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NAF Trunnion Ball Valve, Trunball DL

Trunnball DL Trunnion Ball Valve

Brand: Flowserve NAF AB
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The NAF Trunball DL is a full-bore trunnion-mounted ball valve, The ball is supported by two large, low friction trunnion bearings for consistent low torque even at high differential pressures. 

Due to its bidirectional tightness, low friction and high controllability, it is an excellent choice for isolation, on/off and modulating control applications.
Features
  • A spring loaded stem seal packing that provides long, maintenance-free and safe operation in automated on/off and control service
  • Direct actuator mounting capabilities of the NAF Turnex actuator which provide a high performance, vibration resistant, compact valve package
  • A sturdy, blowout-proof stem providing high torque transmission with a minimum mechanical backlash for optimum controllability
  • The unique Z-trim option that minimizes cavitation and noise and has excellent control characteristics
  • A trunnion-mounted ball providing bidirectional tightness

Specifications

Brand

Applications

  • Chemical & Petrochemical
  • General Industries
  • Metals & Mining
  • Oil & Gas Applications
  • Power Stations
  • Pulp & Paper

Approvals & Certifications

  • ATEX - 94/9/EC Ex II 2 G/D C
  • CE-Marked According to PED 97/23/EG, Module H, Category III. for Module H1, Category IV

Ball Material

  • 316 Stainless Steel - ASTM A351 CF8M, 1.4408 + Hard Chrome-Plated

Bearing Material

  • Trunnion, Washer: R-PTFE
  • Trunnion: Stainless Steel

Bushing Material

  • R-PTFE Carbon Reinforced

Cover Material

  • AISI 316L Stainless Steel, 1.4401
  • Body: AISI 316 Stainless Steel (CF8M / 1.4404)

Differential Pressure

  • psi: 72.52 (kPa: 500, bar: 5) Min.
  • psi: 725.2 (kPa: 5,000, bar: 50) - Max.

Direct Mount

  • Yes

Enclosure, Body Material

  • 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Carbon Steel
  • Duplex
  • Titanium

Flange Size - 10” (DN 250)

  • 10” (DN 250) - 150# ANSI
  • 10” (DN 250) - 300# ANSI
  • 10” (DN 250) - PN 10
  • 10” (DN 250) - PN 16
  • 10” (DN 250) - PN 25
  • 10” (DN 250) - PN 40

Flange Size - 12” (DN 300)

  • 12” (DN 300) - 150# ANSI
  • 12” (DN 300) - 300# ANSI
  • 12” (DN 300) - PN 10
  • 12” (DN 300) - PN 16
  • 12” (DN 300) - PN 25
  • 12” (DN 300) - PN 40

Flange Size - 14” (DN 350)

  • 14” (DN 350) - 150# ANSI
  • 14” (DN 350) - 300# ANSI
  • 14” (DN 350) - PN 10
  • 14” (DN 350) - PN 16
  • 14” (DN 350) - PN 25
  • 14” (DN 350) - PN 40

Flange Size - 16” (DN 400)

  • 16” (DN 400) - 150# ANSI
  • 16” (DN 400) - 300# ANSI
  • 16” (DN 400) - PN 10
  • 16” (DN 400) - PN 16
  • 16” (DN 400) - PN 25
  • 16” (DN 400) - PN 40

Flange Size - 18” (DN 450)

  • 18” (DN 450) - 150# ANSI
  • 18” (DN 450) - 300# ANSI
  • 18” (DN 450) - PN 10
  • 18” (DN 450) - PN 16
  • 18” (DN 450) - PN 25
  • 18” (DN 450) - PN 40

Flange Size - 20” (DN 500)

  • 20” (DN 500) - 150# ANSI
  • 20” (DN 500) - 300# ANSI
  • 20” (DN 500) - PN 10
  • 20” (DN 500) - PN 25
  • 20” (DN 500) - PN 40
  • 20” (DN 500) - PN 16

Flange Size - 24” (DN 600)

  • 24” (DN 600) - 150# ANSI
  • 24” (DN 600) - 300# ANSI
  • 24” (DN 600) - PN 10
  • 24” (DN 600) - PN 16
  • 24” (DN 600) - PN 25
  • 24” (DN 600) - PN 40

Flange Size - 28” (DN 700)

  • 28” (DN 700) - 150# ANSI
  • 28” (DN 700) - 300# ANSI
  • 28” (DN 700) - PN 10
  • 28” (DN 700) - PN 16
  • 28” (DN 700) - PN 25
  • 28” (DN 700) - PN 40

Flange Size - 32” (DN 800)

  • 32” (DN 800) - 150# ANSI
  • 32” (DN 800) - 300# ANSI
  • 32” (DN 800) - PN 10
  • 32” (DN 800) - PN 16
  • 32” (DN 800) - PN 25
  • 32” (DN 800) - PN 40

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150# ANSI
  • 6” (DN 150) - 300# ANSI
  • 6” (DN 150) - PN 16
  • 6” (DN 150) - PN 40

Flange Size - 8” (DN 200)

  • 8” (DN 200) - 150# ANSI
  • 8” (DN 200) - 300# ANSI
  • 8” (DN 200) - PN 10
  • 8” (DN 200) - PN 16
  • 8” (DN 200) - PN 25
  • 8” (DN 200) - PN 40

Flow Capacity

  • 23 to 171,339 Cv at 15° to 90° Opening Angle

Materials of Construction

  • Anti-Friction Washer: PTFE + Stainless Steel
  • Circlip: 304 (A2) Stainless Steel
  • Key: Stainless Steel
  • Stud: Stainless Steel (ASTM A193 Grade B8M, ASTM A193 Grade B7M)
  • Trunnion Plate: F51 Duplex Stainless Steel (1.4470)
  • Washer, Pin: AISI 316L Stainless Steel, 1.4401

Media

  • Solids
  • Steam
  • Test: Water

Nut & Bolt Material

  • Alloy Steel (ASTM A194 Grade 8M, ASTM A194 Grade 2HM)
  • Stainless Steel (ASTM A193 Grade B8M, ASTM A193 Grade 8M)

Packing Material

  • Stem: R-PTFE Carbon Reinforced

Port

  • Full

Process Connection Style

  • Flanged

Ring Material

  • Seat: Alloy 6 (Cobalt/Stellite)
  • Seat: Stainless Steel

Screw Material

  • Stainless Steel

Seat / Seal Material

  • Body & Seat Seal: PTFE

Spring Material

  • 631 Stainless Steel (17-7PH)
  • AISI 316L Stainless Steel, 1.4401

Temperature Range

  • -30° to 250° C (-22° to 482° F)

Valve Type

  • Automated

Documentation

Data Sheets

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