Coaxial valve for high pressures, fast response times, and demanding media
Coaxial valves for gas, compressed air, and fluids
Coaxial valves from RSG ...
… are used in applications where conventional valve technology reaches its limits. When high switching frequencies, aggressive media, compact installation spaces, or high differential pressures come into play, it is essential to have valve technology that operates reliably over the long term.
We design and manufacture coaxial valves in Germany for industrial applications in mechanical engineering, plant engineering, gas technology, and automated process systems.
Our coaxial valves are designed for high-speed cycling, high-pressure applications, and harsh operating conditions.
Challenges with Coaxial Valves in Industrial Plants
Many industrial systems today operate in a much more compact manner, at higher speeds, and with greater power densities than they did just a few years ago. As a result, the demands placed on the coaxial valves used in these systems are also increasing.
Common challenges encountered in practice:
- High operating pressures with a compact design
- Pulsating pressure systems with rapid load cycles
- high switching frequencies during continuous operation
- contaminated or abrasive media
- viscous liquids or industrial gases
- Tight installation spaces in valve manifolds or test systems
- Leakage problems with conventional valves
- unstable switching operations under varying pressure conditions
Especially in gas applications or highly dynamic processes, unsuitable valves often lead to unnecessary downtime or increased maintenance costs.
Many standard solenoid valves are sensitive to high differential pressures or contaminated media. At the same time, automated systems require fast switching times and consistently reproducible switching operations.
Our coaxial valves were designed specifically to meet these requirements.
Advantages of our coaxial valves at high pressures and with fast switching cycles
Our coaxial valves are designed for applications that require high pressure ranges, fast switching times, and consistently stable switching operations. The coaxial design results in minimal flow losses, enabling high flow rates in a compact design.
Additional benefits of our coaxial valves:
- Pressure ranges up to 300 bar
- fast response times
- high switching frequencies
- Over 10 million fault-free switching cycles in test bench applications
- Zero-leakage sealing systems for high sealing performance
- compact design with a small footprint
- reduced operating forces
- reliable operation in pulsating pressure systems
- suitable for aggressive, abrasive, and high-viscosity media
- Compatible with gas, water, and fluid systems
- Electric or pneumatic actuation is possible
- Integration with external control systems
- Custom Q-values tailored to the application
- High temperature resistance, from cryogenic applications up to +180 °C
Our coaxial valves demonstrate their advantages particularly in compact machine modules, valve islands, test systems, and automated production lines, where fast cycle times and limited installation space are common.
RSG Coaxial Valves: The Solution for Demanding Applications
The coaxial design allows for a straight-line flow of media along the central valve axis. This results in significantly lower flow losses than with many conventional valve designs.
This ensures:
- high flow rate
- low pressure losses
- smooth gear shifts
- high pressure resistance
- compact designs
Our coaxial valves are particularly suitable for:
- Compressed air systems
- industrial gases
- Water treatments
- Oils and lubricants
- viscous fluids
- abrasive media
- chemically demanding applications
We configure each coaxial valve to suit the specific application.
These include:
- nominal diameter
- pressure range
- Kv value
- Material
- Sealing system
- type of operation
- Connection type
Available materials:
- brass
- Stainless steel 1.4305
- Stainless steel 1.4571
- Galvanized steel
- Nickel-plated steel
- aluminum
Our coaxial valves are available in 2/2-way and 3/2-way versions, as well as in direct-acting or pilot-operated configurations.
Examples of Coaxial Valves in Industry and Plant Engineering
Examples of Coaxial Valves in Industry and Plant Engineering
Our coaxial valves are used worldwide in mechanical engineering, plant engineering, gas technology, and automated industrial processes.
Coaxial valves with external control and a high switching frequency were integrated into an automotive test bench. The valves achieved over 10 million fault-free switching cycles under continuous load.
In an automated production line, the compact design of our coaxial valves made it possible to reduce the required installation space by 50%. At the same time, switching speed and process stability improved significantly.
Other applications for our coaxial valves:
- Gas control systems
- Compressed air systems
- Processing plants
- Test benches
- Hydraulic applications
- plant engineering
- automated manufacturing systems
- chemical industry
- Mechanical Engineering
- industrial fluid technology
Why the coaxial design of coaxial valves offers technical advantages
Unlike conventional solenoid valves, the medium flows axially along the central axis in a coaxial valve. This results in significantly less deflection and minimal flow resistance.
This makes it possible to:
- lower pressure drop
- higher flow rates
- reduced operating forces
- fast response times
- stable switching characteristics
- Compact designs with high compressive strength
The coaxial design is particularly suitable for:
- high switching frequencies
- pulsating printing systems
- aggressive media
- contaminated media
- high-viscosity fluids
- industrial gases
- Applications with high differential pressures
In addition, our coaxial valves can be combined with electric actuators, external control systems, and modular controller systems. This makes them ideal for modern automation and Industry 4.0 applications.
About Us: A Coaxial Valve Manufacturer Based in Germany
We have been developing and manufacturing coaxial valves for over 30 years at our facility in Germany. Thanks to our modular system, we are able to cost-effectively provide both standard solutions and custom designs.
Our clients come from, among other places:
- Mechanical Engineering
- chemical engineering
- plant engineering
- Gas Technology
- Energy Technology
- medical technology
- Processing industry
What sets us apart:
- Technical advice from experienced representatives
- custom valve design
- high delivery capacity
- Manufactured in Germany
- ISO 9001-certified processes
- flexible customization thanks to a modular system
We support projects from the technical design phase through to mass production.
Coaxial Valve Consultation and Technical Design
Choosing the right coaxial valve is often critical to the stability of the entire process.
We can help you with:
- the design of the pressure range
- the selection of suitable materials
- the definition of the appropriate Kv value
- choosing the right type of actuation
- integration into existing systems
You can get help selecting the right coaxial valve for your application by using our contact form or by speaking directly with our team.
Summary of Coaxial Valves from RSG
When fast response times, high pressure ranges, and maximum operational reliability are required, our coaxial valves offer a reliable solution for demanding industrial applications.
Our coaxial valves combine:
- Pressure ranges up to 400 bar
- high switching frequencies
- fast response times
- minimal flow losses
- high airtightness
- compact designs
- custom configuration
- modular integration
- high temperature resistance
- long service life
Whether for mechanical engineering, plant engineering, gas applications, or automated production systems—we develop coaxial valves that are precisely tailored to your needs.
Inquire now – your valve solution starts here
Are you planning a new dosing system, looking to optimize processes, or searching for replacements for existing components?
Use our contact form —direct, secure, and non-binding.
Our team will get back to you quickly with a tailor-made solution. Together, we will find the valve that suits your application.
FAQ – Frequently Asked Questions About Coaxial Valves
Coaxial valves operate reliably even under high differential pressures, as their coaxial design directs the flow of media axially through the valve. This results in lower actuation forces and a more reliable switching function than is the case with many conventional solenoid valves.
Our coaxial valves are suitable for technical gases, compressed air, water, oils, viscous fluids, and abrasive or corrosive media. The exact design depends on the medium, temperature, and pressure range.
Gas applications often require fast switching times, high leak tightness, and stable performance under varying pressure conditions. Due to their design, coaxial valves are ideally suited for such applications.
The Kv value describes the valve's flow capacity. Accurate determination of the Kv value is crucial to ensure that flow rate, pressure drop, and switching behavior are optimally matched to the application.
Directly actuated coaxial valves are actuated directly by the actuator. Externally actuated versions also use an external control signal. The appropriate version depends on the pressure range, the medium, and the process requirements.
Yes. We customize coaxial valves in terms of material, sealing system, pressure range, nominal diameter, Kv value, actuation type, and connection design to ensure that the valve solution is precisely tailored to the specific application.
Service life depends on the medium, pressure, temperature, and cycling frequency. Our coaxial valves are designed for continuous industrial use and offer a long service life even at high cycling frequencies.
Coaxial valves are used in a variety of fields, including mechanical engineering, plant engineering, chemical engineering, gas technology, medical technology, energy technology, the process industry, automation technology, as well as in test benches and industrial compressed air systems—particularly in applications involving high pressures, fast switching cycles, aggressive media, or limited installation space.