Rupture disks are non-reclosing type pressure-relief devices. It is used to protect vessels, piping, and other pressure-containing components from excessive pressure and/or vacuum.
Rupture disks provide instant response (within milliseconds or microseconds in very small sizes) to an increase or decrease in system pressure, but once the disk has ruptured it will not reseal.
Rupture disks are commonly used in petrochemical, aerospace, aviation, defense, medical, railroad, nuclear, chemical, pharmaceutical, food processing and oil field applications. They can be used as single protection devices or as a secondary relief device for a conventional safety valve; if the pressure increases and the safety valve fails to operate or can't relieve enough pressure fast enough, the rupture disk will burst.
