Metso Neles Triple Eccentric Disc Valve, Series L12
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Neles Series L12 Triple Eccentric Disc Valve

Brand: Valmet
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Metso's Neles Neldisc series L12 a wafer type, metal seated high performance triple eccentric disc valve.

With close to 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 geometry of Neldisc, the contact between disc and seat is mechanically induced and does not rely on assistance from differential pressure.

The valve is very tight even in low Differential pressure applications.

Due to a number of special constructions developed from the versatile Neldisc design, these valves offer a powerful tool for standardization and are true high performance valves.

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Specifications

Brand

Actuator Type

  • Gear Operator
  • Handle Lever
  • Pneumatic

Applications

  • Gases
  • Liquids
  • Pulp & Paper Applications
  • Pulp Stocks Both on Control & Shutoff Services
  • Steam

Approvals & Certifications

  • API 609 Low Pressure, High Pressure
  • BS 5155
  • ISO 5752
  • TÜV (Technischer Uberwachungsverein)

Bearing Material

  • Carbon-Filled PTFE Reinforced

Differential Pressure

  • Trim - psi: 87 to 363 (kPa: 600 to 2,500, bar: 6 to 25) - Max.

Disc Material

  • AISI 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Stainless Steel

Enclosure, Body Details

  • Wafer

Enclosure, Body Material

  • AISI 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Stainless Steel

Flange Material

  • Blind: Stainless Steel

Flange Size - 10” (DN 250)

  • 10” (DN 250) - 150# ASME
  • 10” (DN 250) - JIS 10K
  • 10” (DN 250) - PN 10
  • 10” (DN 250) - PN 16
  • 10” (DN 250) - PN 25

Flange Size - 12” (DN 300)

  • 12” (DN 300) - 150# ASME
  • 12” (DN 300) - JIS 10K
  • 12” (DN 300) - PN 10
  • 12” (DN 300) - PN 16
  • 12” (DN 300) - PN 25

Flange Size - 14” (DN 350)

  • 14” (DN 350) - 150# ASME
  • 14” (DN 350) - JIS 10K
  • 14” (DN 350) - PN 10
  • 14” (DN 350) - PN 16
  • 14” (DN 350) - PN 25

Flange Size - 16” (DN 400)

  • 16” (DN 400) - 150# ASME
  • 16” (DN 400) - JIS 10K
  • 16” (DN 400) - PN 10
  • 16” (DN 400) - PN 16
  • 16” (DN 400) - PN 25

Flange Size - 20” (DN 500)

  • 20” (DN 500) - 150# ASME
  • 20” (DN 500) - JIS 10K
  • 20” (DN 500) - PN 10
  • 20” (DN 500) - PN 16
  • 20” (DN 500) - PN 25

Flange Size - 24” (DN 600)

  • 24” (DN 600) - 150# ASME
  • 24” (DN 600) - JIS 10K
  • 24” (DN 600) - PN 10
  • 24” (DN 600) - PN 16
  • 24” (DN 600) - PN 25

Flange Size - 28” (DN 700)

  • 28” (DN 700) - 150# ASME
  • 28” (DN 700) - JIS 10K
  • 28” (DN 700) - PN 10
  • 28” (DN 700) - PN 16
  • 28” (DN 700) - PN 25

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 300# ASME
  • 3” (DN 80) - JIS 10K
  • 3” (DN 80) - PN 10
  • 3” (DN 80) - PN 16
  • 3” (DN 80) - PN 50

Flange Size - 32” (DN 800)

  • 32” (DN 800) - 150# ASME
  • 32” (DN 800) - JIS 10K
  • 32” (DN 800) - PN 10
  • 32” (DN 800) - PN 16
  • 32” (DN 800) - PN 25

Flange Size - 36” (DN 900)

  • 36” (DN 900) - 150# ASME
  • 36” (DN 900) - JIS 10K
  • 36” (DN 900) - PN 10
  • 36” (DN 900) - PN 16
  • 36” (DN 900) - PN 25

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 300# ASME
  • 4” (DN 100) - JIS 10K
  • 4” (DN 100) - PN 10
  • 4” (DN 100) - PN 16
  • 4” (DN 100) - PN 50

Flange Size - 40” (DN 1000)

  • 40” (DN 1000) - 150# ASME
  • 40” (DN 1000) - JIS 10K
  • 40” (DN 1000) - PN 10
  • 40” (DN 1000) - PN 16
  • 40” (DN 1000) - PN 25

Flange Size - 48” (DN 1200)

  • 48” (DN 1200) - 150# ASME
  • 48” (DN 1200) - JIS 10K
  • 48” (DN 1200) - PN 10
  • 48” (DN 1200) - PN 16
  • 48” (DN 1200) - PN 25

Flange Size - 5” (DN 125)

  • 5” (DN 125) - 300# ASME
  • 5” (DN 125) - JIS 10K
  • 5” (DN 125) - PN 10
  • 5” (DN 125) - PN 16
  • 5” (DN 125) - PN 50

Flange Size - 56” (DN 1400)

  • 56” (DN 1400) - 150# ASME
  • 56” (DN 1400) - JIS 10K
  • 56” (DN 1400) - PN 10
  • 56” (DN 1400) - PN 16
  • 56” (DN 1400) - PN 25

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150# ASME
  • 6” (DN 150) - JIS 10K
  • 6” (DN 150) - PN 10
  • 6” (DN 150) - PN 16
  • 6” (DN 150) - PN 25

Flange Size - 8” (DN 200)

  • 8” (DN 200) - 150# ASME
  • 8” (DN 200) - JIS 10K
  • 8” (DN 200) - PN 10
  • 8” (DN 200) - PN 16
  • 8” (DN 200) - PN 25

Flow Rate

  • 245 to 177,000 Cv at Cv 90°

Gasket Material

  • Graphite

Gland Material

  • Stainless Steel

Gland Packing Material

  • Graphite
  • PTFE (V-Ring Set)

Materials of Construction

  • Key, Pin, Stud, Retaining Plate, Net: Stainless Steel
  • Pin, Key: AISI 329 Stainless Steel (SS 14 2324)
  • V-Ring Set: Polytetrafluoroethylene (PTFE)

Media

  • Gas
  • Liquids
  • Steam
  • Water

Name Plate, Tag Material

  • Stainless Steel

NPT Connection

  • 1” NPT
  • 1/2” NPT
  • 1/4” NPT
  • 3/4” NPT
  • 3/8” NPT

Nut & Bolt Material

  • Hexagon Nut: Stainless Steel

Port

  • Full

Proof Pressure

  • Seat Test: 1.1 times Nominal Pressure
  • Shell Test: 1.5 times Nominal Pressure

Ring Material

  • Clamp, Seat: Stainless Steel
  • Seat: Hard Chrome
  • Seat: Ni-Fe-Base Super Alloy

Screw Material

  • Hexagon Screw, Hexagon Socket Screw: Stainless Steel

Seat / Seal Material

  • Body Seal: Graphite
  • Seat: Incoloy 825
  • Seat: Stainless Steel (ASTM B 424)

Shaft Material

  • AISI 329 Stainless Steel (SS 14 2324)
  • Drive: Stainless Steel

Spring Material

  • Disc Spring Stack: Electroless Nickel-Plated Spring Steel (EN 10083 to 1.8159)

Temperature Range

  • -40° to 260° C (-40° to 500° F)

  • Liquids
  • Gases
  • Steam
  • Pulpstocks both on control and shutoff services

Documentation

Data Sheets

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