Need sage advice on how to removing an old leaking hot water shut-off = valve and salvage the nut. Can't budge the nut and has bimetal = corrosion. Would anything work better than std penetrating oil or WD40?
Normally I would cut the pipe and install new nut, etc. Long story, but = the pipe is inaccessible from both sides of the wall. Old built-in = vanity cabinets - big project to move. Can reach the nut & valve with = wrenches but not with saw or pipe cuttter without tearing out the = cabinet.
Thanks in advance!
Fred