Onis supports an expansive global customer base with the design and manufacture of equipment used to isolate process piping.

About our company

Since 1979, providing customers innovative solutions for blinding process piping with better, faster, and safer equipment !


In 1979 our company was founded by Edmond Onis who invented our first quick-action line blind for a petrochemical company in Berre l’Etang, France. The invention was extremely successful as it enabled operators to isolate equipment more safely and within a small fraction of the time compared to conventional blinding equipment. For more than 40 years, ONIS has been innovating on these types of products to deliver customized solutions to more than 450 plants worldwide.


Our company strategy is customer centric where we lean in to build strong and sustainable partnerships with our end users over time. Onis is focused on the relentless use of customer feedback to constantly improve our service and product offerings. We have a strong technical organization that continuously innovates on our products and services to provide more environmentally friendly, safe, and efficient solutions that result in high project payback to our customers.

Certificates & Approvals

ONIS Quality system according to ISO 9001-2015 certified by SGS ONIS Quality system according to PED 2014/068/EU Certified by SGS TUV SAAR ONIS certified according to TR CU 32.


Our values are our keys of success


Committed to our customers, partners and suppliers, we are devoted to creating a sustainable relationship with each of them.


Focused on providing safe, cost-effective solutions to improve responsiveness and efficiency while also being better for the environment.


Continuously innovating to guarantee our customers and partners the best combination of safety, efficiency and return on investment.

Customer satisfaction

We are dedicated to the relentless pursuit of customer satisfaction. Our goal is to understand and exceed customer expectations.

Quick, Reliable, Effective
products designed to
protect people and
environment !

Onis quick action piping solutions are engineered and customized for critical process applications.

Applications for quick blinding solutions include the following:

  • Blind or de-blind a pipe in order to perform maintenance on equipment such as pumps, compressors, furnaces, filters.
  • Segregate two or more fluids / media,
  • Guarantee no leak after an isolation valve,
  • Change quickly a filter in order to recover an optimized process conditions
  • Change quickly a rupture disc after activation due to over pressured ofpressure equipment
  • Replace or introduce in a pipe any specific device as flame arrestor, scrappers …

Our references