Inch, DN, nominal comparison table | ||
Inch | DN | Nominal outside diameter (mm) |
1/8" | DN6 | φ9.5 |
1/4" | DN8 | φ13.5 |
3/8" | DN10 | φ16.5 |
1/2" | DN15 | φ20 |
3/4" | DN20 | φ25 |
1" | DN25 | φ32 |
1 1/4" | DN32 | φ40 |
1 1/2" | DN40 | φ50 |
2" | DN50 | φ63 |
2.5" | DN65 | φ75 |
3" | DN80 | φ90 |
4" | DN100 | φ110 |