what is the best way to pressure test the drain line in a remodel. the old part of the house is abs and is in service. the new part of the house and the remodel is pvc and is hooked in to the abs 3 inch.
Would this be considered a flat vent? There is nothing above the vent and this is a shower drain. The 2 inch pipe is longer than 5 foot to the 3 inch main drain in the house.
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