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Butterfly valve size and pipe size comparison table

1,757 views Source: VALTEC China Valve Manufacture CO.,LTD

As we all know, there is an inevitable connection between the diameter of the butterfly valve and the size of the pipeline. Generally speaking, the diameter (outer diameter) matches the butterfly valve. Butterfly valve diameter needs to be calculated according to the actual parameters. Generally speaking, the pipeline will be larger, but the actual valve will be smaller, which mainly depends on the flow rate to be controlled by the valve position, while the pipeline size only needs to have enough circulation capacity.

Butterfly valve size and pipe size

1. Comparison table between pipe size and butterfly valve size and inch:

Diameter inches DN-Nominal Diameter (mm) Outside Diameter of Pipeline (mm)
1/4″ 8 13.7
3/8″ 10 17.14
1/2″ 15 21.3
3/4″ 20 26.7
1″ 25 33.4
1.2″ 32 42.2
1.5″ 40 48.3
2″ 50 60.3
2.5″ 65 73
3″ 80 88.9
4″ 100 114.3
5″ 125 141.3
6″ 150 168.3
8″ 200 219.1
10″ 250 273
12″ 300 323.8
14″ 350 355.6
16″ 400 406.4

2. Butterfly valve size DN (nominal diameter) corresponding to the pipe outer diameter ф (mm):

Nominal Diameter (DN) Outside Diameter of Pipeline ф
(small outside diameter)
Outside Diameter of Pipeline ф (large outside diameter)
15 18 22
20 25 27
25 32 34
32 38 42
40 45 48
50 57 60
65 73 76
80 89 89
100 108 114
125 133 140
150 159 168
200 219 219
250 273 273
300 324 325
350 360 377
400 406 426
450 457 480
500 508 530
600 610 630
700 720  
800 820  
900 920  
1000 1020  
1200 1220  
1400 1420  
1600 1620  
1800 1820  
2000 2020  

Want to know more butterfly valve information, consult the latest butterfly valve price, butterfly valve selection, contact VALTECCN butterfly valve supplier and manufacturer immediately

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