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Back flow

Posted by Chet on March 18th, 2003 05:50 PM
In reply to back flow preventer by j. m. Olsen on March 18th, 2003 03:33 PM [Go to top of thread]

If you put a back flow in and it closes when the water backs into it, how will your daughters drain pipes work. IM saying if there is enough
pressure from the lines to back up in her house, a back floe will keep the sewage from getting but how will hers get out. I think you have to contact the local municipalites to find where the main line in the streer is draining to slow.

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