Quote:
Originally Posted by bowlingal
when using liquid plumber, to flush, I boil water and then pour it down the drain. Plain hot water doesn't do it
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Note that PVC pipes are only rated up to 140 degrees F, but boiling water can be as high as 212 degrees. It can deform the pipe and/or melt the glue. Pouring boiling water down a clogged pipe can increase the chance for damaging the pipe.