HOLDER WITH V-KNIFE BLADE FOR BI-DIRECTIONAL RUPTURE DISC ASSEMBLY

摘要

This invention relates to a cylindrical holder member (12) for a bi-directional bulged rupture disc (46). The support body of the holder has a rim (14) that supports the rupture disc with the concave surface (48) of the disc facing the holder. The support body is provided with a unitary one-piece, centrally creased cutting element (16) that is of generally V-shaped configuration in plan view. The cutting element has a pair of elongated converging leg components (18,20) with each leg component being connected to and supported by the interior wail surface (22) of the holder body, with each leg component having an arcuate cutting edge (18a,20a). The cutting edges of the leg components merge at the crease (24) in the cutting element to define a central cutting edge peak section (26). The cutting element is positioned in the holder with the cutting edge peak section extending beyond the rim of the support body into the concave area of the disc.