My laundry room has a faucet but I just removed it and want to cap both the hot and cold lines. I capped the hot one with a compression fitting but the cold one sprays water out of the rubber on top of the fitting. im using 1/2 inch cappers. any help?
If you used a shark bit fitting, or someothe kind of push fit cap then you may have caught the internal o-ring on a end of the copper. Get another fitting, shut the water off, drain it out, make another cut, before you put the fitting on get some sand cloth and lightly sand the outside of the pipe so when the fitting goes on you dont catch it.
Not sure what you're dealing with on the cold line, as neither a compression fitting nor a threaded pipe thread cap has a rubber part. Why didn't you use the same approach as you did with the hot line? What's different? Meanwhile, per the other posters' suggestions, the preferred pro approach is a simple soldered cap on the end of a plain copper pipe. .
