Orbital Steering Control Valves for Sale in South Africa

Hydraulic Steering Control Valves for Earthmoving Machinery, Tractors, Loaders and Industrial Equipment

TOSOG Yellow Plant Solutions supplies hydraulic components and earthmoving machinery parts for customers across South Africa. We assist with sourcing orbital steering control valves, hydraulic steering units, steering metering units, and replacement steering components for a wide range of heavy equipment, agricultural machinery, construction machinery, and industrial applications.

Whether you need an orbital steering control valve for a wheel loader, tractor, motor grader, forklift, or other hydraulic machine, TOSOG can assist with identifying and sourcing a suitable replacement based on the machine model, steering system specifications, original part number, and application requirements.

Our focus is on helping customers source the correct hydraulic steering components to maintain reliable machine operation, minimise downtime, and support efficient equipment maintenance.

Looking for an orbital steering control valve for sale in South Africa? Contact TOSOG with your machine details, existing valve part number, photographs, or technical specifications to request a quotation.

Request a Quote: Contact TOSOG Yellow Plant Solutions for orbital steering control valve availability, pricing, and delivery options.

Orbital Steering Control Valve Suppliers in South Africa

An orbital steering control valve is a hydraulic component that directs oil flow to the steering cylinder when the operator turns the steering wheel. It is commonly used in hydrostatic steering systems where hydraulic pressure assists steering effort.

Also known as an orbital steering unit, hydraulic steering control unit, or steering metering unit, this component plays an important role in controlling steering movement and maintaining the manoeuvrability of machinery operating in demanding environments.

TOSOG assists customers looking for replacement orbital steering valves and hydraulic steering units for construction equipment, earthmoving machinery, agricultural tractors, forklifts, industrial vehicles, and other hydraulic applications.

Our sourcing assistance is suitable for maintenance teams, plant hire companies, workshops, equipment owners, agricultural operators, mining contractors, and parts resellers.

What Is an Orbital Steering Control Valve?

An orbital steering control valve is a hydraulic steering unit that meters and directs hydraulic fluid to the appropriate steering circuit. Many designs incorporate a gerotor or similar metering mechanism that controls the quantity of oil delivered in response to steering wheel movement.

Depending on the system design, the steering unit may also provide a degree of manual steering capability if hydraulic supply is lost. However, this depends on the valve design and the wider steering system.

Orbital steering units are widely used in machines that require controlled hydraulic steering, including tractors, wheel loaders, forklifts, agricultural equipment, and selected construction and industrial vehicles.

How Does an Orbital Steering Unit Work?

The orbital steering control valve receives hydraulic oil from the steering pump or designated hydraulic supply circuit. When the operator turns the steering wheel, the unit meters oil and directs it towards the appropriate steering cylinder connection.

The steering cylinder then moves the steering linkage or articulated chassis, depending on the machine design.

The correct steering unit must match the machine’s hydraulic system, required flow rate, operating pressure, displacement, port configuration, and steering circuit arrangement.

Installing an incorrectly specified orbital valve can result in poor steering response, excessive steering effort, leakage, overheating, or unsafe machine operation.

Orbital Steering Control Valve Models and Types

Orbital steering control valves are available in different displacements, pressure ratings, port configurations, mounting arrangements, and steering circuit designs.

The correct model depends on the machinery application and the manufacturer’s specifications.

Common Orbital Steering Valve Types

Valve Type	Description	Typical Applications
Standard orbital steering unit	Hydraulic metering unit for conventional hydrostatic steering systems	Tractors, industrial vehicles and selected loaders
Open-centre orbital steering valve	Designed for compatible steering circuits where the neutral-position flow path allows oil to continue through the system	Agricultural tractors and selected mobile machinery
Closed-centre orbital steering valve	Designed for compatible systems using a closed-centre hydraulic supply arrangement	Machinery with specified closed-centre steering systems
Load-sensing orbital steering unit	Works with compatible load-sensing hydraulic systems	Selected modern mobile machinery
Priority-valve-compatible steering unit	Used in systems where steering flow is managed through a priority arrangement	Wheel loaders, tractors and other mobile equipment
Steering control unit with integrated valves	Incorporates specified functions such as shock, suction, or check valves, depending on design	Applications requiring particular steering circuit protection
Replacement orbital steering unit	A replacement selected to match an existing component’s specifications	Machinery repairs and maintenance

Important: These categories are not universally interchangeable. The replacement must match the original steering circuit and the machine manufacturer’s requirements.

Common Orbital Steering Unit Displacements

Orbital steering control units are available in different displacement ratings, commonly expressed in cubic centimetres per revolution (cc/rev).

Examples of displacement values encountered in the market include:

50 cc/rev
63 cc/rev
80 cc/rev
100 cc/rev
125 cc/rev
160 cc/rev
200 cc/rev
250 cc/rev
315 cc/rev
400 cc/rev
500 cc/rev

These are illustrative examples of commonly encountered displacement classes, not a confirmed stock list or a guarantee that every manufacturer offers every size.

The correct displacement must be established from the original part number, equipment specifications, or the steering system manufacturer’s documentation. A higher displacement does not automatically mean better steering performance.

Orbital Steering Valve Configurations

Depending on the application, customers may require a steering unit with specific features, including:

Open-centre or closed-centre configuration.
Load-sensing compatibility.
Different steering displacement ratings.
Specific inlet, outlet, and cylinder port arrangements.
Particular mounting dimensions and shaft configurations.
Integrated check, shock, or suction valves.
Compatibility with the original steering pump and steering cylinders.

TOSOG can assist with sourcing a suitable replacement once the original valve identification and application requirements have been established.

Orbital Steering Control Valve Brands

TOSOG assists customers with sourcing hydraulic steering components from established hydraulic equipment manufacturers and suppliers, subject to application compatibility and availability.

When searching for an orbital steering control valve, customers may encounter the following brands and product families.

Brand	Product Category	Identification and Sourcing Notes
Danfoss	OSP and related hydrostatic steering units	Confirm the complete model designation and steering circuit configuration
Eaton	Hydrostatic steering control units and related hydraulic components	Verify the original Eaton model or cross-reference
Parker	Hydraulic steering units and mobile hydraulic components	Confirm the exact product family and application
Bosch Rexroth	Hydraulic steering components and mobile hydraulics	Check the complete model and technical specifications
M+S Hydraulic	Hydrostatic steering units and orbital steering components	Match displacement, ports, and valve configuration
Hydrocontrol	Mobile hydraulic components and steering-related products	Confirm the applicable product range
Hema	Hydraulic steering systems and related steering components	Verify application and exact product identification
Aftermarket manufacturers	Replacement orbital steering control valves	Check technical compatibility, manufacturing quality, and warranty

The brands listed above represent manufacturers or product families customers may encounter during sourcing. They are not a representation of confirmed TOSOG distributorships, current stock, or authorised dealer status.

Need a specific steering valve brand? Send TOSOG the brand name, model number, and photographs of the existing unit so that the correct replacement can be investigated.

Manufacturers of Orbital Steering Control Valves

Several manufacturers produce hydraulic steering units for mobile machinery, agricultural equipment, and industrial applications.

Danfoss Orbital Steering Units

Danfoss manufactures hydrostatic steering components used in a range of mobile hydraulic applications. Its OSP steering-unit family is associated with orbital steering technology.

When sourcing a Danfoss steering unit, check the complete model code, displacement, port configuration, steering circuit requirements, and mounting arrangement.

Eaton Hydraulic Steering Components

Eaton hydraulic steering products are encountered in mobile equipment and other hydraulic applications. The correct replacement must be selected according to the original product identification and system specifications.

Parker Hydraulic Steering Solutions

Parker supplies hydraulic components for industrial and mobile equipment. When considering a Parker replacement, verify the precise steering unit series and its compatibility with the machine’s hydraulic circuit.

Bosch Rexroth Hydraulic Components

Bosch Rexroth provides hydraulic solutions for industrial and mobile machinery. Customers looking for a Bosch Rexroth steering component should confirm the complete product code and application before ordering.

M+S Hydraulic Steering Units

M+S Hydraulic manufactures hydrostatic steering units and other hydraulic components for mobile machinery applications.

When sourcing an M+S Hydraulic orbital steering valve, verify displacement, pressure requirements, port layout, shaft type, and mounting dimensions.

Original Equipment and Aftermarket Steering Valve Manufacturers

Depending on the application, replacement steering units may also be available through original equipment suppliers or aftermarket manufacturers.

Before selecting an aftermarket orbital steering valve, confirm that the product meets the required technical specifications and is suitable for the intended steering system.

TOSOG sourcing assistance: We can help investigate original and aftermarket replacement options based on the available part number, machine details, and technical requirements.

Orbital Steering Control Valves for Earthmoving Machinery

Earthmoving machinery often operates in demanding environments where dependable steering is essential for productivity and operator control.

TOSOG supports the sourcing of steering-related hydraulic components for a range of equipment categories.

Wheel Loaders

Wheel loaders use hydraulic steering systems to manoeuvre around loading areas, stockpiles, quarries, construction sites, and industrial facilities.

When sourcing an orbital steering control valve for a wheel loader, verify the machine model, serial number, original steering unit identification, hydraulic system type, and required displacement.

Motor Graders

Motor graders require steering systems suited to their operating conditions and hydraulic architecture.

Before ordering a replacement steering unit, establish whether the machine uses a conventional orbital steering unit or another steering arrangement specified by the original manufacturer.

Agricultural Tractors

Agricultural tractors commonly use hydraulic steering systems designed to reduce steering effort and improve manoeuvrability.

The correct steering unit depends on the tractor model, steering cylinder arrangement, hydraulic supply configuration, and original part number.

Forklifts and Industrial Equipment

Selected forklifts and industrial vehicles use hydrostatic steering systems with dedicated steering control units.

Check the original equipment identification and steering circuit requirements before selecting a replacement.

Articulated Dump Trucks and Specialised Machinery

Some articulated and specialised mobile machines use hydraulic steering architectures that differ significantly from conventional orbital steering systems.

Do not assume that a standard orbital steering unit will suit an articulated dump truck or other heavy machine. Confirm the original steering design and component specifications before sourcing a replacement.

Hydraulic Steering Components and Related Products

In addition to orbital steering control valves, customers may need related hydraulic components to restore reliable steering performance.

Depending on the machine and application, related components may include:

Hydraulic steering pumps.
Steering cylinders.
Steering priority valves.
Hydraulic relief valves.
Steering hoses and hydraulic pipes.
Hydraulic fittings and adapters.
Hydraulic seals and O-rings.
Steering shafts and couplings.
Hydraulic filters.
Steering-system check valves.
Load-sensing components.
Hydraulic control valves.

A steering fault does not always mean the orbital steering unit itself has failed. Checking the associated hydraulic circuit can help identify the underlying problem and prevent unnecessary component replacement.

TOSOG can assist with sourcing related hydraulic parts based on the machine model, component identification, and repair requirements.

Common Symptoms of a Faulty Orbital Steering Control Valve

A malfunctioning steering unit may affect steering response, operator effort, or the overall performance of the hydraulic steering system.

Common symptoms include:

Heavy Steering

If steering becomes unusually difficult, possible causes include inadequate hydraulic supply, a faulty steering pump, a blocked filter, incorrect valve selection, internal leakage, or a problem with the steering cylinder.

Slow Steering Response

Delayed steering movement may result from insufficient oil flow, hydraulic restrictions, air in the system, internal leakage, or a problem elsewhere in the steering circuit.

Jerky or Inconsistent Steering

Intermittent or uneven steering can be associated with air contamination, unstable hydraulic pressure, mechanical binding, pump problems, or internal steering-unit faults.

Hydraulic Oil Leaks

Leaks around the steering unit may indicate damaged seals, loose connections, damaged ports, or other component defects.

Steering Wheel Turns Without the Expected Movement

This symptom can indicate a steering-unit fault, loss of hydraulic supply, a steering cylinder problem, or mechanical damage elsewhere in the steering system.

Unusual Noise During Steering

Noise may be caused by cavitation, restricted oil supply, aeration, excessive pressure, pump wear, or other hydraulic faults.

Safety note: Steering problems can make machinery unsafe to operate. Stop using the machine if steering control is compromised and arrange an inspection by a qualified technician. Diagnosis should follow the equipment manufacturer’s procedures.

How to Choose the Correct Orbital Steering Control Valve

Selecting the correct orbital steering control valve is essential for hydraulic compatibility, steering performance, and safe machine operation.

Before purchasing a replacement, establish the following information.

1. Machine Make and Model

Provide the machine manufacturer, model, and serial number.

For example, a wheel loader and an agricultural tractor may both use orbital steering technology but require different steering units.

2. Original Part Number

The original part number is one of the most useful references for identifying a replacement.

Provide the complete part number from the valve identification plate, machine parts catalogue, or original equipment documentation.

3. Manufacturer and Model Code

If the steering unit is marked Danfoss, Eaton, Parker, Bosch Rexroth, M+S Hydraulic, or another brand, provide the complete model code.

A brand name alone is not enough to establish compatibility.

4. Displacement Rating

Confirm the displacement in cc/rev where available.

Displacement affects the volume of hydraulic oil metered for each steering-wheel revolution and therefore influences steering response.

5. Hydraulic Circuit Type

Establish whether the system requires an open-centre, closed-centre, or load-sensing steering unit.

These configurations are not automatically interchangeable.

6. Pressure and Flow Requirements

The replacement must be suitable for the specified operating pressure, maximum flow, and hydraulic system design.

7. Port Configuration

Check the inlet, tank, and steering-cylinder ports, including thread type, size, position, and connection standard.

8. Mounting and Shaft Dimensions

Confirm the mounting bolt pattern, shaft dimensions, shaft type, and any coupling requirements.

9. Integrated Valve Functions

Determine whether the original steering unit includes specific check, shock, suction, or other integrated valves.

10. Application and Operating Conditions

Consider the machine’s operating environment, duty cycle, temperature conditions, and manufacturer’s requirements.

Providing this information helps reduce the risk of ordering an incompatible orbital steering valve.

Tips for Buying Orbital Steering Control Valves

Use these practical tips when sourcing an orbital steering control valve for earthmoving machinery, agricultural equipment, or industrial applications.

Tip 1: Match the Original Part Number

Start with the original steering unit’s part number or complete identification code. This is generally more reliable than searching by machine type alone.

Tip 2: Do Not Select a Valve by Appearance Only

Two orbital steering units can look similar but differ in displacement, internal valve arrangement, port configuration, or operating specifications.

Tip 3: Verify the Steering Circuit

Confirm whether the machine uses open-centre, closed-centre, load-sensing, or another specified hydraulic arrangement.

Tip 4: Check the Technical Specifications

Confirm displacement, pressure rating, flow requirements, shaft configuration, mounting dimensions, and port details before placing an order.

Tip 5: Investigate the Cause of Failure

If the existing steering valve has failed, inspect the hydraulic oil condition, filter, pump, hoses, cylinder, and related components where appropriate.

Contaminated oil or unresolved hydraulic faults may damage a replacement unit.

Tip 6: Ask About Product Origin and Warranty

For aftermarket components, request information about the manufacturer, product specifications, warranty terms, and applicable technical documentation.

Tip 7: Confirm Availability and Delivery Lead Time

If your machine is standing, confirm stock availability, dispatch arrangements, and estimated delivery timing before making operational commitments.

Tip 8: Supply Photographs Before Ordering

Clear photographs of the complete valve, identification plate, ports, shaft, and mounting face can help with initial identification.

Tip 9: Avoid Unverified Cross-References

A cross-reference should be supported by reliable manufacturer documentation or a technically verified replacement specification.

Tip 10: Prioritise Steering Safety

Do not operate machinery with unreliable or compromised steering. Have the steering system inspected and repaired by a qualified technician.

Why Source Orbital Steering Control Valves Through TOSOG?

TOSOG Yellow Plant Solutions supports the sourcing of hydraulic components and replacement parts for heavy equipment and industrial applications.

Our approach is focused on helping customers identify the component required for their application and obtain a quotation based on the available technical information.

Our Sourcing Support Includes

Assistance with identifying orbital steering control valves.
Sourcing enquiries for original and aftermarket replacement options.
Part-number and application-based identification.
Assistance with technical cross-reference enquiries.
Hydraulic steering component sourcing.
Support for earthmoving machinery and agricultural equipment applications.
Quotation assistance for maintenance teams, workshops, plant hire companies, and equipment owners.
Delivery and collection arrangements confirmed during the quotation process.

TOSOG operates a parts-sourcing model. Customers should confirm availability, product specifications, pricing, warranty terms, and delivery arrangements before placing an order.

We are based in South Africa and focus on supplying customers within the South African market. Customers can arrange collection by agreement.

Frequently Asked Questions About Orbital Steering Control Valves

1. What is an orbital steering control valve?

An orbital steering control valve is a hydraulic steering unit that meters and directs hydraulic fluid to the steering circuit when the operator turns the steering wheel. It is commonly used in hydrostatic steering systems on tractors, loaders, industrial vehicles, and selected mobile machinery.

2. What is another name for an orbital steering control valve?

It may also be called an orbital steering unit, hydraulic steering unit, steering control unit, hydrostatic steering unit, or steering metering unit. Exact terminology varies by manufacturer and application.

3. Where can I buy an orbital steering control valve in South Africa?

You can contact TOSOG Yellow Plant Solutions to enquire about sourcing an orbital steering control valve for your machinery. Provide the original part number, machine details, photographs, and technical specifications so that the appropriate replacement can be investigated.

4. Which brands manufacture orbital steering control valves?

Manufacturers and product families encountered in this market include Danfoss, Eaton, Parker, Bosch Rexroth, and M+S Hydraulic. Availability and suitability depend on the required model and application.

5. What information do I need to order an orbital steering valve?

Ideally, provide the machine make, model, serial number, original valve part number, manufacturer model code, displacement, port configuration, and photographs of the identification plate and connections.

6. Are all orbital steering control valves interchangeable?

No. Steering units can differ in hydraulic circuit design, displacement, pressure rating, flow requirements, port arrangement, mounting dimensions, and internal valve functions. A replacement must match the application requirements.

7. What does the displacement rating of an orbital steering unit mean?

Displacement, expressed in cc/rev, indicates the nominal volume of hydraulic fluid metered by the unit per revolution of the steering input under its specified operating conditions. It influences steering response and must match the system design.

8. What is the difference between open-centre and closed-centre steering valves?

Open-centre and closed-centre steering units are designed for different hydraulic circuit arrangements. An open-centre system generally allows flow through a neutral-position path, while a closed-centre system uses a different supply arrangement. The correct type depends on the machine’s hydraulic design.

9. Can an orbital steering valve be repaired?

Some steering units can be repaired or reconditioned, depending on their design, condition, parts availability, and manufacturer requirements. Others may require replacement. A qualified hydraulic technician should inspect the component and determine the appropriate option.

10. Why is my machine’s steering heavy?

Heavy steering can be caused by a faulty steering pump, low hydraulic supply, restricted filters or hoses, internal leakage, cylinder problems, mechanical binding, or a defective steering unit. A proper diagnosis is necessary before replacing components.

11. Can I replace a Danfoss orbital steering unit with an aftermarket valve?

A replacement may be possible, but it must match the original unit’s required displacement, circuit configuration, pressure and flow specifications, port arrangement, mounting dimensions, and other application-specific requirements. A visual match is not sufficient.

12. Does TOSOG stock orbital steering control valves?

Availability varies according to the manufacturer, model, and specification required. Contact TOSOG with the part number and machine details to enquire about current availability and sourcing options.

13. Can TOSOG help identify an orbital steering valve from photographs?

Yes. Photographs of the identification plate, valve body, hydraulic ports, mounting face, and shaft can assist with initial identification. Additional machine information may be required to confirm compatibility.

14. Can I request a quotation for multiple hydraulic steering components?

Yes. Provide a parts list with part numbers, descriptions, quantities, machine models, and photographs where available. This helps with the identification and quotation process.

15. How long does delivery take?

Delivery lead time depends on the product, stock availability, supplier location, and transport arrangements. Confirm the estimated delivery time with TOSOG when requesting a quotation.

16. Does TOSOG supply orbital steering valves for wheel loaders and tractors?

TOSOG can assist with sourcing enquiries for orbital steering units used in wheel loaders, tractors, and other compatible hydraulic applications. The original part number and machine specifications are required to establish a suitable replacement.

17. What should I do if the original steering valve’s part number is missing?

Provide the machine make, model, serial number, clear photographs of the complete valve, mounting dimensions, port details, and any visible manufacturer markings. Identification may require consultation of the machine parts catalogue or hydraulic system documentation.

18. How do I request an orbital steering control valve quotation from TOSOG?

Send the original part number, machine details, quantity required, photographs, and delivery location. TOSOG can then investigate the applicable replacement options and provide a quotation subject to identification and availability.

Request a Quote for Orbital Steering Control Valves

Are you looking for an orbital steering control valve for a wheel loader, tractor, forklift, motor grader, or another hydraulic machine?

Contact TOSOG Yellow Plant Solutions for assistance with identifying and sourcing the required steering unit.

To speed up the quotation process, please provide:

Machine make: Manufacturer of the equipment.
Machine model: Exact model designation.
Serial number: Machine serial or product identification number.
Original part number: Orbital steering valve part number, if available.
Valve manufacturer: Danfoss, Eaton, Parker, Bosch Rexroth, M+S Hydraulic, or another brand.
Technical specifications: Displacement, pressure rating, port configuration, and model code, where available.
Quantity required: Number of steering units needed.
Photographs: Identification plate, complete valve, mounting face, shaft, and ports.
Delivery location: Town or city in South Africa.

Providing accurate information helps us investigate the appropriate steering unit and reduce the risk of an incorrect order.

TOSOG Yellow Plant Solutions – Your Sourcing Partner for Hydraulic Components and Earthmoving Machinery Parts in South Africa.

Request your quotation today. Contact our team through the TOSOG website at tosog.co.za or use the company’s available contact channels to submit your parts enquiry.

Orbital Steering Control Valves for Sale South Africa