The Reflux 819/FO H is a pilot-operated gas pressure regulator designed and manufactured by Pietro Fiorentini, specifically tailored for 100% hydrogen applications. It is classified as Fail Open according to the European Standard EN 334, ensuring safe operation in critical systems. This regulator is suitable for high-pressure transmission systems, power plants, and medium pressure gas distribution networks. It offers high accuracy, a compact and simple design, easy maintenance, and built-in accessories. The device is certified under European Directive 2014/68/EU (PED) and DVGW, and it is a true Fail Open plug and seat regulator, making it ideal for hydrogen applications with reliable performance and safety.
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