Acute angled vessel connector

An acute angled vessel connector adapted to be mounted in a vessel or pipeline and to provide a high pressure angled connection from such vessel or pipeline to a branch pipe, comprising:

• a generally cylindrical main body having an interior body bore formed of an interior cylindrical wall and having an exterior wall which is at least in part cylindrical, said interior body bore having a central axis;
• a contoured mounting rim formed integrally with one end of said main body, said mounting rim being generally elliptical in configuration and being at a predesignated acute angle with respect to the central axis of said interior cylindrical body bore, said mounting rim being adapted for welding in a flush position in an opening in a vessel or pipeline such that said generally cylindrical main body and said interior cylindrical body bore extend at said predesignated angle acute with respect to the surface of such vessel or pipeline;
• said main body having at its other end means for connecting said vessel connector to a branch pipe;
• said contoured mounting rim including a generally annular mounting ledge having an undersurface with an outer edge which is generally elliptical and an inner edge approximately concentric thereto, said inner edge being formed by the intersection of the undersurface of said generally annular ledge and said interior body bore;
• and
• said inner edge of said generally annular mounting ledge includes a fluid impact zone wherein the radius of curvature of said inner edge is substantially larger than the radius of curvature of the remaining portions of said edge, said radius of curvature of said inner edge being measured in a direction perpendicular to the plane of said curved undersurface.