old shower drain (circa 1975)

I am re-tiling my shower floor and will be building a shower pan.

The existing drain is topped by a metal flange (collar) that is 2" deep and 3.25" in diameter.

This metal flange is attached to the 2" diameter pvc drain pipe.

Before installing the new shower pan drain do I need to remove the metal flange and attach the new adjustable shower pan drain directly to the existing pvc drain pipe or do I leave the metal collar and size the replacement drain over the metal flange?

I have attached a picture of what I speak of....


thank you

Is there a P trap under the concrete? If not, you will have to break out the concrete and install one.

If you want to go with a conventional clamping drain for the shower, it looks like the threads in that piece are beyond help (to me at least); you'd need to replace it with a new drain. Now, if I was doing it, I'd build a shower with Kerdi from www.schluter.com, and for that you'd need to take that piece off, add some pvc (maybe) and then install the Kerdi drain which is available in either PVC or ABS, depending on what plastic pipe you have.

For tiling help, check out www.johnbridge.com.

some of us were born considerably before 1975 and do not consider that to be any where near "old"