Abstract: A rupture disk assembly for use in a pressurized fluid passageway within an application environment having a temperature operational range. The disk assembly includes a cylindrical one-piece disk consisting of unimpregnated graphite, a single bore extending partway into the top surface of the disk, a casing, and a metallic layer overlaying the planar bottom surface of the disk. The disk assembly has a particular burst pressure that is generally temperature insensitive over essentially the entire temperature operational range. The temperature operational range may be from about ?425° F. to about 900° F. The burst pressure may have a tolerance of about +/?5% over the temperature operational range.

Abstract: A rupture disk assembly for use in a pressurized fluid passageway within an application environment having a temperature operational range. The disk assembly includes a cylindrical one-piece disk consisting of unimpregnated graphite, a single bore extending partway into the top surface of the disk, a casing, and a metallic layer overlaying the planar bottom surface of the disk. The disk assembly has a particular burst pressure that is generally temperature insensitive over essentially the entire temperature operational range. The temperature operational range may be from about −425° F. to about 900° F. The burst pressure may have a tolerance of about +/−5% over the temperature operational range.

Abstract: A stacked rupture disk assembly of the present invention is adapted to be positioned between flanges in a vent pipe or pressure relief port of a pressure vessel. The stacked rupture disk assembly includes a first rupture disk assembly and a second rupture disk assembly mechanically affixed to the first rupture disk assembly. Each rupture disk assembly includes a graphite rupture disk defining an annular support portion surrounding an thinner rupture membrane adjacent and flush with a first end of the annular support portion. The annular support portion and the rupture membrane define a substantially planar outer surface of the rupture disk. The annular support includes a recessed region extending from an opening in a second end of the annular support to the rupture membrane. Optionally, the second rupture disk assembly includes a support member having spaced apart first and second ends and adapted to be inserted into the recessed region such that the first end abuts and supports the rupture membrane.