Model 990.15

Flanged Process Connection, Diaphragm Seals

For Block Flange or Saddle Flange

Selected documents
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  • Specifically for connection with block flange or saddle flange and to combine with bourdon tube pressure gauges
  • Suitable for corrosive, contaminated, hot or viscous pressure media
  • Chemical and petrochemical industry

Special Features

  • Design with sealing face and integral diaphragm to be sandwiched between flanges
  • Process connection for direct thread joint with block or saddle flange
  • Together with the block or saddle flange the diaphragm seal forms a well-matched system
  • Wide variety of special materials


Pressure rating
PN 100 or 250 bar

Suitable pressure ranges
0 ... 0.6 bar to 0 ... 250 bar

Body (process connection)
Stainless steel 316L, axial welded capillary connection (instrument connection by adaptor G ½ female)

Stainless steel 316L, welded with body
Effective diameter of diaphragm dM = 52 mm

Sealing ring
FPM (Viton®) max. 200 °C

Assembly parts (for process connection)
Retainer flange, hexagonal bolts and distance ring: Stainless steel, max. 260 °C 

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