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Neles Series L1 & L2 Eccentric Disc Valve
Brand: ValmetMetso's Neles Neldisc series L1 is a wafer type, and series L2 a lug 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.
Specifications
Brand
Applications
- Gases
- Liquids
- Pulp Stocks Both on Control & Shutoff Services
- Steam
Approvals & Certifications
- Body & Clamp Ring: EN 10 204 - 3.1B
- Fire Test: API 607, 4th Edition
- Fire Test: BS6755
- ISO 15848
Bearing Material
- PTFE
Disc Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408
- Cast Stainless Steel (ASTM A 351 Grade CG8M)
Enclosure, Body Details
- Lug
- Wafer
Enclosure, Body Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408
- Carbon Steel (ASTM A 216 Grade WCB, ASTM A352 Grade LCC)
- Cast Stainless Steel (ASTM A 351 Grade CG8M)
Flange Material
- Blind: 316 Stainless Steel - ASTM A351 CF8M, 1.4408
- Blind: Carbon Steel (ASTM A 216 Grade WCB)
Flange Size - 18” (DN 450)
- 18” (DN 450) - 150# ASME
- 18” (DN 450) - 300# ASME
- 18” (DN 450) - JIS 10K
- 18” (DN 450) - JIS 16K
- 18” (DN 450) - JIS 20K
- 18” (DN 450) - JIS 30K
- 18” (DN 450) - PN 10
- 18” (DN 450) - PN 16
- 18” (DN 450) - PN 20 (ISO)
- 18” (DN 450) - PN 25
- 18” (DN 450) - PN 40
- 18” (DN 450) - PN 50 (ISO)
Flange Size - 20” (DN 500)
- 20” (DN 500) - 150# ASME
- 20” (DN 500) - 300# ASME
- 20” (DN 500) - JIS 10K
- 20” (DN 500) - JIS 16K
- 20” (DN 500) - JIS 20K
- 20” (DN 500) - JIS 30K
- 20” (DN 500) - PN 10
- 20” (DN 500) - PN 16
- 20” (DN 500) - PN 20 (ISO)
- 20” (DN 500) - PN 25
- 20” (DN 500) - PN 40
- 20” (DN 500) - PN 50 (ISO)
Flange Size - 24” (DN 600)
- 24” (DN 600) - 150# ASME
- 24” (DN 600) - 300# ASME
- 24” (DN 600) - JIS 10K
- 24” (DN 600) - JIS 16K
- 24” (DN 600) - JIS 20K
- 24” (DN 600) - JIS 30K
- 24” (DN 600) - PN 10
- 24” (DN 600) - PN 16
- 24” (DN 600) - PN 20 (ISO)
- 24” (DN 600) - PN 25
- 24” (DN 600) - PN 40
- 24” (DN 600) - PN 50 (ISO)
Flange Size - 28” (DN 700)
- 28” (DN 700) - 150# ASME
- 28” (DN 700) - 300# ASME
- 28” (DN 700) - JIS 10K
- 28” (DN 700) - JIS 16K
- 28” (DN 700) - JIS 20K
- 28” (DN 700) - JIS 30K
- 28” (DN 700) - PN 10
- 28” (DN 700) - PN 16
- 28” (DN 700) - PN 20 (ISO)
- 28” (DN 700) - PN 25
- 28” (DN 700) - PN 40
- 28” (DN 700) - PN 50 (ISO)
Flange Size - 30” (DN 750)
- 30” (DN 750) - 150# ASME
- 30” (DN 750) - 300# ASME
- 30” (DN 750) - JIS 10K
- 30” (DN 750) - JIS 16K
- 30” (DN 750) - JIS 20K
- 30” (DN 750) - JIS 30K
- 30” (DN 750) - PN 10
- 30” (DN 750) - PN 16
- 30” (DN 750) - PN 20 (ISO)
- 30” (DN 750) - PN 40
- 30” (DN 750) - PN 50 (ISO)
Flange Size - 32” (DN 800)
- 32” (DN 800) - 150# ASME
- 32” (DN 800) - 300# ASME
- 32” (DN 800) - JIS 10K
- 32” (DN 800) - JIS 16K
- 32” (DN 800) - JIS 20K
- 32” (DN 800) - JIS 30K
- 32” (DN 800) - PN 10
- 32” (DN 800) - PN 16
- 32” (DN 800) - PN 20 (ISO)
- 32” (DN 800) - PN 25
- 32” (DN 800) - PN 40
- 32” (DN 800) - PN 50 (ISO)
Flange Size - 36” (DN 900)
- 36” (DN 900) - 150# ASME
- 36” (DN 900) - 300# ASME
- 36” (DN 900) - JIS 10K
- 36” (DN 900) - JIS 16K
- 36” (DN 900) - JIS 20K
- 36” (DN 900) - JIS 30K
- 36” (DN 900) - PN 10
- 36” (DN 900) - PN 16
- 36” (DN 900) - PN 20 (ISO)
- 36” (DN 900) - PN 25
- 36” (DN 900) - PN 40
- 36” (DN 900) - PN 50 (ISO)
Flange Size - 40” (DN 1000)
- 40” (DN 1000) - 150# ASME
- 40” (DN 1000) - 300# ASME
- 40” (DN 1000) - JIS 10K
- 40” (DN 1000) - JIS 16K
- 40” (DN 1000) - JIS 20K
- 40” (DN 1000) - JIS 30K
- 40” (DN 1000) - PN 10
- 40” (DN 1000) - PN 16
- 40” (DN 1000) - PN 20 (ISO)
- 40” (DN 1000) - PN 25
- 40” (DN 1000) - PN 40
- 40” (DN 1000) - PN 50 (ISO)
Flange Size - 48” (DN 1200)
- 48” (DN 1200) - 150# ASME
- 48” (DN 1200) - 300# ASME
- 48” (DN 1200) - JIS 10K
- 48” (DN 1200) - JIS 16K
- 48” (DN 1200) - JIS 20K
- 48” (DN 1200) - JIS 30K
- 48” (DN 1200) - PN 10
- 48” (DN 1200) - PN 16
- 48” (DN 1200) - PN 20 (ISO)
- 48” (DN 1200) - PN 25
- 48” (DN 1200) - PN 40
- 48” (DN 1200) - PN 50 (ISO)
Flow Rate
- 14,800 to 68,000 Cv at Cv 90° - L2C Model
- 17,600 to 116,000 Cv at Cv 90° - L1C Model
- 9,100 to 40,300 Cv at Cv 90° - L1D Model
- 9,460 to 28,800 Cv at Cv 90° - L2D Model
Gasket Material
- Graphite
Gland Material
- 316 Stainless Steel - ASTM A351 CF8M, 1.4408
Gland Packing Material
- Polytetrafluoroethylene (PTFE)
Materials of Construction
- Key, Pin (L1 & L2C Model): AISI 329 Stainless Steel (SS 14 2324)
- Net, Stud: Stainless Steel
- Pin: 630 Stainless Steel (ASTM A 564 Grade 630, 17-4 PH) - L1 & L2D Model
- Retaining Plate: AISI 316L Stainless Steel (DIN 17440, 1.4435)
Media
- Cryogenic Fluids
- Gas
- Liquids
- Steam
- Water
Name Plate, Tag Material
- AISI 304 Stainless Steel
NPT Connection
- 1” NPT
- 1/2” NPT
- 3/4” NPT
Nut & Bolt Material
- Hexagon Nut: Stainless Steel
- Lifting Eye Bolt: Steel
Packing Material
- Graphite
- PTFE
Proof Pressure
- Seat Test: 1.1 times Nominal Pressure, Shell Test: 1.5 times Nominal Pressure
Ring Material
- Clamp: 316 Stainless Steel - ASTM A351 CF8M, 1.4408
- Clamp: Carbon Steel (1.0425, ASTM A 515 Grade 55)
- Clamp: Cast Stainless Steel (ASTM A 351 Grade CG8M)
- Seat: 165M Stainless Steel (1.4418)
- Seat: Hard Chrome
- Seat: Lncoloy 825 (ASTM B 424)
- Seat: Ni-Fe Base Superalloy
Screw Material
- Hexagon Socket: Stainless Steel (ISO 3506 A4-80)
- Hexagon: Zinc-Plated Steel
Seat / Seal Material
- Body Seal: Graphite
- Seat: Alloy [Ultimet (2.4681)]
- Seat: Rubber (Nimonic 80H HCr-Plated)
- Seat: Stainless Steel (SS Avesta 248 SV)
Shaft Material
- Drive: AISI 329 Stainless Steel (SS 14 2324) - L1 & L2C Model
- Drive: AISI 630 Stainless Steel (ASTM A 564 Grade 630,17-4 PH) - L1 & L2D Model
Spring Material
- Disc Spring Set: Electroless Nickel-Plated Spring Steel (EN 10083 to 1.8159)
Temperature Range
- -200° to 600° C (-330° to 1,110° F)
UNF/UNC Connection
- 1” UNC
- 1-1/2” UNC
- 1-1/4” UNC
- 3/4” UNC
- Liquids
- Gases
- Steam
- Pulpstocks both on control and shutoff services
