H2-Check Valve (Medium Pressure)
Wherever a medium needs to flow in just one direction within a pipeline system and return flow needs to be prevented,
WEH® H2-check valves fulfi l this function with absolute reliability.
WEH® H2-check valves have been specifi cally developed and tested for hydrogen applications.
The housings are made of special 316/316L alloys with controlled nickel, chromium, and molybdenum content. This signifi -
cantly reduces the risk of hydrogen embrittlement, thereby ensuring a longer service life.
| Technical Nominal Size | 5.5 mm |
|---|---|
| Max. allowable operating pressure PS | PS = 1,034 bar (15,000 psi) |
| Pressure Range (PS) | PS = 1,034 bar (15,000 psi) |
| Temperature Range | -40 °C up to +85 °C |
| Medium | Hydrogen |
| Material | Stainless steel |
| Sealing Material | Hydrogen resistant |
| Connection geometry | Medium pressure fitting 60° Cone & Thread |
- High flow rate thanks to large technical nominal sizes
- Special version for hydrogen-applications
- Delivery includes pre-assembled pressure rings and pressure screws
Typical applications include hydrogen storage systems, compressor systems, and dispensers, as well as testing systems for
hydrogen components.
Separate models are available for hydraulic applications or those involving other gases. Please feel free to contact us!

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