Avoid using 90* elbows when installing stove pipe. Use 45* elbows whenever possible for horizontal…
All EPA approved woodstoves have some form of a re-burn system engineered into the stove. Some use Catalytic combustion technology and others use a secondary burn technology. Both work very well but differently.
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The gray water line is Polybutylene (Poly-B for short) and is no longer manufactured. The product line was discontinued due to the potential for breakdown given certain chlorine levels in the water and a particular kind of fitting, both of which were not an issue in Canada. These pipes, given they are correctly installed, will most likely outlive the house here in Canada and should not be a cause for concern. Poly-B has given way to a number of different waterline manufacturers, the most common one being Crosslinked Polyethylene, better known as Pex, used extensively as a substitute for more expensive plumbing systems such as copper.
See the following link for more info:http://www.pexinfo.com/
