Vallourec, a world leader in premium seamless tubular solutions, announces the official qualification of Delphy, its vertical gaseous hydrogen storage solution, by DNV. A world first, Delphy enables the storage of 1 to 100 tons of hydrogen under maximum safety conditions.

Thanks to its minimal footprint, this vertical system – extending up to 100 meters underground – meets the challenge of complex and demanding industrial environments. It targets both green hydrogen producers and industrial players such as synthetic fuel producers (e-SAF, e-methanol), green ammonia producers, steelmakers, and refineries. The Delphy solution is the result of Vallourec’s longstanding expertise and know-how and is based on proven technologies – tubes and connections – that have demonstrated excellent tightness and corrosion resistance.