Hi! I am installing a step in tub. The overflow and drain are exactly as a bathtub would be except that the overflow is ablout twice as high as a regular bath tub.

In addition, this one has what's called reverse plumbing, when I attach the overflow and the tub drain fitting (a tee) I then attached a 90 degree adapter and ran a 4 1/2 ft of pipe to the original drain, installed another 90. The P trap is in the slab lower down about 20 inches it appears and it could even be farther down the system somewhere I have no idea as I cannot access the slab for above or below.

There is a P trap as the building is only 10 years old and would have sure been inspected. I am running 1 1/2 abs for all pipe and fitting "except" the over flow, I used an 1 1/4 flex line for that.

Am I OK so far? Do I need to increse the overflow drain size, since it acts as a vent also?

Look forward to your replay

George

You have to get 27" jacuzi tub overflow, like the cable-driven Geberit. It comes with ABS rough-in.

I never seen 1 1/4" overflow. It is always 1 1/2". Make sure the trap is there before you connect drains. Pour some water into the pipe, take flashlight and see if there is a standing water.

What size is the pipe are you attaching to ? 1 1/2" of 2" ? Tub drain should be 2", vent 1 1 /2".