery of the housing. The base metallic member defines a bottom surface of a groove that supports the O-ring. The bottom surface of the groove is exposed circumferentially throughout from the outer resin member. The outer resin member defines a wall that restricts the O-ring from axially moving.

Abstract: The invention relates to an assembly comprising an electromechanical device and a self-sealing valve, and in particular, to any inflatable device that includes the assembly. In one embodiment, the assembly comprises a valve housing defining an opening through which fluid can be provided to the inflatable device, a flexible diaphragm assembly that is configured to self-seal the opening with sufficient fluid pressure in the inflatable device and to open under sufficient fluid pressure from a fluid moving device, to provide fluid through the opening to and seal the inflatable device. The assembly further comprises an electromechanical device including an actuating arm, having a first position in which the actuating arm urges open the self-sealing valve and a second position in which the actuating arm does not act upon the self-sealing valve, so as to regulate an amount of fluid within the inflatable device. With this arrangement, a small, low power, low duty cycle electromechanical device can be used.

Abstract: Provided are a flow meter and a flow-rate control system using the same that is capable of measuring a flow rate in a minute flow-rate region with excellent measurement accuracy by preventing or suppressing the generation of bubbles and in which accumulation of the fluid and the bubbles is less likely to occur.

Abstract: Proportional pressure control valve with a magnetic part and a valve part, the valve part has an inflow opening for the inflow stream, a first outflow opening for the filling stream, and a second outflow opening for the tank volume stream, and has a ball seat, a flat seat with an opening, a closing part for controlling the throughput quantity through the opening of the flat seat, and a stream diverter. The inflow opening faces away from the magnetic part and coaxially to its longitudinal axis, and the outflow openings are constructed on the side wall of the valve part radially to its longitudinal axis, so that fluid flowing from through the valve is exposed to a diversion of a maximum of 90°. The fluid, after flowing through the ball seat and to and through the stream diverter, experiences a diversion of less than 30°.

Abstract: A pressure control valve (1) designed as a closed-end pressure regulator is proposed, which comprises two valve seats (7, 11) arranged in a hydraulic half-bridge circuit, with an electromagnet (2) having a magnetic core, a magnetic coil (3), and a displaceable armature (4), with an anchor rod (5) displaceable by the armature (4) for a closing part (6), which can be made to strike against a first valve seat (7) of the tank edge, and with a push rod (9), which is connected to the anchor rod (5) or is designed as a single piece with the anchor rod (5), which can move a locking element (10) designed as a ball out of a ball seat (11) of the inlet control edge, in which the push rod (9) is configured in such a way at its end facing the ball seat (11) that the opening cross-section of the inlet control edge (12), that is, the ball seat (11), can be modified depending on the axial position of the push rod (9) in such a way that the cross-section is reduced when the target pressure is low, in order to reduce the inlet

Abstract: A pressure control valve is provided, in particular an electromagnetic pressure control valve, with a magnetic component which has at least one electrical coil and a relocatably supported armature at least partially within the coil. Furthermore, a valve component is provided which comprises a supply, a runback, a load connection and a valve element, in which the valve element in turn has a gate valve and a globe valve.

Abstract: A valve is provided with a valve housing encompassing a pressure chamber and possessing at least two valve ports which open into the pressure chamber, whereby, in the pressure chamber at least one axially slidable valve stem exists, which controls at least one of the valve ports and which the at least one valve stem is movable between a closed position and an open position. The valve further encompasses at least one wire or band shaped SMA element, the element having an SMA, as well as possessing a resetting element for the movement of the valve stems into the closure direction. The valve seat carries on its first end a port closing closure disk, whereby its second end is axially guided within the pressure chamber on a base plate which the plate extends itself transversely to the valve stems.

Abstract: A valve chip may include a substrate having first and second faces and openings between the first and second faces, and a plurality of flexible valve flaps on one of the faces of the substrate with each flexible valve flap being associated with at least one of the openings. The valve chip may be packaged by forming a frame having an opening therein, and securing the valve chip in the opening of the frame. More particularly, the valve chip may be secured in the opening so that central portions of the first and second faces of the substrate are exposed through the opening in the frame and so that a fluid seal is provided between the frame and edges of the substrate. Related valves, valve assemblies, and methods are also discussed.

Abstract: A direct-current sprayer includes a shell with an outlet therein, a valve in the outlet, a pipe leading to the valve from a pump in the shell and a hose detachably connected to the valve so that water can flow from a pump in the shell into the hose through the valve. The valve automatically blocks the flow of the water after the hose is detached from the valve.

Abstract: A hydraulic system has an electrohydraulic valve that controls flow of fluid to operate a hydraulic actuator, such as a cylinder or motor. A set of characterization data is provided which describes performance of the electrohydraulic valve as a function of changes in differential pressure across that valve. The hydraulic system is operated by specifying desired movement of the hydraulic actuator and in response deriving a desired valve flow coefficient which designates a level of fluid flow through the electrohydraulic valve. A compensated control signal is produced from the desired valve flow coefficient and the characterization data, to counter act effects that changes in differential pressure have on flow of fluid. The electrohydraulic valve is activated in response to the compensated control signal.

Abstract: A solenoid-operated valve comprises an inlet valve member which is disposed to close in response to fluid pressure at an inlet port. A venting valve member is disposed relative to the inlet valve member so that closure of either valve member lifts the other. The valve includes at least one coil within which is a tubular assembly that forms a chamber with an operating space for the venting valve member and contains an armature for striking a rear part of the venting valve member when the coil is energised. The chamber includes a flux tube which provides a path for magnetic flux in parallel with the armature, the flux tube terminating before a region where the armature strikes the rear part of the venting valve member. A non-magnetic ring surrounds this region so that the density of the magnetic flux is increased in this region to increase the force with which the armature can strike the rear part of the venting valve member.

Abstract: Disclosed is an electromagnetic valve in which a force due to a working fluid from an inflow hole acting perpendicularly with respect to the axis of a shut-off valve is reduced to thereby reduce the sliding resistance of the shut-off valve. An electromagnetic valve according to the present invention includes: a housing (10) having an inflow hole (11), an inner flow path (12), and a discharge hole (13); a valve seat (15) secured in position inside the housing (10); a shut-off valve (16) adapted to abut one surface of the valve seat (15) to shut off the working fluid flowing into the inner flow path (12) through the inflow hole (11); and a pressure regulating valve (17) provided coaxially with the shut-off valve (16) and adapted to control, through adjustment of the dimensions of a gap between itself and the other surface of the valve seat (15), the amount of working fluid flowing to the exterior of the housing (10) through the discharge hole (13).

Abstract: On/off solenoid ball valves of the invention comprise at least one inlet port; at least one pressure control outlet port; at least one exhaust port; at least one check valve positioned between the pressure control outlet port and the exhaust port; and at least one bypass orifice positioned to allow inlet fluid flow to the pressure control outlet port irrespective of whether the valve is in the “on” or “off” position. Because of their ability to provide unique and controlled flows, valves of the invention are able to be used in applications previously off limits to on/off solenoid ball valves.

Abstract: A twin manifold seat valve comprising at least two closure members S1, S2, S3 each functionally associated with at least one valve seat D1, D2, D3, D4. At least one of the closure members is moved to a blocking position with predetermined blocking force at the valve seat upon energization of a solenoid and counter to the force of a spring 22, 7. A single common solenoid M is functionally associated to both closure members S1, S2, S3 by two pivotably supported reduction levers U1, U2. The armature 2 of the solenoid actuates both reduction levers U1, U2. The closure members are located on the same side of the pivot support of the reduction levers. A spring member is integrated into at least one of the reduction levers. The solenoid armature deforms the spring members to generate the closure member blocking force by moving the closure members into contact with their respective seats.

Abstract: Disclosed herein is an electronically controlled valve. The electronically controlled valve includes a valve body and a spool. The valve body includes at least one fluid inlet port, at least one fluid outlet port, an upper cavity, and a lower cavity. The spool is disposed within the valve body. The spool includes a first end and an opening. The opening allows the lower cavity to be in fluid communication with the upper cavity.

Abstract: A digital valve assembly controls a reciprocating valve element. The valve assembly has two actuator valve spools that are activated selectively by three solenoids to either of two operating positions for each valve spool. Fluid flow metering areas for the valve spools are calibrated for desired reciprocating valve timing, lift rates and closing rates.