Zelup, the diphasic revolution. A patented process, solutions to save our planet's resources 🌍 Zelup, a French start-up founded in 2012, launches the two-phase revolution! Innovation and respect for the environment are the key factors in the development of the solutions manufactured by Zelup. They propel Zelup and its customers into the technologies of the future while preserving the planet and its water resources. It all started with high-pressure cleaning guns, based on a new technology developed and patented by Zelup; hydropneumatic fragmentation. This discovery interested the Paris fire brigade (BSPP), and after years of research and development, the two-phase …