Gray PVC fittings in residential plumbing -- kosher?
Personally for drainage I prefer PVC over copper, galvanized, lead, or
cast iron.
all of those eventually clog or go bad.
PVC is smooth inside and drains better clogs less........... appears
to last forever if properly installed
cast iron is better for runs thru living spaces, if you replace cast
iron with PVC it will be dramatically louder
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