NVD 402 Non-Return Valve

Brand: Danfoss

Specifications
  • Operates in any position
  • Minimum head loss
  • Silent, reliable sealing, compact
  • Exceptional robustness
  • Notch provided for cable to submerged pumps until DN 100
  • Closing system: long back axial guiding for reduced displacement
  • Sealing guaranteed by a flat seal
  • Return spring

Specifications

Brand

Approvals & Certifications

  • CE
  • PED 97/23/EC

Enclosure, Body Material

  • Cast Iron
  • Ductile Iron
  • Epoxy

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - PN 10
  • 1-1/2” (DN 40) - PN 16

Flange Size - 10” (DN 250)

  • 10” (DN 250) - PN 10

Flange Size - 12” (DN 300)

  • 12” (DN 300) - PN 10

Flange Size - 14” (DN 350)

  • 14” (DN 350) - PN 10

Flange Size - 16” (DN 400)

  • 16” (DN 400) - PN 10

Flange Size - 2-1/2” (DN 65)

  • 2-1/2” (DN 65) - PN 10
  • 2-1/2” (DN 65) - PN 16

Flange Size - 2” (DN 50)

  • 2” (DN 50) - PN 10
  • 2” (DN 50) - PN 16

Flange Size - 20” (DN 500)

  • 20” (DN 500) - PN 10

Flange Size - 3” (DN 80)

  • 3” (DN 80) - PN 10
  • 3” (DN 80) - PN 16

Flange Size - 4” (DN 100)

  • 4” (DN 100) - PN 10
  • 4” (DN 100) - PN 16

Flange Size - 5” (DN 125)

  • 5” (DN 125) - PN 10
  • 5” (DN 125) - PN 16

Flange Size - 6” (DN 150)

  • 6” (DN 150) - PN 10
  • 6” (DN 150) - PN 16

Flange Size - 8” (DN 200)

  • 8” (DN 200) - PN 10

Flow Rate

  • 47 to 6,914 Kvs (m³/hour)

Materials of Construction

  • Brass - Closing System
  • Bronze - Guide, Closing System
  • Cast Iron - Guide
  • Epoxy - Guide
  • Euctile Iron - Guide

Media

  • Glycol Solution - Drinking Water or Chilled Glycolic Water up to 50 %
  • Water - Circulation Water

Process Temperature

  • 10° to 100° C (50° to 212° F)

Ring Material

  • Bronze
  • EPDM

Seat / Seal Material

  • Seal: EPDM

Spring Material

  • 302 Stainless Steel

Stem Material

  • Bronze

Valves

  • Ductile Iron
  • Epoxy

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