Flange – Weld Neck, ANSI Class 2500, ASME B16.36, Orifice Weld Neck, Raised Face (in)
- Dimensions and tolerances in accordance with ANSI/ASME B16.36 for sizes 1/2″ to 24″.
- Carbon steel forgings in accordance with ASTM A105.
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
- All dimensions except “Thickness of Flange C sizes 1″ are the same as a Weld Neck.
- Approximate weight is based on a orifice flange union which is a set of flanges, plate not included.
| PipeSize
(NPS) |
OutsideDiameter of Flange
A |
Diameterof Raised Face
B |
Thicknessof Flange
C |
Diameterof Bore
D |
Diameterof Hub at Weld
H |
Diameterof Hub at Base
J |
Lengthof Hub
K |
Numberof Bolt Holes |
Diameterof Bolt Holes |
BoltCircle Diameter
P |
Approx.Weight per Union
(lb) |
| 1/2 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 3/4 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 1 |
6 1/4 |
2 |
1 1/2 |
* |
1.315 |
2 1/4 |
3 1/2 |
4 |
1 |
4 1/4 |
- |
| 1 1/4 |
7 1/4 |
2 1/2 |
1 1/2 |
* |
1.660 |
2 7/8 |
3 3/4 |
4 |
1 1/8 |
5 1/8 |
- |
| 1 1/2 |
8 |
2 7/8 |
1 3/4 |
* |
1.900 |
3 1/8 |
4 3/8 |
4 |
1 1/4 |
5 3/4 |
- |
| 2 |
9 1/4 |
3 5/8 |
2 |
* |
2.375 |
3 3/4 |
5 |
8 |
1 1/8 |
6 3/4 |
- |
| 2 1/2 |
10 1/2 |
4 1/8 |
2 1/4 |
* |
2.875 |
4 1/2 |
5 5/8 |
8 |
1 1/4 |
7 3/4 |
- |
| 3 |
12 |
5 |
2 5/8 |
* |
3.500 |
5 1/4 |
6 5/8 |
8 |
1 3/8 |
9 |
- |
| 3 1/2 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 4 |
14 |
6 3/16 |
3 |
* |
4.500 |
6 1/2 |
7 1/2 |
8 |
1 5/8 |
10 3/4 |
- |
| 5 |
16 1/2 |
7 5/16 |
3 5/8 |
* |
5.563 |
8 |
9 |
8 |
1 7/8 |
12 3/4 |
- |
| 6 |
19 |
8 1/2 |
4 1/4 |
* |
6.625 |
9 1/4 |
10 3/4 |
8 |
2 1/8 |
14 1/2 |
- |
| 8 |
21 3/4 |
10 5/8 |
5 |
* |
8.625 |
12 |
12 1/2 |
12 |
2 1/8 |
17 1/4 |
- |
| 10 |
26 1/2 |
12 3/4 |
6 1/2 |
* |
10.750 |
14 3/4 |
16 1/2 |
12 |
2 5/8 |
21 1/4 |
- |
| 12 |
30 |
15 |
7 1/4 |
* |
12.750 |
17 3/8 |
18 1/4 |
12 |
2 7/8 |
24 3/8 |
- |
- * To be specified by purchaser.
