EG-F-018
ASME B16.5 (ANSI) Class 300 Lap Joint Flanges
Backing flange used with a matching stub end. The bore radius and stub-end geometry must be coordinated.
| Series | ASME B16.5 (ANSI) |
| Class | 300 |
| 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) | Length through hub (Y) | Hub OD (X) | Radius (r) | Bore (B) | Approx. weight | Bolt circle (C) | Bolt holes | Hole diameter |
|---|---|---|---|---|---|---|---|---|---|---|---|
| EG-F-018-001 | 1/2 | 3.75 in | 0.56 in | 0.88 in | 1.50 in | 0.13 in | 0.90 in | 2 lb | 2.63 in | 4 | 0.63 in |
| EG-F-018-002 | 3/4 | 4.63 in | 0.63 in | 1.00 in | 1.88 in | 0.13 in | 1.11 in | 3 lb | 3.25 in | 4 | 0.75 in |
| EG-F-018-003 | 1 | 4.88 in | 0.69 in | 1.06 in | 2.13 in | 0.13 in | 1.38 in | 3 lb | 3.50 in | 4 | 0.75 in |
| EG-F-018-004 | 1 1/4 | 5.25 in | 0.75 in | 1.06 in | 2.50 in | 0.19 in | 1.72 in | 4 lb | 3.88 in | 4 | 0.75 in |
| EG-F-018-005 | 1 1/2 | 6.13 in | 0.81 in | 1.19 in | 2.75 in | 0.25 in | 1.97 in | 6 lb | 4.50 in | 4 | 0.88 in |
| EG-F-018-006 | 2 | 6.50 in | 0.88 in | 1.31 in | 3.31 in | 0.31 in | 2.46 in | 7 lb | 5.00 in | 8 | 0.75 in |
| EG-F-018-007 | 2 1/2 | 7.50 in | 1.00 in | 1.50 in | 3.94 in | 0.31 in | 2.97 in | 10 lb | 5.88 in | 8 | 0.88 in |
| EG-F-018-008 | 3 | 8.25 in | 1.13 in | 1.69 in | 4.63 in | 0.38 in | 3.60 in | 13 lb | 6.63 in | 8 | 0.88 in |
| EG-F-018-009 | 3 1/2 | 9.00 in | 1.19 in | 1.75 in | 5.25 in | 0.38 in | 4.10 in | 17 lb | 7.25 in | 8 | 0.88 in |
| EG-F-018-010 | 4 | 10.00 in | 1.25 in | 1.88 in | 5.75 in | 0.44 in | 4.60 in | 22 lb | 7.88 in | 8 | 0.88 in |
| EG-F-018-011 | 5 | 11.00 in | 1.38 in | 2.00 in | 7.00 in | 0.44 in | 5.69 in | 28 lb | 9.25 in | 8 | 0.88 in |
| EG-F-018-012 | 6 | 12.50 in | 1.44 in | 2.06 in | 8.13 in | 0.50 in | 6.75 in | 39 lb | 10.63 in | 12 | 0.88 in |
| EG-F-018-013 | 8 | 15.00 in | 1.63 in | 2.44 in | 10.25 in | 0.50 in | 8.75 in | 58 lb | 13.00 in | 12 | 1.00 in |
| EG-F-018-014 | 10 | 17.50 in | 1.88 in | 3.75 in | 12.63 in | 0.50 in | 10.92 in | 91 lb | 15.25 in | 16 | 1.13 in |
| EG-F-018-015 | 12 | 20.50 in | 2.00 in | 4.00 in | 14.75 in | 0.50 in | 12.92 in | 140 lb | 17.75 in | 16 | 1.25 in |
| EG-F-018-016 | 14 | 23.00 in | 2.13 in | 4.38 in | 16.75 in | 0.50 in | 14.18 in | 190 lb | 20.25 in | 20 | 1.25 in |
| EG-F-018-017 | 16 | 25.50 in | 2.25 in | 4.75 in | 19.00 in | 0.50 in | 16.19 in | 250 lb | 22.50 in | 20 | 1.38 in |
| EG-F-018-018 | 18 | 28.00 in | 2.38 in | 5.13 in | 21.00 in | 0.50 in | 18.20 in | 295 lb | 24.75 in | 24 | 1.38 in |
| EG-F-018-019 | 20 | 30.50 in | 2.50 in | 5.50 in | 23.13 in | 0.50 in | 20.25 in | 370 lb | 27.00 in | 24 | 1.38 in |
| EG-F-018-020 | 22 | 33.00 in | 2.63 in | 5.75 in | 25.25 in | 0.50 in | 22.25 in | 435 lb | 29.25 in | 24 | 1.63 in |
| EG-F-018-021 | 24 | 36.00 in | 2.75 in | 6.00 in | 27.63 in | 0.50 in | 24.25 in | 550 lb | 32.00 in | 24 | 1.63 in |
Selection notes
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.