SVI™ Reverse Buckling Rupture Disk

Performance Features

  • Designed for gas service (acceptable for liquid service with a compressible gas/vapor pocket)
  • Suitable for operating pressure to 90% of the marked burst pressure (95% of the minimum burst pressure)
  • Designed for non-fragmentation, recommended for Relief Valve isolation
  • Damage safety ratio ≤ 1.5
  • Suitable for cycling service
  • Vacuum resistant
  • Back pressure resistance can be specified
  • Optional fluoropolymer liner/coating
  • Available with ASME “UD” (select 0%, -5%, -10% Manufacturing Design Range)
  • Pressure Equipment Directive “CE” marking and/or other International Certifications
  • BS&B proprietary technology

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

Sizes & Pressures

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

Disk Size Nickel Alloy 200 Inconel® Alloy 600
in mm psig barg psig barg
min max min max min max min max
1.5 40 125 400 9 28 150 400 10 28
2 50 90 400 6 28 110 400 8 28
2.5  65  90 400 6 28 110 400 8 28
3 80 75 350 5 24 90 350 6 24
4 100 60 300 4 21 72 300 5 21
6 150 50 250 3.5 17 60 250 4 17
8 200 Consult Factory
10 250
Note: Inconel® is a registered trademarks of Special Metals Corporation and its subsidiaries.

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

SVI™ Rupture Disk Assembly for Relief Valve Isolation
Burst Alert Sensors
Detec Saf Alarm System - Burst Disk Monitor

Overview

The SVI™ Rupture Disk (Bursting Disc) is a single-use rupture disk (bursting disc) assembly for isolating safety relief valves and for retrofit with fixed piping.