Taping flanges with centric orifice plate provide economic and progressive method of build-in orifice plate measurement of flow volume. Since the tapings of differential pressure are integrated directly into the flange body, there is no need to supply orifice plate flange or to bore pressure tapings into the piping face.

It is analogous to classical orifice plate, orifice plate bore is eccentric and when flow profile is oriented in the lower part of horizontal (inclined) piping, flow of impurities in the measured fluid is enabled. Due to use of eccentric orifice plate in petrochemistry, chemical and atomic industry, it is made of SST grade stainless steel and of steels with high content of nickel (inconell, hastelloy).

Restriction of flow section of the measured fluid is ensured by circle segment (plate with direct sharp edge in the circle section).  When orienting flow section in the lower part of horizontal (oblique) piping, flow of impurities in the measured fluid is enabled. Differential pressure tapings are placed vertically in the upper part of orifice plate. Segmental orifice plate can be supplied separately with differential pressure tapings as working meter without verification or including straight piping sections as verified meter.

Except for all advantages of centric orifice plates (such as simplicity, replaceability, reliability), multi-bore orifice plates have lower built-in lengths enabling wider possibilities of their use.

Restricting orifice plates enable to reduce pressure of medium in the orifice plate outlet (under constant flow) to required level, i.e. these function as hydraulic resistor. If these are used in cascades, they gradually decrease medium pressure and prevent it from cavitation.