Sizes & Pressures
AV-ST™ Positive Pressure Disk Specifications Minimum/Maximum Pressure with Rating at 72° (
22°C)
| Disk Size |
Burst Pressure |
Relief Area |
| psig |
barg |
| in |
mm |
min |
max |
min |
max |
| 3 |
80 |
5 |
100 |
0.35 |
6.89 |
Full |
| 4 |
100 |
5 |
100 |
0.35 |
6.89 |
Full |
| 6 |
150 |
3 |
85 |
0.21 |
5.86 |
Full |
| 8 |
200 |
3 |
85 |
0.21 |
4.48 |
Full |
Note: Standard material 316 stainless steel. Other disk sizes, materials and burst pressures are available upon request - consult BS&B. FEP/PTFE liners are available on the process side of the disk in sizes from 2” (50mm) and above. Maximum temperature for 316ss is 750°F (399°C). Maximum temperature for FEP/PTFE is 500°F (260°C).
AV-ST™ Vacuum Relief Disk Specifications Minimum/Maximum Pressure with Rating at 72° (
22°C)
| Disk Size |
Burst Pressure |
Burst Range |
Relief Area |
| psig |
barg |
| in |
mm |
min |
max |
min |
max |
psig |
barg |
in2 |
cm2 |
| 3 |
80 |
3 |
10 |
0.2 |
0.7 |
± 0.5 |
± 0.4 |
2.0 |
13.1 |
| 4 |
100 |
2 |
10 |
0.1 |
0.7 |
± 0.5 |
± 0.4 |
3.6 |
23.1 |
| 6 |
150 |
1.5 |
6 |
0.1 |
0.4 |
± 0.3 |
± 0.02 |
5.9 |
38.3 |
| 8 |
200 |
1 |
6 |
0.1 |
0.4 |
± 0.3 |
± 0.02 |
9.3 |
59.7 |