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Orifice Flange Meter Tube Assembly

Standard Meter Tubes: Are fabricated from A-106B cold drawn seamless pipe, or honed meter tubing with the outer ends beveled ready to weld into the line. One 1/2" 3000# half coupling on downstream section with mircometer readings furnished for customers records. For line sizes smaller than 2" a honed flow tube is recommended.


Standard Options

  • Flanged outer ends: Using nominal flanges manufactured from a compatible material.
  • Threaded Ends: For ease of installation into the line.
  • Single & Dual Chamber fittings: For those lines that can not be shut down during periodic maintenance and plate replacement.
  • Other materials and designs available upon request.

Orifice Flange Meter Tube Assembly
Pipe Size U D OA Pipe I.D.
S/40 S/80
2" 5' -0" 3' -0" 8' -0" 2.067" 1.939"
3" 6' -0" 4' -0" 10' -0" 3.068 2.900
4" 8' -0" 4' -0" 12' -0" 4.026 3.826
6" 12' -0" 5' -0" 17' -0" 6.065 5.761
8" 15' -0" 5' -0" 20' -0" 7.981 7.625
10" 19' -0" 6' -0" 25' -0" 10.020 9.564
12" 21' -0" 7' -0" 28' -0" 11.938 11.376

Lengths meet AGA Figure 3C 0.75 Beta Ratio (12" size at 0.73 Beta Ratio). All sizes meet AGA Figure 3A at 0.75 Beta Ratio using line-type straightening vane.