WEH® H2 Check Valves for hydrogen systems
Reliable backflow prevention – for vehicles, refueling stations & systems
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.
Robust stainless steel design
Corrosion-resistant, pressure-tight, and ideal for long-term use under high pressure
High tightness for maximum operational safety
Reliable sealing protects the piping system – even under high pressure and in critical environments
Quiet opening & closing
Optimized internal geometry for quiet operation – ideal for vehicles
Non-return stop in accordance with DIN EN 736-1
Reliable one-way media stop – prevents malfunctions and protects downstream components
Components for fueling stations
Fueling Nozzles
Breakaway Couplings
Filters
Check Valves
Hoses
Components for vehicles
Receptacles
Filters
Check Valves
Components for Hydrogen Trailers
Quick Connectors
Additional components
Fueling System
Service Receptacle
Defueling Nozzles
Accessories
Comprehensive solutions for H2 refueling
Our solutions cover the entire range of products required for refueling—whether in the vehicle or at the refueling station: fueling nozzles, breakaway couplings, receptacles, check valves, hoses, and filters. The portfolio is complemented by innovative quick-adaptation solutions—for example, for the efficient and safe filling of hydrogen storage vessels.
Refueling H2
Fast, safe, and compliant: WEH® H2 components for vehicles and refueling stations ensure smooth operations at the dispenser and in passenger and commercial vehicles.
Filling of H2 tanks
Whether trailers, storage systems, or industrial installations: with WEH® Connectors, hydrogen filling is efficient, leak-tight, and safe—ideal for transport, industry, and logistics.
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