We have tried cleaning, replacing valves three times, and nothing has worked. We have 7stations. Number one stays on unless we shut off the main water line. We finally canceled it and hooked up an irrigation timer (that usually connects to a faucet.) We turn it on manually and the pipe jerks so we know it is working properly. When we turn it off, the pipe jerks so we know water is on and off but Number one is still running. We are at our wits end. Anyone out there who can give us an answer?????

"If you call their 800 number they have excellent customer/technical service. They'll also send most parts free of charge." Thanks annz, but as I said in my post, I called Moen's Hotline already. The young woman with whom I spoke, gave me the impression she would not have known a faucet if she tripped over one! But she is sending me a replacement cartridge and knob!

The seals in shut off valves, at least older models, have a tendency to deteriorate over time just sitting there as they are used infrequently and the packing/seals can deform or go bad. The simplest fix for this is to shut off your main water valve, open a couple of taps that are at low points in the system to drain it, and remove and replace the valve with a new one. The newer models that have a quarter turn to shut off or to open typically have a nylon ball as a valve and you should not end up with this problem in the future if you do the replacement. Trust me, it should be a lot easier to put in a new valve than to try to repair the old one. It's usually a quick job as long as the old valve isn't rusted onto the piping. If you don't have some experience doing plumbing repair, it would be best to get a knowledgeable friend to help or pay a plumber as there are different size connections on these valves, and the connection to the piping can be screw-on or compression, or (less often) soldered on.

I'm a big believer in using penetrants and giving them time to work. Spray, give the connection a few taps to jar things around, spray again, walk away. Come back and spray/ tap when you think about it. Most of the time, the un-budgeable will yield with minimal effort. Tomorrow.