If you plan on being away for a few days, turn off the water supply to the house. This will…
Loops are generally laid into trenches that are 6ft wide by 6ft deep and are approx 300ft in length. The amount of loop depends on the heating / cooling load requirements for the home in question.
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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/
