While the construction work isn't scheduled to begin until late summer, we decided to tackle some of the initial irrigation work now, by installing valves for the new lines. In order to do this, we traced the main line, excavated around it, and cut out a section of pipe. For the putting green/#1 tees, this was replaced with a tee, a gate valve and two couplings. (This project was a great opportunity to use some of the couplings we purchased last year from an ad on Turfnet.)
For the short game area and #10 tees, we added a new main line gate valve in addition to the valve for the new irrigation.
So why did we do this work now? Had this been done in-season, when the irrigation system was in use, we would have had to isolate a significant portion of the system to install these valves, and deal with a whole lot of water when we cut the pipes. A winter install meant no water in the lines, and no need to shut down part of the system.
By having these isolation valves in place ahead of time, the irrigation contractor will be able to add the new lines without shutting down any of our existing irrigation, then simply open the valves when they're ready to go.
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