Abstract: A valve, in particular having the form of a 2/2-way seat valve, characterized in that a pressure limiting function (28) is integrated in a joint valve body to implement a thermal overpressure protection.

Abstract: A discharge pressure scale (30) includes a valve housing (41) having a functional connector (A), a return flow connector (T) and a user connector (28). A valve piston (52) is guided such that it moves longitudinally against the effect of an energy accumulator (42), moving from a respective opening or regulating position, against a valve seat (94), into a closed position. The user connector (28) and return flow connectors (T) are separated from one another. The fluid pressure present at the user connector (28) can be guided onto a pressure-active surface (A1*) of the valve piston (52) by a pressure compensation device (70) in such a way that it moves into its respective opening or regulating position in a pressure-compensated manner due to the force of the energy accumulator (42).

Abstract: A valve, in particular a 4/2-way slide valve (60), includes a valve piston (67), which is guided in a longitudinally movable manner in a valve housing (25), for selectively connecting and disconnecting fluid connections in the valve housing (25), such as a pressure supply connection (P), a tank connection (T), and two utility connections (A, B). A magnetic system (49), to which current can be supplied, controls the valve piston (67). When no current is supplied to the magnetic system (49), the control pressure at one of the utility connections (A, B) can be set, in particular limited, by a control device (62, 70, 79, 80, 88) arranged in the valve housing.

Abstract: The invention relates to a discharge pressure scale (30) consisting of at least one valve housing (41) having at least three fluid connection points in the form of a functional connector (A), a return flow connector (T) and a control connector (28), wherein a valve piston (52) is guided such that it moves longitudinally against the effect of an energy accumulator (42), moving from a respective opening or regulating position, against a valve seat (94), into a closed position, wherein the control (28) and return flow connectors (T) are separated from one another, characterised in that the fluid pressure present at the control connector (28) can be guided onto a pressure-active surface (A1*) of the valve piston (52) by means of a pressure compensation device (70) in such a way that it moves into its respective opening or regulating position in a pressure-compensated manner due to the force of the energy accumulator (42).

Abstract: The invention relates to a valve, in particular a 4/2-way slide valve (60), comprising a valve piston (67), which is guided in a longitudinally movable manner in a valve housing (25), for selectively connecting and disconnecting fluid connections in the valve housing (25), such as a pressure supply connection (P), a tank connection (T), and two utility connections (A, B), and comprising a magnetic system (49), to which current can be supplied, for controlling the valve piston (67), characterized in that, when no current is supplied to the magnetic system (49), the control pressure at one of the utility connections (A, B) can be set, in particular limited, by means of a control device (62, 70, 79, 80, 88) arranged in the valve housing.

Abstract: A valve has a valve piston (12) guided longitudinally movably in a valve housing (10) and actuated by an operation device (14). In one valve piston position, a connection is produced between a pressure supply port (P) and a working port (A). In another valve piston position, a further fluid-conducting connection is produced between the working port (A) and a tank port (T). The pressure difference arising between the working port (A) and the tank port (T) as flow passes through the further fluid-conducting connection acts, by an actuation device (30), on the valve piston (12). The valve piston passes from a stop position (32), with the further fluid-conducting connection shut off, into a fully open opening position with an enlarged opening cross section from working port (A) to tank port (T).

Abstract: A valve, in particular a pilot-operated proportional pressure control valve, has a valve housing (5) with a pressure supply port (7), a working port (9), and a drain port (11). In the valve housing (5), a main valve piston (15) can be moved by a pilot stage (13) for control of the fluid flow between the pressure supply port (7) and the working port (9). The pilot stage (13) has a valve closing element (43) for a pilot chamber (41). The valve closing element (43) is movable from an open position (OS) into a closed position (SS) by an actuating apparatus (45). The valve closing element (43) can actuate a leakage reduction stage (53).

Abstract: A valve device, in particular a double stop-check valve, preferably of the two-way valve type, has at least three fluid connections (1, 2, 3) provided in a valve housing (51). Two valve elements (65, 67) can slide in the valve housing (51). One control device (71) controls the valve elements (65, 67). At least one of the valve elements (65, 67) forms, together with parts (59/61) of the valve housing (51), a seat leak-tight closure part for the associated fluid connections (1, 2, 3).

Abstract: A valve (18), for a valve assembly (10) for regulating the pressure of a fluid guided in a hydraulic system for supplying pressure to at least one hydraulic consumer (12a, 12b), includes a pilot control stage (48) and a main control stage (38) for at least partially clearing or blocking a fluid path from a supply connection (P) to an outflow connection (T). A relief stage (54) for pressure relief of a fluid chamber is arranged between the pilot control stage (48) and the main control stage (38). The relief stage (54) compares the existing load pressure at load terminal (LS) dedicated to the hydraulic consumer (12a, 12b) with the outflow pressure at the outflow connection (T), clearing the pressure relief if both pressures are approximately the same. The relief stage (54) can be directly connected to the load connection (LS) and can be charged with load pressure.

Abstract: Disclosed is a proportional pressure control valve with a control piston (12) guided in a longitudinally movable manner in a valve housing (10), said control valve serving, by means of an actuating system (14), to selectively connect the connection points present in the valve housing, such as a pressure supply connection (P), a consumer connection (A) and a tank or return connection (T), wherein a first characteristic curve is produced between a control signal of the actuating system (14) and the flow volume or the control pressure (P), in relation to the consumer that can be connected to the consumer connection (A), wherein a second characteristic curve is produced for the consumer that can be connected to the consumer connection (A) of the valve housing (10) by means of a control device (65) after running through the first characteristic curve, the second characteristic curve differing to the first characteristic curve.

Abstract: Device with hydraulic system actuates first and second hydraulic consumers. The hydraulic consumers (10, 12) can be supplied with fluid at a predefinable pressure at least via a flow divider (26) for dividing a fluid flow from a pressure supply (P) into predefinable part flows leading to the respective hydraulic consumer (10, 12). A fluid flow from the hydraulic consumer (10) with higher pressure loading via the flow divider (26) to the hydraulic consumer (12) with lower pressure loading can be suppressed by one shut-off device (38) arranged between the flow divider (26) and at least one hydraulic consumer (12). The shut-off device (38) is arranged in a fluidic connection (F2) from the flow divider (26) to the hydraulic consumer (12) with lower pressure loading.

Abstract: The invention relates to a valve device, in particular a double stop-check valve, preferably of the two-way valve type, comprising at least three fluid connections (1, 2, 3) provided in a valve housing (51), at least two valve elements (65, 67) that can slide in the valve housing (51), and at least one control device (71) for controlling the valve elements (65, 67). The valve is characterized in that at least one of the valve elements (65, 67) forms, together with parts (59/61) of the valve housing (51), a seat leak-tight closure part for the associated fluid connections (1, 2, 3).

Abstract: A valve, in particular proportional pressure regulating valve, having a valve piston (12) which is guided in longitudinally movable fashion in a valve housing (10) and which can be actuated by means of an operation device (14), wherein the valve housing (10) has multiple fluid ports (P, A, T) and wherein, in one movement position of the valve piston (12), a fluid-conducting connection is produced between a pressure supply port (P) and a working port (A), and in another movement position, a further fluid-conducting connection is produced between the working port (A) and a tank port (T), is distinguished by the fact that the respective pressure difference that arises between the working port (A) and the tank port (T) as flow passes through the further fluid-conducting connection acts, by way of an actuation device (30), on the valve piston (12) such that the latter passes from a stop position (32), proceeding from which the further fluid-conducting connection is substantially shut off, into a fully open opening

Abstract: The invention relates to a valve (18) for a valve assembly (10) for regulating the pressure of a fluid guided in a hydraulic system for supplying pressure to at least one hydraulic consumer (12a, 12b), comprising a pilot control stage (48) and a main control stage (38) for at least partially clearing or blocking a fluid path from a supply connection (P) to an outflow connection (T), a relief stage (54) for pressure relief of a third chamber arranged between the pilot control stage (48) and the main control stage (38). The relief stage (54) compares the existing load pressure at a load terminal (LS) dedicated to the at least one hydraulic consumer (12a, 12b) with the outflow pressure at the outflow connection (T), clearing the pressure relief if both pressures are approximately the same or identical, which valve is characterized in that the relief stage (54) can be directly connected to the load terminal (LS) and can be charged with load pressure.

Abstract: A valve assembly for regulating the pressure of a pressure medium (2) of a pressure medium pump (3) to at least one first consumer (4) includes a pilot-controlled pressure control valve (5) with a main piston (6) acted on by the pressure medium (2) and a pilot piston (7). A pressure chamber (8) between a piston back side (9) of the main piston (6) and the pilot piston (7) can be relieved. A relief valve (10) is connected in a fluid-conducting manner to the pressure chamber (8), opens when pressure at the load sensor (LS) represents an out-of-operation mode of the consumer (4), and recirculates pressure medium (2) having a low pressure to a pressure medium reservoir (11) or to the pressure medium pump (3). The relief valve (10) closes when the pressure at the load sensor (LS) represents an in-operation mode of the consumer (4).

Abstract: A solenoid valve for controlling a fluid has a first housing part (2) and an axial guide (3) facing inwards for an armature (4) that can be displaced in the axial guide (3) under the effect of a solenoid (5) that at least partially surrounds the exterior of the first housing part (2). A return spring (6) and a closing element (27) impact a valve closing element (7). A second housing part (9) is arranged coaxially to the first housing part (2). The first housing part (2) has a reduced wall portion (17) that faces inwards towards the armature (4) and the second housing part (9) and that effects a magnetic separation of the two housing parts (2, 9) to at least some extent.

Abstract: Device together with hydraulic system for actuating at least one first hydraulic consumer and at least one second hydraulic consumer.

Abstract: A solenoid valve for controlling a fluid has a first housing part (2), an axial guide (3), facing inwards, for an armature (4) which can be displaced in the axial guide (3) under the effect of a solenoid (5) that at least partially surrounds the exterior of the first housing part (2), a return spring (6) and a closing element (27) impacting a valve closing element (7), and a second housing part (9) which is arranged coaxially to the first housing part (2). The solenoid valve according to the invention is characterized in that the first housing part (2) has a reduced wall portion (17) which faces inwards towards the armature (4) and the second housing part (9) and which effects a magnetic separation of the two housing parts (2, 9) to at least some extent.

Abstract: A valve, in particular a pilot-operated proportional pressure control valve, with a valve housing (5) which has a pressure supply port (7), a working port (9), and a drain port (11), in the valve housing (5) there being a main valve piston (15) which can be moved by a pilot stage (13) for control of the fluid flow between the pressure supply port (7) and the working port (9), with the pilot stage (13) having a valve closing element (43) for a pilot chamber (41), with the valve closing element (43) being movable from an open position (OS) into a closed position (SS) by an actuating apparatus (45), is characterized in that the valve closing element (43) can actuate a leakage reduction stage (53).

Abstract: The invention relates to a valve assembly for regulating the pressure of a pressure medium (2) of a pressure medium pump (3) to at least one first consumer (4), comprising a pilot-controlled pressure control valve (5), a main piston (6) acted on by the pressure medium (2), and a pilot piston (7), wherein a pressure chamber (8) between a piston back side (9) of the main piston (6) and the pilot piston (7) can be relieved, is characterized in that a relief valve (10) is connected in a fluid-conducting e manner to the pressure chamber (8), which valve opens when pressure medium pressure is present at the load sensor (LS), which represents an out-of-operation mode of the consumer (4), and recirculates pressure medium (2) having a low pressure to a pressure medium reservoir (II) or to the pressure medium pump (3), and the relief valve (10) closes, when the pressure medium pressure at the load sensor (LS) represents an in-operation mode of the consumer (4).