About us

Our founder, Thomas Issler

Self-taught in fluid mechanics, our founder Thomas Issler started working on two-phase technology in 2013 to develop a water-saving device.

In 2017, the Paris Fire Brigade contacted him to work on adapting the Zelup technology to fire hoses. Since then, he has filed several patents. Always looking for new innovations, Thomas is working on a number of projects to improve firefighter safety and save one of our planet’s vital resources: water.


Creation of Zelup

In the beginning, a specialist in environmentally-friendly high-pressure cleaning solutions

Development of a patented process

Two-phase technology: fragmentation of water droplets and very high-speed air flow

The 100% functional Zelup lance

First deliveries of operational vehicles equipped with the two-phase system

“Today, water is at the heart of Zelup’s business, and we are working every day on other applications of two-phase technology” Thomas Issler