Neles™ butterfly valve, series LW and LG

Neldisc™ high performance triple eccentric disc valves

Neles™ butterfly valve, series LW and LG

Neles Neldisc series LW and LG triple eccentric disc valves operate both in control and shut-off applications, with close to equal percentage characteristics and superior tightness.


Minimized pressure loss and energy costs of the process

Industry best valve capacity

Consistent performance even in the most difficult, changing process conditions

Shortest possible maintenance hours


  • LW wafer type, LG lug type
  • Triple offset
  • Driveshaft with trunnion or through shaft (Model D only)
  • Zero leakage with true metal-to-metal sealing
  • One piece, full metal sealing without any resilient parts in the pipeline
  • High, long-lasting tightness
  • Unique, industry best disc valve control behavior with patented S-disc feature – possible to mount even on existing valve units
  • Modular design minimizes the spare part inventory – the same spares can be used in multiple Neles Neldisc designs
  • Minimized actuator torque. Smaller actuator and lower piping stress
  • BAM certified construction for gaseous oxygen as an option
  • In-built thermal  and pressure compensation  
  • Extended rangeability to 90 degrees control applications
  • Optimized spare part inventory
  • Suitable to dirty and abrasive services


  • Biotechnology
  • Geothermal applications
  • Pulp and paper
  • Water and wastewater
  • Refining
  • Oil and gas
  • Petrochemicals
  • ESD service
  • Industrial gas
  • Power generation
  • Food and beverages


Versatile butterfly valves

The new generation of Neldisc™ metal-seated and Wafer-Sphere™ soft-seated butterfly valves is built to deliver sustainable performance today and tomorrow.

Neles™ Q-Disc™ flow balancing trim

New, patent pending Q-Disc design features extreme flow balancing for control service. Dynamic torque effect from the flow has been significantly reduced allowing high pressure drop service. Design also provides market leading noise reduction even up to 12 dB. Read more


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