A valve assembly has a basic module and a plurality of valve modules which are mounted on the basic module side by side along a line-up direction. The basic module is composed of a first and a second leg which extend at an angle with respect to each other such that the two legs delimit a receiving space for the valve modules on two sides, a fluid area being provided on the first leg which has a fluid connection face formed on an inside of the first leg which is turned towards the second leg and on which fluid connections are provided which communicate with fluid connections of the valve modules. All fluid connections of the valve modules communicate with fluid connections of the fluid connection face. An electrical area in which electrical connections communicating with electrical connections of the valve modules are provided is provided on the second leg.

A valve arrangement includes a housing arrangement (12), (18), a first spool valve (1a, 1b) having a first spool (3a, 3b) and a second spool valve (2a, 2b) having a second spool (4a, 4b), wherein the first spool valve (1a, 1b) and the second spool valve (2a, 2b) each includes a supply channel arrangement having a pump channel (5) and a tank channel (6), and a working port arrangement having two working ports (8, 9), wherein the spools (3a, 3b; 4a, 4b) control a flow path between the supply channel arrangement (5, 6) and the working port arrangements (7, 8). In such a valve arrangement, it should be possible to simply adapt the control behaviour to different purposes. To this end, the working port arrangement (7, 8) is arranged in a flange (16a, 16b) connected to the housing arrangement (13, 14; 19, 20).

An example valve section includes: a housing having: (i) a longitudinal bore, (ii) a first and second workport passages configured to be fluidly coupled to an actuator, (iii) a first and second return passages, (iv) an open-center passage configured to be fluidly coupled to a source of fluid, and (v) a supply passage disposed between the first and second workport passages. The valve section also includes a spool movable in the longitudinal bore to shift between: (i) a neutral position that allows the open-center passage to permit fluid flow therethrough, and (ii) a shifted position that allows fluid to be diverted from the open-center passage to the supply passage, and connects the supply passage to either the first or second workport passage while connecting the other workport passage to a corresponding return passage of the first and second return passages.

This invention relates to a sectional hydraulic valve and a truck mounted forklift incorporating the distributor. The sectional hydraulic valve comprises an inlet cover, a plurality of hydraulic sections and an end cap. The hydraulic sections each having a pump gallery, a tank gallery, an A port, a B port, a spool and a remote pilot gallery. The end cap comprises a pump port coupled to the pump gallery, a tank port coupled to the tank gallery and a connecting conduit between the pump port and the tank port. The end cap further comprises a remote pilot gallery port coupled to the remote pilot gallery, a fluid passageway between the remote pilot gallery port and the connecting conduit, and a valve assembly operable to selectively permit or restrict flow of hydraulic fluid between the connecting conduit in the end cap and the remote pilot gallery in the hydraulic section.

A pneumatic control valve manifold assembly including a modular manifold segment with first and second valve receiving bores, inlet and exhaust cavities, and fluid passageways. The modular manifold segment has a mating face and a back-side face. The fluid passageways are arranged in fluid communication with the first and second valve receiving bores, are open to the modular manifold segment mating face, and have multiple configurations. The modular manifold segment mating face includes an abutment surface surrounding the fluid passageways that has a plurality of shapes depending upon the configuration of the fluid passageways. The modular manifold segment back-side face includes a plurality of sealing ribs arranged in a pattern that universally mates with each of the different shapes of the abutment surface such that multiple modular manifold segments with different fluid passageways can be stacked next to each other.

An example valve section includes: a housing having: (i) a longitudinal bore, (ii) a first and second workport passages configured to be fluidly coupled to an actuator, (iii) a first and second return passages, (iv) an open-center passage configured to be fluidly coupled to a source of fluid, and (v) a supply passage disposed between the first and second workport passages. The valve section also includes a spool movable in the longitudinal bore to shift between: (i) a neutral position that allows the open-center passage to permit fluid flow therethrough, and (ii) a shifted position that allows fluid to be diverted from the open-center passage to the supply passage, and connects the supply passage to either the first or second workport passage while connecting the other workport passage to a corresponding return passage of the first and second return passages.

The present invention relates to a fluid control device and a connector for the same. The connector includes a first unit and a second unit to form a connector in a particular shape. Thus, the connector and an adjacent connector can be stacked upon each other to allow simple disassembling. The present invention also provides a fluid control device including the connector.

A zoned fluid control system in a valve manifold system has a plurality of manifold blocks connected together and a plurality of control valves mounted to the manifold blocks with the control valves being electrically actuated and pilot pressure operated. The plurality of manifold blocks forms at least first and second separate pilot pressure passages of a respective first zone and second zone not connected to each other for supplying a respective first set and second set of control valves with independently controlled pilot pressure. A pilot supply valve selectively supplies pilot pressure and shuts off pilot pressure to the second pilot pressure passage without affecting the pilot pressure to the first pilot pressure passage thereby disabling the second set of control valves as a separate zone independent from the first set of control valves.

A hydraulic control device for an automatic transmission, the hydraulic control device including: a first layer having a first parting surface and a plurality of first grooves formed in the first parting surface; and a second layer that has a second parting surface and a plurality of second grooves formed in the second parting surface and facing the plurality of first grooves, and that is stacked on the first layer in a stacking direction with the second parting surface facing the first parting surface of the first layer, so that the plurality of first grooves and the plurality of second grooves form a plurality of first oil passages.

A hydraulic control device for a vehicle drive device that includes a first layer having a first opposing surface, a first groove formed in the first opposing surface, and a first bonding formed on the first opposing surface and surrounding the first groove; and a second layer having a second opposing surface facing the first opposing surface, a second groove facing the first groove and formed in the second opposing surface, and a second bonding facing the first bonding, surrounding the second groove, and bonded to the first bonding, the second opposing surface being placed on, and bonded to, the first opposing surface, so that the first groove and the second groove form a first oil passage.