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Posted by Heat and cool on August 13, 2007 at 19:37:59:
In Reply to: Removing radiator Valve inorder to install new subfloor posted by Eddie on August 13, 2007 at 17:53:00:
The valve is brass and the nipple steel, so they grew together with age. The nipple is age-welded by rust to the el below. Shield around the nipple with metal sheet and wet rags. Remove the 'guts' of the valve (it gives you a chance to see how the string packing goes around the stem and see if the seat is workable.) Heat the valve and keep the nipple cool. Don't get the valve red; but don't worry about weakening it, It only has to stop a few pounds of steam pressure. Eventually, the expansion and contraction can loosen the threads, or what's left of them.
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