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Flat Slotted Rupture Disks (PF)

Burst pressure: 0.02-100barg

Size range: 25mm-1200mm

Can be operated at less than 50% of the calibrated burst pressure.

Advanced laser slit technology

No gripper required

Standard material: Lint free gasket / Stainless steel / Fluoroplastic / Stainless steel / Asbestos free gasket, please contact us for other requirements.

Demand consultation
Flat Slotted Rupture Disks (PF)

Product Overview

Flat Plate Open Seam Rupture Discs evolved from Positive Arch Open Seam Rupture Disks and come with their own gasket. Mainly used in low pressure applications and mounted directly into standard or simple flanges.


Available Options

Burst Sensors
Clamps
Fluoroplastic Gaskets
Rupture Disks for Tanks


Tank Protection

Storage tanks are made of relatively lightweight materials and often have limited pressure holding capacity. If not properly relieved, a vacuum can easily develop, resulting in shell deflation and damage, and Type PF rupture disks can provide cost-effective protection for tanks.
The rupture disk size should be at least equal to the size of the tank's flow inlet or outlet connection, whichever is greater, the maximum burst pressure should be no greater than the tank's design pressure or vacuum, whichever is less, and the minimum burst pressure should be at least twice the tank's maximum working pressure or vacuum, whichever is greater.


Pressure relief valve protection

Atmospheric corrosive substances entering the valve through the safety valve outlet are liable to damage the valve's working parts and affect normal operation, and valves whose outlets are connected to a common manifold are more susceptible to damage. A Type PF rupture disc mounted on the valve outlet flange will effectively protect the valve components from the harsh environment.
The rupture disk should be the same size as the outlet flange of the valve. The maximum burst pressure should not be greater than the set pressure of the valve and the minimum burst pressure should be at least twice the maximum working pressure in the manifold.


Burst Tolerance / (GB567-2012)


Calibrated Burst Pressure
bar
≥0.01~<0.1 ≥0.1~<1 ≥1~<3 ≥3~<1000 ≥1000~<5000
Bursting Tolerance ±50% ±25% ±0.015MPa ±5% ±4%
* The rupture tolerance is the maximum expected change in rupture pressure marked by the rupture disc.

Specifications

Key parameter table
Size FEP Polytetrafluoroethylene Aluminum Nickel
NPS DN psig barg psig barg psig barg psig barg
[in] [mm] min, max, min, max, min, max, min, max, min, max, min, max, min, max, min, max,
1" 25 11.6 1015 0.8 70 29 1015 2 70 87 1450 6 100 348 1450 24 100
1.25" 32 8.7 870 0.6 60 21.75 870 1.5 60 65.25 1087.5 4.5 75 290 1087.5 20 75
1.5" 40 5.8 725 0.4 50 14.5 725 1 50 52.2 942.5 3.6 65 217.5 942.5 15 65
2" 50 4.35 580 0.3 40 10.88 580 0.75 40 49.3 797.5 3.4 55 203 797.5 14 55
2.5" 65 3.63 522 0.25 36 9.08 522 0.63 36 36.25 725 2.5 50 159.5 725 11 50
3" 80 2.9 464 0.2 32 7.25 464 0.5 32 31.9 580 2.2 40 145 580 10 40
4" 100 2.18 420.5 0.15 29 5.45 420.5 0.38 29 26.1 435 1.8 30 116 435 8 30
5" 125 2.18 377 0.15 26 5.45 377 0.38 26 21.75 435 1.5 30 101.5 435 7 30
6" 150 2.18 333.5 0.15 23 5.45 333.5 0.38 23 18.85 362.5 1.3 25 87 362.5 6 25
8" 200 1.45 304.5 0.1 21 3.63 304.5 0.25 21 14.5 362.5 1 25 72.5 362.5 5 25
10" 250 1.16 246.5 0.08 17 2.9 246.5 0.2 17 11.6 362.5 0.8 25 58 362.5 4 25
12" 300 1.02 203 0.07 14 2.55 203 0.18 14 10.15 290 0.7 20 43.5 290 3 20
14" 350 0.87 174 0.06 12 2.18 174 0.15 12 8.7 290 0.6 20 43.5 290 3 20
16" 400 0.73 145 0.05 10 1.83 145 0.13 10 7.25 232 0.5 16 36.25 232 2.5 16
Maximum operating temperature 200℃ 260℃ 400℃ 530℃
Size Monel Inconel Stainless steel Hastelloy
NPS DN psig barg psig barg psig barg psig barg
[in] [mm] min, max, min, max, min, max, min, max, min, max, min, max, min, max, min, max,
1" 25 406 1450 28 100 478.5 1450 33 100 406 1450 28 100 435 1450 30 100
1.25" 32 319 1087.5 22 75 377 1087.5 26 75 319 1087.5 22 75 333.5 1087.5 23 75
1.5" 40 261 942.5 18 65 304.5 942.5 21 65 261 942.5 18 65 275.5 942.5 19 65
2" 50 232 797.5 16 55 275.5 797.5 19 55 232 797.5 16 55 261 797.5 18 55
2.5" 65 174 725 12 50 203 725 14 50 174 725 12 50 377 725 26 50
3" 80 159.5 580 11 40 174 580 12 40 159.5 580 11 40 333.5 580 23 40
4" 100 130.5 435 9 30 145 435 10 30 130.5 435 9 30 261 435 18 30
5" 125 116 435 8 30 130.5 435 9 30 116 435 8 30 217.5 435 15 30
6" 150 101.5 362.5 7 25 116 362.5 8 25 101.5 362.5 7 25 203 362.5 14 25
8" 200 87 362.5 6 25 101.5 362.5 7 25 87 362.5 6 25 159.5 362.5 11 25
10" 250 72.5 362.5 5 25 87 362.5 6 25 72.5 362.5 5 25 130.5 362.5 9 25
12" 300 58 290 4 20 72.5 290 5 20 58 290 4 20 116 290 8 20
14" 350 58 290 4 20 72.5 290 5 20 58 290 4 20 101.5 290 7 20
16" 400 43.5 232 3 16 58 232 4 16 43.5 232 3 16 87 232 6 16
Maximum operating temperature 530℃ 530℃ 530℃ 530℃
* The content is for reference only. Please contact us for more information.

Downloads

  • Flat Composite Rupture DiscPF Series
    Flat Composite Rupture DiscPF Series
    2024-11-20
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