For hydrogen suppliers, trailer operators, filling facilities and H₂ infrastructure projects.
Filling H2 tanks – securing supply. Streamlining processes.
Quick connection solutions for filling and unloading H₂ trailers, storage vessels and hydrogen supply systems.
Tool-free connection, high flow rates and reliable operation at pressures up to 530 bar.
Safely filling H2 tanks – how modern connection technology is changing the process
Whether in hydrogen distribution centers, production facilities, or mobile supply units, the filling and withdrawal of hydrogen are among the core processes along the H2 infrastructure—for example, to supply refueling stations, serve as intermediate buffers, or support applications in electrolysis and reforming plants.
In practice, these processes often involve frequently changing tube trailers, different connection variants, and demanding operating conditions. This is where connection technology becomes critical to efficiency and safety: complex screw-type connection procedures increase training requirements, introduce the risk of errors—and cost valuable time in daily operations.
WEH supports these processes with compact quick connectors that enable tool-free, defined, and leak-tight connections—delivering greater safety and significantly more efficient workflows when filling and withdrawing hydrogen.
What H2 filling processes need to achieve in real-world applications
Depending on the infrastructure, details vary – but the core requirements remain the same:
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Maximum safety and leak-tight performance under high pressure
Filling and withdrawal processes must remain controlled, reliable, and leak-free at all times—even in daily operation.
Clear operation & repeatable workflows
The connection must be clearly defined and repeatable in order to minimize operating errors and reliably standardize processes.
High flow rates for efficient filling times
High flow performance is essential to ensure cost-effective filling processes without unnecessary downtime.
Flexibility with changing trailers & connection variants
In practice, different connection geometries and systems are frequently encountered—the connection must be designed to accommodate them.
Quick connection instead of screwing
Connecting and disconnecting in the shortest possible time—tool-free and without manual screwing. This saves time and reduces downtime.
High flow rates for efficient filling
Large, continuous nominal bores enable high flow performance—ideal for fast filling processes, even with large vessels.
Greater process reliability in daily operation
A defined locking mechanism reduces the risk of operating errors.
Robust for demanding conditions
Durable design for frequent coupling and use in both mobile and stationary applications.
Secure against unintentional disconnection
Integrated safety mechanisms ensure a reliable connection—even in the demanding environment of H2 logistics.
Compatible & adaptable
Suitable for typical trailer connections and flexible for use with different connection variants.
Learn more about WEH® Quick Connectors for filling hydrogen vessels (e.g., H2 trailers)
Plug & Fill – solutions for pressures up to 530 bar
Where H2 filling is used – typical applications and fields of use
The filling and withdrawal of tube trailers and hydrogen vessels are required wherever hydrogen is transported, distributed, or temporarily stored—both in stationary and mobile applications.
Typical applications:
- Hydrogen distribution centers
- Production facilities (power-to-gas, electrolysis, steam reforming)
- H2 hubs operated by companies and energy utilities (e.g., municipal utilities, pipelines)
- Buffer storage systems and supply units for refueling stations
- Mobile refueling stations and mobile supply units
- Test fields and pilot plants
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