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SINGLE PIECE DISCS, SERIES 3 AND REVERSE BURST, SERIES 6
+ DESIGN CRITERIA AND DATA
SERIES 3 |
Single
Piece Discs for Class 150 ANSI Flanges |
Typical Installation |
Std.
Ratings 5, 10, 15, 20, 25, 30, 40, 50, 75, 100, 125, 150 PSIG |
|
Class
300 ANSI Flanges |
Std.
Ratings 175, 200, 225, 250, 300 PSIG |
| Nom. |
Dimensions
in Inches |
| Pipe |
150# |
150/300# |
150# |
300# |
300# |
| Size |
A |
B |
C |
A |
C |
| 1 |
2-1/2 |
1 |
7/8 |
2-3/4 |
1 |
| 1-1/2 |
3-1/4 |
1-1/2 |
7/8 |
3-5/8 |
1 |
| 2 |
4 |
2 |
7/8 |
4-1/4 |
1 |
| SERIES 6 |
3 |
5-1/4 |
3 |
7/8 |
5-3/4 |
1-1/4 |
| 4 |
6-3/4 |
4 |
7/8 |
7 |
1-1/4 |
Typical Installation |
6 |
8-5/8 |
6 |
7/8 |
9-3/4 |
1-3/4 |
|
8 |
10-7/8 |
8 |
1-1/8 |
12 |
2-1/4 |
| 10 |
13-1/4 |
10 |
1-1/2 |
|
|
| 12 |
16 |
12 |
2 |
|
|
| 14 |
17-5/8 |
13-1/4 |
2-1/4 |
|
|
| 16 |
20-1/8 |
15-1/4 |
2-1/2 |
|
|
| 18 |
21-1/2 |
17-1/4 |
2-3/4 |
|
|
| 20 |
23-3/4 |
19-1/4 |
3 |
|
|
| 24 |
28-1/8 |
23-1/4 |
3 |
|
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+ LOW PRESSURE BURST DISC
| Size |
Lowest Burst Ratings
Available |
Low Pressure Disc
Accuracy |
| 1" |
15 psig |
+/- 5% |
| 1-1/2" |
10 psig |
+/- 0.75 psig |
| 2" |
4 psig |
+/- 0.75 psig |
| 3" |
3 psig |
+/- 0.75 psig |
| 4" - 6" |
2 psig |
+/- 0.75 psig |
| 8" - 10" |
1.0 psig |
+0.75 / -0 psig |
| 12" - 24" |
0.5 psig |
+0.75 / -0 psig |
+ TYPICAL INSTALLATION OF SINGLE PIECE DISCS (SERIES 3) AND REVERSE BURSTING DISCS (SERIES 6)
Refer to diagram above
+ IMPORTANT NOTES:
- Discs are designed to fit within the bolt circle of 150# or 300# ANSI flanges. Make sure disc is properly centered between flanges during installation.
- It is important to install the disc in the correct flow direction. This is noted by an arrow on the stainless steel tag.
- Flange faces must be parallel to each other in order to eliminate excessive bolting forces when installing disc..
- The vent side gasket is furnished with the disc because the gasket material and inside diameter of the disc are critical to the burst disc accuracy.
- The pressure (process) side gasket, furnished by the customer, must be compatible with the process fluid and therefore, the preferred type is a standard, 150# ANSI, TFE envelope gasket with a soft 1/8" thick filler. Do not use a gasket having a metal filler.
- Burst pressure shown on stainless steel tag has been established at ambient temperature. Elevated temperatures may cause a reduction in the actual burst pressure of the disc.
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Graphite Heat Exchangers