At MacScott Bond, we pride ourselves on supplying high-quality hydraulic components from leading manufacturers to help engineers and technicians design efficient, reliable, and serviceable hydraulic systems. CETOP valves are a central part of this mission. Whether you are building a new hydraulic system or upgrading an existing one, CETOP valves offer unmatched compatibility, engineering reliability, and modular flexibility.
As trusted suppliers of both Bosch Rexroth and Atos CETOP valves, MacScott Bond is your go-to source for hydraulic valve solutions across a range of industrial applications.
What Are CETOP Valves?
Size comparison showing standard mounting surfaces for directional control valves:
|
CETOP |
ISO Standard |
Nominal Size |
NG Size |
|
CETOP 03 |
ISO 4401-03 |
6 mm |
NG6 |
|
CETOP 05 |
ISO 4401-05 |
10mm |
NG10 |
|
CETOP 07 |
ISO 4401-07 |
16 mm |
NG16 |
|
CETOP 08 |
ISO 4401-08 |
25 mm |
NG25 |
|
CETOP 10 |
ISO 4401-10 |
32 mm |
NG32 |
CETOP valves are hydraulic valves that adhere to standards set by CETOP (Comité Européen des Transmissions Oléohydrauliques et Pneumatiques) or the European Fluid Power Committee. CETOP sets guidelines for the dimensional and mounting characteristics of hydraulic components, especially directional control valves.
When a valve is described as ‘CETOP 3’ or ‘CETOP 5’, this refers to its conformity with specific size and porting interface standards. For instance, CETOP 3 typically refers to a valve with NG6 (Nominal Size 6) mounting, while CETOP 5 corresponds to NG10. These standards enable valves from different manufacturers to be interchangeable in terms of mounting and connection, offering significant advantages in system design, maintenance, and future scalability.
Why CETOP Standardisation Matters
Hydraulic systems rely on the seamless interaction between pumps, actuators, valves, and control elements. CETOP standards promote:
- Interchangeability: With standardised mounting patterns and port sizes, engineers can replace or upgrade valves from different manufacturers without altering the hydraulic manifold block or its associated pipework
- Simplified System Design: CETOP valves allow designers to focus on the valve performance characteristics rather than concerns for custom fittings and layouts
- Reduced Downtime: Replacement valves for obsolete components or upgrades are easier to source and install, thanks to compatibility across brands
- Global Supply Chain: Because it is an internationally recognised standard, CETOP valves are widely available from reputable brands like Bosch Rexroth and Atos, and both suppliers’ ranges are available through MacScott Bond
Types of CETOP Valves
At MacScott Bond, we supply a wide selection of CETOP-compliant valves, catering to various system requirements and applications.
1. Directional Control Valves
Directional control valves are used to control the start, stop, and direction of fluid flow within a hydraulic system. They are typically solenoid-operated and are one of the most commonly used CETOP valve types.
| Directional Control Valves | Functions |
| Solenoid-Operated CETOP Valves | Electrically actuated to shift flow paths – widely used in automation and machinery where quick and reliable switching is needed |
| Manual CETOP Valves | Lever-operated options for systems where electrical actuation is impractical |
2. Pressure Control Valves
These valves regulate pressure within the system to protect components and ensure consistent operation. CETOP pressure valves include:
| Pressure Valve | Functions |
| Relief Valves | Prevent overpressure conditions |
| Sequence Valves | Direct flow based on pressure thresholds |
| Reducing Valves | Maintain a lower pressure in certain parts of the system |
3. Flow Control Valves
Flow control CETOP valves manage the volume flow rate of hydraulic fluid passing through the system to control actuator speed.
| Flow Control Valve | Functions |
| Throttle Valves | Regulate fluid flow manually or automatically |
| Flow Regulators | Maintain constant flow regardless of pressure fluctuations |
Each valve type plays a crucial role in system performance, and CETOP options ensure easy integration into manifold blocks and sub-plates.
CETOP Valve Sizes and Designations
CETOP sizes are typically indicated by a number, which refers to the valve’s mounting dimensions:
| CETOP Sizes | Functions |
| CETOP 3 / NG6 | Ideal for compact machinery and moderate flow rates |
| CETOP 5 / NG10 | Suitable for systems with higher flow and pressure requirements |
| CETOP 7 / NG16, CETOP 8 / NG25 and others | For heavy-duty or industrial-scale applications |
At MacScott Bond, our team can guide you through selecting the appropriate size based on your system’s pressure, flow rate, and space constraints.
Advantages of CETOP Valves
CETOP valves offer a host of technical benefits that make them a first-choice solution for equipment designers, OEMs, system integrators, and maintenance engineers alike.
- Compact Modular Design: Easily mounted on standard manifolds, which allows for space-saving and centralised valve arrangements. Specifying CETOP interfaces has the benefit of optimising CAE and CAD libraries for the reuse of engineering design data
- High Repeatability and Reliability: Especially in solenoid versions, CETOP valves are engineered for high-cycle performance with minimal maintenance
- Ease of Maintenance: Quick valve replacement, with no need to alter system piping or equipment layout
- Wide Range of Functions: These valves cover nearly all operational needs in hydraulic circuits, from directional control to pressure and flow regulation
- Modularity and Standardised Design: The repeatable geometry of CETOP valves is fundamental to their benefits in both the design and manufacturing processes. It allows for future upgrades or reconfigurations without needing to start from scratch or be tied to a single brand. This standardisation also saves engineers significant time and cost by enabling them to reuse existing CAD-CAM files and engineering design libraries.
- Manufacturing and Quality Assurance: In the manufacturing phase, the standardised hole patterns simplify the creation and use of essential equipment like tooling, jigs, and fixtures, ensuring consistent production. The standardised interface also makes crucial manufacturing steps, such as pressure testing and flushing, straightforward. Blanking plates or flushing blocks can be easily fitted to the CETOP interface, which is vital for removing contamination and debris and demonstrating compliance with cleanliness standards, ensuring the longevity and performance of the hydraulic system.
Applications of CETOP Valves
CETOP valves are used in a vast array of industries due to their flexibility and robust construction. Some of the applications are listed and described below.
- Manufacturing and Automation: For controlling presses, lifting devices, and CNC machines.
- Mobile Equipment: In agricultural and construction vehicles, where performance and serviceability are critical.
- Marine and Offshore: Used in hydraulic winches, steering systems, and hatch covers.
- Energy and Utilities: Including turbine control systems, power plant maintenance, and water treatment.
- Material Handling: Forklifts, conveyors, and robotic arms benefit from the valves’ precise control.
Why Choose MacScott Bond?
As an established British engineering company with decades of hydraulic systems experience, MacScott Bond is proud to supply CETOP valves from premium manufacturers such as Bosch Rexroth and Atos. Whether you're designing a new system or sourcing replacements for existing equipment, we offer:
- Expert technical support and system design advice
- Fast delivery from UK stock
- Genuine, CE-marked valves from leading OEMs
- Competitive pricing and volume discounts
Our team works closely with clients to specify the right valve solutions, ensuring both performance and compliance with industry standards. Contact MacScott Bond today for expert advice and access to a complete range of CETOP hydraulic valve solutions.
