990.28 Flanged Process Connection Diaphragm Seal

The WIKA 990.28 is a diaphragm seal with a flanged process connection. Ask our product specialist for more advanced or personalised information, or see downloads.

  • Chemical process industry
  • Petrochemical industry
  • Suitable for corrosive, highly viscous, crystallising or hot pressure media
  • High-pressure applications


  • Sandwich flange (cell) with a flush welded diaphragm with contoured diaphragm bed
  • Available for all standard dimensions and nominal diameters
  • With special materials all wetted parts of the selected material