Re: heat resistance of pipe dope

Ernie Willson wrote:
Before you start heating Teflon tape up to the temperature that melts solder you might want to read this article;

http://www.yourlawyer.com/articles/read/9769

Cut and paste the address into your browser

EJ in NJ


Studies have concluded that C-8 is one of several toxic gases released by Teflon when it is heated to temperatures which, at their low end, are only slightly above normal cooking temperatures. C-8 has been shown to cause tumors in rats and fumes from Teflon coated cookware can cause what is known as "polymer fume fever," a condition which has been shown to kill birds even at low temperatures but which DuPont claims is harmless to humans if the cookware is used at a temperature of up to 500F. When Teflon is overheated (above 700F), fatal cases of polymer fume fever in humans have occurred (at 842F). In 2005, however, the Environmental Protection Agency stated that tests on laboratory animals linked PFOA to liver, pancreatic, and testicular cancer, reduced birth weight, birth defects, and immune suppression.

Thank you.



David Nebenzahl wrote:
On 2/13/2009 8:15 PM Matt spake thus:

I intend to use pipe-thread compound on the threads when I install
the adapters. Then I would wrap the valve with a wet rag and solder
the tubing ends of the adapters onto the copper tubing.

The pipe threads will get hot during the soldering operation.

What kind of pipe dope is supposed to be resistant to this kind of
heating?

I'd use teflon tape and not worry about it.


.

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