Question
In restarting my sprinkler system this year, one of my stations (with about 5 heads) is always "leaking".  The station isn't "on" full, but water keeps "dribbling" out of all the heads, even when I disconnect power to the controller.  I've disassembled the valve to clean the diaphram, but nothing changed.  I've brought the diaphram to a couple of supply stores but no one knows the brand or carries the replacement.  Any ideas?

Answer
What you have is what we call a "weeping valve". If you have taken apart the valve and cleaned it well than the whole valve needs to be replaced. I would like to know what kind of valve you have. If you can find out than maybe I can help. Thanks for writing.