
Sirius project completed: green hydrogen electrolyser validated at industrial scale with record purity
Hyter and its partners validated an AEMWE electrolyser up to 1 MW in an industrial environment, achieving hydrogen purity up to 99.999%.

The Mod. FE H is a direct-operated gas pressure regulator designed and manufactured by Pietro Fiorentini. This device is suitable for 100% hydrogen applications.
It is used for low pressure gas distribution networks, as well as residential and commercial applications.
The FE H regulator is classified as Fail Close (only version with slam-shut device valve for downstream overpressure).
Click here to see the product page in the NG version / NG-H2 blending (up to 20%) version.

Hyter and its partners validated an AEMWE electrolyser up to 1 MW in an industrial environment, achieving hydrogen purity up to 99.999%.
Pietro Fiorentini, Athena, 2RZ, the Department of Chemical Sciences of the University of Padua and UniSMART Foundation have joined forces in the Veneto Region-funded LEONE project — LEan Optimisation of Novel Electrolysers. Over 30 months, the partners will work to simplify electrolyser manufacturing, improve reliability and reduce dependence on critical and costly materials. The project […]
2025 was marked by evolving geopolitical dynamics and shifting international balances. In this complex scenario, the solidity of the Pietro Fiorentini Group ensured the continuity needed to face challenges and seize opportunities responsibly and with a long-term vision. Built on this resilience and the Group’s new governance structure, the 2025 Sustainability Report is titled “Many […]