Pipe thread -Wear sleeve?


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By paul2748 - 13 Years Ago
The threads on a wear sleeve and the bad heater control valve brought something to mind that I always wondered about.



Is there any solutions to making pipe threads that are worn but not stripped better? In the past I have had some pipe threads that the fitting goes right down to the last threads, indicating a worn but not stripped threads. One such problem is the intake manifold heater control valve hole where the valve screws down to the last thread.



Is JB Weld a solution or is there something that is better. The only thing about using JB Weld is if you need to replace the fitting or whatever else is screwed into the hole how do you get it out?
By charliemccraney - 13 Years Ago
Lots of teflon tape.
By Ted - 13 Years Ago

I’ve used threaded inserts for conventional thread repair but just haven’t had the right opportunity to use them for pipe threads.  Here are links to a couple of different thread repair kits for pipe threads. 

http://www.timesert.com/html/taperpipe.html

http://www.lns-sea.com/fst-id.htm 

 

And then there’s the liquid goop made by Loctite to seal the existing worn threads.   http://www.grainger.com/Grainger/LOCTITE-Stripped-Thread-Repair-Kit-1YDZ5 

 

If I was in a time bind, I’d consider tapping to the next size and using a bushing to get back to the original NPT size.