Safety device for pressure vessels

摘要

A safety device for ensuring relief of excessive pressure in an associated vessel, the device incorporating a reverse buckling disc clamped between inlet and outlet support means, a plurality of knife blades being provided to the outlet side of the device for rupturing the dome portion of the disc on reversal. A deformable ring member is also provided to the outlet side of the device, said ring member being located and dimensioned to dampen or retard the movement of the dome portion during reversal, thereby to prevent the segments of the dome portion formed on rupturing from being torn away from the flange portion of the disc.