Sagging Sewage Procedure Strains-- Filth adjustments can create your drain line to sag. When this happens, the segment which has sunk accumulates paper and squander resulting in a blockage.??????? ????? ????????? ?? ????? ???????, ?????????? ??? ??????????? ??????, ??????? ??? ?? ????????? ??? ??? ???????? ??????????.??????? ??? ??? ????? ???? ????