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Theoretical venting capacities for burst discs
The values shown are calculated in SCFM air at standard conditions. capacities are give for discs with and without vacuum supports.
Additional appropriate safety factors are left to the customer in determination of proper disc size for his application.
+ Without Vacuum Support
Burst Rating |
Disc Diameter |
PSIG |
1" |
1-1/2" |
2" |
3" |
4" |
6" |
8" |
10" |
12" |
| 5 |
|
|
1,090 |
2,470 |
4,350 |
9,780 |
17,600 |
27,600 |
39,200 |
| 10 |
|
750 |
1,390 |
3,130 |
5,560 |
12,500 |
22,100 |
34,000 |
48,400 |
| 15 |
400 |
900 |
1,690 |
3,820 |
6,790 |
15,200 |
26,300 |
41,500 |
59,000 |
| 20 |
470 |
1,060 |
1,990 |
4,500 |
7,960 |
17,900 |
30,700 |
48,500 |
68,500 |
| 25 |
540 |
1,230 |
2,290 |
5,170 |
9,150 |
20,600 |
35,100 |
55,100 |
78,200 |
| 30 |
610 |
1,370 |
2,590 |
5,840 |
10,300 |
23,300 |
39,500 |
62,000 |
88,000 |
| 40 |
740 |
1,680 |
3,190 |
7,190 |
11,900 |
28,700 |
48,500 |
76,000 |
107,500 |
| 50 |
880 |
1,990 |
3,520 |
8,520 |
14,100 |
34,000 |
57,000 |
89,500 |
127,000 |
| 60 |
1,010 |
2,300 |
4,100 |
10,100 |
16,300 |
39,300 |
65,600 |
104,000 |
147,000 |
| 70 |
1,150 |
2,600 |
4,640 |
10,400 |
18,500 |
41,500 |
74,600 |
117,000 |
167,000 |
| 75 |
1,220 |
2,750 |
4,900 |
11,100 |
19,500 |
44,000 |
78,900 |
124,500 |
175,500 |
| 80 |
1,290 |
2,900 |
5,150 |
11,700 |
20,600 |
46,500 |
83,200 |
132,000 |
184,000 |
| 90 |
1,420 |
3,220 |
5,700 |
12,800 |
22,700 |
51,800 |
92,000 |
145,000 |
204,000 |
| 100 |
1,560 |
3,520 |
6,220 |
14,100 |
24,700 |
56,200 |
100,000 |
159,000 |
223,000 |
| 125 |
1,900 |
4,300 |
7,700 |
17,400 |
31,000 |
69,500 |
124,000 |
194,000 |
278,000 |
| 150 |
2,300 |
5,200 |
9,300 |
21,000 |
37,100 |
84,000 |
149,000 |
229,000 |
328,000 |
+ With Vacuum Bar Support
| Burst Rating |
Disc Diameter |
| PSIG |
1" |
1-1/2" |
2" |
3" |
4" |
6" |
8" |
10" |
12" |
| 5 |
|
|
687 |
1,827 |
3,132 |
5,868 |
12,672 |
20,120 |
27,600 |
| 10 |
|
472 |
876 |
2,316 |
4,003 |
7,700 |
15,910 |
24,800 |
35,330 |
| 15 |
|
567 |
1,065 |
2,827 |
4,700 |
9,420 |
18,940 |
30,250 |
43,100 |
| 20 |
|
668 |
1,253 |
3,330 |
5,430 |
11,250 |
22,100 |
35,400 |
50,000 |
+ With Vacuum Dial Support
| Burst Rating |
Disc Diameter |
| PSIG |
1" |
1-1/2" |
2" |
3" |
4" |
6" |
8" |
10" |
12" |
| 5 |
|
|
380 |
815 |
1,522 |
3,422 |
6,160 |
9,660 |
13,720 |
| 10 |
|
225 |
480 |
1,032 |
1,946 |
4,375 |
7,735 |
11,900 |
16,940 |
| 15 |
|
270 |
590 |
1,260 |
2,376 |
5,320 |
9,205 |
14,525 |
20,650 |
CAUTION: Vent lines must be secure and suitable for dynamic loads resulting from venting liquids or gases. Membrane fragmants can discharge at high velocity and a safety shield may be required.
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Graphite Heat Exchangers