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Maplelongjohn t1_j63y2ip wrote

Reply to comment by Apprehensive-Egg374 in How can I add a second 1/4 inch water line to under my kitchen sink? by Apprehensive-Egg374

Now if anything goes wrong what your concerned about is the 2 pipes coming out of the walls.

These are probably corroded and mostly clogged up. The threads might stay in the valves when you go to remove it.

You may be able to unthread the pipe from the wall and replace that.

The pipe may snap off inside the wall as soon as you touch anything, and necessitate opening the wall and running new pipe to the sink.

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Apprehensive-Egg374 OP t1_j642crx wrote

So I’m in an apartment (I own it) and I don’t have access to behind the walls. And the end of the pipe is behind the walls. So if when I try to take off the shutter valve, the pipe cracks, or the threads for the pipe comes off with the shutter valve, the other end of the pipe is far behind the wall and I don’t have access to it to replace the whole pipe. Would there be a way to solve this issue in case it happens without removing the wall to change the pipe? Like is there an adaptor or something that I can use to attach to the pipe if it breaks off to give me a threaded end to use?

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Maplelongjohn t1_j646kdd wrote

You'd be opening the wall through the back of the cabinet then.

It's probably worth every penny to have a plumber come deal with this.

They know all the tricks to help prevent the worst case.

They have insurance too. In case the worst happens and you flood the neighbors.

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