Mixing materials in DWV

[InspectorGadget]

I know that it's not good practice to use dissimilar materials when soldering, cementing, or chemical welding.

What about compression fittings?

I have ABS in the wall for drainage. Can I use PVC from the bottom of the sink, as a p-trap, and then connect the PVC directly to the ABS with a compression fitting? Any long term problems associated with this?

Steve

 

[Jimbo]

If you mean using tubular fittings under the sink and connecting at the wall with a slip-joint adapter, this is very normal.