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Niagara Meters Nutating Disc

Nutating Disc

Brand: Niagara Meters
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Liquid enters a precision-machined chamber containing a disc which nutates (wobbles). 

The position of the disc divides the chamber into compartments containing an exact volume. 

Liquid pressure drives the disc to wobble and a roller cam causes the nutating disc to make a complete cycle. 

The compartments are filled and emptied each cycle. 

The movements of the disc are transmitted by a gear train to a register/totalizer or pulse transmitter. 

Close clearances between the disc and chamber ensure minimum leakage for accurate and repeatable measurement of each volume cycle.
Features
  • Exceptional value: eliminates upstream and downstream straight run piping requirements. Power not required for mechanical version
  • Saves space: very compact size
  • Fluid compatibility: various materials of construction makes flowmeter compatible with broad range of fluids

Specifications

Brand

Accuracy

  • 0.5 % of Rate
  • 1.5 % of Rate over Flow

Approvals & Certifications

  • CSA Class I, Div. 1, Group D, R22 Only, Display & Totalizer Available
  • UL Class I, Div. 1, Group D, R22 Only, Display & Totalizer Available

Ball Material

  • Ryton

Disc Material

  • Ryton

Enclosure, Body Material

  • 316 Stainless Steel
  • Bronze
  • Epoxy Coated Cast Iron
  • High Pressure Epoxy Coated Carbon Steel
  • Register Housing: Aluminum
  • Register Housing: Plastic

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 300#

Flange Size - 2-1/2” (DN 65)

  • 2-1/2” (DN 65) - 150#
  • 2-1/2” (DN 65) - 300#

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150#

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150#

Flow Rate

  • 0.2 to 400 gpm

Gasket Material

  • Nitrile
  • Synthetic Fiber
  • Teflon with 316 Stainless Steel Chamber

Materials of Construction

  • Chamber, Gears: Bronze
  • Chamber: Nickel Resist (Ni-Resist)
  • Chamber: Stainless Steel
  • Gears: 316 Stainless Steel with 316 Stainless Steel Chamber

Media

  • Liquids

Mounting Position

  • Horizontal (Ensure Meter Remains Full with Register Up)

NPT Connection

  • 1” NPT Male
  • 1-1/2” NPT Male
  • 1-1/4” NPT Male
  • 2” NPT Male
  • 2-1/2” NPT Male
  • 3/4” NPT Male

Operation

  • Magnetic Drive
  • Mechanical Drive

Pressure Range

  • psi: 85 to 5,000 (kPa: 586.1 to 34,470, bar: 5.861 to 344.7)

Process Temperature

  • Fluid: 37.78° to 204.4° C (100° to 400° F)

Repeatability

  • 0.25 % of Rate

Documentation

Data Sheets

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