jongig said:If I were you I'd replace the plumbing on all three valves at the same time and it would be so much easier. The valves look like 2 inch/2.5 inch valves. Cut the three off and cap the three pipes coming out of the ground with schedule 80 male threaded adapters. you can use threaded pvc niples between the valves and then they can be reused by cutting the threaded niples and replacing the niples which costs very little.
Heh, I'm no plumbing genius, so I'll have to mull over what you're talking about here. Can't really envision it now, but it sounds interesting.