In a solenoid actuated inlet control valve for a fuel pump, the risk of fuel leakage from the control valve in the event of damage to the electromagnetic actuator for the inlet control valve is reduced by hydraulically isolating an actuation module containing the electromagnetic coil from a delivery module containing the hydraulic flow paths, and providing a breakaway connection between the actuation module and the delivery module.

A valve core for an electronic valve, which includes a valve head, and an armature. The valve head and the armature being connected to each other by means of a guide rod. The valve core is part of an electronic valve. The valve head and armature are connected by means of the guide rod, which reduces the cost for manufacturing the armature. The electronic valve includes an upper stator and a lower stator, an upper bearing and a lower bearing for guiding the guide rod, an elastic component for biasing the valve head, a sleeve surrounding the periphery of the armature, a bobbin which at least partially surrounds the sleeve, and a coil wound on the bobbin. The electronic valve of the present invention may be used as a compressed gas bypass valve of a turbocharged engine.

An electromagnetic valve for controlling the flow of a pressure medium, said electromagnetic valve comprising a valve housing with an inlet port and an outlet port for the pressure medium; at least one passage opening, which connects the inlet port to the outlet port, for the pressure medium; a valve slide that can be moved axially between a first basic position, which closes the passage opening, and a second basic position, which opens the passage opening, by means of a solenoid coil; and a spring assembly, which positions the valve slide in the first or the second basic position when the solenoid coil is not energized. A spring excursion limiting means limits a specified spring excursion of the second spring portion to position the valve slide in an intermediate position between the first and second basic position by the energized solenoid coil. The valve slide releases at least a partial cross section of the passage opening in the intermediate position.

A constant volume valve provided with body, plunger and controller. The body has inlet port, outlet port, and a chamber for pressurized fluid to fill. The inlet port is connected to pressurized fluid source. The plunger is inside the body and is shorter than the distance between the inlet and outlet ports. The two end surfaces of the plunger function as two poppet valves. The controller moves the plunger in a linear back-and-forth motion. The plunger blocks the inlet port and opens outlet port when it moves to one end, and it blocks the outlet port and opens the inlet port when it moves to the other. The pressurized fluid fills inside the body when the inlet port is opened, then it expands and overflows when the outlet port is opened. The invention is particularly useful in a CO.sub.2 regulator for the planted aquarium.

A valve device includes a housing, a flow duct and a valve body. The valve body is arranged in the flow duct and bears with a sealing section against a housing-side sealing seat when the valve device is closed. The valve body is guided along a movement axis by a housing-side guide surface and bears with a stop surface against a housing-side movement limiting surface when the valve device is open to the maximum. The guide surface is provided by a guide element, and the sealing seat and the movement limiting surface are provided separately by the guide element.

Electromagnetic fluid valve regulating the throughflow of a pressure medium which flows through a housing part having at least two inlet openings which lie opposite one another and at least one outlet opening for the pressure medium. It being possible for a channel which is situated between the inlet openings and the outlet opening to be closed to a greater or lesser extent by an axially movable slide for regulating the throughflow of the pressure medium, a pin protruding into the channel centrically with respect to the center axis of the fluid valve, the pin being provided, for flow guidance, with an outer contour which is of at least approximately conical, pyramidal or hyperbolic design, with the result that the pressure medium which is to flow from the inlet openings strikes the outer contour of the pin and diverted in the direction of the at least one outlet opening.

A damping valve device for a hydraulic vibration damper for a vehicle comprises a drive region and a valve region, and a damper valve housing, with a tube part which encloses the drive region and the valve region, wherein the drive region has a coil which is configured in such a way that it generates a magnetic circuit within the damping valve device and interacts with an armature, attached axially movably within the coil, in order to move the armature in the axial direction, wherein the armature is arranged within a pole tube, and the pole tube forms an axial guide of the armature, wherein the valve region has a fluid inlet and a fluid outlet for admitting and discharging a hydraulic fluid into/out of the valve region, and a valve block with a plurality of flow passages for conducting the hydraulic fluid, wherein the valve region has a control slide which is attached such that it can be moved relative to the valve block in such a way that it can be moved between a closed position, in which the flow passages are closed by the control slide, and an open position, in which the flow passages are free, wherein the pole tube is configured in one part and/or in one piece and encloses the armature and the control slide, and wherein the magnetic circuit comprises the tube part and the pole tube.

A solenoid includes: a coil; a first fixed iron core disposed on an axial first-end side of the coil; a second fixed iron core disposed on an axial second-end side of the coil with a gap from the first fixed iron core; a tubular first movable iron core disposed between the first fixed iron core and the second fixed iron core: a second movable iron core having a tubular shape with a bottom, slidably inserted into the first movable iron core, disposed between the first fixed iron core and the second fixed iron core with a bottom portion facing the second fixed iron core; and a spring interposed between the first movable iron core and the first fixed iron core, and pressing the first movable iron core to the second fixed iron core side.