Flange – Weld Neck, ANSI Class 900, 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.
| Pipe Size(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 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 1 1/4 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 1 1/2 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 2 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 2 1/2 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 3 |
9 1/2 |
5 |
1 1/2 |
* |
3.500 |
5 |
4 |
8 |
1 |
7 1/2 |
79 |
| 3 1/2 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
| 4 |
11 1/2 |
6 3/16 |
1 3/4 |
* |
4.500 |
6 1/4 |
4 1/2 |
8 |
1 1/4 |
9 1/4 |
129 |
| 5 |
13 3/4 |
7 5/16 |
2 |
* |
5.563 |
7 1/2 |
5 |
8 |
1 3/8 |
11 |
207 |
| 6 |
15 |
8 1/2 |
2 3/16 |
* |
6.625 |
9 1/4 |
5 1/2 |
12 |
1 1/4 |
12 1/2 |
263 |
| 8 |
18 1/2 |
10 5/8 |
2 1/2 |
* |
8.625 |
11 3/4 |
6 3/8 |
12 |
1 1/2 |
15 1/2 |
445 |
| 10 |
21 1/2 |
12 3/4 |
2 3/4 |
* |
10.750 |
14 1/2 |
7 1/4 |
16 |
1 1/2 |
18 1/2 |
634 |
| 12 |
24 |
15 |
3 1/8 |
* |
12.750 |
16 1/2 |
7 7/8 |
20 |
1 1/2 |
21 |
872 |
- * To be specified by purchaser.
