The original rupture disk (bursting disc) manufacturer shaping the growth of pressure relief devices for over 80 years.


Composite Bursting Disc
Type D

The Type D Composite Bursting Disc consists of a slotted metal top section and a plastic or metal seal membrane located at the concave or pressure side of the top section. The top section is the pressure zone and controls bursting rating of disc. Since the top section has open slots, the seal isolates it from process media and prevents leakage. Like the Type B Solid Metal Bursting Disc, the Type D composite disc is dome-shaped with an angular seating arrangement. Pressure is applied to dished or concave side, subjecting disc metal to tension loading.

Seal material in the Type D bursting disc is thin and subject to damage by a foreign substance on seating surfaces or flanges. It may be desirable to use a heavier gauge metal ring permanently mounted to the seat area of the plastic or metal seal. This assembly is called Type DR bursting disc. When two rings are used, the assembly is called Type DRR bursting discs.

When vacuum is involved-in any amount the seal MUST have a structural support. Standard support for Type D discs is the same as that used with Type B discs, a domed structure with pie shaped segments or a laser cut single piece construction, depending upon size and pressure rating. Support is mated to upstream or pressure side of seal. All three components are permanently attached. This assembly is called Type DV bursting disc.

When a DV disc is specified and high vacuum is involved-in the micron range a soft gasket ring should be applied to the seat of support on the process side. This assembly is called Type DSV bursting disc. If a DR ring is also attached to the atmospheric side of the disc, the assembly is called Type DRSV.

When it is desirable to protect the metal top section of a Type D disc from contaminants in a valve, header, piping, or atmosphere; a plastic liner can be attached on the convex side. This assembly is called a PLD bursting disc. A plastic liner covering and isolating a built-in support from process media becomes a PLDV bursting disc. In severe applications, metal exposure may not be desirable, hence the plastic covering.

Specifications

Available Sizes

Types D. DV, DR and DRSV
Full range: l' thru 44'
Standard sizes: l'thru 30'
Type PLD:
Full range@ l' thru 44'
Standard sizes: l' thru 24'
Type PLDV.
Standard sizes: l' thru 24' (full range)

Pressure

Full range: 0.5 to 2000 psi 0 72'F (22-C) Minimum/maximum pressures for standard sizes
and combinations of disc materials: See pages 3 thru 8.

Temperature

FEP plastic seal: -40'F (-40'C) to 400'F (204'C) maximum
TFE plastic seal: -40'F (-40'C) to 500'F (260'C) maximum
Metal seal: -320'F (-196'C) to1000'F(538-C)
Cycle life for 'D' discs may be greatly reduced
at temperatures lower than -40'F (-4o'(1)

Top Section

Standard metals: 3l6 SS, lnconel/Alloy 600, Nickel/ Alloy 200, Monel/Alloy 400
Special metals: Hastelloy C-276/Alloy C-276, Titanium and Tantalum

Seal

Standard materials: FEP plastic, TFE plastic, 316 SS, Nickel/Alloy 200, Inconel/Alloy 600, Monel/Alloy 400, Hastelloy C-276/Alloy C-276, Silver, Aluminum
Special metals: Platinum, Titanium and Tantalum

Vacuum Support

Standard metal: 316 SS, lnconel/Alloy 600, Nickel/Alloy 200, Monel/Alloy 400
Special Hastelloy C-276/Alloy C-276, Titanium, Tantalum
Protective Standard metal: 316 SS. Inconel/Alloy 600,
ring' Monel/Alloy 400, Nickel/Alloy 200
Special: Hastelloy C-276/Alloy C-276, Titanium, Tantalum

Soft Gasket Ring

Standard metal for metal seal: Aluminum Standard material for plastic seal: FEP plastic
*When to use Protective Ring:
16'-24' 15 psig or less

Composite bursting discs for Bolted Flange and Union Type Safety Heads

BS&B Bolted and Union Type Safety Heads both require bursting discs with angular seating design. All standard discs with angular seating are listed on the following pages. Listing is by sizes with a full selection of standard discs for each size.

Minimum and maximum pressures for each disc are shown in psig @ 72' F. and kg/cm2 @ 22' C. Maximum temperatures are shown in 'F. and 'C.

Tolerances

Normal Bursting Tolerances for Type D Series Composite discs:

Marked BurstingPressure(psig) Expected Bursting Tolerance -
greater than 2 to less than 15 ± 1.5 psig
15 to less than 40 ± 2.0 psig
40 and above ± 5% psig

Manufacturing Ranges

Manufacturing Ranges for Composite discs:

DESIRED PRESSURE RATING
TEST SPECIMENS MUST Bursting WITHIN LIMITS BELOW THE PRESSURE YOU SPECIFY
PSIG PLUS MINUS
2 1/2 - 3 1/2 1 PSIG 1 PSIG
4 -6 2 PSIG 1 PSIG
7-10 2/12 PSIG 1 1/2 PSIG
11-16 3 PSIG 2 PSIG
17-25 4 PSIG 2 PSIG
26-40 5 PSIG 3 PSIG
41-65 6 PSIG 4 PSIG
66-100 9 PSIG 5 PSIG
101-150 12 PSIG 6 PSIG
151-200 16 PSIG 9 PSIG
201-350 23 PSIG 12 PSIG
351-500 30 PSIG 15 PSIG
501-&UP 6 PCT. 3 PCT.

  

DESIRED PRESSURE RATING
TEST SPECIMENS MUST Bursting WITHIN LIMITS BELOW THE PRESSURE YOU SPECIFY
Kg/CM2 PLUS MINUS
.176 - .246 .070 Kg/CM2 070 Kg/CM2
.281 - .422 .141 Kg/CM2 .070 Kg/CM2
.49 - .70 .211 Kg/CM2 .105 Kg/CM2
.77 - 1.13 .281Kg/CM2 .141 Kg/CM2
1.20 - 1.76 .352Kg/CM2 .141 Kg/CM2
1.83 - 2.81 .352 Kg/CM2 .211 Kg/CM2
2.88 - 4.57 .422 Kg/CM2 .281 Kg/CM2
4.64 - 7.03 .633Kg/CM2 .352 Kg/CM2
7.10 - 10.55 .844 Kg/CM2 .422 Kg/CM2
10.62 - 14.06 1.125 Kg/CM2 .633 Kg/CM2
14.14 - 24.61 1.617 Kg/CM2 .844 Kg/CM2
24.68 - 35.16 2.11 Kg/CM2 1.055 Kg/CM2
35.23 & Up 6 PCT. 3 PCT.

1" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

If Type D, DR or PLD disc will be exposed to vacuum, specify DV, DRV, DSV, DRSV or PLDV. Standard materials for vacuum support are 316 SS, lnconel/Alloy 600, Monel/Alloy 400, and Nickel/Alloy 200. Special materials are Hastelloy C-276/Alloy C-276, Titanium and Tantalum.

Standard material for protective ring with DR discs is 316 SS. Other metals available.

TFE plastic for seals is standard from 1" through 8" size. FEP plastic for seals is standard for 10" and larger except when temperature is over 400' F. (204'C), or pressures are less than available with TFE.

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 89
6.26
1000
70.3
400
204
130
9.1
1000
70.3
400
204
300
21.1
1000
70.3
230
16.2
600
42.2
400
204
TFE 44
3.09
1000
70.3
500
260
87
6.12
1000
70.3
500
260
300
21.1
1000
70.3
230
16.2
600
42.2
500
260
ALUMINUM 50
3.52
1600
112.5
800
427
- - - - - - - -
SILVER 110
7.7
2000
140.7
800
427
- - - - - - - -
NICKEL/ALLOY200 180
12.7
2000
140.7
1000
538
- - - - - - - -
MONEL/ALLOY/400 220
15.5
2000
140.7
1000
538
- - - - - - - -
INCONEL/ALLOY600 285
20.0
2000
140.7
1000
538
- - - - - - - -
316 SS 400
28.1
2000
140.7
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
680
47.8
2000
140.7
1000
538
- - - - - - - -

11/2" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 63
4.43
700
49.2
400
204
92
6.47
700
49.2
400
204
140
9.9
700
49.2
105
7.4
450
31.7
400
204
TFE 31
2.18
700
49.2
500
260
61
4.29
700
49.2
500
260
140
9.9
700
49.2
105
7.4
450
31.7
500
260
ALUMINUM 33
2.32
1300
91.4
800
427
- - - - - - - -
SILVER 73
5.13
1400
98.5
800
427
- - - - - - - -
NICKEL/ALLOY200 120
8.4
1400
98.5
1000
538
- - - - - - - -
MONEL/ALLOY/400 145
10.2
1400
98.5
1000
538
- - - - - - - -
INCONEL/ALLOY600 185
13.0
1400
98.5
1000
538
- - - - - - - -
316 SS 265
18.6
1400
98.5
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
450
31.7
1400
98.5
1000
538
- - - - - - - -

2" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 31
2.18
555
39.0
400
204
45
3.16
555
39.0
400
204
100
7.03
555
39.0
75
5.27
395
27.8
400
204
TFE 15
1.05
555
39.0
500
260
30
2.11
555
39.0
500
260
100
7.03
555
39.0
75
5.27
395
27.8
500
260
ALUMINUM 20
1.41
960
67.5
800
427
- - - - - - - -
SILVER 43
3.02
1100
77.4
800
427
- - - - - - - -
NICKEL/ALLOY200 69
4.85
1100
77.4
1000
538
- - - - - - - -
MONEL/ALLOY/400 84
5.91
1100
77.4
1000
538
- - - - - - - -
INCONEL/ALLOY600 109
7.7
1100
77.4
1000
538
- - - - - - - -
316 SS 150
10.6
1100
77.4
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
260
17.6
1100
77.4
1000
538
- - - - - - - -

3" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 25
1.76
450
31.7
400
204
32
2.25
450
31.7
400
204
65
4.57
450
31.7
45
3.16
315
22.2
400
204
TFE 11
.77
450
31.7
500
260
21
1.48
450
31.7
500
260
65
4.57
450
31.7
45
3.16
315
22.2
500
260
ALUMINUM 15
1.05
730
51.3
800
427
- - - - - - - -
SILVER 32
2.25
650
45.7
800
427
- - - - - - - -
NICKEL/ALLOY200 52
3.66
900
63.3
1000
538
- - - - - - - -
MONEL/ALLOY/400 62
4.36
900
63.3
1000
538
- - - - - - - -
INCONEL/ALLOY600 79
5.56
900
63.3
1000
538
- - - - - - - -
316 SS 115
8.1
900
63.3
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
195
13.7
900
63.3
1000
538
- - - - - - - -

4" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 19
1.34
415
29.2
400
204
24
1.69
415
29.2
400
204
60
4.22
415
29.2
35
2.46
300
21.1
400
204
TFE 8
.56
415
29.2
500
260
16
1.13
415
29.2
500
260
60
4.22
415
29.2
35
2.46
300
21.1
500
260
ALUMINUM 12
.84
630
44.3
800
427
- - - - - - - -
SILVER 24
1.69
600
42.2
800
427
- - - - - - - -
NICKEL/ALLOY200 39
2.74
830
58.4
1000
538
- - - - - - - -
MONEL/ALLOY/400 47
3.31
830
58.4
1000
538
- - - - - - - -
INCONEL/ALLOY600 60
4.22
830
58.4
1000
538
- - - - - - - -
316 SS 85
5.98
830
58.4
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
145
10.2
830
58.4
1000
538
- - - - - - - -

6" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 13
.91
320
22.5
400
204
18
1.27
320
22.5
400
204
75
5.27
320
22.5
45
3.16
225
15.8
400
204
TFE 6
.42
320
22.5
500
260
12
.84
320
22.5
500
260
75
5.27
320
22.5
45
3.16
225
15.8
500
260
ALUMINUM 9
.63
485
34.1
800
427
- - - - - - - -
SILVER 18
1.27
500
35.2
800
427
- - - - - - - -
NICKEL/ALLOY200 29
2.04
640
45.0
1000
538
- - - - - - - -
MONEL/ALLOY/400 35
2.46
640
45.0
1000
538
- - - - - - - -
INCONEL/ALLOY600 45
3.16
640
45.0
1000
538
- - - - - - - -
316 SS 64
4.50
640
45.0
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
110
7.7
640
45.0
1000
538
- - - - - - - -

8" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 11
.77
295
20.8
400
204
16
1.13
295
20.8
400
204
75
5.27
295
20.8
55
3.87
200
14.1
400
204
TFE 5
.35
295
20.8
500
260
11
.77
295
20.8
500
260
75
5.27
295
20.8
55
3.87
200
14.1
500
260
ALUMINUM 7
.49
420
29.5
800
427
- - - - - - - -
SILVER 14
.98
400
28.1
800
427
- - - - - - - -
NICKEL/ALLOY200 23
1.62
590
41.5
1000
538
- - - - - - - -
MONEL/ALLOY/400 28
1.97
590
41.5
1000
538
- - - - - - - -
INCONEL/ALLOY600 35
2.46
590
41.5
1000
538
- - - - - - - -
316 SS 50
3.52
590
41.5
1000
538
- - - - - - - -
HASTELLOY B OR
C-276/ALLOY C-276
85
5.98
590
41.5
1000
538
- - - - - - - -

10" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 7
.49
240
16.9
400
204
14
.98
240
16.9
400
204
60
4.22
240
16.9
35
2.46
160
11.3
400
204
TFE 4
.28
240
16.9
500
260
9
.63
240
16.9
500
260
60
4.22
240
16.9
35
2.46
160
11.3
500
260
ALUMINUM 5
.35
340
23.9
800
427
- - - - - - - -
SILVER 12
.84
200
14.1
800
427
- - - - - - - -
NICKEL/ALLOY200 18
1.27
480
33.8
1000
538
- - - - - - - -
MONEL/ALLOY/400 22
1.55
480
33.8
1000
538
- - - - - - - -
INCONEL/ALLOY600 28
1.97
480
33.8
1000
538
- - - - - - - -
316 SS 38
2.67
480
33.8
1000
538
- - - - - - - -

12" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
200
14.1
400
204
10
.70
200
14.1
400
204
45
3.16
200
14.1
30
2.11
140
9.9
400
204
TFE 3
.21
200
14.1
500
260
6
.42
200
14.1
500
260
45
3.16
200
14.1
30
2.11
140
9.9
500
260
ALUMINUM 5
.35
290
20.4
800
427
- - - - - - - -
NICKEL/ALLOY200 15
1.05
400
28.1
1000
538
- - - - - - - -
MONEL/ALLOY/400 19
1.34
400
28.1
1000
538
- - - - - - - -
INCONEL/ALLOY600 24
1.69
400
28.1
1000
538
- - - - - - - -
316 SS 34
2.39
400
28.1
1000
538
- - - - - - - -

14" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
170
12.0
400
204
10
.70
170
12.0
400
204
40
2.81
170
12.0
30
2.11
120
8.4
400
204
TFE 3
.21
170
12.0
500
260
6
.42
170
12.0
500
260
40
2.81
170
12.0
30
2.11
120
8.4
500
260
ALUMINUM 4
.28
270
19.0
800
427
- - - - - - - -
NICKEL/ALLOY200 14
.98
350
24.6
1000
538
- - - - - - - -
MONEL/ALLOY/400 17
1.20
350
24.6
1000
538
- - - - - - - -
INCONEL/ALLOY600 22
1.55
350
24.6
1000
538
- - - - - - - -
316 SS 29
2.04
350
24.6
1000
538
- - - - - - - -

16" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
150
10.6
400
204
10
.70
150
10.6
400
204
35
2.46
150
10.6
25
1.76
105
7.4
400
204
TFE 3
.21
150
10.6
500
260
6
.42
150
10.6
500
260
35
2.46
150
10.6
25
1.76
105
7.4
500
260
ALUMINUM 4
.28
250
17.6
800
427
- - - - - - - -
NICKEL/ALLOY200 12
.84
300
21.1
1000
538
- - - - - - - -
MONEL/ALLOY/400 14
.98
300
21.1
1000
538
- - - - - - - -
INCONEL/ALLOY600 19
1.34
300
21.1
1000
538
- - - - - - - -
316 SS 25
1.76
300
21.1
1000
538
- - - - - - - -

18" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
135
9.5
400
204
10
.70
135
9.5
400
204
35
2.46
150
10.6
25
1.76
90
7.4
400
204
TFE 3
.21
135
9.5
500
260
6
.42
135
9.5
500
260
35
2.46
150
10.6
25
1.76
90
7.4
500
260
ALUMINUM 4
.28
225
15.8
800
427
- - - - - - - -
NICKEL/ALLOY200 10
.70
270
19.0
1000
538
- - - - - - - -
MONEL/ALLOY/400 13
.91
270
19.0
1000
538
- - - - - - - -
INCONEL/ALLOY600 17
1.20
270
19.0
1000
538
- - - - - - - -
316 SS 23
1.62
270
19.0
1000
538
- - - - - - - -

20" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
120
8.4
400
204
10
.70
120
8.4
400
204
35
2.46
150
10.6
25
1.76
90
7.4
400
204
TFE 3
.21
120
8.4
500
260
6
.42
120
8.4
500
260
35
2.46
150
10.6
25
1.76
80
7.4
500
260
ALUMINUM 3
.21
200
14.1
800
427
- - - - - - - -
NICKEL/ALLOY200 10
.70
240
16.9
1000
538
- - - - - - - -
MONEL/ALLOY/400 12
.84
240
16.9
1000
538
- - - - - - - -
INCONEL/ALLOY600 15
1.05
240
16.9
1000
538
- - - - - - - -
316 SS 20
1.41
240
16.9
1000
538
- - - - - - - -

24" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV PLD DISCS PLDV DISCS
TOP SECTION MATERIAL CENTER SECTION MATERIAL CENTER SECTION MATERIAL
INCONEL 316 SS 316 SS 316 SS NICKEL ALL MATERIALS
MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MAX. TEMP. MIN. PRES. MAX. PRES. MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
100
7.03
400
204
10
.70
100
7.03
400
204
35
2.46
150
10.6
25
1.76
90
7.4
400
204
TFE 3
.21
100
7.03
500
260
6
.42
100
7.03
500
260
35
2.46
150
10.6
25
1.76
80
7.4
500
260
ALUMINUM 3
.21
170
12.0
800
427
- - - - - - - -
316 SS 70
4.92
200
14.1
1000
538
- - - - - - - -

30" Composite discs: Types D, DV, DR, DRR, DSV, DRSV, PLD, PLDV

SEAL MATERIAL D,DV,DR,DRR,DSV,DRSV
TOP SECTION MATERIAL
INCONEL 316 SS
MIN. PRES. MAX. PRES. MAX. TEMP.
FEP 5
.35
80
5.63
400
204
TFE 3
.21
80
5.63
500
260
ALUMINUM 3
.21
140
9.9
800
427
316 SS 56
3.94
170
12.0
1000
538

BS&B Type TC Bursting disc* for railroad tank car service is designed to conform with ICC Regulations. The highly accurate disc is adaptable to standard threaded or bolted type tank car fittings. If dimensions of tank car fittings are different from the ones shown below, BS&B will design a special disc on request.The pressure zone of the TC disc is the slotted top section. Fluoropolymer seal isolates top section from contents of the tank. The vacuum support prevents excessive downward movement of the seal should the disc be subjected to vacuum during unloading or while car is in transit. The vacuum support also protects the disc when car is in transit or being "humped."

The tank car ring located on the atmospheric side of the disc protects the controlled pressure zone of the disc even though the I.D. dimensions of tank car fitting are not within fixed tolerances