NSEN was founded in 1983, specializing in the field of eccentric butterfly valves. After years of exploration and practice, the existing product series below has been formed:

• Triple eccentric butterfly valve
• High performance butterfly valve
• Metal to metal butterfly valve
• -196℃Cryogenic butterfly valve
• High temperature fire protection butterfly valve
• Damper butterfly valve
• Seawater resistant butterfly valve

In the professional field, focus on butterfly valves. NSEN is also constantly improving its own qualifications and proving its strength.

• System Certification

CE (PED)

ISO 9001

ISO 14001

ISO 45001

• Fire Proof Certification

API 607

• Low Emission Certification

API 641

ISO 15848-1

TA-LUFT

• Russian Certification

TR CU 010 / 032  

• TPI Test certification

Cryogenic -196 Butterfly Valve Test Report

Neutral Salt Spray (NSS) Test Report

Intergranular Corrosion (IGC) Test Report