Type D™ Forward Acting Rupture Disk

Low Pressure Composite Tension Loaded Rupture Disk


Performance Features

  • 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
  • Damage safety ratio ≤ 1
  • Vacuum resistant with additional vacuum support
  • 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
  • Safety Heads & Sensors
  • Accessories
  • Documentation

Sizes & Pressures

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

Disk Size Nickel Alloy 200 Monel Alloy 400 Inconel Alloy 600 Hastelloy Alloy C-276 316SS Aluminum Fluoropolymer Film Silver
in mm psig barg psig barg psig barg psig barg psig barg psig barg psig barg psig barg
min max min max min max min max min max min max min max min max min max min max min max min max min max min max min max min max
1 25 1800 2000 13 138 220 2000 16 138 285 2000 20 138 680 2000 48 138 400 2000 28 138 50 1600 4 113 89 1000 4 113 110 2000 8 141
1.5 40 120 1400 8 99 145 1400 10 99 185 1400 13 99 265 1400 19 99 265 1400 19 99 33 1300 2 91 63 700 4 49 73 1400 5 99
2 50 69 1100 5 77 84 1100 6 77 109 1100 8 77 260 1100 18 77 150 1100 11 77 20 960 1 68 31 555 2 39 43 1100 3 77
3 80 52 900 4 63 62 900 4 63 79 900 6 63 195 900 14 63 115 900 8 63 15 730 1 51 25 450 2 32 32 650 2 46
4 100 39 830 3 58 47 830 3 58 60 830 4 58 145 830 10 58 85 830 6 58 12 630 1 44 19 415 1 29 24 600 2 42
6 150 29 640 2 45 35 640 3 45 45 640 3 45 110 640 8 45 64 640 5 45 9 485 1 34 13 320 1 23 18 500 1 35
8 200 23 590 2 42 28 590 2 42 35 590 3 42 85 590 6 42 50 590 4 42 7 420 0.5 30 11 295 1 21 14 400 1 28
10 250 18 480 1 34 22 480 2 34 28 480 2 34 - - - - 38 480 3 34 5 340 0.4 24 7 240 0.5 17 12 200 1 14
12 300 15 400 1 28 19 400 1 28 24 400 2 28 - - - - 34 400 2 28 5 290 0.4 20 5 200 0.4 14 - - - -
14 350 14 350 1 25 17 350 1 25 22 350 2 25 - - - - 29 350 2 25 4 270 0.3 19 5 170 0.4 12 - - - -
16 400 12 300 1 21 14 300 1 21 19 300 1 21 - - - - 25 300 2 21 4 250 0.3 18 5 150 0.4 11 - - - -
18 450 10 270 1 19 13 270 1 19 17 270 1 19 - - - - 23 270 2 19 4 225 0.3 16 5 135 0.4 10 - - - -
20 500 10 240 1 17 12 240 1 17 15 240 1 17 - - - - 20 240 1 17 3 200 0.2 14 5 120 0.4 8 - - - -
24 600 - - - - - - - - - - - - - - - - 70 200 5 14 3 170 0.2 12 5 100 0.4 7 - - - -
30 750 - - - - - - - - - - - - - - - - 56 170 4 12 3 140 0.2 10 5 80 0.4 6 - - - -

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%

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

Type D™ Rupture Disk Brochure
DV(F)™ Rupture Disk Brochure
Burst Alert Sensors Brochure

Installations

Type B™ and D™ Rupture Disks® & FA-7R Bolted Union and Screw Type Safety Head Assemblies Installation Instructions
Burst Alert Leak Dectector Installation Instruction
Burst Alert Sensor Installation Instruction