Talk:Chlorinated polyvinyl chloride

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[edit] Why is CPVC (vs. PVC) used for drinking water?

Could an expert add to the article some statement explaining why CPVC is sold for drinking water use whereas PVC is not? Robert K S 18:09, 4 November 2007 (UTC)

I'm probably not the world's foremost expert in this, but I have definitely seen PVC used for potable water. They tend to use the CPVC for extra fire retardancy in occupancies that are below a certain height, depending on the local building code. Plastic pipe has a big lobby of course. I know one thing, that when you run a fire test with plastic pipe, it does not matter whether it's CPVC or PVC, it makes ONE HELL OF A MESS. I find the use of plastic pipe morally reprehensible and indicative of character, but that's just my opinion based on decades in R & D and construction. I know test laboratories, where they would run such tests at night, so they would not get written up by the EPA with all the smoke..... --Achim (talk) 02:15, 12 June 2008 (UTC)