There is some sort of pierce fitting on the cold water supply to my kitchen sink. It began leaking yesterday (I hope no sooner) anyways, I need to fix it.
My plumber friend said I could plug it, but that I should just call a plumber to completely remove it with a few inches of pipe and a quarter turn angle stop, which is probably what I will do. I tried to google pierce fittings, but that didn't really yield anything. Does anybody know what this is called? That way when I talk to the plumber on the phone they know what I am talking about?