FRB™ Frustum Rupture Disk

Frustum Reverse Buckling Disk


Performance Features

  • Standard sizes: 1/8, 1/4, 3/8 , 1/2, and 3/4 inch (3, 6, 9, 12 and 19 mm)
  • Pressure ratings from 20 to 900 psig (1.4 to 62 barg)
  • Full opening along circular score
  • Solid metal, reverse buckling technology
  • Standard materials: 316ss, nickel 200, Inconel® 600 and aluminum
Note: Most FRB disks are supplied as an assembly, often with screw threaded connections

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  • Sizes & Pressures
  • Burst Tolerance
  • Assemblies
  • Documentation

Sizes & Pressures

FRB™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C) for gas or vapor service
Disk Size Nickel Alloy 200 Inconel® Alloy 600 316ss Aluminum
in mm psig barg psig barg psig barg psig barg
min max min max min max min max min max min max min max min max
0.125 3 200 500 13.79 34.47 250 850 17.24 58.61 300 900 20.68 62.05 125 400 8.62 27.58
0.25 6 100 450 6.89 31.03 150 800 10.34 55.16 150 850 10.34 58.61 60 300 4.14 20.68
0.375 9 50 400 3.45 27.58 60 750 4.14 51.71 60 800 4.14 55.16 35 250 2.41 17.24
0.5 13 35 200 2.41 13.79 45 650 3.10 44.82 45 675 3.10 46.54 25 200 1.72 13.79
0.75 19 30 120 2.07 8.27 35 390 2.41 26.89 40 405 2.76 27.92 20 120 1.38 8.27

FRB™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C) for liquid service
Disk Size Nickel Alloy 200 Inconel® Alloy 600 316ss Aluminum
in mm psig barg psig barg psig barg psig barg
min max min max min max min max min max min max min max min max
0.125 3 Consult factory
0.25 6 250 450 17.24 31.03 250 800 17.24 55.16 250 850 17.24 58.61 60 300 4.14 20.68
0.375 9 150 400 10.34 27.58 150 750 10.34 51.71 150 800 10.34 55.16 35 250 2.41 17.24
0.5 13 80 200 5.52 13.79 80 650 5.52 44.82 80 675 5.52 46.54 25 200 1.72 13.79
0.75 19 Consult factory

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

Custom Engineered Products
Welded Cassettes Brochure
Burst Alert Sensors Brochure
Detec Saf Alarm System Brochure

Installations

Burst Alert Sensor Installation Instruction
Burst Alert Leak Dectector Installation Instruction

Overview

The most advanced rupture disk technology provides a reverse buckling style disk in sizes less than 1 in (25 mm) 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.

FRB™ Rupture Disk (Bursting Disc) Material Options

The FRB™ rupture disk (bursting disc) is available in a range of corrosion resistant materials. Standard disk materials are Nickel alloy 200, Stainless Steel grade 316, Inconel® (Nickel alloy 600), & Aluminum. All standard disks are available with 0%, 5%, and 10% manufacturing ranges.

 

Sanitary & Aseptic Applications

Eco-Saf rupture disks (bursting discs), in non-contaminating materials, presenting a smooth disk surface towards the process are ideal for sanitary and aseptic applications. The disk’s sanitary gasket provides a leak tight seal when installed in its holder Type ER-C and secured by standard sanitary clamps.

 

Installation in EC-7RS™ Safety Head

The ECR™ rupture disk (bursting disc) may be installed in the EC-7RS™ safety head and the cap screws torque to provide the correct load on the disk on the workshop before installation in the process. The pretorquable feature minimizes the possibility of process leakage or permanent disk failure due to incorrect torque. Asymmetric locating pins center the disk in the safety head ensuring the correct direction of the disk installation.