Model 990.34

Threaded process connection, diaphragm seals

Welded design

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  • Suitable for corrosive, contaminated, hot or viscous pressure media.
  • Chemical process industry
  • Petrochemical industry
  • Water treatment

Special Features

  • All-welded construction
  • Wide selection of materials
  • Suitable for high pressure ranges


Pressure ranges and diameter of diaphragm
The maximum pressure range is dependent on the effective diameter of the diaphragm (Mb) and the process temperature (here max. +50 °C)
Mb 22 mm: 0 ... 1500 psi
Mb 32 mm: 0 ... 8700 psi
Mb 52 mm: 0 ... 5000 psi
See also diagram pressure-temperature rating on data sheet

Process connection

  • Thread ½ NPT, ¼ NPT (male)
  • Thread ½ NPT, ¼ NPT (female)
  • Thread G ½, G ¼ (female)
  • Other on inquiry
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