<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by mrfixit</i>
<br />After reading this article again, I'm thinking that's where I got the above idea from. I guess this is how senility starts. =) The article has some interesting solutions. --
http://www.irrigationtutorials.com/waterhammer.htm
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Thank you for the time and effort you invested in my problem. I had already found this article, and tried varying the sequence of the circuits; I think I will try this again. I'm trying to avoid digging up the system to increase the pipe size or add more circuits, though that's probably the surest solution. Your earlier response recommended using Superior Brand valves. I found their website and they advertise slow closing on their valves. Does your experience with them under high line pressure verify their claims? I'd be willing to try them if you know they work well. Thanks again.