The washing machine and a wash tub in the basement have no vent. They are located a foot or less from the main 4 inch stack and connected at the base of the stack with a 1.5 inch ABS threaded adapter to the San Tee in the cast iron stack.Sometimes there is a little bit of a smell from the wash tub, so I assume the traps are getting siphoned at times. I am guessing this setup is at least 25 years old.
Does this sound reasonable as a fix to this very old setup?
If I can get the 1.5 threaded adapter out successfully, upgrade it to a 2 inch.
I can not really tell without removing the sink, but would the threaded adapter be screwed in to the cap on the 4 inch San Tee (the way the cleanout plug is) or lead and oakum chaulked in place?
Add a San Tee to the trap arm from the washer (which is connected by a wye to the trap arm of the wash tub), I can go straight up about 4.5 feet, then I would have to go across about 5 feet and I can tie in to a 2" vent that runs to the roof.
It appears that the builder relied on the stack as the vent for drain purposes of the sink and then the washer when added, but what happens when my daughter on the second floor drains her deep soaker bathtub which must hold 60-70 gallons of water?
Does this sound reasonable as a fix to this very old setup?
If I can get the 1.5 threaded adapter out successfully, upgrade it to a 2 inch.
I can not really tell without removing the sink, but would the threaded adapter be screwed in to the cap on the 4 inch San Tee (the way the cleanout plug is) or lead and oakum chaulked in place?
Add a San Tee to the trap arm from the washer (which is connected by a wye to the trap arm of the wash tub), I can go straight up about 4.5 feet, then I would have to go across about 5 feet and I can tie in to a 2" vent that runs to the roof.
It appears that the builder relied on the stack as the vent for drain purposes of the sink and then the washer when added, but what happens when my daughter on the second floor drains her deep soaker bathtub which must hold 60-70 gallons of water?