Jul 03, 2026
From Manual Filling to Automatic Safety: The Story Behind the OPD Valve
In 1922, A.T. Schmitz founded the company that has become Rotarex. In the decades since then, under the guidance of several generations of the Schmitz family, Rotarex has grown steadily and is now a world leader in gas control products, systems and solutions. We’ve accomplished this thanks to...
We invite you to scroll through our history timeline to see the events, breakthroughs and expansion that have shaped today’s Rotarex.
Willi Rackow invented the original Quick coupling connection system for cylinder valves and regulators which he patented in 1934.