High pressure access fitting and method

Details High pressure access fitting and method High pressure access fitting and method

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 41/08 (2006.01) F16J 12/00 (2006.01) F16L 13/02 (2006.01) F16L 15/08 (2006.01) F16L 25/00 (2006.01) F16L 58/18 (2006.01) F17C 1/10 (2006.01) F17C 1/00 (2006.01)

Patent

CA 2156101

A high pressure access fitting for a vessel, pipe or like structure includes a body of a material which is weld compatible with the vessel so the fitting may be welded to the wall of the vessel. The fitting includes an internally threaded section made of another material which is a corrosion resistant alloy and which acts to inhibit galvanic corrosion. The threaded section is an insert made of HASTELLOY®, for example, and is threaded in place within the body with fine threads and with a metallic C-ring seal protecting the axial inner ends of the threads. The outer end projects beyond the body and provides a corner for a fillet weld. In addition, the fine threads of the insert/body connection are protected by a high temperature expandable sealing compound.

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