Straightening Vane (in)

Written by Matt Milbury on . Posted in Accessory Datasheets

A straightening vane does exactly what its name says. When installed upstream with the correct pipe length, it will reduce the turbulence before entering a metering devise such as an orifice flanges or flow meter. This will insure a more accurate meter reading. One type can be held between two flanges and another secured inside the pipe with set screw on the outside.

Straightening Vane Standards

  • For fabrication see ASME MFC-3M

Straightening Vane Datasheet

Pipe Size (NPS)

Bundle TypePipe I.D.Length of Vane AO.D of VaneBO.D. of TubesWall Thickness of TubesNumber of TubesNumber and Size of ScrewsApprox. Weight Flange Type(lb)Approx. Weight Line Type (lb)Flange O.D.
2 I 2.067 6 1 31/32 21/32 .095 7 1 - 3/8 x 3/4 3 2 3 5/8
2 I 1.939 6 1 29/32 21/32 .095 7 1 - 3/8 x 3/4 3 2 3 5/8
3 II 3.068 8 2 7/8 19/32 .049 19 1 - 3/8 x 3/4 4 3 5
3 II 2.900 8 2 3/4 9/16 .049 19 1 - 3/8 x 3/4 4 3 5
4 II 4.026 10 3 31/32 13/16 .049 19 1 - 3/8 x 3/4 8 7 6 3/16
4 III 3.826 10 3 3/4 3/4 .049 19 1 - 3/8 x 1 8 7 6 3/16
5 II 5.047 12 4 27/32 1 .049 19 1 - 1/2 x 1 11 9 7 5/16
6 II 6.065 12 5 15/16 1 7/32 .049 19 1 - 1/2 x 1 21 19 8 1/2
6 II 5.761 12 5 5/8 1 5/32 .049 19 1 - 1/2 x 1 21 19 8 1/2
8 II 7.625 16 7 15/32 1 1/2 .065 19 1 - 1/2 x 1 37 35 10 5/8
8 II 7.981 16 7 29/32 1 5/8 .065 19 1 - 1/2 x 1 37 35 10 5/8
10 III 10.136 20 10 2 .083 19 1 - 1/2 x 1 57 54 12 3/4
10 II 10.020 20 9 3/4 2 .083 19 1 - 1/2 x 1 57 54 12 3/4
12 III 12.090 24 11 7/8 2 3/8 .083 19 2 - 1/2 x 1 1/4 81 77 15
12 III 11.374 24 11 1/4 2 1/4 .095 19 2 - 1/2 x 1 1/4 81 77 15
12 II 11.938 24 11 5/8 2 3/8 .083 19 2 - 1/2 x 1 1/4 81 77 15
14 III 13.25 28 13 1/8 2 5/8 .083 19 2 - 1/2 x 1 1/4 105 100 16 1/4
14 II 13 28 12 3/4 2 5/8 .083 19 2 - 1/2 x 1 1/4 105 100 16 1/4
16 III 15.250 30 15 3 .188 19 2 - 1/2 x 1 1/4 274 268 18 1/2
16 II 15.500 30 14 18/32 3 .188 19 2 - 1/2 x 1 1/4 274 268 18 1/2
18 II 16.876 36 16 23/32 3 7/16 .188 19 2 - 1/2 x 1 1/4 386 378 21
20 II 19.250 40 18 27/32 3 7/8 .188 19 2 - 1/2 x 1 1/4 477 468 23
24 II 23.250 48 23 1/8 4 3/4 .188 19 2 - 1/2 x 1 1/2 704 693 27 1/4
26 III 25.250 52 25 5 .188 19 2 - 1/2 x 1 1/2 814 796 29 1/2
30 III 29.250 60 28 3/4 5 3/4 .188 19 2 - 1/2 x 1 1/2 1295 1273 33 3/4
34 II 33.250 68 32 13/16 6 3/4 .250 19 2 - 1/2 x 1 1/2 1880 1860 38
36 III 35.250 72 35 7 .188 19 2 - 1/2 x 1 1/2 1582 1559 40 1/4