Model 990.34

Threaded Process Connection, Diaphragm Seals

Welded Design

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  • Suitable for corrosive, contaminated or hot 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 ... 1000 bar
    Mb 29 mm: 0 ... 600 bar
    Mb 40 mm: 0 ... 400 bar
    Mb 52 mm: 0 ... 160 bar
    See also diagram pressure-temperature rating on data sheet

    Process connection
  • Thread G ½ B (male), G ¼ B (male) similar to EN 837-1,
    without centering spigot
  • Thread G ½, G ¼ (female)
  • Thread ½ NPT, ¼ NPT (male)
  • Thread ½ NPT, ¼ NPT (female)
  • Other on inquiry
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