Rotarex has a new safety lock down mechanism feature on UHP line valves
Enhanced operational safety with advanced LOTO locking mechanism

Lintgen, Luxembourg 10 June 2020——Rotarex SA is proud to introduce a new locking feature for its M4SI and M8SI UHP line valves.

As ultra-high purity gases can be corrosive, flammable or toxic, good operational safety is essential. Our new LOTO (lock out, tag out) locking system provides all the security you could need for a wide range of UHP applications. The new locking feature requires a deliberate pull and twist motion to switch position, ensuring the valve cannot be opened accidentally if, for example, the equipment has been shut down for repairs.

For additional security, a lockout hasp can also be used in both open and closed positions. The locking mechanism itself is fully integrated into the valve; it requires no separate parts and takes up no additional space. You can count on Rotarex UHP equipment to maintain the purity of your gas. Like all our UHP range, the valves are assembled, tested and packaged entirely in ISO4 cleanroom conditions and can be electropolished according SEMI and customer specifications.

LOTO is currently available as a built-in feature for new orders of our M4SI and M8SI UHP valves only, not as a retrofit option for old models. You can find out more about the LOTO feature here. These products, as well as the rest of our UHP product line, can be found in our product catalog.

About Rotarex
Rotarex designs and manufactures the widest range of high-quality gas control products that deliver peak performance, giving sellers, users or installers of gas equipment confidence that their projects will achieve better success. With ISO certified manufacturing standards and unmatched source through production quality control, Rotarex products perform better, require less maintenance and have a longer life.


Today’s Rotarex is the gas control industry’s innovation leader. When companies worldwide need products that enable new technologies and systems, they turn to us. And it’s been that way since our first Ceodeux valves won innovation awards in the 1920’s, propelling us into the top tier of cylinder valve manufacturers. We’ve never stopped inventing, designing, prototyping and manufacturing first-of-a-kind products that solve industry challenges and invent new, safer ways of working.


  • Rapid response R&D infrastructure
  • Applied innovations such as the integrated valve
  • Breadth of technology across regions worldwide
  • Crossover solutions from one application to another

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