And here's the rest of the story. It was a plumbing disaster worthy of your most hearty ribbing. Home Depot guy said you don't cap it, you put a shut off valve on it and leave the valve shut off. So I tried, without success, to install the shutoff valve on my now hacked off supply lines. Each time I turned the water on, it leaked like crazy. And then in what will not be noted as my finest hour as a plumber, I further tightened one of the lines only to have the valve fly off.
It's amazing how much water pressure there is in a residential area.
2.5 hours, $11. Failure. Squishy carpet for 15 square feet.I called a plumber in. He told me that the valves I had been sold would not work attaching to a poly-B line - if I somehow managed to get them leak-free, there's no way he'd sleep well knowing they were there. Could come off at any time. He re-cut the line correctly, attached a brass poly-B-to-PAX connector, crimping both sides properly with these rings, using a very expensive crimping tool. Then he connected a proper valve to the PAX side, crimping again. Repeat on the other supply line.
20 minutes, $132. Success. Carpet still squishy; not his fault.I feel like a putz. Take your shots - they are well deserved.