Pipes under bathroom sink

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Pipes under bathroom sink
Author: notaplumberLOL (OK) I have an older home with copper pipes. In my front bathroom there are 3 extra pipes under the sink that I was told goes to my back bathroom. How can I figure out which one of those pipes is connected to my back bathroom shower? Thank you for your help!
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Re: Pipes under bathroom sink
Author: george 7941 (Canada) Easy. Run the shower and see which pipe changes temperature.
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Re: Pipes under bathroom sink
Author: notaplumberLOL (OK) I did try that (and sorry I said 3 there are only 2) and they both get hot.
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Re: Pipes under bathroom sink
Author: packy (MA) what happens when you run water in the other bathroom sink or flush the toilet? the only thing i can think of is to install a couple of shut offs and see what happens when you shut the water? if you're at all handy, its easy to cut short pieces out of the pipes and install sharkbite ball valves.
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Re: Pipes under bathroom sink
Author: ArthurPeabody (NM) Run the cold and see which gets cold. Turn it on as high as it will go and feel the pipe. You may be able to feel the water flowing.
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