Can you cap a refrigerator water line?

You can get a refrigerator water line cap at Home Depot or, if it’s more convenient, you can also get a refrigerator water line cap at Lowes, your local hardware store or a plumbing supply outlet. Most refrigerator supply lines are 1/4 inch in diameter, and they terminate with a male or female compression fitting.

How do you cap a water supply line?

How do I turn off my copper water line to my refrigerator?

Use pliers to grab the metal nut on the end of the copper pipe where it connects to the back of your freezer. Twist the nut counterclockwise to loosen the connection, then pull the pipe out of the freezer.