The company started manufacturing industrial valves in 1949 under the name of Sergot. Through merging and acquisitions, the name became Serseg, Sereg Schlumberger and then SNRI in 1987.

Initially dedicated to the Energy and Industrial markets in France and Europe, SNRI develops, designs, produces and sells a complete range of industrial valves (globe, gate, check and safety valves) for several applications. The range of products are from 2 to 20" with ratings from 150 lbs to 1500 lbs. The material used are cast iron, bronze, carbon and stainless steels, inconel and hastelloy.

Today SNRI focuses on special developments which request high level of engineering skills, such as actuators for severe services, safety devices, mixing valves etc.

ISO 9001 since 1994, SNRI is applying for the ISO 14001 certification.

SNRI is the owner of the intellectual property of the former Malbranque company and now produce these valves at the plant in Ruffec. The Malbranque brand is recognized worldwide for the quality of their gate, globe and check valves, from 2" to 66" in diameters, from 150 to 2500 lbs ratings.

Today, SNRI develops, designs, produces and sells a complete range of industrial valves.

Main markets throughout Europe and worldwide :

  • Cryogenic and LNG industries
  • Energy
  • Engineering
  • Gas and chemical industry
  • Food industry
  • Security
SNRI is located in Ruffec, south west of France, close to Cognac and Bordeaux areas.




General information


Chemin du Treuil
16700 Ruffec


Phone: +33 545 29 60 00
Fax: +33 545 31 1291

Mail: [email protected]