ANSI Flange Dimensions
(150# & 300#)
|
150 lb. STANDARD |
|
Nominal
Pipe Size |
Outside |
Drill Template |
|
Diameter
Flange |
Flange
Thickness |
No.
Holes |
Diam.
Bolts |
Bolt
Circle |
|
1/2 |
3-1/2 |
7/16 |
4 |
1/2 |
2-3/8 |
|
3/4 |
3-7/8 |
1/2 |
4 |
1/2 |
2-3/4 |
|
1 |
4-1/4 |
9/16 |
4 |
1/2 |
3-1/8 |
|
1-1/4 |
4-5/8 |
5/8 |
4 |
1/2 |
3-1/2 |
|
1-1/2 |
5 |
11/16 |
4 |
1/2 |
3-7/8 |
|
2 |
6 |
3/4 |
4 |
5/8 |
4-3/4 |
|
2-1/2 |
7 |
7/8 |
4 |
5/8 |
5-1/2 |
|
3 |
7-1/2 |
15/16 |
4 |
5/8 |
6 |
|
3-1/2 |
8-1/2 |
15/16 |
8 |
5/8 |
7 |
|
4 |
9 |
15/16 |
8 |
5/8 |
7-1/2 |
|
5 |
10 |
15/16 |
8 |
3/4 |
8-1/2 |
|
6 |
11 |
1 |
8 |
3/4 |
9-1/2 |
|
8 |
13-1/2 |
1-1/8 |
8 |
3/4 |
11-3/4 |
|
10 |
16 |
1-3/16 |
12 |
7/8 |
14-1/4 |
|
12 |
19 |
1-1/4 |
12 |
7/8 |
17 |
|
300 lb. STANDARD |
|
Nominal
Pipe Size |
Outside |
Drill Template |
|
Diameter
Flange |
Flange
Thickness |
No.
Holes |
Diam.
Bolts |
Bolt
Circle |
|
1/2 |
3-3/4 |
9/16 |
4 |
1/2 |
2-5/8 |
|
3/4 |
4-5/8 |
5/8 |
4 |
5/8 |
3-1/4 |
|
1 |
4-7/8 |
11/16 |
4 |
5/8 |
3-1/2 |
|
1-1/4 |
5-1/4 |
3/4 |
4 |
5/8 |
3-7/8 |
|
1-1/2 |
6-1/8 |
13/16 |
4 |
3/4 |
4-1/2 |
|
2 |
6-1/2 |
7/8 |
8 |
5/8 |
5 |
|
2-1/2 |
7-1/2 |
1 |
8 |
3/4 |
5-7/8 |
|
3 |
8-1/4 |
1-1/8 |
8 |
3/4 |
6-5/8 |
|
3-1/2 |
9 |
1-3/16 |
8 |
3/4 |
7-1/4 |
|
4 |
10 |
1-1/4 |
8 |
3/4 |
7-7/8 |
|
5 |
11 |
1-3/8 |
8 |
3/4 |
9-1/4 |
|
6 |
12-1/2 |
1-7/16 |
12 |
3/4 |
10-5/8 |
|
8 |
15 |
1-5/8 |
12 |
7/8 |
13 |
|
10 |
17-1/2 |
1-7/8 |
16 |
1 |
15-1/4 |
|
12 |
20-1/2 |
2 |
16 |
1-1/8 |
17-3/4 |
Just because the flange is a "150 lb" flange, that doesn't mean that it's only rated to 150 psi. The pressure rating of flanges is dependent on temperature. See the chart below for the pressure ratings at different temperatures.
|
Maximum Allowable non-shock Pressure (psig) |
|
Temperature
(oF) |
Pressure Class (lb) |
|
150 |
300 |
400 |
600 |
900 |
1500 |
2500 |
|
Hydrostatic Test Pressure (psig) |
|
450 |
1125 |
1500 |
2225 |
3350 |
5575 |
9275 |
|
-20 to 100 |
285 |
740 |
990 |
1480 |
2220 |
3705 |
6170 |
|
200 |
260 |
675 |
900 |
1350 |
2025 |
3375 |
5625 |
|
300 |
230 |
655 |
875 |
1315 |
1970 |
3280 |
5470 |
|
400 |
200 |
635 |
845 |
1270 |
1900 |
3170 |
5280 |
|
500 |
170 |
600 |
800 |
1200 |
1795 |
2995 |
4990 |
|
600 |
140 |
550 |
730 |
1095 |
1640 |
2735 |
4560 |
|
650 |
125 |
535 |
715 |
1075 |
1610 |
2685 |
4475 |
|
700 |
110 |
535 |
710 |
1065 |
1600 |
2665 |
4440 |
|
750 |
95 |
505 |
670 |
1010 |
1510 |
2520 |
4200 |
|
800 |
80 |
410 |
550 |
825 |
1235 |
2060 |
3430 |
|
850 |
65 |
270 |
355 |
535 |
805 |
1340 |
2230 |
|
900 |
50 |
170 |
230 |
345 |
515 |
860 |
1430 |
|
950 |
35 |
105 |
140 |
205 |
310 |
515 |
860 |
|
1000 |
20 |
50 |
70 |
105 |
155 |
260 |
430 |
| 
