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NVD 402 Non-Return Valve
Brand: DanfossSpecifications
- 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
