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
  • Assemblies
  • 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%

Standard Assembly Options

Sta-Kul™ Brass Body

TorqueFit

Welded Cassettes

Welded Assembly

Threaded Assembly

Product Literature

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

Overview

For high pressure applications. MRB (The Machined Reverse Buckling Rupture Disk (Bursting Disc)) offers a one-piece design including both disk and housing. It is a uniform metal slug machined to a thin diaphragm in the center and then formed. When the reversal pressure is reached the disk snaps through and shears out completely at the disk/housing junction.