DIN EN 14972-1:2021-06 Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection and maintenance; German version EN 14972-1:2020
2021DIN EN 14972-1:2021 Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection and maintenance; German version EN 14972-1:2020
2019DIN EN 14972-1:2019 Fixed firefighting systems - Water mist systems - Part 1: Design, installation, inspection and maintenance; German and English version prEN 14972-1:2019