Valves are crucial for controlling pneumatic processes in hydrogen application, especially so-called pilot valves that control other components such as process or media valves using control air. These valves do not transport the hydrogen themselves, but are part of the higher-level control architecture.
A valve terminal is a combination of several such individual valves that are mounted together on a support plate or in a housing. Instead of wiring and connecting each valve individually, all control and supply cables are bundled together. Modern valve terminals also have integrated safety functions and digital diagnostic interfaces; these are ideal for use in complex hydrogen systems. This not only simplifies control, but also creates the basis for predictive maintenance and greater operational safety – a decisive advantage for complex hydrogen systems.
The physical properties of hydrogen place special demands on all system components, including the pneumatic control system, which has an indirect effect on the process. Standard solutions quickly reach their limits in explosion-proof areas or with special functional safety requirements. EX or SIL-certified pilot valves in modular valve terminals fulfil the requirements, for example for controlling hydrogen valves or actuators in the process. They guarantee the reliable, regulation-compliant operation of electrolysers, H₂ storage tanks and filling stations, while increasing plant and system availability at the same time.
The choice of valve architecture not only influences safety, but also the space requirements and flexibility of the entire system, whether centralised in the control cabinet or decentralised directly on the application. Valve terminals can either be integrated as a compact unit in the control cabinet or placed in the immediate vicinity of the consumers. Centrally installed solutions are easier to service and protect against environmental influences, while decentralised installations enable shorter cable runs, faster reaction times and more precise zone security. The valve terminal is therefore a crucial link between the control level and the process.
You can gain a more in-depth insight into the benefits of centralised or decentralised control concepts in this blog article.
Hydrogen automation is developing rapidly and those who set the right course today reap the benefits tomorrow. Secure your future with modular valve terminals:
Choosing the right control architecture, whether for new projects or modernising existing systems, is the key to a secure and economical future. Now is the time to lay the foundation for long-term success.