This is my first post and I want to thank everyone for the valuable information on this forum. I have started to gut my basement bathroom and I would like to disconnect the water lines to the sink. Currently there are no shut off valves. When I disconnect the sink, should I just cap off the lines or install shut off valves? I will not be installing a new sink/vanity for another 6 months to a year. Which is the best method? Thanks for your help.
Since you're going to be using the supply lines again in a relatively short time (a year or less), and you should have shut-off valves anyway, that's exactly what you should install...shut-off valves.
If the supply lines are copper, you can use compression fitting valves, which don't even require any soldering. If they're anything else, you can use threaded shut-off valves.
Just turn off your main water supply valve briefly and install them.
Personal preference, I'd cap them. Caps are smaller and you do not need as big of a hole to install your wall board. Just make sure they stick out far enough over the finished surface to remove or cut off the cap for the shutoffs and escutions.
Maybe it's Just Me,...
But,.. about anytime I have to cut a line, whether to cap it or otherwise,....
I add a Valve....
That way, regardless of which way I go, at Whatever time,...
I have another way to isolate a leg in my water system,...
Repairs/ installations/ alterations can be done without shutting down the Whole House......
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