Mechanical Line Blinds
Quick and safe blinding operations
ONIS Line Blind Systems are used to isolate reactors, heaters, pumps, compressors, furnaces etc. in upstream- and downstream processes. Manufactured in the south of France, they provide 100% positive isolation.

The ONIS Quick-Action line blind can be easily operated by just one person (less than 30 seconds for sizes 1” through 10” and in a few minutes for sizes 12” through 50”).

Since 1979, over 12.000 Onis quick-acting line blinds are installed in more than 60 countries worldwide. Each Onis line blind is custom built to suit your specific process and outperforms conventional figure-8, spectacle & slip blinds.
Devices can be supplied in a variety of materials for a wide range of temperatures, pressures and products. Fire safe design with graphite gaskets is also available.
A quick return-on-investment helps you to reduce your operating costs.