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Instantly add the Check Tilting Disc Check Valve and 50,000+ more product series to your store or catalog  
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NAF Tilting Disc Check Valve, Check

Check Tilting Disc Check Valve

Brand: Flowserve NAF AB
Add Product to My Catalog

The circular wafer body is designed to be clamped between two pipe flanges. 

The valve disc is suspended on two heavy stub shafts with the selected suspension points giving the fastest closing possible. 

The stub shafts are sealed externally by integrally welded plates. 

The seat is oblique in order to give a short closing travel and thus a short closing time. 

NAF-Check can also be supplied with an auxiliary spring. 

Due to the lightweight disc, the auxiliary spring can shorten closing time further and reduce water hammering to one fourth that obtained using springless valves at quickly returning liquid flow. 

In order to facilitate installation, valves >DN 50 are equipped with a lifting eye. 

An arrow cast into the lifting eye indicates the flow direction.

1 - 1 of 1 Part Numbers
NAF-CHECK
NAF-CHECK
  • Model - NAF 526520
1 - 1 of 1 Part Numbers

Specifications

Brand

Applications

  • Gas or Vapour Flow
  • Liquid Flow

Approvals & Certifications

  • CE-Marked According to PED 97/23/EG, Module H, Category III

Approvals & Certifications

  • API 598, 594
  • ISO 9001

Disc Material

  • Stainless Steel Alloy (ASTM A487 Grade CA6NM)
  • Steel (EN 1.4317, EN 1.4470)

Enclosure, Body Details

  • Wafer

Enclosure, Body Material

  • 304H Stainless Steel
  • 316 Stainless Steel (EN 1.4436)
  • 316L Stainless Steel (EN 1.4408/CF8M)
  • Cast Steel (EN 1.0619)

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 300#
  • 1-1/2” (DN 40) - PN 10 (DIN)
  • 1-1/2” (DN 40) - PN 16 (DIN)
  • 1-1/2” (DN 40) - PN 25 (DIN)
  • 1-1/2” (DN 40) - PN 40 (DIN)
  • 1-1/2” (DN 50) - 150#

Flange Size - 10” (DN 250)

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

Flange Size - 12” (DN 300)

  • 12” (DN 300) - 150#
  • 12” (DN 300) - PN 10 (DIN SS)
  • 12” (DN 300) - PN 16 (DIN SS)
  • 12” (DN 300) - PN 25 (DIN SS)

Flange Size - 14” (DN 350)

  • 14” (DN 350) - 150#
  • 14” (DN 350) - PN 10 (DIN SS)
  • 14” (DN 350) - PN 16 (DIN SS)
  • 14” (DN 350) - PN 25 (DIN SS)

Flange Size - 16” (DN 400)

  • 16” (DN 400) - 150#
  • 16” (DN 400) - PN 10 (DIN SS)
  • 16” (DN 400) - PN 16 (DIN SS)
  • 16” (DN 400) - PN 25 (DIN SS)

Flange Size - 18” (DN 450)

  • 18” (DN 450) - 150#
  • 18” (DN 450) - PN 10 (DIN SS)
  • 18” (DN 450) - PN 16 (DIN SS)
  • 18” (DN 450) - PN 25 (DIN SS)

Flange Size - 2-1/2” (DN 65)

  • 2-1/2” (DN 65) - 150#
  • 2-1/2” (DN 65) - 300#
  • 2-1/2” (DN 65) - PN 10 (DIN)
  • 2-1/2” (DN 65) - PN 16 (DIN)
  • 2-1/2” (DN 65) - PN 25 (DIN)
  • 2-1/2” (DN 65) - PN 40 (DIN)

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150#
  • 2” (DN 50) - 300#
  • 2” (DN 50) - PN 10 (DIN)
  • 2” (DN 50) - PN 16 (DIN)
  • 2” (DN 50) - PN 25 (DIN)
  • 2” (DN 50) - PN 40 (DIN)

Flange Size - 20” (DN 500)

  • 20” (DN 500) - 150#
  • 20” (DN 500) - PN 10 (DIN SS)
  • 20” (DN 500) - PN 16 (DIN SS)
  • 20” (DN 500) - PN 25 (DIN SS)

Flange Size - 24” (DN 600)

  • 24” (DN 600) - 150#
  • 24” (DN 600) - PN 10 (DIN SS)
  • 24” (DN 600) - PN 16 (DIN SS)
  • 24” (DN 600) - PN 25 (DIN SS)

Flange Size - 28” (DN 700)

  • 28” (DN 700) - PN 10 (DIN SS)
  • 28” (DN 700) - PN 16 (DIN SS)
  • 28” (DN 700) - PN 25 (DIN SS)

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150#
  • 3” (DN 80) - 300#
  • 3” (DN 80) - PN 10 (DIN)
  • 3” (DN 80) - PN 16 (DIN)
  • 3” (DN 80) - PN 25 (DIN)
  • 3” (DN 80) - PN 40 (DIN)

Flange Size - 32” (DN 800)

  • 32” (DN 800) - PN 10 (DIN SS)
  • 32” (DN 800) - PN 16 (DIN SS)
  • 32” (DN 800) - PN 25 (DIN SS)

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 300#
  • 4” (DN 100) - PN 10 (DIN)
  • 4” (DN 100) - PN 16 (DIN)
  • 4” (DN 100) - PN 25 (DIN)
  • 4” (DN 100) - PN 40 (DIN)
  • 4” (DN 80) - 150#

Flange Size - 40” (DN 1000)

  • 40” (DN 1000) - PN 10 (DIN SS)
  • 40” (DN 1000) - PN 16 (DIN SS)
  • 40” (DN 1000) - PN 25 (DIN SS)

Flange Size - 5” (DN 125)

  • 5” (DN 125) - 150#
  • 5” (DN 125) - 300#
  • 5” (DN 125) - PN 10 (DIN)
  • 5” (DN 125) - PN 16 (DIN)
  • 5” (DN 125) - PN 25 (DIN)
  • 5” (DN 125) - PN 40 (DIN)

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150#
  • 6” (DN 150) - 300#
  • 6” (DN 150) - PN 10 (DIN)
  • 6” (DN 150) - PN 16 (DIN)
  • 6” (DN 150) - PN 25 (DIN)
  • 6” (DN 150) - PN 40 (DIN)

Flange Size - 8” (DN 200)

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

Media

  • Gas
  • Steam
  • Test: Water

Documentation

Data Sheets

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