Simple. Rip out the old and relay with PVC using good quality piping. Where you need to join to old fittings and new there are joints that marry the two.
Nothing dissolves rust in drain pipes. Once pipes become so old and rusty that they constantly keep blocking up, its time to replace and install PVC waste pipes.
Poly vinyl chloride. -Very common for irrigation and drain pipes.
Yes, you can attach PVC pipe to ceramic pipe with a fernco. You just have to make sure the inside diameters of the fernco match up with the pipes you are joining.
PVC pipe is not affected by acid. Why would you pour acid down your drain in the first place? It will not cure any problem you have.
Could be a drain for the inducer motor if it has one and it depends do you have a a/c coil on your furnace if so it could be a drain for it.
You are mistaken, - Many PVC pipes are marked DWV ( not DMV ) This is an acronym for Drain, Waste, Vent. -These pipes are not suitable for high pressure usage and this marking means they are only intended for light use.
PVC is a compound.The pipes are not a compound but they are made from a compound.
Pvc pipes are cheaper. They are easier to join. They last longer.
PVC stands for polyvinyl chloride, which is what PVC pipes are made of.
Because modern PVC and PEX pipes are much more efficient and easier to work with.
flange off tool.....Locke Supply carries them
I would take out the lead bend and replace it with pvc.