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Instantly add the Neles Series LW & LG Butterfly Valve and 50,000+ more product series to your store or catalog  
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Metso Neles Butterfly Valve, Series LW & LG

Neles Series LW & LG Butterfly Valve

Brand: Valmet
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Neldisc wafer type LW and lug type LG series are metal seated, high performance butterfly valves specially designed to fulfill the requirements of chemical, petrochemical, refining and pulp and paper industries. 

With a nearly equal percentage characteristics and superior tightness Neldisc butterfly valves operate both in control and shut-off applications. 

As a result of the unique triple offset geometry of Neldisc, the contact between disc and seat is mechanically induced and does not rely on assistance from differential pressure. 

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

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Specifications

Brand

Actuator Type

  • Gear Operator
  • Hand Lever
  • Pneumatic
  • Spring Return

Applications

  • ATEX
  • Chemical
  • Petrochemical
  • Pulp & Paper
  • Refining
  • Shut Off Applications

Approvals & Certifications

  • API 598
  • API 607, 6th Edition
  • API 609, Category B
  • Fire Safe: BS 6755
  • ISO 15848

Bearing Material

  • AISI 316 Stainless Steel
  • Cobalt-based Alloy
  • PTFE

Disc Material

  • 316 Stainless Steel - ASTM A182, F316

Enclosure Finish

  • Hard Chrome Coated

Enclosure, Body Details

  • Lug
  • Wafer

Enclosure, Body Material

  • 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Carbon Steel (ASTM A216 Grade WCB)

Flange Material

  • Blind: 316 Stainless Steel - ASTM A351 CF8M, 1.4408

Flange Size - 10” (DN 250)

  • 10” (DN 250) - 150# ASME
  • 10” (DN 250) - 300# ASME

Flange Size - 12” (DN 300)

  • 12” (DN 300) - 150# ASME
  • 12” (DN 300) - 300# ASME

Flange Size - 14” (DN 350)

  • 14” (DN 350) - 150# ASME
  • 14” (DN 350) - 300# ASME

Flange Size - 16” (DN 400)

  • 16” (DN 400) - 150# ASME
  • 16” (DN 400) - 300# ASME

Flange Size - 18” (DN 450)

  • 18” (DN 450) - 150# ASME
  • 18” (DN 450) - 300# ASME

Flange Size - 20” (DN 500)

  • 20” (DN 500) - 150# ASME
  • 20” (DN 500) - 300# ASME

Flange Size - 24” (DN 600)

  • 24” (DN 600) - 150# ASME
  • 24” (DN 600) - 300# ASME

Flange Size - 28” (DN 700)

  • 28” (DN 700) - 150# ASME
  • 28” (DN 700) - 300# ASME

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150# ASME
  • 3” (DN 80) - 300# ASME

Flange Size - 30” (DN 750)

  • 30” (DN 750) - 150# ASME
  • 30” (DN 750) - 300# ASME

Flange Size - 32” (DN 800)

  • 32” (DN 800) - 150# ASME
  • 32” (DN 800) - 300# ASME

Flange Size - 36” (DN 900)

  • 36” (DN 900) - 150# ASME
  • 36” (DN 900) - 300# ASME

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150# ASME
  • 4” (DN 100) - 300# ASME

Flange Size - 40” (DN 1000)

  • 40” (DN 1000) - 150# ASME
  • 40” (DN 1000) - 300# ASME

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150# ASME
  • 6” (DN 150) - 300# ASME

Flange Size - 8” (DN 200)

  • 8” (DN 200) - 150# ASME
  • 8” (DN 200) - 300# ASME

Flow Rate

  • 235 to 10,498 Cv at Cv 80° - LW5D, LG5D (ASME Class 300) Model
  • 235 to 22,141 Cv at Cv 80° - LW5C, LG5C (ASME Class 150) Model
  • 245 to 12,100 Cv at Cv 90° - LW5D, LG5D (ASME Class 300) Model
  • 245 to 31,000 Cv at Cv 90° - LW5C, LG5C (ASME Class 150) Model

Gasket Material

  • Blind Flange: Graphite

Gland Material

  • 316 Stainless Steel - ASTM A351 CF8M, 1.4408

Gland Packing Material

  • Graphite
  • PTFE (V-Ring)

Materials of Construction

  • Key: 329 Stainless Steel
  • Pin: 630 Stainless Steel (17-4 PH)
  • Stud, Retaining Plate, Pin: Stainless Steel (A4-70 / DIN 267, XM-19)

NACE & NIST

  • NACE MR-0103
  • NACE MR-0175

Name Plate, Tag Material

  • AISI 304 Stainless Steel

NPT Connection

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

Nut & Bolt Material

  • Hexagon Nut: Stainless Steel (A4-70 / DIN 267)

Operating Pressure

  • psi: 421.9 to 719.2 (kPa: 2,909 to 4,959, bar: 29.09 to 49.59) - Max.
  • psi: 500.2 to 740.9 (kPa: 3,449 to 5,108, bar: 34.49 to 51.08) - Max.
  • psi: 94.2 to 275.5 (kPa: 649.5 to 1,900, bar: 6.49 to 19) - Max.
  • psi: 94.2 to 284.2 (kPa: 649.5 to 1,959, bar: 6.49 to 19.59) - Max.

Packing Material

  • Graphite
  • PTFE (V-Ring)

Ring Material

  • Anti-Extrusion: Graphite
  • Clamp, Anti-Extrusion: 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Seat: Hard Chrome Coated Incoloy 825

Screw Material

  • Hex Socket Head Cap: Stainless Steel (A4-70 / DIN 267)

Seat / Seal Material

  • Body Seal: Graphite
  • Seat: Alloy (2.4681 / UNS R31233)
  • Seat: Incoloy 825

Shaft Material

  • Drive: AISI 630 Stainless Steel (17-4 PH)
  • Nimonic 80A (Alloy)
  • Stainless Steel (XM-19)

Temperature Range

  • -200° to 600° C (-330° to 1,110° F)

  • Chemical
  • Petrochemical
  • Refining 
  • Pulp and paper

Documentation

Data Sheets

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