Model 990.10 Diaphragm Seal with Threaded Connection

Brand: WIKA Instruments

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.

The pressure is transmitted to the measuring instrument via the system fill fluid which is inside the diaphragm seal system.

For the implementation of demanding customer applications, there are a wide variety of designs, materials and system fill fluids available.

The model 990.10 diaphragm seal with threaded connection in threaded design is suitable for versatile application areas. A replacement of the lower body is possible without modifications on the diaphragm seal system. With this diaphragm seal, high pressure ranges up to 250 bar can be covered.

Mounting of the diaphragm seal to the measuring instrument may be made via a direct connection, for high temperatures via a cooling element or via a flexible capillary.

For the material selection WIKA offers a variety of solutions, in which the upper body of the diaphragm seal and the wetted parts can be made of identical or different materials. The wetted parts can, as an alternative, be coated.
Features
  • Process connection with thread
  • 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
  • None
  • Teflon, Virgin
  • Stainless Steel, Silver-Plated
  • Inconel / Silver

Diaphragm Material

  • Monel 400
  • Hastelloy B-2
  • Hastelloy C-276
  • Tantalum
  • Nickel 200
  • Inconel 600
  • Incoloy 825
  • Carpenter 20
  • Viton
  • 316 Stainless Steel, Teflon Coated or Virgin Teflon Lined
  • 316 Stainless Steel, Gold-Plated
  • 316L Stainless Steel

Clamp & Support Material

  • Carbon Steel, Zinc-Plated
  • Stainless Steel

Flushing Connection

  • 1/4" NPT Female
  • 1/8" NPT Female

Lower Housing Material

  • Monel 400
  • Hastelloy B-2
  • Hastelloy C-276
  • Nickel 200
  • Inconel 800
  • Incoloy 825
  • Carpenter 20
  • Carbon Steel, Nickel-Plated
  • Teflon, Virgin
  • Titanium, Grade 2
  • 316 Stainless Steel

Upper Housing Material

  • Carbon Steel, Nickel-Plated
  • Titanium, Grade 2
  • 316 Stainless Steel

Process Connection

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

Instrument Connection

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

Diaphragm Seal Design

  • Welded Diaphragm

Pressure Rating

  • Maximum 3,675 psi

Operating Temperature

  • -130° to 752° F (-90° to 400° C)

  • For Aggressive, Hot, Corrosive, Environmentally Hazardous or Toxic Media
  • Process Industry
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