ZOOK is a global leader in the manufacturing of metal and graphite rupture disks and related over-pressure protection product ... s. We are dedicated to becoming your single source for all your rupture disk needs. ZOOK Manufactures: - a full line of high-performance Metal Rupture Disks and Holders designed for fragmentation-resistance - a complete line of Graphite Rupture Disks - a complete line of flat, crowned, and insulated Vent Panels - rupture disk Alarm Sensors compatible with ZOOK or any other manufacturers type of rupture disks - a full line of "standard" and custom Extruder Barrel assemblies - bi-directional, low-pressure rupture disks; capable of ruptures as low as 1" water column - accessories: Gauges, Excess Flow Valves, and Pipe Guards to compliment your rupture disk purchase ZOOK Provides: - free inventory analysis allowing optimum economical stocking levels and buying opportunities - on site rupture disk training programs - on site application analysis for purchasing the optimum performing rupture disks for your application read more