[DQDick]

Actually the failures of the valve that concern everyone is when they leak or just don't open. What would concern me is if they allow water to back siphon. This last failure wouldn't bother anyone until you got sick from it. The fact that turning the water off when not in use doesn't protect the user is the reason restaurants are required to have the valves on the faucet or in the lines no matter what. The problem actually occurs when the line is in use and there is a blip in the water pressure allowing water to flow backwards up the line. I removed my inside troublesome valve and replaced it with an outside brass valve of the type installed on restaurant hose connections. Being in the restaurant business all my life probably has me toucher than need be, but it's cheap and avoids any problems.