990.35 Pressure interface with WIKA flange


Šifra: 990.35

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Delivery time: approximately 3-4 weeks

  • Pressure range: depends on flange and version
  • intermediate flange with extended diaphragm
  • standard dimensions available
  • when special materials are selected, all wetted parts of the pressure interface are made of the selected material



990.35 pressure interface with flange (diaphragm separator) protects pressure measuring instruments in applications with difficult media. The pressure interface affects the separation of instrument and medium.

The pressure is transmitted to the measuring instrument via a filling fluid system within the pressure interface system. A wide range of designs, materials and system fillers are available to meet customer requirements. Together with the blank flange, the 990.35 is available for all commonly used standard flanges. The pressure interface can be attached to the measuring instrument by direct connection, or at high temperatures via a cooling element or flexible hose.

WIKA offers different solutions in material selection, where the top, the extended diaphragm and the wetted parts of the pressure interface can be made of the same or different materials. Alternatively, the pressure interface may also have a coating.


Fields of application, applications 990.35

  • for aggressive, hot, highly viscous or crystallising media
  • chemical and petrochemical process industries
  • thick-walled or insulated pipelines and pressure vessels
  • high pressure applications



All functions of the 990.35 can be controlled with the Diaphragm Seal Calculation Software.


Pressure interfaces are used in conjunction with pressure gauges. Read more about pressure interfaces here.