Last Wednesday my spinklers stopped working and I discovered that my pump had gone bad (approx. 15 years old). I went to Lowes and got a pump that SEEMED to be the exact specs as the one I was replacing. Once I got it hooked up, it did not produce enough pressure to turn most of the heads in zones 1 and 2. I wrote in to this forum, and had several people tell me that the valves possibly needed cleaning (they were filthy). I tried that, but had the same output. It is then that I learned that the pump that I had purchased from Lowes indeed had the same specs but the gallons per minute output was much lower than the original pump. That is the companies way of producing a cheaper model for the big box stores. The story does have a good ending though. Lowes allowed me to return the pump for a full refund, and I am getting the right one from a local well driller for the same price as the one I purchased from Lowes. Thanks for the help from everyone who replied to my emails