Proper Y-orientatiom

[penobscotman]

When a drain line (from a fixture) is connected to a branch line on its way to the stack, should the Y be oriented vertically or horizontally?

 

[Cacher_Chick]

The branch can enter anywhere from 90 degrees to either side, above the centerline.

 

[Sponsor]

 

[hj]

Y's and combos can have any orientation. Only sanitary tees CANNOT be used in a horizontal drain line.

 

[penobscotman]

Thanks, folks.