A valve device having a valve housing (10), in which fluid ports (P, A, T) are provided and in which at least one valve piston (12, 14) can be moved longitudinally, which valve piston either separates at least two of the fluid ports (P, A, T) from one another or interconnects them as a function of its travel position, and having at least one latching device (16, 18) for each valve piston (12, 14) for the detachable fastening of the respective valve pistons (12, 14) in one of its travel positions, which latching device has at least one latching means (20), which can be brought into a latching position (22), which is characterized in that, as part of the respective latching devices (16, 18) for detachably fastening the respective valve pistons (12, 14), at least one control body (24) that can be moved independently of the respective valve pistons (12, 14) is provided, which control body is set up such that, in at least one blocking position, it prevents the relevant latching means (20) disposed in the latching position (22) from leaving the latching position (22) by blocking the latching means (20) is disclosed.

A selector control that is manually operable by a user for activating or deactivating a primary control or a secondary control. The selector control may include a first state for activating the primary control and deactivating the secondary control, a second state for activating the secondary control and deactivating the primary control, and a failsafe state for deactivating both the primary control and the secondary control. The selector control may be configured to maintain the second state independent of continuous user input being applied to the selector control, and configured to maintain the first state when continuous user input is applied to the selector control. The selector control is normally biased toward the failsafe state such that the selector control automatically selects the failsafe state when the user discontinues applying the user input for maintaining the first state. The selector control has particular application for use in controlling a boom of a work vehicle.

An electrohydraulic valve system for controlling a braking system of a work machine includes a valve body forming a bore and a fluid channel, a valve spool disposed within the bore, and a first armature positioned with respect to the valve spool to move the valve spool axially within the bore between a first position and a second position. A spring is disposed within the bore, where the valve spool is biased to its first position by the spring. A first electromagnetic coil is operably controlled between an energized state and a de-energized state, and a lockout system is formed at least partially within the valve body. The lockout system includes a second armature, a second electromagnetic coil, and a lockout spring, where the second electromagnetic coil is operably controlled between an energized state and a de-energized independently of the first electromagnetic coil.

The invention relates to an adjustable-length connecting rod for a reciprocating piston engine, to a reciprocating piston engine, and to a vehicle, where an effective connecting rod length of the connecting rod can be changed, and the connecting rod has a hydraulic length adjustment device which has a hydraulic working chamber, a hydraulic duct, a valve recess with a valve recess longitudinal axis, and a valve device which is arranged in the valve recess and has a valve chamber, where the valve device is configured for opening and/or shutting of a hydraulic medium outflow from the hydraulic working chamber, and the hydraulic duct opens into the valve recess at an orifice opening in an inner wall section of the valve recess. The valve device has at least one closed outer wall section which lies opposite the orifice opening and surrounds the valve chamber of the valve device, where the outer wall section of closed configuration of the valve device configures a flow duct together with that inner wall section of the valve recess, where the flow duct is configured to divert hydraulic medium, which exits from the hydraulic duct with a first flow direction and enters into the valve recess, in a second flow direction which is different from the first flow direction before the entry into the valve chamber.

An electromagnetic valve manifold includes an electromagnetic valve including an output port, a manifold base including an output passage, and a spacer arranged between the manifold base and the electromagnetic valve. The spacer includes a spacer block including a shaft hole and a manual shaft accommodated in the shaft hole. The spacer block includes an output connecting passage that is connected to the shaft hole and connects the output passage and the output port to each other. The manual shaft is configured to be manually operated to be switched between a first switching position, in which the manual shaft allows for connection between the output passage and the output port through the output connecting passage, and a second switching position, in which the manual shaft blocks the connection between the output passage and the output port through the output connecting passage.

A central valve for a camshaft adjuster, and to an internal combustion engine, which includes a camshaft, a camshaft-adjusting device, and a central valve. The central valve includes a shaped part as a valve housing (3), including a control piston (4) guided coaxially within the valve housing (3) in such a way that the control piston can move axially and including a stop, which limits the mobility of the control piston in an axial direction (piston stop). The piston stop is a piston stop washer (5), wherein the piston stop washer and the valve housing (3) are joined.

A latch device (12) for a hydraulic valve (10) is proposed. The latch device (12) comprises a housing (22) and a latch shaft (26), which is supported such that it can move in the housing (22). In order to create a latch device (12), independent of the hydraulic provisioning, the provision of at least one magnetizable ring beam arrangement (38), which is supported on the latch shaft (26), and an electric solenoid arrangement (40), located on the housing (22) around the ring beam arrangement (38) is also proposed, wherein by the supply of current to the solenoid arrangement (40), a positioning force can be produced on the ring beam arrangement (38). Furthermore, a hydraulic valve (10) with the corresponding latch device (12) and a hydraulic arrangement (92) for such a valve (10) are also proposed.

Thermostatic mixing valve including a valve body provided with an inner cavity, a first inlet for a first flow of water into the cavity, a second inlet for a second flow) of water into the cavity, and an outlet for a third flow of mixed water exiting the cavity, a mixing device shaped to be placed in fluid connection with the first inlet, the second inlet and the outlet, and to define a mixing chamber for the first and second flow, the mixing device being internally provided with a thermostatic actuating element that is movable along an operating direction, and a temperature adjusting device provided with a housing and with a positioning element that is slidable with respect to the housing, and configured for adopting, by adjustment, a set position with respect to the housing, and for imposing on the thermostatic actuating element a calibration position along the operating direction corresponding to a desired mixing temperature.

The mixing device includes a plug member connected to the thermostatic actuating element and drivable along the operating direction through the effect of a contracting/dilating movement of the thermostatic actuating element for controlling the entry of first flow and second flow into the mixing chamber so as to maintain the third flow at the desired mixing temperature. The mixing device is removably housed in the cavity by coupling at least one abutting portion of the mixing device with at least one abutting surface of the cavity. On the valve body, in a position opposite to the outlet, an opening end is provided to enable the mixing device to be inserted into the cavity; the temperature adjusting device, in a coupling configuration is shaped for coupling with the mixing device along a coupling surface and for closing the opening end; the positioning element is configured for remaining in the set position with respect to the housing also in a decoupling configuration of the temperature adjusting device from the mixing device and from the valve body, so as to preserve, once the temperature adjusting device, the mixing device and the valve body have been subsequently recoupled, the calibration position corresponding to the desired mixing temperature.

A directional control valve, comprising: a valve body having a bore to receive a spool; a spool mounted in said bore; at least one stopper mounted in said bore, said stopper being axially adjustable and fixable at a selected axial position. The provision of an axially adjustable stopper eliminates the need to select a suitably sized stopper from a selection of stoppers or to grind down (resize) a single stopper. It reduces the number of parts in the valve (thus reducing cost) and it also shortens the calibration time for the valve as there is no need to remove the stopper from inside the bore in order to perform an adjustment. As the valve is tested after each adjustment, this also means not removing the stopper and breaking the seal (draining the valve) between each testing phase. The calibration can therefore be performed much more efficiently.

A switch valve configured to control a hydraulic fluid flow, the switch valve including a capture element which is arranged in a valve housing and displaceable into a first switching position or a second switching position, wherein a first hydraulic connection is connected with a supply connection in the first switching position and a second hydraulic connection is connected with the supply connection in the second switching position, wherein at least two pass through bore holes are provided in the capture element and extend through the capture element, wherein a first pass through bore hole provides a fluid connection between the first hydraulic connection and the supply connection in the first switching position and a second pass through bore hole provides a fluid connection between the second hydraulic connection and the supply connection in the second switching position.