I would file that under brilliance. You can have the outside valves set at exactly the right pressure (no screwing around getting the sprinkler to just the right level) plus you turn on all your sprinklers in one shot.
That's a great idea. Talk about getting two birds stoned at once [/Ricky]
Oh, as for whether it would damage anything, I'm certainly not qualified to answer. But I don't see any reason why it would cause any damage. It's a valve. It's just doing its job, no?
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