Concentric and Eccentric Reducers

MSS SP-75 ANSI B16.9 (in mm)

* Wellgrow’s standard.
Outside Diameter Outside Diameter
Nominal Pipe Size Nominal Pipe Size
at Bevel End-to-end at Bevel End-to-end
(NPS) (NPS)
Large End Small End Large End Small End
3/4 x 1/2 26.7 21.3 38.1 8 x 6 219.1 168.3 152.4
3/4 x 3/8 17.3 8 x 5 141.3
1 x 3/4 33.4 26.7 50.8 8 x 4 114.3
1 x 1/2 21.3 8 x 3-1/2 101.6
1-1/4 x 1 42.2 33.4 50.8 8 x 3 88.9
1-1/4 x 3/4 26.7 8 x 2-1/2 73.0
1-1/4 x 1/2 21.3 10 x 8 273.1 29.1 177.8
1-1/2 x 1-1/4 48.3 42.2 63.5 10 x 6 168.3
1-1/2 x 1 33.4 10 x 5 141.3
1-1/2 x 3/4 26.7 10 x 4 114.3
1-1/2 x 1/2 21.3 12 x 10 323.9 273.1 203.2
2 x 1-1/2 60.3 48.3 76.2 12 x 8 219.1
2 x 1-1/4 42.2 12 x 6 168.3
2 x 1 33.4 12 x 5 141.3
2 x 3/4 26.7 14 x 12 355.6 323.9 330.2
2-1/2 x 2 73.0 60.3 88.9 14 x 10 273.1
2-1/2 x 1-1/2 48.3 14 x 8 219.1
2-1/2 x 1-1/4 42.2 14 x 6 168.3
2-1/2 x 1 33.4 16 x 14 406.4 355.6 355.6
3 x 2-1/2 88.9 73.0 88.9 16 x 12 323.9
3 x 2 60.3 16 x 10 273.1
3 x 1-1/2 48.3 16 x 8 219.1
3 x 1-1/4 42.2 18 x 16 457.2 406.4 381.0
3-1/2 x 3 101.6 88.9 101.6 18 x 14 355.6
3-1/2 x 2-1/2 73.0 18 x 12 323.9
3-1/2 x 2 60.3 18 x 10 273.1
3-1/2 x 1-1/2 48.3 18 x 8 219.1
3-1/2 x 1-1/4 42.2 20 x 18 508.0 457.2 508.0
4 x 3-1/2 114.3 101.6 101.6 20 x 16 406.4
4 x 3 88.9 20 x 14 355.6
4 x 2-1/2 73.0 20 x 12 323.9
4 x 2 60.3 20 x 10 273.0
4 x 1-1/2 48.3 22 x 20 558.8 508.0 508.0
5 x 4 141.3 114.3 127.0 22 x 18 457.2
5 x 3-1/2 101.6 22 x 16 406.4
5 x 3 88.9 22 x 14 355.6
5 x 2-1/2 73.0 22 x 12 323.8
5 x 2 60.3 24 x 22 609.6 558.8 508.0
6 x 5 168.3 141.3 139.7 24 x 20 508.0
6 x 4 114.3 24 x 18 457.2
6 x 3-1/2 101.6 24 x 16 406.4
6 x 3 88.9 24 x 16 355.6
6 x 2-1/2 73.0 24 x 16 323.8

Tel: 886-4-23112576 Fax: 886-4-23112578 E-mail: wellgrow@ms18.hinet.net

 Concentric and Eccentric Reducers

MSS SP-75 ANSI B16.9 (in mm)

* Wellgrow’s standard.
Nominal Pipe Outside Diameter Outside Diameter
Nominal Pipe Size
Size at Bevel End-to-end at Bevel End-to-end
(NPS)
(NPS) Large End Small End Large End Small End
26 x 24 660.4 609.6 609.6 40 x 38 1016.0 965.0 609.6
26 x 22 558.8 40 x 36 914.0
26 x 20 508.0 40 x 34 864.0
26 x 18 457.2 40 x 32 813.0
26 x 16 406.4 40 x 30 762.0
26 x 14 355.6 40 x 28 711.0
28 x 26 711.2 660.4 609.6 42 x 40 1067.0 1016.0 609.6
28 x 24 609.6 42 x 38 965.0
28 x 22 559.0 42 x 36 914.4
28 x 20 508.0 42 x 34 863.6
28 x 18 457.2 42 x 32 812.8
28 x 16 406.4 42 x 30 762.0
28 x 14 355.6 42 x 28 711.0
30 x 28 762.0 711.2 609.6 44 x 42 1117.6 1066.8 609.6
30 x 26 660.4 44 x 40 1016.0
30 x 24 609.6 44 x 38 965.2
30 x 22 559.0 44 x 36 914.4
30 x 20 508.0 44 x 34 864.0
30 x 18 457.0 44 x 32 813.0
30 x 16 406.4 46 x 44 1168.4 1117.6 711.2
30 x 14 355.6 46 x 42 1066.8
32 x 30 813.0 762.0 609.6 46 x 40 1016.0
32 x 28 711.0 46 x 38 965.2
32 x 26 660.0 46 x 36 914.0
32 x 24 610.0 46 x 34 864.0
32 x 22 559.0 48 x 46 1219.2 1168.4 711.2
32 x 20 508.0 48 x 44 1117.6
34 x 32 863.6 812.8 609.6 48 x 42 1066.8
34 x 30 762.0 48 x 40 1016.0
34 x 28 711.0 48 x 38 965.0
34 x 26 711.2 48 x 36 914.0
34 x 24 660.4 52 x 48 1321.0 1219.0 711.2
34 x 22 559.0 52 x 46 1168.0
36 x 34 914.0 864.0 609.6 52 x 44 1118.0
36 x 32 813.0 52 x 42 1067.0
36 x 30 762.0 52 x 40 1016.0
36 x 28 711.0 56 x 52 1422.0 1321.0 711.2
36 x 26 660.0 56 x 48 1219.0
36 x 24 610.0 56 x 44 1118.0
36 x 22 559.0 52 x 40 1016.0
38 x 36 965.0 914.0 609.6 60 x 56 1524.0 1422.0 711.2
38 x 34 864.0 60 x 52 1321.0
38 x 32 813.0 60 x 48 1219.0
38 x 30 762.0 60 x 44 1118.0
38 x 28 711.0
38 x 26 660.0
38 x 24 610.0

Tel: 886-4-23112576 Fax: 886-4-23112578 E-mail: wellgrow@ms18.hinet.net