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Model 990.40 Threaded Connection Diaphragm Seal

Brand: WIKA Alexander Wiegand SE & Co. KG
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Threaded design, large working volume.
Features
  • Internal diaphragm with large working volume.
  • Special materials available.
  • Low temperature error due to large diaphragm diameter (realisation of low measuring ranges possible).
  • Wide temperature application range due to large working volume.
  • Integrated flushing connections (optional).
Threaded design, large working volume.
Features
  • Internal diaphragm with large working volume.
  • Special materials available.
  • Low temperature error due to large diaphragm diameter (realisation of low measuring ranges possible).
  • Wide temperature application range due to large working volume.
  • Integrated flushing connections (optional).
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Specifications

Brand

Process Connection

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

Instrument Connection

  • 1/4” NPT Female
  • 1/2” NPT Female
  • Capillary Connection

Housing Material

  • Incoloy 825
  • Inconel 600
  • Nickel 200
  • Hastelloy C-276
  • Carbon Steel, Nickel-Plated
  • 316 Stainless Steel
  • Titanium
  • Monel 400
  • Hastelloy B-2

Diaphgram Material

  • 316 Stainless Steel
  • Monel 400
  • Hastelloy B-2
  • Hastelloy C-276
  • Tantalum
  • Titanium
  • Nickel 200
  • Incoloy 825
  • Inconel 600

Gasket Material

  • Viton
  • Teflon
  • Alloy 718, Silver-Plated

Bolt Material

  • Carbon Steel, Zinc-Plated
  • Stainless Steel

Flushing Connection

  • 1/8” NPT Female
  • 1/4” NPT Female
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Applications

Process industry diaphragm seal to combine with Bourdon tube pressure gauges. Intended for corrosive, contaminated, hot or viscous pressure media.
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