Abstract: A valve assembly, comprising a first fluid port, a second fluid port, a valve seat comprising an inner valve seat and an outer valve seat, and a moveable plunger, being moveable between a closed position and an open position arranged to simultaneously seal the inner valve seat and the outer valve seat when in the closed position. A first fluid pathway passes via the inner valve seat, and a second fluid pathway passes via the outer valve seat between the first and second fluid ports when the movable plunger is in the open position. At least one fluid flow path is provided through the body of the moveable plunger. The cross-sectional area of the flow path through the moveable plunger is at least half of the cylindrical cross-sectional area of the gap between the plunger and the respective inner or outer valve seat.

Abstract: A valve assembly having an inner and outer concentric valve seat. The inner valve seat is arranged radially inward of the outer valve seat to provide an annular opening therebetween. A movable plunger moves between a closed position and an open position to vary a flow restriction at the inner and outer valve seats and simultaneously seal the inner and outer valve seats in the closed position. An inner and outer valve member comprise the inner and outer valve seats and are separate components mounted in fixed relation to one another. The inner and outer valves seats are radially aligned to maintain concentricity of the inner valve seat relative to the outer valve seat and axially aligned to maintain axial alignment of the inner valve seat relative to the outer valve along an axis, wherein the axis is substantially orthogonal to a plane of the inner and outer valve seats.

Abstract: A tank valve with a valve seat and a valve disc can be displaced relative to the valve seat along a displacement direction into either a closed position or a through-flow position. The valve seat includes a plate shaped part and a ring-shaped part. The valve disc has a first contact area which contacts the first plate shaped part of the valve seat when the tank valve is in the closed position. The valve disc also has a second contact area which is in contact with a second part of the valve seat when it is in the closed position.

Abstract: A damper system for a vehicle is provided that includes an outer tube, a piston rod, and a piston assembly that is mounted to the piston rod and separates the outer tube into first and second working chambers. A valve assembly, mounted to the piston assembly, controls fluid flow between the first and second working chambers. A magnetic rotor is fixed to and extends annularly about the outer tube. A stator assembly is coupled to the piston rod by a spherical bearing assembly. The stator assembly includes a plurality of coils that apply an active damping force to the piston rod when energized. The coils can also generate electricity from axial movements of the piston rod relative to the outer tube. One or more glide bearings are disposed radially between the coils and the magnetic rotor in a sliding fit to stabilize the stator assembly.

Abstract: A valve with a valve seat includes an inner path providing a first flow channel adapted to be in contact with a first chamber of the valve, the valve seat including at least one outer path also adapted to be in contact with the first chamber, the valve seat further including an area facing a sealing area of the valve, the area being adapted to be in connection with a second chamber, the area having an inner sealing edge and an outer sealing edge, and wherein the valve seat is adapted to allow for a flow between the first chamber and the second chamber when the valve is in an open position, where the flow in the inner path and the at least one outer path flow through the area in contact with the second chamber via the inner sealing edge and the outer sealing edge, respectively.

Abstract: A thermostatic valve is provided. The thermostatic valve includes a first seat, a second seat spaced axially apart from the first seat, and a shuttle. The shuttle is located between the first seat and the second seat, has a first side and a second side axially opposite the first side, and is movable between a first position in which the first side of the shuttle seals against the first seat and a second position in which the second side of the shuttle seals against the second seat. At least one of the first seat, the second seat, and the shuttle includes an overmolded portion for sealing between the shuttle and at least one of the first seat and the second seat.

Abstract: A spool and sleeve assembly for a metering valve comprises a spool body defining a center axis, and a sleeve body having a bore that receives the spool body. The sleeve body includes at least one metering window open to the bore and is moveable between a metering position to control flow through the metering window and a shutoff position where flow is prevented from exiting an outlet end of the bore. A seal assembly reacts between the spool body and the sleeve body to provide at least a first sealing interface and a second sealing interface axially spaced from the first sealing interface when the spool body is in the shutoff position. A metering valve for a fuel system is also disclosed.

Abstract: An example manual actuation mechanism includes (i) a piston having: (a) a first flanged portion with a first annular surface area, (b) a second flanged portion with a second annular surface area, (c) a longitudinal cavity bounded by an interior peripheral surface of the piston, and (d) a shoulder on the interior peripheral surface of the piston; and (ii) a pin disposed in the longitudinal cavity of the piston, where the pin has an area with an enlarged diameter configured to interface with and rest against the shoulder of the piston, such that a force applied on the pin in a given axial direction is transferred to the piston, and where a difference between the second annular surface area of the second flanged portion and the first annular surface of the first flanged portion is substantially equal to a cross-sectional area of the pin.

Abstract: A valve assembly that includes a main valve having a valve member moveable between a closed position and an open position. The main valve has an upstream side and a downstream side. The valve assembly includes a pressure equalizing assembly for equalizing the fluid pressure across the main valve. The pressure equalizing assembly includes a line extending from the upstream side of the main valve to the downstream side of the main valve and a pressure equalizing valve assembly.

Abstract: A pressure regulating valve includes a housing having a valve inlet and a valve outlet. A movable piston is located in the housing, and a position of the piston is determined by a selected difference between and inlet pressure and an outlet pressure. The movable piston at least partially defines one or more flow channels between the valve inlet and the valve outlet. When the movable piston is in a fully open position, an axial inlet opening at an inlet end of the one or more flow channels is smaller than an radial depth of the one or more flow channels at the inlet end of the one or more flow channels.

Abstract: A control valve (4) for controlling pressure medium flows of a camshaft adjuster, which control valve includes a substantially hollow cylindrical control sleeve (6), which is disposed inside a casing (8), and a control piston (12) which is guided axially displaceably inside the control sleeve (6) against the spring force of a spring element (14), the control sleeve (6) having at one axial end a base (22) which serves as an axial contact surface for the spring element (14).

Abstract: A steplessly adjustable hydraulic insert valve has a housing defining a radial direction and an end side in an installation direction. An inflow connector on the end side is connectable to a pressure medium source. First and second working connectors and a return connector are arranged in the radial direction. The return connector is connectable to a pressure medium tank. The housing has an axial bore and an actuator guided movably therein. The actuator can be held in an axial center position by at least one spring and is adjustable steplessly axially out of the center position by controllable actuation. At least one of the working connectors is fluidically connectable to the return connector by axial adjustment of the actuator. The actuator has a radial widened portion with first and second control edges for steplessly opening and/or closing first and second radial openings, respectively, of the return connector.

Abstract: A fuel pressure regulation system for a compression ignition diesel engine. The system comprises a fuel supply line connected to an inlet of a transfer pump and a transfer pressure fuel line connected between the transfer pump outlet and the high pressure fuel pump inlet. A fuel filter is positioned in the transfer pressure fuel line and a fuel spill line fluidly connects a fuel pressure regulator to the transfer pressure fuel line at a point between the transfer pump outlet and the fuel filter. A fuel return line is connected between the fuel pressure regulator and the fuel supply line and a control fuel line is connected between the fuel pressure regulator and the transfer pressure fuel line. The fuel pressure regulator comprises a bore within which is located a valve member moveable from a non-regulating position of the fuel pressure regulator to a regulating position of the fuel pressure regulator.

Abstract: A spool valve includes a valve housing and a spool. The valve housing includes a spool hole, a first oil passage, and a second oil passage. The first oil passage has a first port, a second port and a third port that are open to the spool hole. The second oil passage has a fourth port, a fifth port and a sixth port that are open to the spool hole. The spool includes a first oil groove, a second oil groove, a third oil groove, a fourth oil groove, a first communication passage, and a second communication passage. The spool is slidable in the spool hole to switch communication of the third oil groove with the second port and the third port and to switch communication of the fourth oil groove with the fifth port and the sixth port.

Abstract: Embodiments of the invention provide a control valve assembly and method of operating in a blend position at which a supply fluid and a treated fluid are combined into a blended fluid that is directed from the control valve assembly to establish multi-port blending. The control valve assembly is adjustable to accommodate fluctuating demand for treated fluid.

Abstract: A valve is provided including a first valve member and a second valve member. The first valve member includes a first step and a first orifice adjacent the first step. The second valve member includes a second step and a second orifice adjacent the second step. The second valve member is movable relative to the first valve member between an open position, in which the first orifice is fluidly connected the second orifice, and a closed position, in which the first orifice is substantially fluidly disconnected from the second orifice. The first and second steps are fluidly connected to the second orifice and substantially fluidly disconnected from the first orifice when the second valve member is in the closed position, and the first and second steps are fluidly connected to the first and second orifices when the second valve member is in the open position.

Abstract: A valve assembly (1) included in a system for measuring differential pressures in a fluid system and where the valve assembly (1) includes a valve body (7) with an inlet (13) and an outlet (14) for connection to the fluid system, ducts (32, 33) for communication with a differential pressure sensor (12) for registration the differential pressure, a cavity (22) including a calibration cone (10) which is movable in the cavity (22) between a measuring position and a position for zero point calibration/flushing via the valve assembly (1). In instances when the measuring position of the device does not exists, the calibration cone (10) separates the differential pressure sensor (12) from the fluid system, i.e., in its initial position, and, at the same time, the valve assembly (1), in this position, is automatic flushed so as to get rid of any enclosed air in the valve assembly (1).

Abstract: A valve is provided including a first valve member and a second valve member. The first valve member includes a first step and a first orifice adjacent the first step. The second valve member includes a second step and a second orifice adjacent the second step. The second valve member is movable relative to the first valve member between an open position, in which the first orifice is fluidly connected the second orifice, and a closed position, in which the first orifice is substantially fluidly disconnected from the second orifice. The first and second steps are fluidly connected to the second orifice and substantially fluidly disconnected from the first orifice when the second valve member is in the closed position, and the first and second steps are fluidly connected to the first and second orifices when the second valve member is in the open position.

Abstract: A spool valve assembly includes a spool that is moveable by differential pressure across the spool.

Abstract: A valve is provided including a first valve member and a second valve member. The first valve member includes a first step and a first orifice adjacent the first step. The second valve member includes a second step and a second orifice adjacent the second step. The second valve member is movable relative to the first valve member between an open position, in which the first orifice is fluidly connected the second orifice, and a closed position, in which the first orifice is substantially fluidly disconnected from the second orifice. The first and second steps are fluidly connected to the second orifice and substantially fluidly disconnected from the first orifice when the second valve member is in the closed position, and the first and second steps are fluidly connected to the first and second orifices when the second valve member is in the open position.

Abstract: A fluid flow control device for improving, for example, valve operation by reducing “error forces” occurring due to fluid communication between ports of a valve having two or more ports. Incremental pressure drop passages bleed incrementally the flow of fluid between first an second ports as the valve spool is moving between the first and second positions to decrease the pressure differential generated force exerted on the spool whereby the energy required to be applied to the spool for moving the spool between the first and second positions is decreased.

Abstract: A valve assembly is disclosed. The valve assembly may include a housing having an interior chamber, inlet port, outlet port, and control port. The valve assembly may further include a valve member configured to move within the interior chamber to permit flow between the inlet port and the control port and between the outlet port and the control port. The valve assembly may further include and an actuator configured to move the valve member to form a first opening and second opening to create flow forces tending to close the first and second opening. The valve member may also include a passageway in the valve member configured to direct fluid flow from the inlet port to the control port and from the control port to the outlet port, and counteract the flow forces at the first and second opening.

Abstract: A hydraulic rock breaking device, a protection valve and a method of operating a hydraulic rock breaking device. The rock breaking device comprises a percussion device to which pressure fluid is fed along an inlet channel. The inlet channel is provided with a protection valve arranged to monitor the volume flow of pressure fluid flowing through it. If the flow is larger than what has been preset, the protection valve closes, at least partly, the connection through it, protecting thus the percussion device against too high an input power. The protection valve comprises a throttle which generates a pressure difference the magnitude of which is dependent on the fed volume flow. Information on the pressure difference is utilized in controlling the protection valve.

Abstract: A fluid flow control device for improving, for example, valve operation by reducing “error forces” occurring due to fluid communication between ports of a valve having two or more ports. Incremental pressure drop passages bleed incrementally the flow of fluid between first an second ports as the valve spool is moving between the first and second positions to decrease the pressure differential generated force exerted on the spool whereby the energy required to be applied to the spool for moving the spool between the first and second positions is decreased.

Abstract: A fluid flow control device for improving, for example, valve operation by reducing “error forces” occurring due to fluid communication between ports of a valve having two or more ports. Incremental pressure drop passages bleed incrementally the flow of fluid between first an second ports as the valve spool is moving between the first and second positions to decrease the pressure differential generated force exerted on the spool whereby the energy required to be applied to the spool for moving the spool between the first and second positions is decreased.

Abstract: A fluid flow control device for improving, for example, valve operation by reducing “error forces” occurring due to fluid communication between ports of a valve having two or more ports. Incremental pressure drop passages bleed incrementally the flow of fluid between first an second ports as the valve spool is moving between the first and second positions to decrease the pressure differential generated force exerted on the spool whereby the energy required to be applied to the spool for moving the spool between the first and second positions is decreased.

Abstract: In an oil flow control valve (OCV) according to the present invention, a first volume varying chamber is adapted to communicate with a second volume varying chamber through a second plunger breathing path, and the second volume varying chamber is adapted to communicate with a first breathing hole through an intra-plunger breathing path, an intra-shaft breathing path, and a third volume varying chamber. That is, the breathing path to the second volume varying chamber is long and the volume thereof is large, and the breathing path to the first volume varying chamber is still longer and larger in its volume. Consequently, the amount of foreign matters getting into the first and second volume varying chambers can be decreased and therefore it is possible to prevent the occurrence of an operation defect of the OCV.

Abstract: A VCT phaser for an internal combustion engine with at least one camshaft comprising a housing, a rotor, a spool valve and a ring-shaped reservoir. The housing having at least one chamber and the rotor having at least one vane dividing the chambers into advance and retard. The spool valve is comprised of a spool mounted within a bore of the rotor. The reservoir is defined within the bore by an oil dam and at least one of the spool lands. The spool has a first position in which a chamber is coupled to the supply and the other chamber is exhausting fluid and a second position in which a chamber is coupled to the supply and the other chamber is coupled to the reservoir. When a torque reversal occurs, hydraulic fluid pooled in the reservoir is drawn into the other chamber when the spool is in the second position.