Not exactly, but you can still connect them with proper fittings.
You can put up to a 2 inch pipe into a 4 inch. If you are putting 4 inch to 4 inch, either take out a section of the cast and put the PVC in or cut out a section and connect the PVC to the cast with rubber sleeves meant for this. You can use a saddle clamp for the 2 inch. It is a half round piece of PVC with a 2 inch connection in it. It is held on with two U bolts that go around the cast pipe. Put it where you need it and mark the 2 inch hole on the cast. Drill a series of 1/8 inch holes around this circle. when you get them all drilled, you can break out the plug. Try to keep it from falling into the cast pipe. Put the saddle clamp on and connect the PVC pipe as needed. Seal the saddle clamp to the cast pipe with plumbers putty.
The best way to connect a cast iron pipe to a PVC pipe using a cast iron to PVC adapter is to first clean and prepare the ends of both pipes, then apply a suitable adhesive or sealant to the adapter and securely attach it to both pipes according to the manufacturer's instructions.
You don't, you remove the plastic junk and replace the toxic plasatic with cast iron
Yes, it is possible. Unfortunatly, if you have a cast iron riser, you will have to chip out the concrete to get low enough to cut the riser to install a Clamp-all and a piece of PVC pipe. This might not be possible if you have a short riser. Then you would have to cut the cast iron behind the 90 degree turn. Either way, it's a pain in the butt. Call a plumber. It will be worth it.
There is a rubber connector available that will connect the two. It is a short rubber tube the right size on each end held on with a hose clamp on each end.Sorry to inform you there is NO such thing as a 21/2" CAST IRON piping IDThere is 11/2" cast iron 2", 3," 4", 5" 6" , 8", 10",Galvanized pipe comes in 11/2", 2" 21/2" 3" and years ago 7"
Male to female threaded adapters.
A cast iron toilet flange adapter is used to connect a toilet to a cast iron pipe. It serves the purpose of providing a secure and watertight connection between the toilet and the pipe. The adapter helps to ensure proper alignment and stability of the toilet on the cast iron pipe, preventing leaks and ensuring efficient waste removal.
When I have to connect copper to lead "D" I usually solder the copper to the lead or wipe a lead joint depending on the diameter To connect copper to cast iron ,.... If there is a hub I caulk the copper directly into the CI with oakum and poured lead (molten) OR one can solder / braze a female adapter fitting and screw the copper into a CI female fitting
Cast iron is not threaded, steel pipe is.
was asbestos used in production of cast iron pipe
Please take note that is a difficult task and should be carried out by a qualified plumber only. Furthermore, connecting an existing water line to a new toilet is fine as all inlets are standard and will give adequate pressure. As far as the the outlet is concerned, depending whether it is a straight line or if it has bends to the cast iron pipe, the first way would be to connect PVC to cast iron fittings, failing that, replacing some cast iron pipe would be better, so connecting four inch PVC from the toilet to the next available joint of the cast iron. Making sure that the corking of the two pipes is done very well to prevent leaks.