My kitchen sink at the back of the house drains into a 2″ line that goes down into the basement. It then runs along the basement ceiling under the kitchen floor for about 18′ to connect to a 4″ line that is running 90 degrees to the 2″ line. The 2″ line has clogged several times, probably at the connection between the two pipes. There is no clean-out in the 2″ pipe so the only way to clean it is by snaking from under the sink. Should there be a clean-out in the 2″ line and if so where should it be located? Thanks, Larry. From what I can tell… That line should never clog up. It is just a straight pipe, so there is no place for things to hang. They normally hang at junctions or elbows. Take the “P” trap apart under the kitchen sink(that is that “S” looking connection. Usually that is hand screwed together with large plastic nuts(the older ones would be in brass). Have a catch basin right below where you remove the “trap” because it holds some water. Dump out the water and go to the bath tub and wash that trap out on the inside. You may find diamond and gold rings if you are lucky. . Or just general sludge. The sludge happens from not using enough water to flush out the lines after you wash some dishes full of food(crap = rotting food and soap) That means the whole 18″ of straight pipe has had water traveling at the speed of the Mississippi. . Slow and lazily. . So that the food stuffs lay on the bottom of the pipe. Don’t use that sink for a couple of days and that bottom sludge dries and hardens making the pipe smaller. And smaller (that is, if it is occurring in the straight pipe) I think most of your problem is in the trap. Single people have this problem the most because they use very little water (especially the guys) But the girls have that long hair which falls out when they shower and get stuck in the traps. IF your 2″ had a clean-out, it would be on a “Y” pipe or on an elbow. If you have a “garburator” more reason that there is junk in the line. Habitually using more water would correct the situation.
How to remove a compression fitting, from a plumbing pipe, can be done. How do I know this?. . . . . Because I removed a compression fitting from a plumbing pipe . . .