Orifice Plates

Orifice Flanges with Orifice Plate


Orifice plates BLS 100 are flow elements used for flow measurement of aggressive and non-aggressive gases, steam and liquids, especially in large pipes.


Orifice plate with welded-on handle for direct installation between flanges or orifice flanges (see below). Depending on the process conditions, the plate type may be manufactured as:

  • square edge
  • quarter circle nozzle
  • segmental
  • plate with conical entrance
  • double cone

Pressure Taps

Pressure taps may be positioned in the flange blade or in the pipeline. The distance to the orifice plate cannot be chosen freely. In special cases the pressure taps may be positioned as corner tapping in the flange blades.

You would like to have a complete package including orifice plate, pressure taps and inlet/outlet pipe? Then we recommend our meter runs!

Measuring Uncertainty

The measuring uncertainty depends on the process conditions and amounts to approx. 0,5% – 1,2% of the discharge coefficient.

Orifice Flanges

Orifice flanges are specially manufactured for the differential pressure flow measurement. The pressure tap bore holes are located at a specific distance in front of/behind the orifice plate. Typically, orifice flanges are manufactured according to ASME B16.36 or DIN 19214. We can supply other standards as well such as NORSOK or JIS.


We can offer a complete package including orifice flanges, shut-off valves and/or manifold.


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