Orifice plates, differential pressure flow measurement equipment, venturi tubes, ASME flow nozzles, restriction unions and more...
Over 50 Years of Differential Pressure Flow Metering Experience...

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ABOUT THE ORIFICE METER TUBES

Lengths meet AGA figure 3C at .75 Beta ratio (12" size at .73 Beta ratio). All sizes meet AGA figure 3A at .75 Beta ratio using line-type straightening vane. Available in carbon steel, stainless steel, PVC and other materials. Larger sizes and different pipe schedules are available - Seamless and honed pipe I.D. available upon request.

Sizing and Ordering Information:
1. Line size and schedule
2. Flange rating and type
3. Material and Orifice bore size
4. Pipe Ends (beveled, flanged, threaded, other)
5. Inspection and testing requirements. (NDE, X-Ray, Press Test, ANSI B31.1)
6. Requirement for additional taps for pressure/temp ports
7. Requirements for straightening valves.
8. Requirements for "honing " of pipe ID.
9. Requirement for MST calibration.

Common Sizes

Pipe I.D.

Pipe Size

"U"

"D"

"O"

S/40

S/80

1"
4"
2'
6'-0"
1.049"
0.957"

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"

* Other Sizes, Schedules, Ratings are available


Lambda Square, Inc 1-800-587-5423 Tel: 631-587-1000 Fax: 631-587-1011


Lambda Square, Inc. specializes
in the manufacture of differential pressure flow measurement equipment including venturi tubes, orifice plate and orifice flanges, meter tubes, orifice holding blocks, orifice restriction unions, sanitary plates, single and dual chamber fittings, ASME flow nozzles, manifolds, straightening vanes, elbow flow meters, seal pots and many other liquid, gas and steam control products.
Please contact Lambda Square with any questions concerning design and custom manufacture.
Copyright 1998-2018 Lambda Square, Inc. All rights reserved.



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