Danfoss Non-Return Valve, NVD 802
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NVD 802 Non-Return Valve

Brand: Danfoss
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Danfoss Non-Return Valve, NVD 802
Specifications
  • Operating position: horizontal and vertical
  • Easy to install and dismantle, space-saving
  • Minimum head loss
  • Does not generate hammering
  • Closing system: disc with parabolic edges with return spring; lateral guiding by 3 or 4 ribs (DN 32 to 100)
  • Closing system with back axial guiding and return spring (DN 125 to 200)
  • Metal/metal seal (machined trim)
  • Using these check valves on networks equipped with piston pumps or compressors is not recommended

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Specifications

Brand

Approvals & Certifications

  • CE
  • PED 97/23/EC

Enclosure, Body Material

  • Cast Iron
  • DZR Brass
  • Epoxy

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - PN 16
  • 1-1/2” (DN 40) - PN 6

Flange Size - 1-1/4” (DN 32)

  • 1-1/4” (DN 32) - PN 16
  • 1-1/4” (DN 32) - PN 6

Flange Size - 2-1/2” (DN 65)

  • 2-1/2” (DN 65) - PN 16
  • 2-1/2” (DN 65) - PN 6

Flange Size - 2” (DN 50)

  • 2” (DN 50) - PN 16
  • 2” (DN 50) - PN 6

Flange Size - 3” (DN 80)

  • 3” (DN 80) - PN 16
  • 3” (DN 80) - PN 6

Flange Size - 4” (DN 100)

  • 4” (DN 100) - PN 16
  • 4” (DN 100) - PN 6

Flange Size - 5” (DN 125)

  • 5” (DN 125) - PN 16

Flange Size - 6” (DN 150)

  • 6” (DN 150) - PN 16

Flange Size - 8” (DN 200)

  • 8” (DN 200) - PN 16

Flow Rate

  • 18 to 546 m³/hour (Kvs)

Materials of Construction

  • 304L Stainless Steel - Stop Guide
  • 316L Stainless Steel - Closing System, Stop Guide
  • Cast Iron - Closing System, Stop Guide
  • Epoxy - Closing System, Stop Guide

Media

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

Process Temperature

  • 10° to 200° C (50° to 392° F)

Ring Material

  • Bronze

Spring Material

  • 302 Stainless Steel

Documentation

Data Sheets

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