My first order of business after moving into a new house this weekend was to replace the toilet. It's an older house and there are 2 water lines feeding the toilet for a supply.

There is no flexible supply line going to the toilet. It seems the only way to put in the new one without problems would be if the new tank and bowl were of the same dimensions (which they are not).

I'm wondering how difficult it would be to replace this with something newer that I can hook up a supply line to. Are there any options for using this existing setup with a new toilet?

Hey Pbjanda:

What you have there is a hot and cold water pipe connected to a mixing valve of sorts. This is an older valve, but we still install these today when we have areas where water condensates onto toilet tank and causes issues like puddling water or worse, damaging floors. Basically, cold water and hot water mix to make warm water before water enters toilet which does not allow the water vapor in room to settle on the tank and condensate (basically).

You could install a new mixing valve if you think this is a humid area of the basement, or if the toilet will be used as a main toilet, for example.

OR, you could remove the mixing valve, cap the hot water line (looks like a 1/2" brass plug will work here) and then transition the cold water over to a 1/2" female x 3/8" compression straight stop (see pic... it is an angle stop... you need a straight stop... ;)). You should also purchase a 3/8" compression x 7/8" compression (with toilet nut attached) x 12" long FLEXIBLE CLOSET RISER (see pic.).

It should be that easy if just using the cold water pipe.

Use two wrenches or pairs of pliers when tightening or loosening/removing parts.

Use teflon tape for new threaded joints

Let me know if need more information!. Good luck... MARK

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