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NSEN Valve
Only Producing High Quality Butterfly Valves

Precision-engineered butterfly valves for industrial applications worldwide. Compliant with API, ASME, and EN standards.

Explore Our Valves

About NSEN Valve

NSEN Valve is a leading manufacturer specializing in high-performance butterfly valves designed for demanding industrial environments. With a strong commitment to innovation and quality, we serve global markets in oil & gas, water treatment, power generation, and chemical processing.

Our valves are engineered to meet international standards including API 609, ASME B16.34, and EN 593, ensuring reliability, durability, and safety under extreme conditions.

20+
Years Experience
3600+
DN Max Size
Class 1500
Max Pressure
NSEN Valve Manufacturing Facility

Our Butterfly Valves

Engineered for performance, durability, and compliance. All models available in sizes from DN50 to DN3600 (2” to 144”) and pressure ratings up to Class 1500.

Triple Offset Metal Seated Butterfly Valve

Triple Offset Metal Seated Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
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Electric Flange Metal-seated Butterfly Valve

Electric Flange Metal-seated Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details
Pneumatic Vacuum Butterfly Valve

Pneumatic Vacuum Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details
Double Flange Triple Offset Metal Butterfly Valve

Double Flange Triple Offset Metal Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details
Flange Type Triple Offset Electric Butterfly Valve

Flange Type Triple Offset Electric Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details
Wafer Type Triple Offset Butterfly Valve

Wafer Type Triple Offset Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details

Wafer Metal Seated Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details

Seawater Resistant Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details

Metal To Metal Seat Bi-directional Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details

Metal Seat Bi-directional Butterfly Valve

  • Model: NSBV
  • Standard: ASME B16.34
  • Size: 2"–144"
  • Pressure: 150LB–1500LB
View Details

Large Diameter Metal Seated Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details

General Purpose Butterfly Valve

  • Model: NSEN Valve
  • Standard: API 609, EN 593, ASME B16.34
  • Size: DN50–DN3600 (2”–144”)
  • Pressure: PN2.5–PN260 (Class150–1500)
View Details

Quality Assurance

We ensure every valve meets the highest standards of performance and safety.

Certifications

EAC certified. Compliant with API, ASME, and EN standards. Participated in drafting Chinese national standards.

Manufacturing

State-of-the-art production equipment and strict manufacturing procedures ensure consistency and precision.

Testing

Advanced test equipment for pressure, leakage, and performance validation before shipment.

Support & Services

After-Sales Service

Comprehensive support including installation guidance, maintenance, and troubleshooting assistance.

Online Tech Support

Expert technical team available online to answer your engineering and application questions.

Third-Party Inspection

We welcome and support third-party inspections to ensure full compliance and transparency.

Company News

NSEN Valve certified by EAC

Achieved EAC certification, expanding market access in Eurasian economic regions.

NSEN New Factory, New Beginning

On January 17, 2020, NSEN moved to a new facility in Wuniu Street Lingxia Industrial Zone.

Congratulate NSEN VALVE Drafting National Standard

Proud to have contributed to drafting the Chinese national standard for bi-directional metal-to-metal seated butterfly valves.

Successful Exhibition in Russia

Thank you for visiting NSEN at PCVEXPO Moscow, October 22–24, 2019.

Valve World Expo Participation

We appreciate your visit to our booth at Valve World Expo. Your engagement drives our innovation.

Get in Touch

For product inquiries, technical support, or partnership opportunities, visit our official website.

Visit Official Website
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