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Diaphragm Seals

WIKA

990.12 Flanged Process Connection Diaphragm Seal

The WIKA 990.12 diaphragm seal is ideally suited for applications with small process connections. Due to the internal diaphragm, low measuring ranges can be realised — the large diameter of the diaphragm affects a lower deviation at the measuring instrument when the temperature changes. By means of optionally available flushing connections, the process side of the flange can be cleaned and flushed as required.

Price and delivery time will be given on request
Level of cleanliness of wetted parts Oil and grease free per ASTM G93-03 level F WIKA standard (< 1,000 mg/m²)
Sealing FPM, max. 200°C, PTFE, max. 260°C
Connection to the measuring instrument Axial adapter
Type of mounting Direct mounting
Retainer parts Stainless steel
Vacuum service Basic service

The WIKA 990.12 diaphragm seal is ideally suited for applications with small process connections. Due to the internal diaphragm, low measuring ranges can be realised — the large diameter of the diaphragm affects a lower deviation at the measuring instrument when the temperature changes. By means of optionally available flushing connections, the process side of the flange can be cleaned and flushed as required.

Assembly 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, the extended diaphragm and the wetted parts can be made of identical or different materials. The diaphragm and the extended diaphragm can, as an alternative, be coated.

Applications

  • Suitable for corrosive, contaminated, highly viscous or hot pressure media
  • Chemical process industry
  • Petrochemical industry
  • High process pressures
Datasheet WIKA 990.12 Flanged Process Connection Diaphragm seal with threaded design DS_DS9931_GB_1168.pdf

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Get in touch with Bart our diaphragm seal specialist

Bart

Bart de Haan

Managing Director

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