DC907
New Member
This is a request for advice prior to seeking a few local estimates. I would like to have a utility tub installed in the basement directly below the kitchen sink in our mechanical room. The kitchen sink waste line is 1 1/2" pvc fed into a 2" vertical PVC line with cleanout 24" above slab that goes under the slab into the main waste line. There are currently no other branches off the 2" PVC. I know that a vent pipe from the basement to the required height above the kitchen sink would require a major tear out and would not be worth the cost. The main vent stack is 30 feet away at the other end of the home. There is an accessible vent pipe (2" PVC) off the main stack serving a half bath in the basement, but the kitchen sink is vented independently (through the roof). I have read about air admittance valves and they are permitted in my county in Ohio and sold locally. My questions are below:
1. Could a solution be a 2" to 1 1/2" Wye on the kitchen waste line to serve the utility tub with an AAV accessible behind the tub's trap?
2. Could a solution be to vent the utility tub with a connection to the accessible vent line at the opposite end of the basement even though the kitchen sink is vented directly through the roof?
3. Am I better off scrapping the utility tub until such a time when a proper vent can be connected above the kitchen sink during a future kitchen rennovation?
Thank you for your advice.
1. Could a solution be a 2" to 1 1/2" Wye on the kitchen waste line to serve the utility tub with an AAV accessible behind the tub's trap?
2. Could a solution be to vent the utility tub with a connection to the accessible vent line at the opposite end of the basement even though the kitchen sink is vented directly through the roof?
3. Am I better off scrapping the utility tub until such a time when a proper vent can be connected above the kitchen sink during a future kitchen rennovation?
Thank you for your advice.