jtech1
Member
I have an old galvanized sink drain that runs about 10 feet and threads into the side of the main cast iron waste line (which goes straight down from toilet and 90 out of house).
The galvanized drain drains very slowly and a snake does not help. I want to replace everything from the sink down with PVC. My question is... should I cut the galvanized drain a foot or so away from the main cast iron waste pipe and attache the pvc there? If so, what should I use, since it would not be threaded. I am concerned with damaging the cast iron pipe if I try to remove the galvanized at the waste pipe, since that would turn this job into a nightmare to replace. Or should the galvanized easily unthread from the cast iron main waste line without issue?
Second question... there is no vent on this line. The galvanized pipe has a T-off that just 90 deg up and is left open. So, i am sure septic gasses are just flowing into the house. I'd like to put in a vent fitting that allows air in but does not allow liquid or gases out. Do these work? Again, not in a position to run an entire vent line.
The galvanized drain drains very slowly and a snake does not help. I want to replace everything from the sink down with PVC. My question is... should I cut the galvanized drain a foot or so away from the main cast iron waste pipe and attache the pvc there? If so, what should I use, since it would not be threaded. I am concerned with damaging the cast iron pipe if I try to remove the galvanized at the waste pipe, since that would turn this job into a nightmare to replace. Or should the galvanized easily unthread from the cast iron main waste line without issue?
Second question... there is no vent on this line. The galvanized pipe has a T-off that just 90 deg up and is left open. So, i am sure septic gasses are just flowing into the house. I'd like to put in a vent fitting that allows air in but does not allow liquid or gases out. Do these work? Again, not in a position to run an entire vent line.