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


FRB Low Pressure Reverse Buckling Rupture Disk (Bursting Disc)



The most advanced rupture disk (bursting disc) technology provides a reverse bucklng style disk in sizes less than 1 inch (25mm) and in extremely low pressures. The reliable and accurate performance of the FRB makes it ideal for applications in the Aircraft, Defense and OEM Industries.

Features

 Standard sizes: 1/4", 3/8", 1/2" (6.4,9.5,13mm)

  •  Pressure Ratings from 35 psid (2.41 bard) to 700 psid (48.28 bard)
  • Opens along Circular Score
  • Compression loaded, reverse buckling disk
  • Standard materials: 316ss, Nickel 200, lnconel 600

Benefits

  • Lowest possible burst pressure ratings available in small diameters
  • Can operate up to 80% of its rated burst pressure
  • Superior performance in cycling service
  • Full opening in either gas or liquid service"
  • Accurate and reliable burst ratings
  • Minimal or no fragmentation
  • Withstands full vacuum without extra support. 
  • Various holders designs are available to meet your application.

Typical Applications

  • Lithium Batteries
  • Fire Extinguisher
  • Compressed Gas Cylinders
  • Refrigeration Units
  • Aerospace Missiles
  • Aircraft Wheels

FRB® Rupture Disk (Bursting Disc) Selection Data

Pressure Ratings at 72º F (22º C) For Gas or Vapor Service
DISK MATERIAL*
DISK SIZE
NICKEL 200
  INCONEL 600     
 316SS
  MIN MAX MIN MAX MIN MAX
IN
MM
PSID  BARD PSID
BARD 
PSID 
BARD  PSID  BARD 
PSID 
BARD
PSID 
BARD
1/4
6.4
100
6.89
450
31.03
150
10.34
700 48.28
150
10.34
700
48.28
3/8
9.5
50
3.45
400
27.59
60
4.14
650 44.83
60
4.14
650
44.83
1/2
13
35
2.41
200
13.79
45
3.10
450 31.03
45
3.10
450
31.03

  

Pressure Ratings at 72°F (22° C) For Liquid Service
DISK MATERIAL*
DISK SIZE
NICKEL 200
INCONEL 600        316 SS
  MIN  MAX MIN  MAX MIN MAX
IN
MM
PSID BARD
PSID
BARD
PSID BARD PSID
BARD
PSID 
BARD
PSID
BARD
1/4
6.4
250
17.24
450
31.03
250
17.24
700 48.28 
250
17.24
700
48.28
3/8
9.5
150
10.34
400
27.59 
150
10.34
650 44.83 
150
10.34
650
44.83
1/2
13
80
5.52
200
13.79
80
5.52
450 31.03 
80
5.52
450 
31.03

* Consult factory for material and burst pressure availability.

Engineering Information

  •  Burst rating must be specified within the defined min/max pressures
  •  Consult factory for a burst range applicable to a specific burst pressure 
  •  Minimum and maximum pressure ratings are applicable at 72°F (22° C)

NOTE
Recommended maximum temperature for each metal is:

Metal
°F
°C
Nickel 200
750 
399
InconeI600
900
482
316SS
900
482 

Disk Dimensions

 NOMINAL SIZE INCHES
"A"
"B"**
"C"
"D"
FLOW
DIAMETER
OUTSIDE
DIAMETER
INSIDE
DIAMETER
MAXIMUM
HEIGHT
1/4
.215
.550
.315
.030
3/8
.350
.935
.500
.050
1/2
.525
.935
.750
.060

**Consult factory over other available diameters.

NOTE: Products, specifications, and all data in this literature are subject to change without notice. Questions regarding product selection and specifications for specific applications should be directed to BS&B, Attn: Customer Service Department.