LCN™ Forward Acting Rupture Disk

Performance Features

  • Designed for gas, liquid and multi-phase service
  • Suitable for operating pressure to 80% of the minimum burst pressure
  • Damage safety ratio ≤ 1
  • Vacuum resistant with additional vacuum support
  • Pressure Equipment Directive “CE” marking and/or other International Certifications

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

Sizes & Pressures

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

Disk Size 316ss / Fluorcarbon Film / 316ss
in mm psig barg
min max min max
1 25 14 188 1 13
1.5 40 12 135 0.8 9
2 50 7 113 0.5 8
3 80 5 90 0.4 6
4 100 5 75 0.4 5
6 150 3 60 0.2 4
8 200 3 53 0.2 4
10 250 3 45 0.2 3
12 300 3 41 0.2 3
14 350 3 35 0.2 2
16 400 3 32 0.2 2
18 450 3 32 0.2 2
20 500 3 32 0.2 2
24 600 3 30 0.2 2

Note: The requested burst pressure is the marked burst pressure.

Burst Tolerance

Marked Burst Pressure Burst Tolerance
< 7 psig (0.345 barg) ± 1 psig (0.069 barg)
< 15 psig (< 1.03 barg) ± 1.5 psig (0.103 barg)
20 psig < 40 psig (1.38 barg < 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

Nu-Saf™ Series Scored Forward Acting Rupture Disks
Burst Alert Sensors
Saf-T-Change™ QDR Rupture Disk Replacement System
Detec Saf Alarm System - Burst Disk Monitor