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
• Benefits
• Typical Applications
• Selection Data
• Engineering Information
• Disk Dimensions 

Features

 Standard sizes: ¼", 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
¼	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
¼	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
¼	.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.