Introducing Metso's Neles Series L6 Triple Eccentric Disc Valve for Both Control and Tight Shut-Off Applications

Metso's Neles series L6 is a double flanged metal seated Neldisc® triple eccentric disc valve with one piece body design, for both control and tight shut-off applications. It is particularly well suited
for the refining, power, petrochemical and chemical industries.

The L6 incorporates the Neldisc® triple offset metal seated design, which provides extended operational life in control, tight shut-off, high cycle, high temperature and abrasive applications. S-disc flow construction expands application possibilities beyond those of typical butterfly valves. Full rating from ASME 150 to 600 makes the L6 a sound control or shut-off valve and an ideal replacement for gate valves.

Excellent on-off capabilities
  • Uniquely functioning full metal seat design assures tightness over long time periods.
  • Contact between disc and seat is mechanically induced and does not rely on assistance from differential pressure.
  • Bi-directional long term tightness is maintained even in high cycle rate services. Unidirectional in ASME Class 600. Tightness in not compromised by large thermal cycling either.
  • Low friction and excellent wear resistance.
  • Lowered operational torque reduces actuator size
  • Heavy-duty stem and bearings arrangement extends service life and is insensitive to thermal cycles and impurities.
Excellent Flow Control Capabilities
  • Good controllability via smoothly rising installed characteristic curve at both very small openings and nearly full Cv positions. L6 provides very wide rangeability in fairly low pressure drop services.
  • Good dynamic stability in both flow directions.
  • S-disc design provides dynamic torque balancing and noise abatement, allowing L6 valve use in applications where high performance butterflies could not typically be considered. This offers very cost effective control solutions.
  • Available with a variety of actuators, positioners and accessories for single source responsibility.
AbrasionResistant
  • Solid, sturdy all metal seat design is based on metal-to-metal contact. No resilient parts are needed for seating. Furthermore, there are no resilient parts exposed to the medium.
Wide Pressure and Temperature Range
  • Differential pressure/temperature ratings in accordance with ASME B16.34.
  • Standard construction performs equally well from -200 ...+600 °C / -328 ...+1110 °F.
Low Cost of Ownership
  • Extremely high cycle life minimizes the need for maintenance, and increases Mean Time Between Failure (MTBF).
  • Interchangeable seat can be replaced without disassembling the disc and shaft. Seat replacement does not require any adjustment or special tools. Seat design is exactly the same in ASME class 150 and 300 regardless of pressure rating.
Specification
specification














 

Download the Neles Series L6 Data Sheet


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