EG-F-020
ASME B16.5 (ANSI) Class 400 Weld Neck Flanges
Butt-weld connection with a tapered hub. Specify the bore to suit the connected pipe.
| Series | ASME B16.5 (ANSI) |
| Class | 400 |
| Size range | NPS 1/2–24 |
| Size entries | 21 |
Representative form. Refer to the size table for the selected dimensions.
Dimension key
Dimensions & drilling
in = inches · lb = pounds
Scroll the table horizontally to see all dimensions. Approximate weights are for reference.
| Catalogue ref. | Nominal pipe size (NPS) | OD (O) | Thickness (T) | RF diameter (R) | Length through hub (Y) | Hub OD (X) | Bore (B) | Approx. weight | Bolt circle (C) | Bolt holes | Hole diameter |
|---|---|---|---|---|---|---|---|---|---|---|---|
| EG-F-020-001 | 1/2 | 3.75 in | 0.56 in | 1.38 in | 2.06 in | 1.50 in | Specified by purchaser | 2 lb | 2.63 in | 4 | 0.63 in |
| EG-F-020-002 | 3/4 | 4.63 in | 0.63 in | 1.69 in | 2.25 in | 1.88 in | Specified by purchaser | 4 lb | 3.25 in | 4 | 0.75 in |
| EG-F-020-003 | 1 | 4.88 in | 0.69 in | 2.00 in | 2.44 in | 2.13 in | Specified by purchaser | 4 lb | 3.50 in | 4 | 0.75 in |
| EG-F-020-004 | 1 1/4 | 5.25 in | 0.81 in | 2.50 in | 2.63 in | 2.50 in | Specified by purchaser | 6 lb | 3.88 in | 4 | 0.75 in |
| EG-F-020-005 | 1 1/2 | 6.13 in | 0.88 in | 2.88 in | 2.75 in | 2.75 in | Specified by purchaser | 8 lb | 4.50 in | 4 | 0.88 in |
| EG-F-020-006 | 2 | 6.50 in | 1.00 in | 3.63 in | 2.88 in | 3.31 in | Specified by purchaser | 12 lb | 5.00 in | 8 | 0.75 in |
| EG-F-020-007 | 2 1/2 | 7.50 in | 1.13 in | 4.13 in | 3.13 in | 3.94 in | Specified by purchaser | 18 lb | 5.88 in | 8 | 0.88 in |
| EG-F-020-008 | 3 | 8.25 in | 1.25 in | 5.00 in | 3.25 in | 4.63 in | Specified by purchaser | 23 lb | 6.63 in | 8 | 0.88 in |
| EG-F-020-009 | 3 1/2 | 9.00 in | 1.38 in | 5.50 in | 3.38 in | 5.25 in | Specified by purchaser | 26 lb | 7.25 in | 8 | 1.00 in |
| EG-F-020-010 | 4 | 10.00 in | 1.38 in | 6.19 in | 3.50 in | 5.75 in | Specified by purchaser | 35 lb | 7.88 in | 8 | 1.00 in |
| EG-F-020-011 | 5 | 11.00 in | 1.50 in | 7.31 in | 4.00 in | 7.00 in | Specified by purchaser | 43 lb | 9.25 in | 8 | 1.00 in |
| EG-F-020-012 | 6 | 12.50 in | 1.63 in | 8.50 in | 4.06 in | 8.13 in | Specified by purchaser | 57 lb | 10.63 in | 12 | 1.00 in |
| EG-F-020-013 | 8 | 15.00 in | 1.88 in | 10.63 in | 4.63 in | 10.25 in | Specified by purchaser | 89 lb | 13.00 in | 12 | 1.13 in |
| EG-F-020-014 | 10 | 17.50 in | 2.13 in | 12.75 in | 4.88 in | 12.63 in | Specified by purchaser | 125 lb | 15.25 in | 16 | 1.25 in |
| EG-F-020-015 | 12 | 20.50 in | 2.25 in | 15.00 in | 5.38 in | 14.75 in | Specified by purchaser | 175 lb | 17.75 in | 16 | 1.38 in |
| EG-F-020-016 | 14 | 23.00 in | 2.38 in | 16.25 in | 5.88 in | 16.75 in | Specified by purchaser | 230 lb | 20.25 in | 20 | 1.38 in |
| EG-F-020-017 | 16 | 25.50 in | 2.50 in | 18.50 in | 6.00 in | 19.00 in | Specified by purchaser | 295 lb | 22.50 in | 20 | 1.50 in |
| EG-F-020-018 | 18 | 28.00 in | 2.63 in | 21.00 in | 6.50 in | 21.00 in | Specified by purchaser | 350 lb | 24.75 in | 24 | 1.50 in |
| EG-F-020-019 | 20 | 30.50 in | 2.75 in | 23.00 in | 6.63 in | 23.13 in | Specified by purchaser | 425 lb | 27.00 in | 24 | 1.63 in |
| EG-F-020-020 | 22 | 33.00 in | 2.88 in | 25.25 in | 6.75 in | 25.25 in | Specified by purchaser | 505 lb | 29.25 in | 24 | 1.75 in |
| EG-F-020-021 | 24 | 36.00 in | 3.00 in | 27.25 in | 6.88 in | 27.63 in | Specified by purchaser | 620 lb | 32.00 in | 24 | 1.88 in |
Selection notes
Facing in this dimensional series: 1/4 in raised face (RF).
A flat face (FF) can be specified with the inquiry.
Class designations are not direct pressure values. Confirm material grade, temperature, facing and the applicable standard edition before ordering.
Specify your flange.
Send the standard, class, size, material and quantity. Add a drawing for custom requirements.