Model 990.28-hkxytech
  • Model 990.28

Model 990.28

2015-06-17 21:19:19


Flanged Process Connection, Diaphragm Seals Cell-Type (Sandwich) Seals……


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  • Chemical process industry

  • Petrochemical industry

  • Suitable for corrosive, highly viscous, crystallising or hot pressure media

  • High pressure applications

Special Features

  • 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


Process connection
Flanges DN 40, 50, 80, 100, 125 following EN 1092-1,
sealing face form B1 or NPS 1½", 2", 3", 4", 5" per ASME B 16.5, RF 125 ... 250 AA
For the mounting an additional blind flange is required (not included in the scope of delivery)

Pressure rating
See data sheet

Suitable pressure ranges
25 mbar and up, depending on diaphragm size and process conditions

Material of wetted parts
Stainless steel 316L

Instrument connection
Material stainless steel 316L, adaptor G ½ female per
EN 837-1, welded to capillary

Capillary extension
Radial entry capillary of stainless steel 1.4571, welded to body, armoured, armour material stainless steel 1.4301 Standard extensions: 1, 1.6, 2.5, 4, 5, 6, 7, 8 m
Minimum curve radius: 30 mm