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I’m having my sewer clean out moved out from underneath our home. I want to be able to dump the RV in it. What size line should we use, 3” or 4”?
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The sewer line from our cottage to the septic system is 4" PVC running right behind the RV pad. I had the contractor install a 4" sanitary 'T' and riser with a 4" cleanout cap where it's convenient to connect the stinky slinky when he installed the new system.
