Answer / sabry

Actually It's called "Honed meter run".

It's a 1 piece manufacturer piping assembly, used to hold the orifice.

It's called "Honed" as the piping internal surface is honed/machined to be glass smooth surface.

This assembly is very expensive & it's used in custody transfer applications.

REFERNCE"Lessons In Industrial Instrumentation"/Page:584,585.

Good Luck

Ahmed Sabry
I&C Senior Engineer
Cell:+2 (0122) 1367310

Answer / inst & control eng

Honed flow sections are orifice runs made in sizes of 0.5"
to 1.5". These devices are used for low flows of gas,
liquids and steam services with a higher tolerance than
standard sized orifice flow measurement of pipe line size
more than 2".

Answer / murali

to create the differential pressure from that you cam
derive the flow of media

Answer / rathna

Horn type orifice mean, it is FLOW NOZZLE

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