Shortmag12
New Member
House was built in 1941 with no kitchen sink vent. The kitchen sink drains to basement and shares the drain with a laundry sink for the washing machine water. I would like add a vent to the kitchen sink which sits below a window. Can I run the vent horizontal below flood level for 5 feet then go vertical to ceiling then horizontal 10 feet to sewer stack? If so will 1-1/2" work or do I need 2" ? Drain pipe is 2". Also AAV are not allowed in Minnesota. See drawing. Thank you!