Flowzone Engineering Solution

Neles™ butterfly valve, series L6

The Neles Neldisc L6 series valve with a triple eccentric disc is capable of operating in both control and shut-off applications. This valve delivers nearly proportional flow characteristics and exceptional sealing capability.

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  • Pressure loss and energy costs of the process are minimized
  • The valves have the best capacity in the industry
  • They deliver consistent performance, even under the most challenging and varying process conditions
  • Maintenance hours are kept to a minimum, allowing for quick and efficient upkeep


  • The valves have a triple offset design
  • They feature a driveshaft with either a trunnion or through shaft (only for Model D)
  • True metal-to-metal sealing ensures zero leakage
  • The valves use a one-piece, full metal sealing system without any resilient parts in the pipeline
  • High and long-lasting tightness is guaranteed
  • The patented S-disc feature delivers unique, industry-leading valve control and can be mounted on existing valve units
  • The modular design of the valves minimizes the inventory of spare parts, as the same spares can be used across multiple Neles Neldisc designs
  • The minimized actuator torque allows for a smaller actuator and reduced piping stress
  • BAM certification is available for gaseous oxygen as an option
  • The valves are suitable for use in dirty and abrasive services
  • They have an extended rangeability of up to 90 degrees for control applications
  • The valves feature built-in thermal and pressure compensation
  • The spare part inventory is optimized



L6 (Model D)
Double flanged
Double flanged
Size range
DN 80 – 300 / 3″ – 12″ (excluding DN 125/5″)
DN 100 – 2200 / 4″ – 88″
Pressure classes
ASME 150 – 300 / PN 10 – 40
ASME 150 – 600 / PN 10 – 40
Temperature range
-50 °C … +600 °C / -46 °F … +1110 °F
-200 °C … +600 °C / -330 °F … +1110 °F


  • Technical bulletins
  • Installation, maintenance and operation manuals
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