The growing role of hydrogen in the energy transition
Hydrogen is emerging as a versatile energy carrier that can decarbonize sectors that are hard to electrify, including heavy industry, long-distance transportation, and aviation. Green hydrogen, produced from renewable energy sources, offers a zero-emission alternative to fossil fuels. However, scaling up hydrogen production, transport, and utilization requires specialized technology that can handle the unique challenges posed by this gas, such as high pressure, safety concerns, and efficiency. This is where Müller Co-ax's innovative valve solutions come into play.

Muller Co-ax: Revolutionizing Hydrogen Applications with Coax Valves
Müller Co-ax GmbH's coax® valves are engineered for demanding hydrogen applications. The company offers a tailored range of products that address the high-pressure, safety, and space constraints typical in hydrogen systems. One standout product is the KX1000 high-pressure valve, which has been designed for use in hydrogen environments where performance and reliability are paramount.
Key features of the KX1000 High-Pressure valve
- Tightness under extreme pressure
The KX1000 valve ensures bubble-free sealing at pressures up to 1,000 bar, making it ideal for hydrogen transport and storage. This high level of sealing reliability is critical for safety in hydrogen systems, which often operate under intense pressure conditions.
- Compact and efficient design
Despite its robust capabilities, the KX1000 boasts an extremely compact design. With a diameter of just 114 mm and a length of 205 mm, it is perfectly suited for space-constrained environments such as hydrogen filling stations or enclosures where every millimeter counts.
- High throughput for rapid refueling
The large nominal diameter of the KX1000 ensures fast filling and emptying times, making it an excellent choice for hydrogen refueling stations. As the industry moves towards larger refueling volumes, this valve design helps increase the efficiency of refueling operations, reducing downtime and improving overall throughput.
- Two-way flowability
Thanks to its pressure-balanced design, the KX1000 allows bi-directional operation, meaning it can be flushed from both sides while maintaining a tight seal at the valve seat. This feature enhances operational flexibility and simplifies the design of hydrogen systems, reducing the need for multiple valves.
- Safety and reliability
Hydrogen applications require strict safety measures, especially in potentially explosive environments. The KX1000 valve is designed to operate safely in ATEX Zone 2 areas and comes equipped with optional inductive limit switches for real-time monitoring of the valve’s position, ensuring enhanced operational safety.
- Durable and Reliable for Long-Term Use
With adjustable flow restrictors for gradual opening and closing, the KX1000 offers extended system durability. These features minimize wear and tear, contributing to the long-term reliability of hydrogen systems, where regular maintenance can be challenging and costly.
Meeting Future Hydrogen Challenges
As hydrogen continues to grow in importance, Müller Co-ax is well-positioned to meet the evolving needs of this dynamic industry. Whether it’s for hydrogen transport, storage, or refueling stations, the KX1000 valve provides a versatile, reliable solution that ensures safety, efficiency, and long-term performance.
With more than 350 employees, eight subsidiaries, and 30+ distribution partners worldwide, Müller Co-ax GmbH brings decades of experience and expertise to the table. Their production and development hub in Forchtenberg is at the forefront of innovation, constantly pushing the boundaries of what is possible in hydrogen applications.

The hydrogen economy is accelerating, and advanced technology is key to ensuring its success. Müller Co-ax GmbH is leading the charge with its coax® valves, which are designed to overcome the unique challenges of hydrogen systems. The KX1000 high-pressure valve, with its compact design, high throughput, and robust performance, is a prime example of how Müller Co-ax is helping to shape the future of clean energy. By offering tailor-made solutions for hydrogen applications, the company is playing a pivotal role in driving the global energy transition forward.
Whether you are building the next generation of hydrogen refueling stations, transporting hydrogen across long distances, or developing hydrogen-powered systems, Müller Co-ax is your partner for efficient, reliable, and safe valve solutions.