Dimensions for NPS 12 Class 400 generic flange
| Field | Value | Notes |
|---|---|---|
| Outside Diameter of Flange (O) | 20-1/2" | |
| Minimum Thickness of Flange (tf) | 2-1/4" | |
| Diameter of Bolt Circle (W) | 17-3/4" |
Flange dimensions in seconds.
Download Flange Bolt Chart.
| Field | Value | Notes |
|---|---|---|
| Outside Diameter of Flange (O) | 20-1/2" | |
| Minimum Thickness of Flange (tf) | 2-1/4" | |
| Diameter of Bolt Circle (W) | 17-3/4" |