Model 990.40

Threaded connection, diaphragm seal

Threaded design, large working volume

Selected documents
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  • For assembly (direct assembly, via a cooling element or a capillary) with measuring instruments for low pressures and with differential pressure measuring instruments
  • For aggressive, contaminated or hot media
  • Filter monitoring
  • Level measurement


Special Features

  • Internal diaphragm with large working volume
  • Special materials available
  • Low temperature error due to large diaphragm diameter (realisation of low measuring ranges possible)
  • Wide temperature application range due to large working volume
  • Integrated flushing connections (optional)


Process connection

Nominal pressure
PN 100 with diaphragm Ø 89 mm

Pressure ranges
max. 0 ... 100 bar

Upper body
Stainless steel 316L

Stainless steel 316L, welded with upper body

PTFE (up to a maximum of 260 °C)

Lower body (process connection)
Stainless steel 316L,
G ½, ½ NPT (female)
G ½ B, ½ NPT or M20 x 1.5 (male)

Stainless steel 1.4571

Measuring instrument connection
Direct assembly (weld-in connection)

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