Bs&b Safety Systems, Inc.

Donall Culliinane

Stephen P Farwell

John T Daly

John Tomasko

Mitch Rooker

Barry Lowe

An improved rupture disk assembly for a pressure relief system is disclosed. The rupture disk assembly is sealed between an inlet support member and an outlet support member, each of which define a central fluid pathway. A rupture disk that includes a flange connected to a dome-shaped rupturable portion by a transition area is sealed between the support members. The rupturable portion may include an indentation positioned at the apex of the dome and a score line having a first and a second end. A safety member that has a hinge including a knuckle and a tongue is positioned between the rupture disk and the outlet support member. The knuckle extends downwardly into the dome and extends laterally across the dome to a point that is inside the area circumscribed by the score line or inside the area circumscribed by an arc connecting the two ends of the score line. The rupture disk assembly of the present invention provides a low flow resistance K,in both gas and liquid applications, a low damage safety ratio, and a high operating capacity.

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Limerick, Ireland

Donall Culliinane