Thanks for the input. After taking some of your comments under consideration, last night I tried some debugging. I turned off zone 1 so that I would only get zone 2 opening, rather than zone 1 closing and then zone 2 opening. The hammering did not occur. I know that one test run without zone 1 is not sufficient to prove that zone 1 was the culprit, but since zone 1 is kind of useless anyways, so if I continue to be hammer free, I might end up being too lazy to try and get zone 1 working again. T...
When zone 2 starts on my sprinkler system, the pipes in the house hammer something awful. I have heard that this may be due to the valve opening too fast. My valve on zone 2 (and zone 1) is an Irritrol 2600T. Do I need to replace the valve or is there an adjustment I can make to try and stop this from occurring. Thanks.
