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High-pressure coaxial valve KB15
- In the case of the lateral high-pressure valves, the valve drive is arranged on the side.
- They are used wherever high pressures of up to 500 bar have to be controlled at high flow rates.
- The high-pressure valves are available with either a solenoid or a pneumatic drive.
- Among other things, the valves are used in the refuelling process or in high-pressure test stands.
Coaxial high-pressure valve KB15
- No need for dynamic plastic seals: The valve does not need plastic dynamic seals, which makes it suitable for use in cryogenic technology down to -196 °C.
- High pressure resistance: It is suitable for applications with pressures of up to 400 bar, which makes it ideal for high-pressure applications.
- Alternate flow: The valve is designed to allow media to flow in both directions, which can eliminate the need for multiple valves.
- Maintenance-free and insensitive to dirt: Thanks to its special design, the valve is maintenance-free and insensitive to dirty media, which increases its service life.
- Compact size: The integrated drive results in a compact design that allows installation even where space is limited.
- Fast switching times: The pressure-balanced design allows fast and reproducible switching operations in less than 30 milliseconds.
- Sealed against back pressure: When closed, the pressure on the outlet side can be higher without causing leakage.
- Optional extensions: The valve can be equipped with various options such as alternative pilot valves, limit switches or special plug connectors to meet different requirements.
Main features
- Mechanical line connection: threaded socket G 3/8
- Nominal width: DN 1.5-3 mm
- Kv value: 1.1 - 5.2 l/min
- Pressure range: 0-500 bar
- Temperature range: -20 to +100 °C
- Protection class: IP65
Applications
- Hydrogen production – control of high-pressure gas flows in electrolysers and reformer systems
- Hydrogen storage – regulation of pressure in high-pressure storage tanks and tank systems
- Hydrogen refuelling – Use in filling stations for precise pressure control when refuelling fuel cell vehicles
- Fuel cell systems – Control of hydrogen flow for efficient energy conversion
- Transport and distribution – High-pressure control in pipelines and mobile hydrogen transport containers
- Safety and shut-off systems – Use in emergency shutdown and pressure relief systems to increase operational safety
- Industrial hydrogen utilisation – integration into high-pressure processes in refineries, steelworks and chemical production plants
Contact us
- With 65 years of experience in the development, production and worldwide distribution of valves, müller co-ax gmbh is the right partner for you. Interested? Please contact us using the seller form.
| Brand | coax |
| Max Pressure (in bar) | 400 |
| Connector Threading | G 3/8 |
| Ingress Protection Rating | IP65 |
| Max Ambient Temperature (in °C) | 80 |
| Min Ambient Temperature (in °C) | -20 |
| Max Medium Temperature (in °C) | 100 |
| Min Medium Temperature (in °C) | -20 |
müller co-ax gmbh
coax® – Valve Technology that Drives the Hydrogen Future
müller co-ax gmbh delivers cutting-edge valve solutions for every stage of the hydrogen value chain – from production to application:
- Hydrogen production / electrolysis
- Storage
- Transport
- Refueling
- Test benches
Our coax® valves are specifically engineered for hydrogen-based systems. They combine a compact design, high flow rates, wide pressure ranges, and the use of hydrogen-resistant materials – making them ideal for installation in tight or space-constrained environments.
With integrated limit switches, valve positions (open/closed) can be directly and reliably detected – a critical feature for automated systems and safety-relevant applications.
A standout feature: The magnetically operated coax® valves are uniquely designed to remain leak-tight to the atmosphere even if the seals begin to wear. In other words, there is no operational connection to the external environment – ensuring zero hazardous leakage, no skin contact with media, and maximum operational safety.
These closed valve assemblies are the perfect choice for demanding media such as gaseous hydrogen, liquid ammonia, or methanol – and are ideally suited for use in explosive environments.
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