...original cast iron line with 2" pvc.? now the sink drains real slow, do i need to add a 45 degree fitting towards the top of the line to vent the line to help the sink in draining?
...original cast iron line with 2" pvc.? now the sink drains real slow, do i need to add a 45 degree fitting towards the top of the line to vent the line to help the sink in draining?
