drainplumbingremodelingshower
I am updating my basement shower and need some help to connect a new drain. I have cast iron that runs under the foundation. Where it comes up in the shower I have no way to connect to it. Once the drain is installed I am planning on pouring a new shower pan with liner. The cast iron is 2". Here is what I have now.
are you talking about an outside wall? I only see one semi question relating to flush cutting the existing pipe. Fernco or similar fittings can make the connection, but they need a portion of the pipe to make the connection
An Approved location that I'm aware of is like a Floor Drain. Though Ariel is Correct, you would need an Air Gap. So the pipe would have a 1" min Gap to the Drain so that any back flow of water could not touch the exit pipe. The Main issue here is keeping the sewer gases in the system and not outside. This is what the p-Trap is for. Its a water barrier to prevent sewer gases from escaping the system. The Water Heater Drain pan does not typically have water and any p-Trap installed in that line would not have any water in it to fill the p-Trap.
My HVAC system is in the Attic and it sits in a large drain pan so if the AC leaks water will drain out. They plumbed the 3/4" PVC drain to a Soffit vent over a window. The purpose for the over the window was it would be obvious to someone that there was a leak.
Hope that helps.
Best Answer
I typically use something like this for drains when I have to go into hard to access cast iron pipe. You stick it inside the cast iron pipe and then insert PVC into it. Make sure it fits very tight inside the cast iron pipe if you go this route.