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Neles™ Neldisc™ high performance triple eccentric disc valves L1/L2 series

About Neles™ Neldisc™ high performance triple eccentric disc valves L1/L2 series

Neles™ Neldisc™ wafer type L1 and lug type L2 series metal seated, triple eccentric disc valves are specially designed to fulfill the requirements of chemical, petrochemical, refining, and pulp and paper industries in large DN.

Technical Specifications

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Description

Neles™ Neldisc™ wafer type L1 and lug type L2 series metal seated, triple eccentric disc valves are specially designed to fulfill the requirements of chemical, petrochemical, refining, and pulp and paper industries in large DN. With nearly equal percentage characteristics and superior tightness Neldisc™ triple eccentric disc valves operate both in control and shut-off applications.

The Neldisc™ triple eccentric metal seated design, provides extended operational life in tight shut-off, high cycle, high temperature, and abrasive 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 unique S-disc flow treatment option expands application possibilities beyond those of typical butterfly valves.


Specifications
Design
L1 – Wafer type
L2 – Lug type
Size range
DN 700 – 1200 / 28″ – 48″
Pressure classes
ASME 150 – 300, DIN PN 25, 40
Temperature range
-200 °C … +600 °C / -330 °F…+1110 °F
Features
  • L1 wafer type, L2 lug type
  • Tripple offset, 2 piece shaft design
  • One piece, full metal sealing without any resilient parts in pipeline
  • High, long lasting tightness does not rely on differential pressure
  • Unique, industry best disc valve control behavior with patented S-disc feature – possible to mount even on existing valve units
  • Minimized actuator torque. Smaller actuator and lower piping stress
  • Neldisc triple eccentric disc valves operate both in control and shut-off applications
  • Compact and light weight construction with Neles B-series actuator
  • Extended rangeability to 90 degrees control applications
  • Suitable for vacuum service
  • 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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