Pipe joints or couplings – Pipe to discreet nipple or sleeve to plate
Patent
1994-12-14
1997-08-05
Arola, Dave W.
Pipe joints or couplings
Pipe to discreet nipple or sleeve to plate
285189, 285329, 285422, 285917, 28514811, 28514819, 2852881, 2989014, 228135, F16L 304
Patent
active
056534779
ABSTRACT:
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.RTM., 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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Article "Model 50 COSASCO.RTM. Two-Inch System Access Fitting Assemblies," Rohrback Cosasco Systems, Inc., Bulletin #600-A.
Article "Model 58 COSASCO.RTM. Two-Inch System Access Fitting Assemblies," Rohrback Cosasco Systems, Inc., Bulletin #612.
Arola Dave W.
Rohrback Cosasco Systems, Inc.
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