Equipment reliability in many systems requires safety mechanisms to protect against potentially damaging conditions. This article examines custom engineered, miniature rupture disk assemblies designed for high cycling at low to high pressure in applications involving hydraulics and gases. For more than 85 years, rupture disks have served as an effective passive safety mechanism to protect against overpressure or potentially damaging vacuum conditions. The disk, which is a one-time-use membrane made of various metals including exotic alloys, is designed to activate within milliseconds when a pre-determined differential pressure is achieved.
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