Diaphragm seal Varivent® (mod. SMV)

This enables a hygienic integration of measuring instruments into pipelines or, by means of VARINLINE® housing connection flanges, into tanks.

The diaphragm seal systems can withstand the cleaning vapour temperatures occurring in the SIP processes and thus ensure a sterile connection between the medium to be measured and the diaphragm seal.

Assembly of the diaphragm seal and measuring instrument is made via a direct assembly as standard or optionally via a cooling element or a flexible capillary.



  • Working pressure: from 0...1 bar to 0...60 bar
  • Process temperature: from -10 to 100° C
  • Accuracy: 1%
  • Instrument connection: 1/2" or 1/4" gas
  • Diaphragm: laser welded and electropolishing
  • Filling liquid: mineral oil (FDA approved) for food industry
  • Process connection: AISI 316 as per VARIVENT
  • Assembly: directly to the instrument