MRB™ High Pressure Integral Disk

Performance Features

  • Sizes from 1/4" (6 mm) and up
  • Pressure ratings available up to 70,000 psig (4,800 barg)
  • Opens full bore with no flow restrictions
  • Design assures long service life with a very high resistance to fatigue
  • Operates up to 90% of disk pressure rating
  • Benefits
  • Accurate and reliable burst ratings
  • Superior performance in cycling service
  • Withstands full vacuum
  • Standard and custom holder designs are available
  • Non-torque sensitive

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  • Sizes & Pressures
  • Burst Tolerance
  • Safety Heads & Sensors
  • Accessories
  • Documentation

Sizes & Pressures

MRB™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)
Disk Size Inconel® Alloy 600 Hastelloy® Alloy C-276 and 316
in mm psig barg psig barg
min max min max min max min max
0.375 9 4,500 70,000 310 4,826 4,300 70,000 296 4,826
0.5 13 4,000 54,000 275 3,720 3,800 48,000 262 3,720
0.625 16 3,500 52,000 241 3,590 3,500 46,000 241 3,590
0.75 19 3,100 49,000 213 3,380 2,900 44,000 200 3,380
1 24 2,500 43,000 172 2,970 2,500 39,000 172 2,970

Note: Other dimensions available upon request

Burst Tolerance

Marked Burst Pressure Burst Tolerance
≤ 40 psig (2.76 barg) ± 2 psig (0.138 barg)
> 40 psig (2.76 barg) ± 5%

Accessories

BS&B supplies many of the Accessories required to safely and conveniently install our overpressure relief devices and complementary products. Through our professional team and global network of sales engineers and procurement personnel, we are able to provide the highest quality accessory products to meet your installation requirements.

Saf-T-Change Quick Disk Replacement (QDR)

After activation, the replacement disk is quickly slid into place. Saving hours of lost production due to blown rupture disks.

Tell-Tale Assemblies & Excess Flow Valves/Gauges

A gauge tap in the outlet flange of the safety head may be considered when the safety head is installed in a vertical position.

Spare Safety Heads & Cap Screws

Jackscrews

When activated, the jackscrews effectively separate the flanges, providing adequate clearance to remove or insert a safety head and external gaskets.

Lifting Lug Eye Bolts

Eye bolts are recommended when weight and/or accessibility is a factor in lifting safety heads.

Baffle Plate

When a safety head is free-vented to atmosphere, a baffle plate may be considered to disperse overpressure and absorb recoil.

Product Literature

MRB™ Machined Reverse Buckling Rupture Disks
Custom Engineered Products
Threaded Rupture Disk Assemblies
Burst Alert Sensors
Detec Saf Alarm System - Burst Disk Monitor