Custom Hydraulic Valve Stacks for Mobile Equipment
Need to control several cylinders or motors from one compact, machine-specific assembly? OCGF designs and assembles custom hydraulic valve stacks around your required flow, pressure, control strategy, installation space and operating sequence.
- On/off, proportional, load-sensing and Flow Sharing/LUDV configurations
- Per-function flow setting and application-specific protection options
- In-house assembly backed by practical hydraulic support
A hydraulic valve stack engineered around your machine
A hydraulic valve stack combines an inlet section, directional valve sections and any required control or protection modules in one compact assembly. Each section operates a specific cylinder or motor. The resulting valve bank is easier to integrate and maintain than a collection of separate valves, hoses and fittings.
OCGF configures the assembly around your hydraulic schematic and duty cycle: actuator types, required flow, working pressure, simultaneous movements, control method, coil voltage, electrical connections, available envelope and environmental constraints.
This page covers a complete, custom-configured valve assembly. If you need an individual catalog section or replacement component, browse our modular directional valve range instead.
Why specify a custom hydraulic valve bank?
- Match the number of sections to the machine instead of adapting the machine to a standard valve bank.
- Combine on/off, proportional, load-sensing or Flow Sharing functions where the selected platform allows it.
- Set flow by function to achieve the required cylinder or motor speed.
- Integrate pressure-relief, shock-relief and anti-cavitation functions where required by the circuit.
- Reduce external plumbing, connection points and installation complexity.Keep the system modular, serviceable and easier to document.
Choose the right control strategy
On/off directional control
On/off sections are suited to functions that need positive actuation without progressive speed control. They provide a robust and straightforward solution for many auxiliary machine movements.
Proportional control
A proportional section varies flow in response to an electrical command. Use it when the operator needs smooth acceleration, adjustable speed or finer coordination of a hydraulic movement.
Load Sensing
A load-sensing architecture communicates circuit demand to the pump so that the system supplies the pressure and flow required by the active functions. Correctly engineered, it can reduce unnecessary energy losses and improve machine response.
Flow Sharing / LUDV
Flow Sharing is valuable when several functions must operate at the same time. If total demand exceeds available pump flow, the control block shares the available flow among the active sections in proportion to the operator commands. This helps prevent one high-pressure function from abruptly stopping the other movements and gives the operator more predictable machine behavior.
What can be configured?
- Open-circuit inlet section sized for the available supply flow.
- Directional sections for cylinders and motors, with on/off or proportional actuation.
- Pressure compensation and Flow Sharing/LUDV where supported by the selected series.
- Individual port-flow adjustment where the section design allows it.
- Secondary relief, shock-relief and anti-cavitation functions.
- Manual push-button or lever override, subject to section availability.
- Coil voltage and electrical connector selection for the machine harness.
- End plate, port orientation and overall arrangement to suit the installation envelope.
Reference data for the EDC configuration supplied
Item | Reference capability |
| Architecture | Size 6 modular directional control valve for open circuits |
| Number of sections | Up to 10 directional valve elements, configuration dependent |
| Maximum pressure | 310 bar on P, A and B; 210 bar on T |
| Proportional version | Nominal flows of 4, 8, 12, 16, 25, 40 and 55 l/min; up to 62 l/min under stated conditions |
| On/off version | Maximum flow stated in the supplied sheet: 27 l/min |
| Inlet sections | Stated inlet capacities: 50, 80 or 120 l/min depending on size |
| Electrical supply | Proportional: 12 or 24 VDC; additional DC and AC voltages on on/off versions |
| Connectors | EN 175301-803, AMP-J or Deutsch DT04-2P depending on version |
| Ports | G 3/8, G 1/2, G 3/4, SAE 8 or SAE 10 depending on element |
Typical mobile and special-machine applications
Custom valve stacks are particularly relevant when a compact machine must coordinate several hydraulic movements:
- truck-mounted and mobile cranes
- aerial work platforms and aerial ladder vehicles
- forklifts and material-handling equipment
- agricultural sprayers and implements
- harvesters and crop-handling machines
- front loaders and construction equipment
- refuse collection vehicles
- road sweepers and municipal vehicles
- special-purpose machines with simultaneous hydraulic functions
From schematic to assembled valve stack
Request submission
Send your hydraulic schematic or a functional specification describing the required movements.
Analysis
OCGF reviews flow, pressure, actuators, simultaneous functions, priorities and integration constraints.
Requirements definition
We define the valve architecture, sections, flow settings, protection functions, actuation and connectors.
Validation
The proposed configuration is reviewed with you before assembly.
Assembly
The valve stack is assembled in our workshop and prepared for integration into your machine.
Information that speeds up your quotation
- Existing hydraulic schematic or a clear functional description.
- Number and type of cylinders and motors, including the operating sequence.
- Required flow per function and total pump flow available.
- Working and maximum system pressure.
- Simultaneous movements, priority functions and required behavior at pump saturation.
- On/off or proportional control, voltage and connector requirements.
- Available installation envelope, port orientation and environmental constraints.
- Required quantity, project timing and destination market.
Discuss your custom hydraulic valve stack with OCGF
Whether you are developing a new machine, upgrading an existing valve bank or simplifying a complex hydraulic installation, send us your schematic or describe the functions you need to control. We will help you define an assembly that fits your performance, integration and maintenance requirements.
FAQ - Custom hydraulic valve stacks
A valve stack is assembled from an inlet section and multiple directional valve sections. A drilled manifold is machined from a solid aluminum or steel block to connect cartridge valves and integrated functions. A valve stack is modular; a drilled manifold can deliver a highly compact, application-specific circuit.
The EDC configuration in the supplied literature supports up to 10 directional elements. The practical number depends on flow, pressure drop, installation space, safety functions and the machine duty cycle.
Flow Sharing is useful when several functions must remain coordinated and total demand can temporarily exceed pump capacity. It distributes the available flow among the active functions according to the operator commands.
Load sensing controls pump delivery according to circuit demand. Flow Sharing manages how the available flow is distributed between several active valve sections, particularly when the pump is saturated.
Some platforms allow on/off and proportional functions to be combined in one assembly. The proposed combination must be checked during the engineering review.
For the EDC configuration supplied, maximum pressure is stated as 310 bar on P, A and B. Permitted flow depends on the selected working sections and inlet element and must be verified against pressure drop and simultaneous operation.
Push-button or lever overrides are available on selected sections and options. Include this requirement in the initial project brief.
Ideally, send the hydraulic schematic, required flow and pressure, actuator data, simultaneous movements, control type, voltage, connectors, installation envelope and required quantity.