Orifice plate with annular chamber and corner taps

  • Separate type, for installation between standard flanges (EN 1092-1), optional shut-off valves
  • Size: DN50…600; up to PN100
  • Temperature: up to +400°C / +752°F
  • Material: 1.4404 / 316L



The OPTIBAR OP 4100 is an orifice plate with an integrated annular chamber and corner taps. It features a carrier ring that is split into two pieces to form the two ring chambers. Within the ring chambers an average of flow disturbances can be achieved and therefore a more stable pressure signal can be measured.The orifice plate with annular chamber is intended for installation between standard flanges.

Product highlights

  • Cost-effective DP flow element according to EN ISO 5167
  • Sizing: EN ISO 5167, ASME MFC-3M, AGA 3, ASME PTC 19.5 2004, GOST 8.586, RD 50-411-83
  • Pressure values are averaged within integrated annular chambers
  • Lowest uncertainty of discharge coefficient
  • High Reynolds number permissible according to norm

Typical applications

  • For differential pressure flow measurement with OPTIBAR DP 7060 transmitter
  • Liquid, gas and steam applications at more difficult flow conditions

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