Model 990.10 Diaphragm Seal with Threaded Connection

Brand: WIKA Instruments Ltd.

Diaphragm seals are used for the protection of pressure measuring instruments in applications with difficult media. 

In diaphragm seal systems, the diaphragm of the diaphragm seal effects the separation of the instrument and the medium.
Features
  • Process connection with thread to provide for direct threaded connection.
  • Version with internal diaphragm, diaphragm seal parts screwed together.
  • Large selection of process connections and materials.
  • Flushing connections optionally available.

Specifications

Gasket Material

  • Viton®
  • Buna “N”
  • Teflon®, virgin
  • Stainless steel, silver-plated
  • None

Diaphragm Material

  • 316L stainless steel
  • Monel® 400
  • Hastelloy® B-2
  • Hastelloy® C-276
  • 316 stainless steel, Teflon® coated
  • 316 stainless steel, virgin Teflon® lined
  • Tantalum
  • Nickel 200
  • Inconel® 600
  • Incoloy® 825
  • Carpenter® 20
  • 316 stainless steel, gold-plated
  • Viton®
  • Titanium, grade 2

Clamp & Support Material

  • Carbon Steel, zinc-plated
  • Stainless steel
  • High temperature stainless steel
  • None

Flushing Connection

  • 1/4” NPT female
  • None
  • 1/8” NPT female

Lower Housing Material

  • 316 stainless steel
  • Monel® 400
  • Hastelloy® B-2
  • Hastelloy® C-276
  • Teflon®, virgin
  • Titanium, grade 2
  • Nickel 200
  • Inconel® 800
  • Incoloy® 825
  • Carpenter® 20
  • Carbon steel, nickel-plated

Upper Housing Material

  • Carbon steel, nickel-plated
  • Titanium, grade 2
  • 316 stainless steel

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

Instrument Connection

  • 1/4” NPT female
  • 1/2” NPT female
  • Capillary connection

Diaphragm Seal Design

  • Welded Diaphragm

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