Hey ya'll, I'm trying to correctly plumb in a double lavatory setup, where a single lavatory was. The plan is to tie into the 2" cast iron pipe and continue the vent upwards through the existing roof penetration. I am showing a double fixture tee, as reading other threads, it seems a double sanitary tee is not appropriate.
Do I need a test tee as shown? This has to pass inspection with the city, so I think I have to pass a water test with a 5-foot head for 15 minutes. The plan would be to add an inflatable plug and cap the trap arms. Then fill from the roof.
Do I need a test tee as shown? This has to pass inspection with the city, so I think I have to pass a water test with a 5-foot head for 15 minutes. The plan would be to add an inflatable plug and cap the trap arms. Then fill from the roof.