Log in

View Full Version : Sanitary tee


chewyfish
Aug 5, 2013, 11:11 AM
I am replacing drain pipe to my bathroom sink. After I removed the old drain, I discovered a cast iron sanitary tee which comes flush to the wall under the sink. This sanitary tee has no threads. The previous plumber just shoved a 1 1/4 inch aluminum drain pipe into the end of the sanitary tee and caulked it in.

Were sanitary tees (60-70 years old) made without threads or is the tee damaged? Any idea how to attach a drain?

Thank you.

ma0641
Aug 5, 2013, 11:42 AM
Back then it was most likely leaded in. Aluminum pipe or chrome brass? Fernco makes a "donut" adapter that swedges into the hub and then the trap arm is pressed through.it. I have also used a PVC trap adapter and after making sure the hub was very clean, epoxied it into the hub.

massplumber2008
Aug 5, 2013, 12:30 PM
Hi CF

I could guess at what is happening here, but if the sanitary tee really doesn't have threads or some way to easily install a drain pipe then you can either install a rubber donut (inserts into hub of tee), or if there is no hub present you can purchase a SHIELDED cast iron x PVC clamp (see image) and connect the clamp onto the branch of the tee fitting and proceed to pipe all up with PVC after that.

Mark

chewyfish
Aug 6, 2013, 07:50 AM
Using a clamp is not possible because the tee is 4 inches in diameter. I thought about tapping the tee to create threads or using lead to attach a fitting, but both of those solutions are beyond my abilities. I finally ended up caulking the drain into the tee. Not the best solution, but now my wife can use the sink.

Thank you for the suggestions.