ZOOK North America - Rupture Disks and Overpressure Protection Products Since 1952

Servicing Rupture Disk needs worldwide from manufacturing facilities located in 3 countries on 2 continents.

Graphite Rupture Disks

ZOOK Graphite Rupture disks are made from a single piece of graphite, a high-purity form of carbon, which is impregnated with phenolic resin. The resulting material, called impervious graphite, is impermeable and is resistant to most corrosives. For more information on ZOOK Graphite Rupture disks see our Bulletin no. 6000.
(Including Application Info., Installation Info., Technical Data, Corrosion Guide)


	mono type disks Best choice for low and intermediate burst ratings Mounts directly between standard ASME B16.5 flanges Process pressure is applied to the counterbore side of the rupture disk Operate up to 90% of marked burst pressure Vacuum supports are available for ratings below 25 psig Stocked ratings are available for immediate shipment ASME UD marking available Bulletin No. 6000 - Mono

	inverted type disks Best choice for higher burst rating Mounts directly between standard ASME B16.5 flanges Process pressure is applied to the flat side of the rupture disk Operate up to 90% of marked burst pressure Stocked ratings are available for immediate shipment ASME UD marking available Bulletin No. 6000 - Inverted

	Duplex type disks Best choice for applications involving highly oxidizing agents and halogens Mounts directly between standard ASME B16.5 flanges Disks extend corrosion resistance by utilizing a liner on the flat surface of the disk that contacts the process media Operate up to 90% of marked burst pressure External type vacuum supports are available for vacuum service ASME UD marking available Bulletin No. 6000 - Duplex

	two-way type disks Dual rated to protect against two different pressures in opposite directions Mounts directly between standard ASME B16.5 flanges Applications include protection of storage tanks against both excess vacuum and overpressure when single vessel entry is required Operate up to 90% of marked burst pressure Furnished standard with Carbon steel armor and TFE gaskets Bulletin No. 6000 – Two-Way

	insulated unit For temperatures exceeding 430°F (221°C) to 700°F (371°C) Furnished as an attached unit. Disk’s nameplate rating must be established at the cold face temperature of the insulation NOT available for TWO-WAY Disks or disks with ring or plate vacuum supports Insulated Units are supplied armored with -required insulation and gaskets for service above 430°F (221°C) to 700°F (371°C). Standard armor is carbon steel, gaskets are non-asbestos, and insulation is spun alumina/silica. This insulation prohibits use with liquids and some corrosives. Other materials are available upon request Bulletin No. 6000 – Insulated Unit

back to top

Home | Site Map | Request Quote | Contact Us