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.

Devices and a method are described herein for fixing a valve to a base via a single point on the base. The valve may be fixed to the base using a plate inserted through a slot in the base and along a face of the valve body. The plate may include a head at one end to retain the plate in the slot. A valve may also be fixed to a base using a combination of a brace and a screw that threads into the base. The brace may include a lip that fits into a grove on the shaft of the screw. The valve body may include a lip to retain the combined screw and brace when the screw is not threaded into the base.

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.

A hydraulic drive system includes an oil supply device, an oil return device and a hydraulic cylinder circuit component. The circuit component includes a hydraulic cylinder, a first and a second two-position two-way electromagnetic directional valves. The cylinder includes a first chamber and a second chamber that has a piston rod. A first port of the first valve connects with the first chamber and a first port of the second valve connects with the second chamber. When the oil supply device connects to a second port of the first valve and a second port of the second valve connects to the oil return device, the piston rod is extended outwards. When the oil supply device connects to the second port of the second valve and the second port of the first valve connects to the oil return device, the piston rod is retracted.

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.

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.

An electronic execution unit controls and regulates a pneumatic valve assembly for a pneumatic movement. An application for controlling and regulating a valve assembly is or can be loaded so that it can be carried out on the electronic execution unit to carry out the pneumatic movement on the pneumatic valve assembly. An electronic valve controller for the open-loop control and closed-loop control of a valve assembly has at least one pneumatic valve for a pneumatic movement task.

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.

A valve module for mounting to a fluid distribution device, including a main body, which has two mutually opposed interface surfaces, which are designed for connection to a valve module or to a fluid distribution device wherein a distribution device connection for fluid coupling to a distribution device connection of the fluid distribution device or to a distribution device connection of another valve module and a working connection for fluidic coupling to a working connection of the fluid distribution device or a working connection of another valve module, is formed on each of the interface surfaces, wherein the main body is permeated by a fluid channel which extends between the two distribution device connections and the two working connections and to which a valve device is assigned to influence an open fluid channel cross-section.