ITC™ Forward Acting Rupture Disk

Performance Features

  • Smooth surface finish
  • Gasketed for installation between flanges
  • Designed for gas service (acceptable for liquid service with a compressible gas/vapor pocket)
  • Suitable for operating pressure to 80% of the marked burst pressure (85% of the minimum)
  • Designed for non-fragmentation, recommended for Relief Valve isolation
  • Suitable for cycling service
  • Vacuum resistant
  • Pressure Equipment Directive “CE” marking and/or other International Certifications
  • BS&B proprietary technology

Request a Quote


  • Sizes & Pressures
  • Burst Tolerance
  • Accessories
  • Documentation

Sizes & Pressures

ITC™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)

Disk Size Burst Pressure Temperature Rating
in mm psig barg °F °C
2.5 and 3 65 and 80 53.2 3.67 68 20
59.5 4.10 68 20
70.2 4.84 68 20
Burst tolerance: +5% of stamped burst pressure.
Consult BS&B for other materials and pressure ratings

Burst Tolerance

Marked Burst Pressure Burst Tolerance
2 ≤ 15 psig (0.14 ≤ 1.03 barg) ± 1.5 psig (0.1 barg)
15 < 40 psig (1.03 < 2.8 barg) ± 2.0 psig (0.14 barg)
≥ 40 psig (2.76 barg) ± 5%


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


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

ITC™ & RTC™ Rupture Disk (Cargo-Gard)
Burst Alert Sensors
Saf-T-Change™ QDR Rupture Disk Replacement System
Detec Saf Alarm System - Burst Disk Monitor


The BS&B Safety Systems ITC™ Reverse Rupture Disk (Bursting Disc) is specifically designed for protection of intermodal tank containers. The ITC™ Reverse Rupture Disk (Bursting Disc) conforms with the latest norms IMO, ADR, RID, US DOT, DOT blue book and ISO. The ITC™ is a scored tension loaded rupture disk assembly.

ITC™ Rupture Disk (Bursting Disc) Material Options

Standard disk materials are Stainless Steel grade 316 & Nickel alloy 200. Other materials are available on request. Fluoropolymer film liners are offered with the type ITC™ rupture disk (bursting disc) at all burst pressures. All standard disks are available with 0%, 5%, and 10% manufacturing ranges.



The ITC™ rupture disk (bursting disc) has been flow tested with most major world tank valve manufacturers.



The ITC™ rupture disk (bursting disc) slips into the tank flange bore. The codes require that the space between the future disk and relief valve be fitted with a gauge or a suitable telltale indicator to detect a ruptured or a leaking disk.