Backflow prevention for H2 vehicles & infrastructure
Where hydrogen must flow in only one direction, WEH® H₂ Check Valves are the right choice. Whether in road vehicles, off-highway applications, or stationary H₂- systems, these high-performance backflow preventers ensure maximum operational safety.
The check valves are designed according to DIN EN 736-1 as backflow preventers for installation in hydrogen pipelines and systems. Due to their high tightness and robust construction, they are ideally suited for both mobile and stationary high-pressure applications – such as in vehicle onboard networks or at hydrogen refueling stations.
Tight, reliable, low-noise
Whether in automotive fuel cell systems or refueling station architecture, WEH® H2 Check Valves impress with durable stainless steel construction, optimally protected sealing systems, and quiet opening and closing behavior – even at high pressures up to 70 MPa. The check valves are available in variants for different connection configurations and can be easily integrated into existing piping systems. This makes them a reliable choice for OEMs, system builders, and operators of H₂ -infrastructure.
Tight, reliable, low-noise
Robust stainless steel design
Corrosion-resistant, pressure-resistant, and ideal for long-term use under high pressure
Quiet opening & closing
Optimized internal geometry for quiet operation – ideal for vehicles
High tightness for maximum operational safety
Reliable sealing protects the piping system – even under high pressure and in critical environments
Non-return stop in accordance with DIN EN 736-1
Reliable one-way media stop – prevents malfunctions and protects downstream components
Overview of the H2 Refueling Components
Additional components:
- Refueling components
- Service receptacle
- Defueling Nozzle
- Accessories
Typical Applications at a Glance
Refueling H2
Fast, safe, and standards-compliant: WEH® H2 Components for vehicles and refueling stations ensure smooth operations at the dispenser and in road and commercial vehicles.
Filling of H2 tanks
Whether trailer, storage, or systems: With WEH® Connectors, hydrogen filling is efficient, pressure-tight, and safe – ideal for transport, industry, and logistics.
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