EG-F-031
ASME B16.5 (ANSI) Class 900 Weld Neck Flanges
Butt-weld connection with a tapered hub. Specify the bore to suit the connected pipe.
| Series | ASME B16.5 (ANSI) |
| Class | 900 |
| Size range | NPS 1/2–24 |
| Size entries | 19 |
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-031-001 | 1/2 | 4.75 in | 0.88 in | 1.38 in | 2.38 in | 1.50 in | Specified by purchaser | 5 lb | 3.25 in | 4 | 0.88 in |
| EG-F-031-002 | 3/4 | 5.13 in | 1.00 in | 1.69 in | 2.75 in | 1.75 in | Specified by purchaser | 6 lb | 3.50 in | 4 | 0.88 in |
| EG-F-031-003 | 1 | 5.88 in | 1.13 in | 2.00 in | 2.88 in | 2.06 in | Specified by purchaser | 9 lb | 4.00 in | 4 | 1.00 in |
| EG-F-031-004 | 1 1/4 | 6.25 in | 1.13 in | 2.50 in | 2.88 in | 2.50 in | Specified by purchaser | 10 lb | 4.38 in | 4 | 1.00 in |
| EG-F-031-005 | 1 1/2 | 7.00 in | 1.25 in | 2.88 in | 3.25 in | 2.75 in | Specified by purchaser | 13 lb | 4.88 in | 4 | 1.13 in |
| EG-F-031-006 | 2 | 8.50 in | 1.50 in | 3.63 in | 4.00 in | 4.13 in | Specified by purchaser | 25 lb | 6.50 in | 8 | 1.00 in |
| EG-F-031-007 | 2 1/2 | 9.63 in | 1.63 in | 4.13 in | 4.06 in | 4.88 in | Specified by purchaser | 36 lb | 7.50 in | 8 | 1.13 in |
| EG-F-031-008 | 3 | 9.50 in | 1.50 in | 5.00 in | 4.00 in | 5.00 in | Specified by purchaser | 31 lb | 7.50 in | 8 | 1.00 in |
| EG-F-031-009 | 4 | 11.50 in | 1.75 in | 6.19 in | 4.50 in | 6.25 in | Specified by purchaser | 53 lb | 9.25 in | 8 | 1.25 in |
| EG-F-031-010 | 5 | 13.75 in | 2.00 in | 7.31 in | 5.00 in | 7.50 in | Specified by purchaser | 86 lb | 11.00 in | 8 | 1.38 in |
| EG-F-031-011 | 6 | 15.00 in | 2.19 in | 8.50 in | 5.50 in | 9.25 in | Specified by purchaser | 110 lb | 12.50 in | 12 | 1.25 in |
| EG-F-031-012 | 8 | 18.50 in | 2.50 in | 10.63 in | 6.38 in | 11.75 in | Specified by purchaser | 175 lb | 15.50 in | 12 | 1.50 in |
| EG-F-031-013 | 10 | 21.50 in | 2.75 in | 12.75 in | 7.25 in | 14.50 in | Specified by purchaser | 260 lb | 18.50 in | 16 | 1.50 in |
| EG-F-031-014 | 12 | 24.00 in | 3.13 in | 15.00 in | 7.88 in | 16.50 in | Specified by purchaser | 325 lb | 21.00 in | 20 | 1.50 in |
| EG-F-031-015 | 14 | 25.25 in | 3.38 in | 16.25 in | 8.38 in | 17.75 in | Specified by purchaser | 400 lb | 22.00 in | 20 | 1.63 in |
| EG-F-031-016 | 16 | 27.75 in | 3.50 in | 18.50 in | 8.50 in | 20.00 in | Specified by purchaser | 495 lb | 24.25 in | 20 | 1.75 in |
| EG-F-031-017 | 18 | 31.00 in | 4.00 in | 21.00 in | 9.00 in | 22.25 in | Specified by purchaser | 680 lb | 27.00 in | 20 | 2.00 in |
| EG-F-031-018 | 20 | 33.75 in | 4.25 in | 23.00 in | 9.75 in | 24.50 in | Specified by purchaser | 830 lb | 29.50 in | 20 | 2.13 in |
| EG-F-031-019 | 24 | 41.00 in | 5.50 in | 27.25 in | 11.50 in | 29.50 in | Specified by purchaser | 1500 lb | 35.50 in | 20 | 2.63 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.