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Neles™ Neldisc™ high performance triple eccentric disc valves LW/LG series

About Neles™ Neldisc™ high performance triple eccentric disc valves LW/LG series

Neles™ Neldisc™ LW/LG metal seated, triple eccentric disc valves are specially designed to fulfill the requirements of chemical, petrochemical, refining and pulp and paper industries.

Technical Specifications

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Description

Neles™ Neldisc™ wafer type LW and lug type LG series metal seated, triple eccentric disc valves are specially designed to fulfill the requirements of chemical, petrochemical, refining and pulp and paper industries. With nearly equal percentage characteristics and superior tightness Neldisc™ triple eccentric disc valves operate both in control and shut-off applications.

As a result of the unique triple eccentric geometry Neldisc™, the contact between disc and seat is mechanically induced and does not rely on assistance from differential pressure. The Neldisc™ triple eccentric metal seated design, provides extended operational life in tight shut-off, high cycle, high temperature, and abrasive applications.

The unique S-disc flow treatment option expands application possibilities beyond those of typical butterfly valves.


Specifications
Series
LW & LG (Model D)
LW & LG
Design
Wafer or lug
Wafer or lug
Size range
DN 80 – 300 / 3″ – 12″ (excluding DN 125/5″)
DN 80 – 600 / 3″ – 24″
Pressure classes
ASME 150 – 300, PN 10 – 40
ASME 150 – 300, PN 10 – 40
Temperature range
-50 °C … +600 °C / -46 °F…+1110 °F
-200 °C … +600 °C / -330 °F…+1110 °F
Features
  • 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
  • Optimized spare part inventory
  • 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
  • Built-in thermal and pressure compensation
  • Extended rangeability to 90 degrees control applications
  • Suitable to dirty and abrasive services
  • Industries:
    • Biotechnology
    • Geothermal applications
    • Pulp and paper
    • Water and wastewater
    • Refining
    • Oil and gas
    • Petrochemicals
    • ESD service
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