Originally Posted by TheEplumber
I don't understand the first sentence..
I'm surprised you have standing water in the pipe since plumbing pipes are graded to drain and 3.25" is not a standard plumbing pipe size- more like 3.5 OD unless it's thin wall PVC which has been used for exhaust fans
I didn't know they had indoor plumbing in 1870's
If it's close to that age it's probably not vented at all.
If everything works fine do you want to go to the trouble to vent it to modern code? Then again, the system may be ready to fail if its 140 yrs. old. Maybe a repipe is in order? Drains and water
Oof, sorry about that first sentence. Was suppose to read that the pipe I have is a very long distance from the main bathroom on the first floor.
I assume the house did not have indoor plumbing when built and it's been redone. The drain pipes are all PVC, so they aren't ancient.
If I don't need a vent on the primary bathroom, I guess I'll just wait until I redo that bath, which has to happen someday anyway. Should I make sure there isn't a vent pipe hanging out in the wall somewhere? I need to tear into something anyway as the exhaust fan terminates somewhere in the roof, which has no attic or second story. Ugh.
As for the 3.25" pipe, it's a thin wall PVC and when I look down it I can see water reflecting but it may just be wet, not standing. The water I see is not the width of the diameter of the pipe. Sounds like a vent pipe, right? Should I have someone flush the toilet while I'm up there and see water rushes by? I should extend that outside the house if so, right?
Thank you very much for your help.