ZOOK graphite rupture disks are made from a single piece of graphite which is impregnated in a patented resin. The resulting material called “impervious graphite” is impermeable and is resistant to most corrosives, including alkalis, organic solvents, and most acids.

Graphite disks are easy to install and are maintenance free, tamperproof, have no springs or moving arts and mount directly between standard flanges. They are used in chemical, petrochemical, food, medical, and related processing systems around the world.

ZOOK is the first graphite rupture disk manufacturer to earn the ASME Code UD symbol stamp and certificate of authorization. ZOOK has also been certified in accordance with the Pressure Equipment Directive (PED 2014/68/EU) and can provide CE marked graphite rupture disks.

Mono

Best Graphite Choice for Low and Intermediate Burst Ratings.

Sizes: 1/2″ – 24″ (13 mm – 610 mm)
Burst Ratings: 0.25 psig – 150 psig (0.02 barg – 10.34 barg)

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Inverted

Best Graphite Choice for Higher Burst Ratings.

Sizes: 1/2″ – 24″ (13 mm – 610 mm)
Burst Ratings: 0.25 psig – 1000 psig (0.02 barg – 69 barg)

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Duplex

Best Graphite Choice for Applications Involving Highly Oxidizing Agents and Halogens.

Sizes: 1/2″ – 24″ (13 mm – 610 mm)
Burst Ratings: 0.50 psig – 1000 psig (0.03 barg – 69 barg)

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FS-Inverted

Fluoropolymer Sintered Graphite Rupture Disk. The best choice for highly corrosive and broad temperature range applications.

Sizes: 1″ – 24″ (25 mm – 610 mm)
Burst Ratings: 1.00 psig – 1000 psig (0.07 barg – 69 barg)

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FS-V Inverted

Fluoropolymer Sintered Graphite Rupture Disk. The best choice for highly corrosive and broad temperature range applications.

Sizes: 1 1/2″ – 10″ (38 mm – 254 mm)
Burst Ratings: 1.00 psig – 30 psig (0.07 barg – 2.07 barg)

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Two-Way

Dual Rated to Protect Against Two Different Pressures in Opposite Directions.

Sizes: 1 1/2″ – 24″ (38 mm – 610 mm)
Burst Ratings: 0.25 psig – 1000 psig (0.02 barg – 69 barg)

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RT2

Replacement Element Type Graphite Rupture Disk.

Sizes: 1″ – 12″ (25 mm – 300 mm)
Burst Ratings: 1 psig – 250 psig (1.07 barg – 17.25 barg)

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RT2T

Replacement Element Type Graphite Rupture Disk.

Sizes: 1″ – 12″ (25 mm – 300 mm)
Burst Ratings: 1 psig – 250 psig (1.07 barg – 17.25 barg)

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Insulated

Best Graphite Choice for elevated temperatures. Required for temperatures exceeding 430°F (221°C) to 700°F (371°C).

Sizes: 1″ – 24″ (25 mm – 610 mm)
Burst Ratings: 0.25 psig – 150 psig (0.02 barg – 10.34 barg)

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Graphite Screw-Type (GST)

Designed for use with Inverted Type rupture disks. Ideal for pressure ratings from 20 psig (1.38 barg) to 1000 psig (68.97 barg)

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